diff --git a/.github/workflows/ci-integration.yml b/.github/workflows/ci-integration.yml
deleted file mode 100644
index e7da8049a..000000000
--- a/.github/workflows/ci-integration.yml
+++ /dev/null
@@ -1,196 +0,0 @@
-name: Integration Tests
-
-on:
-  workflow_call:
-    inputs:
-      collect-coverage:
-        description: 'Whether to run the coverage collection job (only needed for PR reports)'
-        required: false
-        default: true
-        type: boolean
-
-jobs:
-  # ── Integration test matrix ─────────────────────────────────────────
-  # Each test-group runs on a SEPARATE runner per OS, giving full process
-  # isolation for the LadybugDB native C++ addon.
-  # 3 OS x 4 groups = 12 parallel jobs.
-  #
-  # Groups:
-  #   lbug-db    — 7 files using withTestLbugDB / lbug-adapter (native addon)
-  #                Each file runs as its own `vitest run` invocation for full
-  #                process isolation. LadybugDB's native N-API addon registers
-  #                persistent handles that prevent fork workers from exiting
-  #                on Linux, and its C++ destructors segfault during
-  #                process.exit(). Running each file in its own process lets
-  #                the OS reclaim all resources cleanly.
-  #   pipeline   — 12 files: ingestion pipeline + csv + 9 resolver tests
-  #   e2e        — 2 files: child-process only (spawnSync), no in-process lbug
-  #   standalone — 4 files: pure logic, no lbug, no child processes
-  test-matrix:
-    name: integration (${{ matrix.os }} / ${{ matrix.test-group }})
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
-        test-group: [lbug-db, pipeline, e2e, standalone]
-        include:
-          - test-group: lbug-db
-            # Marker — actual files are listed in the run step below
-            test-glob: ''
-          - test-group: pipeline
-            test-glob: >-
-              test/integration/pipeline.test.ts
-              test/integration/csv-pipeline.test.ts
-              test/integration/parsing.test.ts
-              test/integration/resolvers/typescript.test.ts
-              test/integration/resolvers/csharp.test.ts
-              test/integration/resolvers/cpp.test.ts
-              test/integration/resolvers/java.test.ts
-              test/integration/resolvers/python.test.ts
-              test/integration/resolvers/rust.test.ts
-              test/integration/resolvers/go.test.ts
-              test/integration/resolvers/kotlin.test.ts
-              test/integration/resolvers/php.test.ts
-              test/integration/resolvers/ruby.test.ts
-              test/integration/resolvers/swift.test.ts
-          - test-group: e2e
-            test-glob: >-
-              test/integration/cli-e2e.test.ts
-              test/integration/hooks-e2e.test.ts
-              test/integration/skills-e2e.test.ts
-          - test-group: standalone
-            test-glob: >-
-              test/integration/filesystem-walker.test.ts
-              test/integration/enrichment.test.ts
-              test/integration/tree-sitter-languages.test.ts
-              test/integration/worker-pool.test.ts
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 25
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - uses: ./.github/actions/setup-gitnexus
-        with:
-          build: 'true'
-
-      # lbug-db: run each file in its own vitest process for full isolation.
-      # LadybugDB's native addon hangs fork workers on Linux — process isolation
-      # is the only reliable fix boundary.
-      - name: Run integration tests — lbug-db (process-isolated)
-        if: matrix.test-group == 'lbug-db'
-        working-directory: gitnexus
-        shell: bash
-        run: |
-          set -e
-          files=(
-            test/integration/lbug-core-adapter.test.ts
-            test/integration/lbug-pool.test.ts
-            test/integration/local-backend.test.ts
-            test/integration/local-backend-calltool.test.ts
-            test/integration/search-core.test.ts
-            test/integration/search-pool.test.ts
-            test/integration/augmentation.test.ts
-          )
-          exit_code=0
-          for f in "${files[@]}"; do
-            echo "::group::$f"
-            if ! npx vitest run --reporter=verbose --pool=forks "$f"; then
-              exit_code=1
-              echo "::error::Test file failed: $f"
-            fi
-            echo "::endgroup::"
-          done
-          exit $exit_code
-
-      # Non-lbug groups: run all files in a single vitest invocation
-      - name: Run integration tests — ${{ matrix.test-group }}
-        if: matrix.test-group != 'lbug-db'
-        shell: bash
-        env:
-          TEST_GLOB: ${{ matrix.test-glob }}
-        run: npx vitest run --reporter=verbose $TEST_GLOB
-        working-directory: gitnexus
-
-  # ── Coverage collection (ubuntu only) ─────────────────────────────────
-  # Runs non-lbug integration tests with coverage enabled so the PR report
-  # can merge integration + unit coverage for a combined view.
-  # lbug-db tests are excluded because each file must run in its own vitest
-  # process (native addon isolation) which prevents single-run coverage merge.
-  coverage:
-    name: integration (ubuntu / coverage)
-    if: inputs.collect-coverage
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - uses: ./.github/actions/setup-gitnexus
-        with:
-          build: 'true'
-
-      - name: Run integration tests with coverage
-        working-directory: gitnexus
-        run: >-
-          npx vitest run
-          --reporter=default
-          --reporter=json
-          --outputFile=integration-results.json
-          --coverage
-          --coverage.reporter=json-summary
-          --coverage.reporter=json
-          --coverage.reporter=text
-          --coverage.thresholdAutoUpdate=false
-          --coverage.reportOnFailure=true
-          --coverage.thresholds.statements=0
-          --coverage.thresholds.branches=0
-          --coverage.thresholds.functions=0
-          --coverage.thresholds.lines=0
-          test/integration/pipeline.test.ts
-          test/integration/csv-pipeline.test.ts
-          test/integration/parsing.test.ts
-          test/integration/cli-e2e.test.ts
-          test/integration/hooks-e2e.test.ts
-          test/integration/filesystem-walker.test.ts
-          test/integration/enrichment.test.ts
-          test/integration/tree-sitter-languages.test.ts
-          test/integration/worker-pool.test.ts
-          test/integration/resolvers/typescript.test.ts
-          test/integration/resolvers/csharp.test.ts
-          test/integration/resolvers/cpp.test.ts
-          test/integration/resolvers/java.test.ts
-          test/integration/resolvers/python.test.ts
-          test/integration/resolvers/rust.test.ts
-          test/integration/resolvers/go.test.ts
-          test/integration/resolvers/kotlin.test.ts
-          test/integration/resolvers/php.test.ts
-          test/integration/resolvers/ruby.test.ts
-          test/integration/resolvers/swift.test.ts
-
-      - name: Upload integration coverage
-        if: always()
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
-        with:
-          name: integration-reports
-          path: |
-            gitnexus/coverage/coverage-summary.json
-            gitnexus/coverage/coverage-final.json
-            gitnexus/integration-results.json
-          retention-days: 5
-
-  # ── Unified status gate ──────────────────────────────────────────────
-  # Branch protection should require THIS job, not the matrix jobs directly.
-  # ci.yml's needs.integration.result aggregates through this gate.
-  status:
-    name: integration (all groups)
-    needs: test-matrix
-    if: always()
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    steps:
-      - name: Check all matrix jobs passed
-        shell: bash
-        env:
-          RESULT: ${{ needs.test-matrix.result }}
-        run: |
-          if [[ "$RESULT" != "success" ]]; then
-            echo "::error::Integration matrix failed or cancelled: $RESULT"
-            exit 1
-          fi
diff --git a/.github/workflows/ci-report.yml b/.github/workflows/ci-report.yml
index 106035930..1f1b70cb6 100644
--- a/.github/workflows/ci-report.yml
+++ b/.github/workflows/ci-report.yml
@@ -1,127 +1,132 @@
 name: CI Report
 
-# Triggered after the CI workflow completes.  Because workflow_run
-# always runs code from the *default branch*, it receives a read/write
-# GITHUB_TOKEN — even when the triggering PR comes from a fork.
-
 on:
   workflow_run:
-    workflows: ["CI"]
+    workflows: ['CI']
     types: [completed]
 
 permissions:
-  actions: read        # needed to list/download workflow run artifacts
-  contents: read       # needed for sparse checkout of vitest.config.ts
-  pull-requests: write # needed to post sticky PR comment
+  actions: read
+  contents: read
+  pull-requests: write
 
 jobs:
   pr-report:
     name: PR Report
-    # Only run for pull-request CI runs
     if: >-
       github.event.workflow_run.event == 'pull_request' &&
       github.event.workflow_run.conclusion != 'cancelled'
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      # ── Download artifacts from the CI run ────────────────────────
-      - name: Download artifacts
+      - name: Download PR metadata
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
         with:
           script: |
             const fs = require('fs');
             const path = require('path');
-            const runId = context.payload.workflow_run.id;
 
-            const allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
+            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
-              run_id: runId,
+              run_id: ${{ github.event.workflow_run.id }},
             });
 
-            async function downloadArtifact(name, dest) {
-              const match = allArtifacts.data.artifacts.find(a => a.name === name);
-              if (!match) {
-                core.warning(`Artifact "${name}" not found`);
-                return false;
-              }
-              const zip = await github.rest.actions.downloadArtifact({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                artifact_id: match.id,
-                archive_format: 'zip',
-              });
-              fs.mkdirSync(dest, { recursive: true });
-              fs.writeFileSync(path.join(dest, `${name}.zip`), Buffer.from(zip.data));
-              return true;
+            const meta = artifacts.data.artifacts.find(a => a.name === 'pr-meta');
+            if (!meta) {
+              core.setFailed('pr-meta artifact not found — skipping report');
+              return;
             }
 
-            const temp = process.env.RUNNER_TEMP;
-            await downloadArtifact('pr-meta', path.join(temp, 'dl'));
-            await downloadArtifact('test-reports', path.join(temp, 'dl'));
-            await downloadArtifact('integration-reports', path.join(temp, 'dl'));
+            const zip = await github.rest.actions.downloadArtifact({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              artifact_id: meta.id,
+              archive_format: 'zip',
+            });
 
-      - name: Extract artifacts
-        shell: bash
-        run: |
-          cd "$RUNNER_TEMP/dl"
-          # Extract each artifact into its own directory to avoid filename collisions
-          for z in *.zip; do
-            [ -f "$z" ] || continue
-            name="${z%.zip}"
-            mkdir -p "$RUNNER_TEMP/artifacts/$name"
-            unzip -o "$z" -d "$RUNNER_TEMP/artifacts/$name"
-          done
+            const dest = path.join(process.env.RUNNER_TEMP, 'pr-meta');
+            fs.mkdirSync(dest, { recursive: true });
+            fs.writeFileSync(path.join(dest, 'pr-meta.zip'), Buffer.from(zip.data));
 
-      - name: Read PR metadata
+      - name: Extract PR metadata
         id: meta
         shell: bash
         run: |
-          DIR="$RUNNER_TEMP/artifacts/pr-meta"
-          if [ ! -f "$DIR/pr_number" ]; then
-            echo "skip=true" >> "$GITHUB_OUTPUT"
-            echo "::warning::pr_number artifact missing — skipping report"
-            exit 0
+          cd "$RUNNER_TEMP/pr-meta"
+          unzip -o pr-meta.zip
+
+          PR_NUMBER=$(cat pr-number | tr -d '[:space:]')
+          if ! [[ "$PR_NUMBER" =~ ^[0-9]+$ ]]; then
+            echo "::error::Invalid PR number: '$PR_NUMBER'"
+            exit 1
           fi
 
-          # Validate PR number is a positive integer (artifact comes from
-          # untrusted fork code, so treat contents defensively).
-          PR_NUM=$(cat "$DIR/pr_number" | tr -d '[:space:]')
-          if ! [[ "$PR_NUM" =~ ^[0-9]+$ ]]; then
-            echo "skip=true" >> "$GITHUB_OUTPUT"
-            echo "::error::Invalid PR number in artifact: '$PR_NUM'"
-            exit 0
-          fi
+          echo "pr-number=$PR_NUMBER"         >> "$GITHUB_OUTPUT"
+          echo "quality=$(cat quality-result | tr -d '[:space:]')" >> "$GITHUB_OUTPUT"
+          echo "tests=$(cat tests-result | tr -d '[:space:]')"     >> "$GITHUB_OUTPUT"
 
-          echo "skip=false"              >> "$GITHUB_OUTPUT"
-          echo "pr_number=$PR_NUM"       >> "$GITHUB_OUTPUT"
-          # Validate job-result strings against known GitHub Actions values.
-          # Artifact contents come from the PR workflow (potentially untrusted
-          # fork code), so we whitelist to prevent newline injection into
-          # GITHUB_OUTPUT.
-          validate_result() {
-            local val
-            val=$(cat "$1" | tr -d '[:space:]')
-            case "$val" in
-              success|failure|cancelled|skipped) echo "$val" ;;
-              *) echo "unknown" ;;
-            esac
-          }
-
-          echo "quality=$(validate_result "$DIR/quality_result")"        >> "$GITHUB_OUTPUT"
-          echo "unit=$(validate_result "$DIR/unit_result")"              >> "$GITHUB_OUTPUT"
-          echo "integration=$(validate_result "$DIR/integration_result")" >> "$GITHUB_OUTPUT"
-
-      - name: Checkout (for vitest config)
-        if: steps.meta.outputs.skip != 'true'
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - name: Download test reports
+        id: download-test-reports
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
         with:
-          sparse-checkout: gitnexus/vitest.config.ts
-          sparse-checkout-cone-mode: false
+          script: |
+            const fs = require('fs');
+            const path = require('path');
+
+            const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              run_id: ${{ github.event.workflow_run.id }},
+            });
+
+            const reports = artifacts.data.artifacts.find(a => a.name === 'test-reports');
+            if (!reports) {
+              core.warning('test-reports artifact not found');
+              return;
+            }
+
+            const zip = await github.rest.actions.downloadArtifact({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              artifact_id: reports.id,
+              archive_format: 'zip',
+            });
+
+            const dest = path.join(process.env.RUNNER_TEMP, 'test-reports');
+            fs.mkdirSync(dest, { recursive: true });
+            fs.writeFileSync(path.join(dest, 'test-reports.zip'), Buffer.from(zip.data));
+
+      - name: Extract test reports
+        if: steps.download-test-reports.outcome == 'success'
+        shell: bash
+        run: |
+          cd "$RUNNER_TEMP/test-reports"
+          unzip -o test-reports.zip || true
+
+      - name: Fetch cross-platform job results
+        id: jobs
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
+        with:
+          script: |
+            const jobs = await github.rest.actions.listJobsForWorkflowRun({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              run_id: ${{ github.event.workflow_run.id }},
+              per_page: 50,
+            });
+
+            const results = {};
+            for (const job of jobs.data.jobs) {
+              if (job.name.includes('ubuntu')) results.ubuntu = job.conclusion || 'pending';
+              else if (job.name.includes('windows')) results.windows = job.conclusion || 'pending';
+              else if (job.name.includes('macos')) results.macos = job.conclusion || 'pending';
+            }
+            core.setOutput('ubuntu', results.ubuntu || 'unknown');
+            core.setOutput('windows', results.windows || 'unknown');
+            core.setOutput('macos', results.macos || 'unknown');
 
-      # ── Fetch base branch coverage for delta reporting ───────────
       - name: Fetch base branch coverage
-        if: steps.meta.outputs.skip != 'true'
         id: base-coverage
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
         with:
@@ -129,7 +134,6 @@ jobs:
             const fs = require('fs');
             const path = require('path');
 
-            // Find the latest successful CI run on main
             const runs = await github.rest.actions.listWorkflowRuns({
               owner: context.repo.owner,
               repo: context.repo.repo,
@@ -141,7 +145,6 @@ jobs:
 
             if (runs.data.workflow_runs.length === 0) {
               core.setOutput('found', 'false');
-              core.info('No successful main branch CI runs found');
               return;
             }
 
@@ -155,7 +158,6 @@ jobs:
             const testReports = artifacts.data.artifacts.find(a => a.name === 'test-reports');
             if (!testReports) {
               core.setOutput('found', 'false');
-              core.info('No test-reports artifact on main branch');
               return;
             }
 
@@ -173,350 +175,174 @@ jobs:
             core.setOutput('dir', dest);
 
       - name: Extract base coverage
-        if: steps.meta.outputs.skip != 'true' && steps.base-coverage.outputs.found == 'true'
+        if: steps.base-coverage.outputs.found == 'true'
         shell: bash
         run: |
           cd "${{ steps.base-coverage.outputs.dir }}"
           unzip -o base.zip -d base
 
-      # ── Merge coverage from unit + integration ─────────────────────
-      - name: Setup Node.js
-        if: steps.meta.outputs.skip != 'true'
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
-        with:
-          node-version: 20
-
-      - name: Install coverage merge tools
-        if: steps.meta.outputs.skip != 'true'
-        run: npm install --no-save istanbul-lib-coverage istanbul-lib-report istanbul-reports
-
-      - name: Merge coverage reports
-        if: steps.meta.outputs.skip != 'true'
-        id: coverage
-        shell: bash
-        run: |
-          DIR="$RUNNER_TEMP/artifacts"
-          UNIT_COV=$(find "$DIR/test-reports" -name "coverage-final.json" -type f 2>/dev/null | head -1)
-          INTEG_COV=$(find "$DIR/integration-reports" -name "coverage-final.json" -type f 2>/dev/null | head -1)
-          MERGED_DIR="$RUNNER_TEMP/merged-coverage"
-          mkdir -p "$MERGED_DIR"
-
-          if [ -n "$UNIT_COV" ] && [ -n "$INTEG_COV" ]; then
-            echo "has_merged=true" >> "$GITHUB_OUTPUT"
-            # Merge using Node.js + istanbul-lib-coverage.
-            # Paths are passed via env vars to avoid shell interpolation
-            # inside the script string.
-            UNIT_COV_PATH="$UNIT_COV" \
-            INTEG_COV_PATH="$INTEG_COV" \
-            MERGED_OUT_DIR="$MERGED_DIR" \
-            node -e "
-              const libCoverage = require('istanbul-lib-coverage');
-              const libReport = require('istanbul-lib-report');
-              const reports = require('istanbul-reports');
-              const fs = require('fs');
-
-              const map = libCoverage.createCoverageMap({});
-              map.merge(JSON.parse(fs.readFileSync(process.env.UNIT_COV_PATH, 'utf8')));
-              map.merge(JSON.parse(fs.readFileSync(process.env.INTEG_COV_PATH, 'utf8')));
-
-              const context = libReport.createContext({
-                coverageMap: map,
-                dir: process.env.MERGED_OUT_DIR,
-              });
-              reports.create('json-summary').execute(context);
-              console.log('Merged coverage written to ' + process.env.MERGED_OUT_DIR + '/coverage-summary.json');
-            "
-          elif [ -n "$UNIT_COV" ]; then
-            echo "has_merged=false" >> "$GITHUB_OUTPUT"
-            echo "::warning::Integration coverage not found — using unit coverage only"
-          else
-            echo "has_merged=false" >> "$GITHUB_OUTPUT"
-            echo "::warning::No coverage data found"
-          fi
-
-      - name: Build report
-        if: steps.meta.outputs.skip != 'true'
-        id: report
-        shell: bash
+      - name: Build and post report
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
         env:
+          PR_NUMBER: ${{ steps.meta.outputs.pr-number }}
           QUALITY: ${{ steps.meta.outputs.quality }}
-          UNIT: ${{ steps.meta.outputs.unit }}
-          INTEG: ${{ steps.meta.outputs.integration }}
-          HAS_MERGED: ${{ steps.coverage.outputs.has_merged }}
+          TESTS: ${{ steps.meta.outputs.tests }}
+          UBUNTU: ${{ steps.jobs.outputs.ubuntu }}
+          WINDOWS: ${{ steps.jobs.outputs.windows }}
+          MACOS: ${{ steps.jobs.outputs.macos }}
           BASE_FOUND: ${{ steps.base-coverage.outputs.found }}
           BASE_DIR: ${{ steps.base-coverage.outputs.dir }}
-          RUN_URL: ${{ github.event.workflow_run.html_url }}
-        run: |
-          DIR="$RUNNER_TEMP/artifacts"
-          MERGED_DIR="$RUNNER_TEMP/merged-coverage"
+          RUN_ID: ${{ github.event.workflow_run.id }}
+          HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
+        with:
+          script: |
+            const fs = require('fs');
+            const path = require('path');
 
-          # ── Helper: read coverage summary into prefixed vars ──
-          read_cov() {
-            local prefix=$1 file=$2
-            if [ -n "$file" ] && [ -f "$file" ]; then
-              local val
-              val=$(jq -r '.total.statements.pct // "N/A"' "$file" 2>/dev/null) || val="N/A"
-              printf -v "${prefix}_STMTS" '%s' "$val"
-              val=$(jq -r '.total.branches.pct // "N/A"' "$file" 2>/dev/null) || val="N/A"
-              printf -v "${prefix}_BRANCH" '%s' "$val"
-              val=$(jq -r '.total.functions.pct // "N/A"' "$file" 2>/dev/null) || val="N/A"
-              printf -v "${prefix}_FUNCS" '%s' "$val"
-              val=$(jq -r '.total.lines.pct // "N/A"' "$file" 2>/dev/null) || val="N/A"
-              printf -v "${prefix}_LINES" '%s' "$val"
-              val=$(jq -r '"\(.total.statements.covered)/\(.total.statements.total)"' "$file" 2>/dev/null) || val=""
-              printf -v "${prefix}_STMTS_COV" '%s' "$val"
-              val=$(jq -r '"\(.total.branches.covered)/\(.total.branches.total)"' "$file" 2>/dev/null) || val=""
-              printf -v "${prefix}_BRANCH_COV" '%s' "$val"
-              val=$(jq -r '"\(.total.functions.covered)/\(.total.functions.total)"' "$file" 2>/dev/null) || val=""
-              printf -v "${prefix}_FUNCS_COV" '%s' "$val"
-              val=$(jq -r '"\(.total.lines.covered)/\(.total.lines.total)"' "$file" 2>/dev/null) || val=""
-              printf -v "${prefix}_LINES_COV" '%s' "$val"
-              return 0
-            else
-              printf -v "${prefix}_STMTS" '%s' "N/A"
-              printf -v "${prefix}_BRANCH" '%s' "N/A"
-              printf -v "${prefix}_FUNCS" '%s' "N/A"
-              printf -v "${prefix}_LINES" '%s' "N/A"
-              printf -v "${prefix}_STMTS_COV" '%s' ""
-              printf -v "${prefix}_BRANCH_COV" '%s' ""
-              printf -v "${prefix}_FUNCS_COV" '%s' ""
-              printf -v "${prefix}_LINES_COV" '%s' ""
-              return 1
-            fi
-          }
+            const icon = (s) => ({ success: '✅', failure: '❌', cancelled: '⏭️' }[s] || '❓');
+            const temp = process.env.RUNNER_TEMP;
 
-          # ── Read all coverage reports ──
-          UNIT_SUMMARY=$(find "$DIR/test-reports" -name "coverage-summary.json" -type f 2>/dev/null | head -1)
-          INTEG_SUMMARY=$(find "$DIR/integration-reports" -name "coverage-summary.json" -type f 2>/dev/null | head -1)
-          MERGED_SUMMARY="$MERGED_DIR/coverage-summary.json"
-
-          read_cov "U" "$UNIT_SUMMARY"
-          HAS_UNIT=$?
-          read_cov "I" "$INTEG_SUMMARY"
-          HAS_INTEG=$?
-          read_cov "M" "$MERGED_SUMMARY"
-
-          # ── Read base branch coverage (main) ──
-          BASE_SUMMARY=""
-          if [ "$BASE_FOUND" = "true" ] && [ -n "$BASE_DIR" ]; then
-            BASE_SUMMARY=$(find "$BASE_DIR/base" -name "coverage-summary.json" -type f 2>/dev/null | head -1)
-          fi
-          read_cov "B" "$BASE_SUMMARY"
-
-          # ── Locate test results ──
-          RESULTS_FILE=$(find "$DIR/test-reports" -name "test-results.json" -type f 2>/dev/null | head -1)
-          INTEG_RESULTS=$(find "$DIR/integration-reports" -name "integration-results.json" -type f 2>/dev/null | head -1)
-
-          if [ -n "$RESULTS_FILE" ]; then
-            U_TOTAL=$(jq -r '.numTotalTests' "$RESULTS_FILE" 2>/dev/null || echo 0)
-            U_PASSED=$(jq -r '.numPassedTests' "$RESULTS_FILE" 2>/dev/null || echo 0)
-            U_FAILED=$(jq -r '.numFailedTests' "$RESULTS_FILE" 2>/dev/null || echo 0)
-            U_SKIPPED=$(jq -r '.numPendingTests' "$RESULTS_FILE" 2>/dev/null || echo 0)
-            U_SUITES=$(jq -r '.numTotalTestSuites' "$RESULTS_FILE" 2>/dev/null || echo 0)
-            U_DURATION=$(jq -r '((.testResults | map(.endTime) | max) - (.startTime)) / 1000 | floor' "$RESULTS_FILE" 2>/dev/null || echo 0)
-          else
-            U_TOTAL=0; U_PASSED=0; U_FAILED=0; U_SKIPPED=0; U_SUITES=0; U_DURATION=0
-          fi
-
-          if [ -n "$INTEG_RESULTS" ]; then
-            I_TOTAL=$(jq -r '.numTotalTests' "$INTEG_RESULTS" 2>/dev/null || echo 0)
-            I_PASSED=$(jq -r '.numPassedTests' "$INTEG_RESULTS" 2>/dev/null || echo 0)
-            I_FAILED=$(jq -r '.numFailedTests' "$INTEG_RESULTS" 2>/dev/null || echo 0)
-            I_SKIPPED=$(jq -r '.numPendingTests' "$INTEG_RESULTS" 2>/dev/null || echo 0)
-            I_SUITES=$(jq -r '.numTotalTestSuites' "$INTEG_RESULTS" 2>/dev/null || echo 0)
-            I_DURATION=$(jq -r '((.testResults | map(.endTime) | max) - (.startTime)) / 1000 | floor' "$INTEG_RESULTS" 2>/dev/null || echo 0)
-          else
-            I_TOTAL=0; I_PASSED=0; I_FAILED=0; I_SKIPPED=0; I_SUITES=0; I_DURATION=0
-          fi
-
-          # ── Sum test results ──
-          TOTAL=$((U_TOTAL + I_TOTAL))
-          PASSED=$((U_PASSED + I_PASSED))
-          FAILED=$((U_FAILED + I_FAILED))
-          SKIPPED=$((U_SKIPPED + I_SKIPPED))
-          SUITES=$((U_SUITES + I_SUITES))
-
-          # ── Status helpers ──
-          status_icon() {
-            case "$1" in
-              success) echo "✅" ;;
-              failure) echo "❌" ;;
-              cancelled) echo "⏭️" ;;
-              *) echo "❓" ;;
-            esac
-          }
-
-          cov_delta() {
-            local pct=$1 base=$2
-            if [ "$pct" = "N/A" ] || [ "$base" = "N/A" ]; then echo "—"; return; fi
-            local diff
-            diff=$(awk "BEGIN { printf \"%.1f\", $pct - $base }")
-            if [ "$(awk "BEGIN { print ($pct > $base) ? 1 : 0 }")" = "1" ]; then
-              echo "📈 +${diff}"
-            elif [ "$(awk "BEGIN { print ($pct < $base) ? 1 : 0 }")" = "1" ]; then
-              echo "📉 ${diff}"
-            else
-              echo "＝ ${diff}"
-            fi
-          }
-
-          cov_bar() {
-            local pct=$1 base=$2
-            if [ "$pct" = "N/A" ]; then echo "—"; return; fi
-            local filled
-            filled=$(awk "BEGIN { printf \"%d\", $pct / 5 }")
-            (( filled < 0 )) && filled=0
-            (( filled > 20 )) && filled=20
-            local empty=$((20 - filled))
-            local bar=""
-            for ((i=0; i<filled; i++)); do bar+="█"; done
-            for ((i=0; i<empty; i++)); do bar+="░"; done
-            # Green if >= base (or base unavailable), red if dropped
-            if [ "$base" = "N/A" ] || [ "$(awk "BEGIN { print ($pct >= $base) ? 1 : 0 }")" = "1" ]; then
-              echo "🟢 ${bar}"
-            else
-              echo "🔴 ${bar}"
-            fi
-          }
-
-          # ── Overall status ──
-          if [[ "$QUALITY" == "success" && "$UNIT" == "success" && "$INTEG" == "success" ]]; then
-            OVERALL="✅ **All checks passed**"
-          else
-            OVERALL="❌ **Some checks failed**"
-          fi
-
-          # ── Build markdown ──
-          {
-            echo "body<<GITNEXUS_CI_REPORT_EOF_7f3a"
-            echo "## CI Report"
-            echo ""
-            echo "${OVERALL}"
-            echo ""
-            echo "### Pipeline Status"
-            echo ""
-            echo "| Stage | Status | Details |"
-            echo "|-------|--------|---------|"
-            echo "| $(status_icon "$QUALITY") Typecheck | \`${QUALITY}\` | tsc --noEmit |"
-            echo "| $(status_icon "$UNIT") Unit Tests | \`${UNIT}\` | 3 platforms |"
-            echo "| $(status_icon "$INTEG") Integration | \`${INTEG}\` | 3 OS x 4 groups = 12 jobs |"
-            echo ""
-
-            if [ "$TOTAL" -gt 0 ] 2>/dev/null; then
-              echo "### Test Results"
-              echo ""
-              echo "| Suite | Tests | Passed | Failed | Skipped | Duration |"
-              echo "|-------|-------|--------|--------|---------|----------|"
-              if [ "$U_TOTAL" -gt 0 ] 2>/dev/null; then
-                echo "| Unit | ${U_TOTAL} | ${U_PASSED} | ${U_FAILED} | ${U_SKIPPED} | ${U_DURATION}s |"
-              fi
-              if [ "$I_TOTAL" -gt 0 ] 2>/dev/null; then
-                echo "| Integration | ${I_TOTAL} | ${I_PASSED} | ${I_FAILED} | ${I_SKIPPED} | ${I_DURATION}s |"
-              fi
-              echo "| **Total** | **${TOTAL}** | **${PASSED}** | **${FAILED}** | **${SKIPPED}** | **$((U_DURATION + I_DURATION))s** |"
-              echo ""
-
-              if [ "$FAILED" = "0" ]; then
-                echo "✅ All **${PASSED}** tests passed"
-              else
-                echo "❌ **${FAILED}** failed / **${PASSED}** passed"
-              fi
-              if [ "$SKIPPED" != "0" ]; then
-                echo ""
-                echo "<details>"
-                echo "<summary>${SKIPPED} test(s) skipped — expand for details</summary>"
-                echo ""
-                # Extract skipped test names from integration results
-                if [ -n "$INTEG_RESULTS" ] && [ "$I_SKIPPED" -gt 0 ] 2>/dev/null; then
-                  echo "**Integration:**"
-                  jq -r '
-                    .testResults[]
-                    | .assertionResults[]?
-                    | select(.status == "pending" or .status == "skipped")
-                    | "- \(.ancestorTitles | join(" > ")) > \(.title)"
-                  ' "$INTEG_RESULTS" 2>/dev/null || echo "- _(unable to parse skipped test details)_"
-                fi
-                # Extract skipped test names from unit results
-                if [ -n "$RESULTS_FILE" ] && [ "$U_SKIPPED" -gt 0 ] 2>/dev/null; then
-                  echo ""
-                  echo "**Unit:**"
-                  jq -r '
-                    .testResults[]
-                    | .assertionResults[]?
-                    | select(.status == "pending" or .status == "skipped")
-                    | "- \(.ancestorTitles | join(" > ")) > \(.title)"
-                  ' "$RESULTS_FILE" 2>/dev/null || echo "- _(unable to parse skipped test details)_"
-                fi
-                echo ""
-                echo "</details>"
-              fi
-              echo ""
-            fi
-
-            # ── Coverage table helper ──
-            cov_table() {
-              local label=$1 s=$2 b=$3 f=$4 l=$5 sc=$6 bc=$7 fc=$8 lc=$9
-              shift 9
-              local bs=$1 bb=$2 bf=$3 bl=$4
-              echo "#### ${label}"
-              echo ""
-              echo "| Metric | Coverage | Covered | Base | Delta | Status |"
-              echo "|--------|----------|---------|------|-------|--------|"
-              echo "| Statements | **${s}%** | ${sc} | ${bs}% | $(cov_delta "$s" "$bs") | $(cov_bar "$s" "$bs") |"
-              echo "| Branches | **${b}%** | ${bc} | ${bb}% | $(cov_delta "$b" "$bb") | $(cov_bar "$b" "$bb") |"
-              echo "| Functions | **${f}%** | ${fc} | ${bf}% | $(cov_delta "$f" "$bf") | $(cov_bar "$f" "$bf") |"
-              echo "| Lines | **${l}%** | ${lc} | ${bl}% | $(cov_delta "$l" "$bl") | $(cov_bar "$l" "$bl") |"
-              echo ""
+            // ── Read coverage ──
+            function readCov(dir) {
+              const out = { stmts: 'N/A', branch: 'N/A', funcs: 'N/A', lines: 'N/A',
+                            stmtsCov: '', branchCov: '', funcsCov: '', linesCov: '' };
+              try {
+                const files = require('child_process')
+                  .execSync(`find "${dir}" -name coverage-summary.json -type f`, { encoding: 'utf8' })
+                  .trim().split('\n').filter(Boolean);
+                if (!files.length) return out;
+                const d = JSON.parse(fs.readFileSync(files[0], 'utf8')).total;
+                out.stmts = d.statements.pct; out.branch = d.branches.pct;
+                out.funcs = d.functions.pct;  out.lines = d.lines.pct;
+                out.stmtsCov = `${d.statements.covered}/${d.statements.total}`;
+                out.branchCov = `${d.branches.covered}/${d.branches.total}`;
+                out.funcsCov = `${d.functions.covered}/${d.functions.total}`;
+                out.linesCov = `${d.lines.covered}/${d.lines.total}`;
+              } catch {}
+              return out;
             }
 
-            if [ "$M_STMTS" != "N/A" ]; then
-              echo "### Code Coverage"
-              echo ""
-              cov_table "Combined (Unit + Integration)" \
-                "$M_STMTS" "$M_BRANCH" "$M_FUNCS" "$M_LINES" \
-                "$M_STMTS_COV" "$M_BRANCH_COV" "$M_FUNCS_COV" "$M_LINES_COV" \
-                "$B_STMTS" "$B_BRANCH" "$B_FUNCS" "$B_LINES"
+            const cov = readCov(path.join(temp, 'test-reports'));
+            const base = process.env.BASE_FOUND === 'true'
+              ? readCov(path.join(process.env.BASE_DIR, 'base'))
+              : { stmts: 'N/A', branch: 'N/A', funcs: 'N/A', lines: 'N/A' };
 
-              echo "<details>"
-              echo "<summary>Coverage breakdown by test suite</summary>"
-              echo ""
-              if [ "$U_STMTS" != "N/A" ]; then
-                cov_table "Unit Tests" \
-                  "$U_STMTS" "$U_BRANCH" "$U_FUNCS" "$U_LINES" \
-                  "$U_STMTS_COV" "$U_BRANCH_COV" "$U_FUNCS_COV" "$U_LINES_COV" \
-                  "$B_STMTS" "$B_BRANCH" "$B_FUNCS" "$B_LINES"
-              fi
-              if [ "$I_STMTS" != "N/A" ]; then
-                cov_table "Integration Tests" \
-                  "$I_STMTS" "$I_BRANCH" "$I_FUNCS" "$I_LINES" \
-                  "$I_STMTS_COV" "$I_BRANCH_COV" "$I_FUNCS_COV" "$I_LINES_COV" \
-                  "$B_STMTS" "$B_BRANCH" "$B_FUNCS" "$B_LINES"
-              fi
-              echo "</details>"
-              echo ""
-            elif [ "$U_STMTS" != "N/A" ]; then
-              echo "### Code Coverage (Unit only)"
-              echo ""
-              cov_table "Unit Tests" \
-                "$U_STMTS" "$U_BRANCH" "$U_FUNCS" "$U_LINES" \
-                "$U_STMTS_COV" "$U_BRANCH_COV" "$U_FUNCS_COV" "$U_LINES_COV" \
-                "$B_STMTS" "$B_BRANCH" "$B_FUNCS" "$B_LINES"
-            else
-              echo "### Code Coverage"
-              echo ""
-              echo "⚠️ Coverage data unavailable - check the [unit test job](${RUN_URL}) for details."
-              echo ""
-            fi
+            // ── Read test results ──
+            let total = 0, passed = 0, failed = 0, skipped = 0, suites = 0, duration = '0s';
+            let skippedTests = [];
+            try {
+              const files = require('child_process')
+                .execSync(`find "${path.join(temp, 'test-reports')}" -name test-results.json -type f`, { encoding: 'utf8' })
+                .trim().split('\n').filter(Boolean);
+              if (files.length) {
+                const r = JSON.parse(fs.readFileSync(files[0], 'utf8'));
+                total = r.numTotalTests || 0;
+                passed = r.numPassedTests || 0;
+                failed = r.numFailedTests || 0;
+                skipped = r.numPendingTests || 0;
+                suites = r.numTotalTestSuites || 0;
+                const durS = Math.floor((Math.max(...r.testResults.map(t => t.endTime)) - r.startTime) / 1000);
+                duration = durS >= 60 ? `${Math.floor(durS / 60)}m ${durS % 60}s` : `${durS}s`;
+                // Collect skipped test names
+                for (const suite of r.testResults) {
+                  for (const t of (suite.assertionResults || [])) {
+                    if (t.status === 'pending' || t.status === 'skipped') {
+                      skippedTests.push(`- ${t.ancestorTitles.join(' > ')} > ${t.title}`);
+                    }
+                  }
+                }
+              }
+            } catch {}
 
-            echo "---"
-            echo "<sub>📋 [View full run](${RUN_URL}) · Generated by CI</sub>"
-            echo "GITNEXUS_CI_REPORT_EOF_7f3a"
-          } >> "$GITHUB_OUTPUT"
+            // ── Coverage delta ──
+            function delta(pct, basePct) {
+              if (pct === 'N/A' || basePct === 'N/A') return '—';
+              const d = (pct - basePct).toFixed(1);
+              const dNum = parseFloat(d);
+              if (dNum > 0) return `📈 +${d}%`;
+              if (dNum < 0) return `📉 ${d}%`;
+              return '＝';
+            }
 
-      - name: Comment on PR
-        if: steps.meta.outputs.skip != 'true'
-        uses: marocchino/sticky-pull-request-comment@773744901bac0e8cbb5a0dc842800d45e9b2b405 # v2
-        with:
-          header: ci-report
-          number: ${{ steps.meta.outputs.pr_number }}
-          message: ${{ steps.report.outputs.body }}
+            // ── Build markdown ──
+            const { PR_NUMBER, QUALITY, TESTS, UBUNTU, WINDOWS, MACOS, RUN_ID, HEAD_SHA } = process.env;
+            const prNumber = parseInt(PR_NUMBER, 10);
+            const overall = (QUALITY === 'success' && TESTS === 'success')
+              ? '✅ **All checks passed**' : '❌ **Some checks failed**';
+            const sha = HEAD_SHA.slice(0, 7);
+
+            let body = `## CI Report\n\n${overall} &ensp; \`${sha}\`\n\n`;
+
+            body += `### Pipeline\n\n`;
+            body += `| Stage | Status | Ubuntu | Windows | macOS |\n`;
+            body += `|-------|--------|--------|---------|-------|\n`;
+            body += `| Typecheck | ${icon(QUALITY)} \`${QUALITY}\` | — | — | — |\n`;
+            body += `| Tests | ${icon(TESTS)} \`${TESTS}\` | ${icon(UBUNTU)} | ${icon(WINDOWS)} | ${icon(MACOS)} |\n\n`;
+
+            if (total > 0) {
+              body += `### Tests\n\n`;
+              body += `| Metric | Value |\n|--------|-------|\n`;
+              body += `| Total | **${total}** |\n`;
+              body += `| Passed | **${passed}** |\n`;
+              if (failed > 0) body += `| Failed | **${failed}** |\n`;
+              if (skipped > 0) body += `| Skipped | ${skipped} |\n`;
+              body += `| Files | ${suites} |\n`;
+              body += `| Duration | ${duration} |\n\n`;
+
+              if (failed === 0) {
+                body += `✅ All **${passed}** tests passed across **${suites}** files\n`;
+              } else {
+                body += `❌ **${failed}** failed / **${passed}** passed\n`;
+              }
+
+              if (skippedTests.length > 0) {
+                body += `\n<details>\n<summary>${skipped} test(s) skipped</summary>\n\n`;
+                body += skippedTests.join('\n') + '\n\n</details>\n';
+              }
+              body += '\n';
+            }
+
+            if (cov.stmts !== 'N/A') {
+              body += `### Coverage\n\n`;
+              body += `| Metric | Coverage | Covered | Base (main) | Delta |\n`;
+              body += `|--------|----------|---------|-------------|-------|\n`;
+              body += `| Statements | **${cov.stmts}%** | ${cov.stmtsCov} | ${base.stmts}% | ${delta(cov.stmts, base.stmts)} |\n`;
+              body += `| Branches | **${cov.branch}%** | ${cov.branchCov} | ${base.branch}% | ${delta(cov.branch, base.branch)} |\n`;
+              body += `| Functions | **${cov.funcs}%** | ${cov.funcsCov} | ${base.funcs}% | ${delta(cov.funcs, base.funcs)} |\n`;
+              body += `| Lines | **${cov.lines}%** | ${cov.linesCov} | ${base.lines}% | ${delta(cov.lines, base.lines)} |\n\n`;
+            } else {
+              const runUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${RUN_ID}`;
+              body += `### Coverage\n\n⚠️ Coverage data unavailable — check the [test job](${runUrl}) for details.\n\n`;
+            }
+
+            const runUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${RUN_ID}`;
+            body += `---\n<sub>📋 [Full run](${runUrl}) · Coverage from Ubuntu · Generated by CI</sub>`;
+
+            // ── Post sticky comment ──
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: prNumber,
+              per_page: 100,
+              direction: 'desc',
+            });
+
+            const marker = '<!-- ci-report -->';
+            const existing = comments.find(c => c.body?.includes(marker));
+            const fullBody = marker + '\n' + body;
+
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: existing.id,
+                body: fullBody,
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: prNumber,
+                body: fullBody,
+              });
+            }
diff --git a/.github/workflows/ci-unit-tests.yml b/.github/workflows/ci-tests.yml
similarity index 81%
rename from .github/workflows/ci-unit-tests.yml
rename to .github/workflows/ci-tests.yml
index 686afd324..c48401bcd 100644
--- a/.github/workflows/ci-unit-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -1,20 +1,22 @@
-name: Unit Tests
+name: Tests
 
 on:
   workflow_call:
 
 jobs:
-  unit-tests:
-    name: unit (ubuntu / coverage)
+  tests:
+    name: ubuntu / coverage
     runs-on: ubuntu-latest
-    timeout-minutes: 15
+    timeout-minutes: 25
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
       - uses: ./.github/actions/setup-gitnexus
+        with:
+          build: 'true'
 
-      - name: Run unit tests with coverage
+      - name: Run all tests with coverage
         run: >-
-          npx vitest run test/unit
+          npx vitest run
           --reporter=default
           --reporter=json
           --outputFile=test-results.json
@@ -38,16 +40,18 @@ jobs:
           retention-days: 5
 
   cross-platform:
-    name: unit (${{ matrix.os }})
+    name: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         # Ubuntu already covered by the coverage job above
         os: [windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 15
+    timeout-minutes: 25
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
       - uses: ./.github/actions/setup-gitnexus
-      - run: npx vitest run test/unit
+        with:
+          build: 'true'
+      - run: npx vitest run
         working-directory: gitnexus
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ea9c8ca93..7ce04463c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,10 +16,8 @@ concurrency:
 # ── Reusable workflow orchestration ─────────────────────────────────
 # Each concern lives in its own workflow file for maintainability:
 #   ci-quality.yml       — typecheck (tsc --noEmit)
-#   ci-unit-tests.yml    — unit tests with coverage + cross-platform
-#   ci-integration.yml   — integration test matrix (3 OS x 4 groups)
-#
-# Shared setup is DRY via .github/actions/setup-gitnexus composite action.
+#   ci-tests.yml         — all tests with coverage (ubuntu) + cross-platform
+#   ci-report.yml        — PR comment (workflow_run trigger for fork write access)
 
 jobs:
   quality:
@@ -27,56 +25,16 @@ jobs:
     permissions:
       contents: read
 
-  unit-tests:
-    uses: ./.github/workflows/ci-unit-tests.yml
+  tests:
+    uses: ./.github/workflows/ci-tests.yml
     permissions:
       contents: read
 
-  integration:
-    uses: ./.github/workflows/ci-integration.yml
-    with:
-      collect-coverage: ${{ github.event_name == 'pull_request' }}
-    permissions:
-      contents: read
-
-  # ── Save PR metadata for the reporting workflow ─────────────────
-  # The ci-report.yml workflow (triggered by workflow_run) needs the
-  # PR number and job results to post a comment.  We save them as an
-  # artifact because workflow_run context doesn't reliably carry PR
-  # info for fork PRs.
-  save-pr-meta:
-    name: Save PR Metadata
-    if: always() && github.event_name == 'pull_request'
-    needs: [quality, unit-tests, integration]
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    steps:
-      - name: Write metadata
-        shell: bash
-        env:
-          PR_NUMBER: ${{ github.event.number }}
-          QUALITY: ${{ needs.quality.result }}
-          UNIT: ${{ needs.unit-tests.result }}
-          INTEG: ${{ needs.integration.result }}
-        run: |
-          mkdir -p pr-meta
-          echo "$PR_NUMBER"  > pr-meta/pr_number
-          echo "$QUALITY"    > pr-meta/quality_result
-          echo "$UNIT"       > pr-meta/unit_result
-          echo "$INTEG"      > pr-meta/integration_result
-
-      - name: Upload PR metadata
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
-        with:
-          name: pr-meta
-          path: pr-meta/
-          retention-days: 1
-
   # ── Unified CI gate ──────────────────────────────────────────────
   # Single required check for branch protection.
   ci-status:
     name: CI Gate
-    needs: [quality, unit-tests, integration]
+    needs: [quality, tests]
     if: always()
     runs-on: ubuntu-latest
     timeout-minutes: 5
@@ -85,15 +43,41 @@ jobs:
         shell: bash
         env:
           QUALITY: ${{ needs.quality.result }}
-          UNIT: ${{ needs.unit-tests.result }}
-          INTEG: ${{ needs.integration.result }}
+          TESTS: ${{ needs.tests.result }}
         run: |
-          echo "Quality:     $QUALITY"
-          echo "Unit Tests:  $UNIT"
-          echo "Integration: $INTEG"
+          echo "Quality:  $QUALITY"
+          echo "Tests:    $TESTS"
           if [[ "$QUALITY" != "success" ]] ||
-             [[ "$UNIT" != "success" ]] ||
-             [[ "$INTEG" != "success" ]]; then
+             [[ "$TESTS" != "success" ]]; then
             echo "::error::One or more CI jobs failed"
             exit 1
           fi
+
+  # ── PR metadata for ci-report.yml ────────────────────────────────
+  # Saves PR number and job results so the workflow_run-triggered
+  # report can post comments with a write token (works for forks).
+  save-pr-meta:
+    name: Save PR Metadata
+    if: always() && github.event_name == 'pull_request'
+    needs: [quality, tests]
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Write PR metadata
+        shell: bash
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          QUALITY: ${{ needs.quality.result }}
+          TESTS: ${{ needs.tests.result }}
+        run: |
+          mkdir -p pr-meta
+          echo "$PR_NUMBER" > pr-meta/pr-number
+          echo "$QUALITY"   > pr-meta/quality-result
+          echo "$TESTS"     > pr-meta/tests-result
+
+      - name: Upload PR metadata
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: pr-meta
+          path: pr-meta/
+          retention-days: 1
diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index afa25cffd..82a65f844 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -2,8 +2,9 @@ name: Claude Code Review
 
 # Uses pull_request_target so the workflow runs as defined on the default branch,
 # which allows access to secrets for posting review comments on fork PRs.
-# SECURITY: The checkout below uses the PR head SHA to review the correct code.
-# The claude-code-action sandboxes execution — it does NOT run arbitrary code
+# SECURITY: The checkout pins the fork's HEAD SHA (not the branch name) to
+# prevent TOCTOU races (force-push between trigger and checkout). The
+# claude-code-action sandboxes execution — it does NOT run arbitrary code
 # from the checked-out source.
 
 on:
@@ -15,6 +16,11 @@ on:
   issue_comment:
     types: [created]
 
+# Serialize per-PR to avoid racing review comments.
+concurrency:
+  group: claude-review-${{ github.event.issue.number || github.event.pull_request.number }}
+  cancel-in-progress: false
+
 jobs:
   claude-review:
     # Run only when:
@@ -41,13 +47,13 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     permissions:
-      contents: write       # needed to push fork branch to origin
+      contents: read
       pull-requests: write
       issues: read
       id-token: write
 
     steps:
-      # For issue_comment triggers, resolve the PR number, head SHA, and branch name
+      # For issue_comment triggers, resolve the PR number, head SHA, and fork repo
       - name: Resolve PR context
         id: pr
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
@@ -66,32 +72,24 @@ jobs:
             }
             core.setOutput('number', pr.number);
             core.setOutput('sha', pr.head.sha);
+            core.setOutput('repo', pr.head.repo.full_name);
             core.setOutput('branch', pr.head.ref);
-            core.setOutput('is_fork', String(pr.head.repo.full_name !== pr.base.repo.full_name));
 
       - name: Checkout PR head
         uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
+          repository: ${{ steps.pr.outputs.repo }}
           ref: ${{ steps.pr.outputs.sha }}
           fetch-depth: 1
 
-      # claude-code-action fetches branches by name from origin, which fails
-      # for fork PRs. Work around by pushing the fork branch to origin so
-      # the action can find it.  Cleaned up in the post step below.
-      - name: Push fork branch to origin
-        if: steps.pr.outputs.is_fork == 'true'
-        run: git push origin HEAD:refs/heads/${{ steps.pr.outputs.branch }}
-
       - name: Run Claude Code Review
         id: claude-review
         uses: anthropics/claude-code-action@9469d113c6afd29550c402740f22d1a97dd1209b # v1
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          allowed_non_write_users: '*'
+          show_full_output: true
           plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
           plugins: 'code-review@claude-code-plugins'
           prompt: '/code-review:code-review ${{ github.repository }}/pull/${{ steps.pr.outputs.number }}'
-
-      # Clean up the temporary branch we pushed for fork PRs
-      - name: Delete fork branch from origin
-        if: always() && steps.pr.outputs.is_fork == 'true'
-        run: git push origin --delete refs/heads/${{ steps.pr.outputs.branch }} || true
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index a4768cfbb..7925c0ba4 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -10,13 +10,42 @@ on:
   pull_request_review:
     types: [submitted]
 
+# Serialize per-PR/issue to avoid racing comments.
+concurrency:
+  group: claude-code-${{ github.event.issue.number || github.event.pull_request.number || github.event.issue.id }}
+  cancel-in-progress: false
+
 jobs:
   claude:
     if: |
-      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
-      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
-      (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
-      (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
+      (
+        github.event_name == 'issue_comment' &&
+        contains(github.event.comment.body, '@claude') &&
+        (github.event.comment.author_association == 'OWNER' ||
+         github.event.comment.author_association == 'MEMBER' ||
+         github.event.comment.author_association == 'COLLABORATOR')
+      ) ||
+      (
+        github.event_name == 'pull_request_review_comment' &&
+        contains(github.event.comment.body, '@claude') &&
+        (github.event.comment.author_association == 'OWNER' ||
+         github.event.comment.author_association == 'MEMBER' ||
+         github.event.comment.author_association == 'COLLABORATOR')
+      ) ||
+      (
+        github.event_name == 'pull_request_review' &&
+        contains(github.event.review.body, '@claude') &&
+        (github.event.review.author_association == 'OWNER' ||
+         github.event.review.author_association == 'MEMBER' ||
+         github.event.review.author_association == 'COLLABORATOR')
+      ) ||
+      (
+        github.event_name == 'issues' &&
+        (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')) &&
+        (github.event.issue.author_association == 'OWNER' ||
+         github.event.issue.author_association == 'MEMBER' ||
+         github.event.issue.author_association == 'COLLABORATOR')
+      )
     runs-on: ubuntu-latest
     timeout-minutes: 30
     permissions:
@@ -24,11 +53,47 @@ jobs:
       pull-requests: write
       issues: write
       id-token: write
-      actions: read # Required for Claude to read CI results on PRs
+      actions: read         # required for Claude to read CI results on PRs
     steps:
+      # For PR-related triggers, resolve the fork repo so we can checkout correctly.
+      - name: Resolve PR context
+        id: pr
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
+        with:
+          script: |
+            // Determine if this event is PR-related
+            let prNumber = null;
+            if (context.eventName === 'issue_comment' && context.payload.issue.pull_request) {
+              prNumber = context.payload.issue.number;
+            } else if (context.eventName === 'pull_request_review_comment') {
+              prNumber = context.payload.pull_request.number;
+            } else if (context.eventName === 'pull_request_review') {
+              prNumber = context.payload.pull_request.number;
+            }
+
+            if (!prNumber) {
+              core.setOutput('is_pr', 'false');
+              return;
+            }
+
+            const resp = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: prNumber,
+            });
+            const pr = resp.data;
+
+            core.setOutput('is_pr', 'true');
+            core.setOutput('number', String(prNumber));
+            core.setOutput('sha', pr.head.sha);
+            core.setOutput('repo', pr.head.repo.full_name);
+            core.setOutput('branch', pr.head.ref);
+
       - name: Checkout repository
         uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
+          repository: ${{ steps.pr.outputs.is_pr == 'true' && steps.pr.outputs.repo || github.repository }}
+          ref: ${{ steps.pr.outputs.is_pr == 'true' && steps.pr.outputs.sha || '' }}
           fetch-depth: 1
 
       - name: Run Claude Code
@@ -36,6 +101,9 @@ jobs:
         uses: anthropics/claude-code-action@9469d113c6afd29550c402740f22d1a97dd1209b # v1
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          allowed_non_write_users: '*'
+          show_full_output: true
 
           # This is an optional setting that allows Claude to read CI results on PRs
           additional_permissions: |
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 13d00954e..3da468208 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -12,6 +12,7 @@ jobs:
     uses: ./.github/workflows/ci.yml
     permissions:
       contents: read
+      actions: read
       pull-requests: write
 
   publish:
diff --git a/.gitignore b/.gitignore
index 9853c332e..509bdbb1e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -67,4 +67,6 @@ gitnexus/test/fixtures/mini-repo/.gitignore
 # Ignore csharp generated obj and bin folders
 gitnexus/test/fixtures/lang-resolution/**/obj
 gitnexus/test/fixtures/lang-resolution/**/bin
-GitNexus.sln
\ No newline at end of file
+GitNexus.sln
+# Git worktrees
+.worktrees/
diff --git a/.history/gitnexus/vitest.config_20260317171253.ts b/.history/gitnexus/vitest.config_20260317171253.ts
new file mode 100644
index 000000000..b3beecb1b
--- /dev/null
+++ b/.history/gitnexus/vitest.config_20260317171253.ts
@@ -0,0 +1,33 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    globalSetup: ['test/global-setup.ts'],
+    include: ['test/**/*.test.ts'],
+    testTimeout: 30000,
+    hookTimeout: 120000,
+    pool: 'forks',
+    globals: true,
+    setupFiles: ['test/setup.ts'],
+    teardownTimeout: 3000,
+    dangerouslyIgnoreUnhandledErrors: true, // LadybugDB N-API destructor segfaults on fork exit — not a test failure
+    coverage: {
+      provider: 'v8',
+      include: ['src/**/*.ts'],
+      exclude: [
+        'src/cli/index.ts',          // CLI entry point (commander wiring)
+        'src/server/**',              // HTTP server (requires network)
+        'src/core/wiki/**',           // Wiki generation (requires LLM)
+      ],
+      // Auto-ratchet: vitest bumps thresholds when coverage exceeds them.
+      // CI will fail if a PR drops below these floors.
+      thresholds: {
+        statements: 26,
+        branches: 23,
+        functions: 28,
+        lines: 27,
+        autoUpdate: true,
+      },
+    },
+  },
+});
diff --git a/AGENTS.md b/AGENTS.md
index afd54fc3e..5673d8410 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,7 +1,7 @@
 <!-- gitnexus:start -->
 # GitNexus — Code Intelligence
 
-This project is indexed by GitNexus as **GitNexus** (1999 symbols, 4681 relationships, 149 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+This project is indexed by GitNexus as **GitNexus** (2273 symbols, 5419 relationships, 174 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
 
 > If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
 
diff --git a/CLAUDE.md b/CLAUDE.md
index afd54fc3e..5673d8410 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,7 +1,7 @@
 <!-- gitnexus:start -->
 # GitNexus — Code Intelligence
 
-This project is indexed by GitNexus as **GitNexus** (1999 symbols, 4681 relationships, 149 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+This project is indexed by GitNexus as **GitNexus** (2273 symbols, 5419 relationships, 174 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
 
 > If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
 
diff --git a/README.md b/README.md
index 1f60e2442..5f2255889 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ https://github.com/user-attachments/assets/172685ba-8e54-4ea7-9ad1-e31a3398da72
 
 > *Like DeepWiki, but deeper.* DeepWiki helps you *understand* code. GitNexus lets you *analyze* it — because a knowledge graph tracks every relationship, not just descriptions.
 
-**TL;DR:** The **Web UI** is a quick way to chat with any repo. The **CLI + MCP** is how you make your AI agent actually reliable — it gives Cursor, Claude Code, and friends a deep architectural view of your codebase so they stop missing dependencies, breaking call chains, and shipping blind edits. Even smaller models get full architectural clarity, making it compete with goliath models.
+**TL;DR:** The **Web UI** is a quick way to chat with any repo. The **CLI + MCP** is how you make your AI agent actually reliable — it gives Cursor, Claude Code, Codex, and friends a deep architectural view of your codebase so they stop missing dependencies, breaking call chains, and shipping blind edits. Even smaller models get full architectural clarity, making it compete with goliath models.
 
 ---
 
@@ -48,7 +48,7 @@ https://github.com/user-attachments/assets/172685ba-8e54-4ea7-9ad1-e31a3398da72
 |                   | **CLI + MCP**                                            | **Web UI**                                             |
 | ----------------- | -------------------------------------------------------------- | ------------------------------------------------------------ |
 | **What**    | Index repos locally, connect AI agents via MCP                 | Visual graph explorer + AI chat in browser                   |
-| **For**     | Daily development with Cursor, Claude Code, Windsurf, OpenCode | Quick exploration, demos, one-off analysis                   |
+| **For**     | Daily development with Cursor, Claude Code, Codex, Windsurf, OpenCode | Quick exploration, demos, one-off analysis                   |
 | **Scale**   | Full repos, any size                                           | Limited by browser memory (~5k files), or unlimited via backend mode |
 | **Install** | `npm install -g gitnexus`                                    | No install —[gitnexus.vercel.app](https://gitnexus.vercel.app) |
 | **Storage** | LadybugDB native (fast, persistent)                               | LadybugDB WASM (in-memory, per session)                         |
@@ -84,16 +84,23 @@ To configure MCP for your editor, run `npx gitnexus setup` once — or set it up
 | --------------------- | --- | ------ | -------------------- | -------------- |
 | **Claude Code** | Yes | Yes    | Yes (PreToolUse + PostToolUse) | **Full** |
 | **Cursor**      | Yes | Yes    | —                   | MCP + Skills   |
+| **Codex**       | Yes | Yes    | —                   | MCP + Skills   |
 | **Windsurf**    | Yes | —     | —                   | MCP            |
 | **OpenCode**    | Yes | Yes    | —                   | MCP + Skills   |
+| **Codex**       | Yes | —     | —                   | MCP            |
 
 > **Claude Code** gets the deepest integration: MCP tools + agent skills + PreToolUse hooks that enrich searches with graph context + PostToolUse hooks that auto-reindex after commits.
 
-### Community Integrations
+## Community Integrations
 
-| Agent | Install | Source |
-|-------|---------|--------|
-| [pi](https://pi.dev) | `pi install npm:pi-gitnexus` | [pi-gitnexus](https://github.com/tintinweb/pi-gitnexus) |
+Built by the community — not officially maintained, but worth checking out.
+
+| Project | Author | Description |
+|---------|--------|-------------|
+| [pi-gitnexus](https://github.com/tintinweb/pi-gitnexus) | [@tintinweb](https://github.com/tintinweb) | GitNexus plugin for [pi](https://pi.dev) — `pi install npm:pi-gitnexus` |
+| [gitnexus-stable-ops](https://github.com/ShunsukeHayashi/gitnexus-stable-ops) | [@ShunsukeHayashi](https://github.com/ShunsukeHayashi) | Stable ops & deployment workflows (Miyabi ecosystem) |
+
+> Have a project built on GitNexus? Open a PR to add it here!
 
 If you prefer manual configuration:
 
@@ -103,6 +110,12 @@ If you prefer manual configuration:
 claude mcp add gitnexus -- npx -y gitnexus@latest mcp
 ```
 
+**Codex** (full support — MCP + skills):
+
+```bash
+codex mcp add gitnexus -- npx -y gitnexus@latest mcp
+```
+
 **Cursor** (`~/.cursor/mcp.json` — global, works for all projects):
 
 ```json
@@ -129,6 +142,14 @@ claude mcp add gitnexus -- npx -y gitnexus@latest mcp
 }
 ```
 
+**Codex** (`~/.codex/config.toml` for system scope, or `.codex/config.toml` for project scope):
+
+```toml
+[mcp_servers.gitnexus]
+command = "npx"
+args = ["-y", "gitnexus@latest", "mcp"]
+```
+
 ### CLI Commands
 
 ```bash
@@ -271,7 +292,7 @@ The web UI uses the same indexing pipeline as the CLI but runs entirely in WebAs
 
 ## The Problem GitNexus Solves
 
-Tools like **Cursor**, **Claude Code**, **Cline**, **Roo Code**, and **Windsurf** are powerful — but they don't truly know your codebase structure.
+Tools like **Cursor**, **Claude Code**, **Codex**, **Cline**, **Roo Code**, and **Windsurf** are powerful — but they don't truly know your codebase structure.
 
 **What happens:**
 
diff --git a/compound-engineering.local.md b/compound-engineering.local.md
new file mode 100644
index 000000000..0ad71c201
--- /dev/null
+++ b/compound-engineering.local.md
@@ -0,0 +1,57 @@
+---
+review_agents: [kieran-typescript-reviewer, pattern-recognition-specialist, architecture-strategist, data-integrity-guardian, security-sentinel, performance-oracle, code-simplicity-reviewer]
+plan_review_agents: [kieran-typescript-reviewer, architecture-strategist, code-simplicity-reviewer]
+voltagent_agents: [voltagent-lang:typescript-pro, voltagent-qa-sec:security-auditor, voltagent-data-ai:database-optimizer]
+---
+
+# Review Context
+
+## Project Overview
+GitNexus is a code intelligence tool that builds a knowledge graph from source code using tree-sitter AST parsing across 12 languages and KuzuDB for graph storage. Two packages: `gitnexus/` (CLI/MCP, TypeScript) and `gitnexus-web/` (browser).
+
+## Cross-Language Pattern Consistency (pattern-recognition-specialist)
+- 12 language-specific type extractors in `gitnexus/src/core/ingestion/type-extractors/` must follow identical patterns for: async unwrapping, constructor binding, namespace handling, nullable type stripping, for-loop element typing.
+- Past bugs: C#/Rust missing `await_expression` unwrapping that TypeScript handled correctly; PHP backslash namespace splitting inconsistent with other languages' `::` / `.` splitting.
+- When reviewing type extractor changes, verify the same pattern exists in ALL applicable language files — asymmetry is the #1 source of bugs.
+
+## Data Integrity (data-integrity-guardian)
+- KuzuDB graph operations: schema in `gitnexus/src/core/kuzu/schema.ts`, adapter in `kuzu-adapter.ts`.
+- The ingestion pipeline writes symbols and relationships to the graph — changes to node/relation schemas or the ingestion pipeline can corrupt the index.
+- Known issue: KuzuDB `close()` hangs on Linux due to C++ destructor — use `detachKuzu()` pattern.
+- `lbug-adapter.ts` fallback path needs quote/newline escaping for Cypher injection prevention.
+
+## Security (security-sentinel)
+- Cypher query construction in `lbug-adapter.ts` and `kuzu-adapter.ts` — watch for injection via unescaped user-provided symbol names.
+- CLI accepts `--repo` parameter and file paths — validate against path traversal.
+- MCP server exposes tools to external AI agents — all tool inputs are untrusted.
+
+## Performance (performance-oracle)
+- Tree-sitter buffer size is adaptive (512KB–32MB) via `getTreeSitterBufferSize()` in `constants.ts`.
+- The ingestion pipeline processes entire repositories — O(n) per file with potential O(n²) in cross-file resolution.
+- KuzuDB batch inserts vs individual inserts matter for large repos.
+
+## Architecture (architecture-strategist)
+- Ingestion pipeline phases: structure → parsing → imports → calls → heritage → processes → type resolution.
+- Shared modules: `export-detection.ts`, `constants.ts`, `utils.ts` — changes here have wide blast radius.
+- `gitnexus-web` package drifts behind CLI — flag if a change should be mirrored.
+
+## Voltagent Supplementary Agents
+
+Invoke these via the Agent tool alongside `/ce:review` for deeper specialist analysis. These cover gaps that compound-engineering agents don't:
+
+### voltagent-lang:typescript-pro
+**When:** Changes touch type-resolution logic, generics, conditional types, or complex type-level programming in `type-env.ts`, `type-extractors/*.ts`, or `types.ts`.
+**Why:** The type resolution system uses advanced TypeScript patterns (discriminated unions, mapped types, recursive generics) that benefit from deep TS type-system review beyond what kieran-typescript-reviewer covers.
+
+### voltagent-qa-sec:security-auditor
+**When:** Changes touch MCP tool handlers, Cypher query construction, CLI argument parsing, or any code that processes external input.
+**Why:** GitNexus is an MCP server — all tool inputs come from untrusted AI agents. Systematic OWASP-level audit catches injection vectors that spot-checking misses. Past finding: `lbug-adapter.ts` fallback path had unescaped newlines in Cypher queries.
+
+### voltagent-data-ai:database-optimizer
+**When:** Changes touch `kuzu-adapter.ts`, `schema.ts`, `lbug-adapter.ts`, or any Cypher query construction/execution.
+**Why:** No CE agent specializes in graph database optimization. KuzuDB batch insert patterns, index usage, and query planning directly affect analysis speed on large repos.
+
+## Review Tooling
+- Use `gitnexus_impact()` before approving changes to any symbol — check d=1 (WILL BREAK) callers.
+- Use `gitnexus_detect_changes({scope: "compare", base_ref: "main"})` to map PR diffs to affected execution flows.
+- Use claude-mem to surface past architectural decisions relevant to the code under review.
diff --git a/eval/bridge/mcp_bridge.py b/eval/bridge/mcp_bridge.py
index 1be0bde6e..c549c4d2b 100644
--- a/eval/bridge/mcp_bridge.py
+++ b/eval/bridge/mcp_bridge.py
@@ -2,7 +2,7 @@
 MCP Bridge for GitNexus
 
 Starts the GitNexus MCP server as a subprocess and provides a Python interface
-to call MCP tools. Used by the bash wrapper scripts and the augmentation layer.
+to call MCP tools. Used by the bash wrapper scripts and the augmentation layer..
 
 The bridge communicates with the MCP server via stdio using the JSON-RPC protocol.
 """
diff --git a/gitnexus-web/package.json b/gitnexus-web/package.json
index 25263b0b4..f20e0b35d 100644
--- a/gitnexus-web/package.json
+++ b/gitnexus-web/package.json
@@ -33,7 +33,7 @@
     "graphology-layout-noverlap": "^0.4.2",
     "isomorphic-git": "^1.36.1",
     "jszip": "^3.10.1",
-    "@ladybugdb/wasm-core": "^0.15.1",
+    "@ladybugdb/wasm-core": "^0.15.2",
     "langchain": "^1.2.10",
     "lru-cache": "^11.2.4",
     "lucide-react": "^0.562.0",
diff --git a/gitnexus-web/src/App.tsx b/gitnexus-web/src/App.tsx
index 2de2a4a34..72b78a5d9 100644
--- a/gitnexus-web/src/App.tsx
+++ b/gitnexus-web/src/App.tsx
@@ -40,6 +40,7 @@ const AppContent = () => {
     availableRepos,
     setAvailableRepos,
     switchRepo,
+    hydrateWorkerFromServer,
   } = useAppState();
 
   const graphCanvasRef = useRef<GraphCanvasHandle>(null);
@@ -157,21 +158,31 @@ const AppContent = () => {
 
     // Transition directly to exploring view
     setViewMode('exploring');
+    setProgress(null);
 
-    // Initialize agent if LLM is configured
-    if (getActiveProviderConfig()) {
-      initializeAgent(projectName);
-    }
+    // Hydrate the worker-side DB (LadybugDB + BM25) so Query/Processes/embeddings work
+    hydrateWorkerFromServer(result.nodes, result.relationships, result.fileContents).then(() => {
+      // Initialize agent if LLM is configured
+      if (getActiveProviderConfig()) {
+        initializeAgent(projectName);
+      }
 
-    // Auto-start embeddings
-    startEmbeddings().catch((err) => {
-      if (err?.name === 'WebGPUNotAvailableError' || err?.message?.includes('WebGPU')) {
-        startEmbeddings('wasm').catch(console.warn);
-      } else {
-        console.warn('Embeddings auto-start failed:', err);
+      // Auto-start embeddings (now that LadybugDB is ready)
+      startEmbeddings().catch((err) => {
+        if (err?.name === 'WebGPUNotAvailableError' || err?.message?.includes('WebGPU')) {
+          startEmbeddings('wasm').catch(console.warn);
+        } else {
+          console.warn('Embeddings auto-start failed:', err);
+        }
+      });
+    }).catch((err) => {
+      console.warn('Worker hydration failed (non-fatal):', err);
+      // Still initialize agent even if hydration fails
+      if (getActiveProviderConfig()) {
+        initializeAgent(projectName);
       }
     });
-  }, [setViewMode, setGraph, setFileContents, setProjectName, initializeAgent, startEmbeddings]);
+  }, [setViewMode, setGraph, setFileContents, setProjectName, setProgress, initializeAgent, startEmbeddings, hydrateWorkerFromServer]);
 
   // Auto-connect when ?server query param is present (bookmarkable shortcut)
   const autoConnectRan = useRef(false);
diff --git a/gitnexus-web/src/components/SettingsPanel.tsx b/gitnexus-web/src/components/SettingsPanel.tsx
index ab823d240..d60475107 100644
--- a/gitnexus-web/src/components/SettingsPanel.tsx
+++ b/gitnexus-web/src/components/SettingsPanel.tsx
@@ -281,7 +281,7 @@ export const SettingsPanel = ({ isOpen, onClose, onSettingsSaved, backendUrl, is
 
   if (!isOpen) return null;
 
-  const providers: LLMProvider[] = ['openai', 'gemini', 'anthropic', 'azure-openai', 'ollama', 'openrouter'];
+  const providers: LLMProvider[] = ['openai', 'gemini', 'anthropic', 'azure-openai', 'ollama', 'openrouter', 'minimax'];
 
 
   return (
@@ -366,7 +366,7 @@ export const SettingsPanel = ({ isOpen, onClose, onSettingsSaved, backendUrl, is
                     w-8 h-8 rounded-lg flex items-center justify-center text-lg
                     ${settings.activeProvider === provider ? 'bg-accent/20' : 'bg-surface'}
                   `}>
-                    {provider === 'openai' ? '🤖' : provider === 'gemini' ? '💎' : provider === 'anthropic' ? '🧠' : provider === 'ollama' ? '🦙' : provider === 'openrouter' ? '🌐' : '☁️'}
+                    {provider === 'openai' ? '🤖' : provider === 'gemini' ? '💎' : provider === 'anthropic' ? '🧠' : provider === 'ollama' ? '🦙' : provider === 'openrouter' ? '🌐' : provider === 'minimax' ? '⚡' : '☁️'}
                   </div>
                   <span className="font-medium">{getProviderDisplayName(provider)}</span>
                 </button>
@@ -814,7 +814,64 @@ export const SettingsPanel = ({ isOpen, onClose, onSettingsSaved, backendUrl, is
             </div>
           )}
 
+          {/* MiniMax Settings */}
+          {settings.activeProvider === 'minimax' && (
+            <div className="space-y-4 animate-fade-in">
+              <div className="space-y-2">
+                <label className="flex items-center gap-2 text-sm font-medium text-text-secondary">
+                  <Key className="w-4 h-4" />
+                  API Key
+                </label>
+                <div className="relative">
+                  <input
+                    type={showApiKey['minimax'] ? 'text' : 'password'}
+                    value={settings.minimax?.apiKey ?? ''}
+                    onChange={e => setSettings(prev => ({
+                      ...prev,
+                      minimax: { ...prev.minimax!, apiKey: e.target.value }
+                    }))}
+                    placeholder="Enter your MiniMax API key"
+                    className="w-full px-4 py-3 pr-12 bg-elevated border border-border-subtle rounded-xl text-text-primary placeholder:text-text-muted focus:border-accent focus:ring-2 focus:ring-accent/20 outline-none transition-all"
+                  />
+                  <button
+                    type="button"
+                    onClick={() => toggleApiKeyVisibility('minimax')}
+                    className="absolute right-3 top-1/2 -translate-y-1/2 p-1 text-text-muted hover:text-text-primary transition-colors"
+                  >
+                    {showApiKey['minimax'] ? <EyeOff className="w-4 h-4" /> : <Eye className="w-4 h-4" />}
+                  </button>
+                </div>
+                <p className="text-xs text-text-muted">
+                  Get your API key from{' '}
+                  <a
+                    href="https://platform.minimax.io"
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    className="text-accent hover:underline"
+                  >
+                    MiniMax Platform
+                  </a>
+                </p>
+              </div>
 
+              <div className="space-y-2">
+                <label className="text-sm font-medium text-text-secondary">Model</label>
+                <input
+                  type="text"
+                  value={settings.minimax?.model ?? 'MiniMax-M2.5'}
+                  onChange={e => setSettings(prev => ({
+                    ...prev,
+                    minimax: { ...prev.minimax!, model: e.target.value }
+                  }))}
+                  placeholder="e.g., MiniMax-M2.5, MiniMax-M2.5-highspeed"
+                  className="w-full px-4 py-3 bg-elevated border border-border-subtle rounded-xl text-text-primary placeholder:text-text-muted focus:border-accent focus:ring-2 focus:ring-accent/20 outline-none transition-all font-mono text-sm"
+                />
+                <p className="text-xs text-text-muted">
+                  Available models: MiniMax-M2.5 (default), MiniMax-M2.5-highspeed (faster)
+                </p>
+              </div>
+            </div>
+          )}
 
           {/* Privacy Note */}
           <div className="p-4 bg-elevated/50 border border-border-subtle rounded-xl">
diff --git a/gitnexus-web/src/config/supported-languages.ts b/gitnexus-web/src/config/supported-languages.ts
index 9282f16ed..4c51b56ab 100644
--- a/gitnexus-web/src/config/supported-languages.ts
+++ b/gitnexus-web/src/config/supported-languages.ts
@@ -10,5 +10,6 @@ export enum SupportedLanguages {
     Rust = 'rust',
     PHP = 'php',
     Ruby = 'ruby',
+    Kotlin = 'kotlin',
     Swift = 'swift',
 }
\ No newline at end of file
diff --git a/gitnexus-web/src/core/ingestion/call-routing.ts b/gitnexus-web/src/core/ingestion/call-routing.ts
index 96a9d54fd..5a112aca1 100644
--- a/gitnexus-web/src/core/ingestion/call-routing.ts
+++ b/gitnexus-web/src/core/ingestion/call-routing.ts
@@ -27,7 +27,7 @@ export type CallRouter = (
 const noRouting: CallRouter = () => null;
 
 /** Per-language call routing. noRouting = no special routing (normal call processing) */
-export const callRouters: Record<SupportedLanguages, CallRouter> = {
+export const callRouters = {
   [SupportedLanguages.JavaScript]: noRouting,
   [SupportedLanguages.TypeScript]: noRouting,
   [SupportedLanguages.Python]: noRouting,
@@ -40,7 +40,8 @@ export const callRouters: Record<SupportedLanguages, CallRouter> = {
   [SupportedLanguages.CPlusPlus]: noRouting,
   [SupportedLanguages.C]: noRouting,
   [SupportedLanguages.Ruby]: routeRubyCall,
-};
+  [SupportedLanguages.Kotlin]: noRouting,
+} satisfies Record<SupportedLanguages, CallRouter>;
 
 // ── Result types ────────────────────────────────────────────────────────────
 
diff --git a/gitnexus-web/src/core/ingestion/tree-sitter-queries.ts b/gitnexus-web/src/core/ingestion/tree-sitter-queries.ts
index acef63c85..65b67bcaf 100644
--- a/gitnexus-web/src/core/ingestion/tree-sitter-queries.ts
+++ b/gitnexus-web/src/core/ingestion/tree-sitter-queries.ts
@@ -495,6 +495,7 @@ export const LANGUAGE_QUERIES: Record<SupportedLanguages, string> = {
   [SupportedLanguages.Rust]: RUST_QUERIES,
   [SupportedLanguages.PHP]: PHP_QUERIES,
   [SupportedLanguages.Ruby]: RUBY_QUERIES,
+  [SupportedLanguages.Kotlin]: '', // Kotlin WASM parser not yet available for web
   [SupportedLanguages.Swift]: SWIFT_QUERIES,
 };
  
\ No newline at end of file
diff --git a/gitnexus-web/src/core/lbug/lbug-adapter.ts b/gitnexus-web/src/core/lbug/lbug-adapter.ts
index eed042ce2..916d4dacc 100644
--- a/gitnexus-web/src/core/lbug/lbug-adapter.ts
+++ b/gitnexus-web/src/core/lbug/lbug-adapter.ts
@@ -190,7 +190,7 @@ export const loadGraphToLbug = async (
     for (const tableName of NODE_TABLES) {
       try {
         const countRes = await conn.query(`MATCH (n:${tableName}) RETURN count(n) AS cnt`);
-        const countRows = await countRes.getAll();
+        const countRows = await (countRes.getAll?.() ?? countRes.getAllObjects?.() ?? countRes.getAllRows?.() ?? []);
         const countRow = countRows[0];
         const count = countRow ? (countRow.cnt ?? countRow[0] ?? 0) : 0;
         totalNodes += Number(count);
@@ -293,8 +293,8 @@ export const executeQuery = async (cypher: string): Promise<any[]> => {
       });
     }
 
-    // Collect all rows
-    const allRows = await result.getAll();
+    // Collect all rows (handle API differences across LadybugDB versions)
+    const allRows = await (result.getAll?.() ?? result.getAllObjects?.() ?? result.getAllRows?.() ?? []);
     const rows: any[] = [];
     for (const row of allRows) {
       // Convert tuple to named object if we have column names and row is array
@@ -331,7 +331,7 @@ export const getLbugStats = async (): Promise<{ nodes: number; edges: number }>
     for (const tableName of NODE_TABLES) {
       try {
         const nodeResult = await conn.query(`MATCH (n:${tableName}) RETURN count(n) AS cnt`);
-        const nodeRows = await nodeResult.getAll();
+        const nodeRows = await (nodeResult.getAll?.() ?? nodeResult.getAllObjects?.() ?? nodeResult.getAllRows?.() ?? []);
         const nodeRow = nodeRows[0];
         totalNodes += Number(nodeRow?.cnt ?? nodeRow?.[0] ?? 0);
       } catch {
@@ -343,7 +343,7 @@ export const getLbugStats = async (): Promise<{ nodes: number; edges: number }>
     let totalEdges = 0;
     try {
       const edgeResult = await conn.query(`MATCH ()-[r:${REL_TABLE_NAME}]->() RETURN count(r) AS cnt`);
-      const edgeRows = await edgeResult.getAll();
+      const edgeRows = await (edgeResult.getAll?.() ?? edgeResult.getAllObjects?.() ?? edgeResult.getAllRows?.() ?? []);
       const edgeRow = edgeRows[0];
       totalEdges = Number(edgeRow?.cnt ?? edgeRow?.[0] ?? 0);
     } catch {
@@ -408,7 +408,7 @@ export const executePrepared = async (
 
     const result = await conn.execute(stmt, params);
 
-    const rows = await result.getAll();
+    const rows = await (result.getAll?.() ?? result.getAllObjects?.() ?? result.getAllRows?.() ?? []);
 
     await stmt.close();
     return rows;
@@ -472,7 +472,7 @@ export const testArrayParams = async (): Promise<{ success: boolean; error?: str
     for (const tableName of NODE_TABLES) {
       try {
         const nodeResult = await conn.query(`MATCH (n:${tableName}) RETURN n.id AS id LIMIT 1`);
-        const nodeRows = await nodeResult.getAll();
+        const nodeRows = await (nodeResult.getAll?.() ?? nodeResult.getAllObjects?.() ?? nodeResult.getAllRows?.() ?? []);
         const nodeRow = nodeRows[0];
         if (nodeRow) {
           testNodeId = nodeRow.id ?? nodeRow[0];
@@ -509,7 +509,7 @@ export const testArrayParams = async (): Promise<{ success: boolean; error?: str
     const verifyResult = await conn.query(
       `MATCH (e:${EMBEDDING_TABLE_NAME} {nodeId: '${testNodeId}'}) RETURN e.embedding AS emb`
     );
-    const verifyRows = await verifyResult.getAll();
+    const verifyRows = await (verifyResult.getAll?.() ?? verifyResult.getAllObjects?.() ?? verifyResult.getAllRows?.() ?? []);
     const verifyRow = verifyRows[0];
     const storedEmb = verifyRow?.emb ?? verifyRow?.[0];
 
diff --git a/gitnexus-web/src/core/llm/agent.ts b/gitnexus-web/src/core/llm/agent.ts
index 6649f5742..88e07d40f 100644
--- a/gitnexus-web/src/core/llm/agent.ts
+++ b/gitnexus-web/src/core/llm/agent.ts
@@ -13,14 +13,15 @@ import { ChatAnthropic } from '@langchain/anthropic';
 import { ChatOllama } from '@langchain/ollama';
 import type { BaseChatModel } from '@langchain/core/language_models/chat_models';
 import { createGraphRAGTools } from './tools';
-import type { 
-  ProviderConfig, 
+import type {
+  ProviderConfig,
   OpenAIConfig,
-  AzureOpenAIConfig, 
+  AzureOpenAIConfig,
   GeminiConfig,
   AnthropicConfig,
   OllamaConfig,
   OpenRouterConfig,
+  MiniMaxConfig,
   AgentStreamChunk,
 } from './types';
 import { 
@@ -197,7 +198,7 @@ export const createChatModel = (config: ProviderConfig): BaseChatModel => {
     
     case 'openrouter': {
       const openRouterConfig = config as OpenRouterConfig;
-      
+
       // Debug logging
       if (import.meta.env.DEV) {
         console.log('🌐 OpenRouter config:', {
@@ -207,11 +208,11 @@ export const createChatModel = (config: ProviderConfig): BaseChatModel => {
           baseUrl: openRouterConfig.baseUrl,
         });
       }
-      
+
       if (!openRouterConfig.apiKey || openRouterConfig.apiKey.trim() === '') {
         throw new Error('OpenRouter API key is required but was not provided');
       }
-      
+
       return new ChatOpenAI({
         openAIApiKey: openRouterConfig.apiKey,
         apiKey: openRouterConfig.apiKey, // Fallback for some versions
@@ -225,7 +226,26 @@ export const createChatModel = (config: ProviderConfig): BaseChatModel => {
         streaming: true,
       });
     }
-    
+
+    case 'minimax': {
+      const minimaxConfig = config as MiniMaxConfig;
+
+      if (!minimaxConfig.apiKey || minimaxConfig.apiKey.trim() === '') {
+        throw new Error('MiniMax API key is required but was not provided');
+      }
+
+      return new ChatAnthropic({
+        anthropicApiKey: minimaxConfig.apiKey,
+        model: minimaxConfig.model,
+        temperature: minimaxConfig.temperature ?? 0.1,
+        maxTokens: minimaxConfig.maxTokens ?? 8192,
+        streaming: true,
+        clientOptions: {
+          baseURL: 'https://api.minimax.io/anthropic',
+        },
+      });
+    }
+
     default:
       throw new Error(`Unsupported provider: ${(config as any).provider}`);
   }
diff --git a/gitnexus-web/src/core/llm/settings-service.ts b/gitnexus-web/src/core/llm/settings-service.ts
index 0c35b9623..f4ef5993a 100644
--- a/gitnexus-web/src/core/llm/settings-service.ts
+++ b/gitnexus-web/src/core/llm/settings-service.ts
@@ -5,9 +5,9 @@
  * All API keys are stored locally - never sent to any server except the LLM provider.
  */
 
-import { 
-  LLMSettings, 
-  DEFAULT_LLM_SETTINGS, 
+import {
+  LLMSettings,
+  DEFAULT_LLM_SETTINGS,
   LLMProvider,
   OpenAIConfig,
   AzureOpenAIConfig,
@@ -15,6 +15,7 @@ import {
   AnthropicConfig,
   OllamaConfig,
   OpenRouterConfig,
+  MiniMaxConfig,
   ProviderConfig,
 } from './types';
 
@@ -60,6 +61,10 @@ export const loadSettings = (): LLMSettings => {
         ...DEFAULT_LLM_SETTINGS.openrouter,
         ...parsed.openrouter,
       },
+      minimax: {
+        ...DEFAULT_LLM_SETTINGS.minimax,
+        ...parsed.minimax,
+      },
     };
   } catch (error) {
     console.warn('Failed to load LLM settings:', error);
@@ -89,6 +94,7 @@ export const updateProviderSettings = <T extends LLMProvider>(
     T extends 'gemini' ? Partial<Omit<GeminiConfig, 'provider'>> :
     T extends 'anthropic' ? Partial<Omit<AnthropicConfig, 'provider'>> :
     T extends 'ollama' ? Partial<Omit<OllamaConfig, 'provider'>> :
+    T extends 'minimax' ? Partial<Omit<MiniMaxConfig, 'provider'>> :
     never
   >
 ): LLMSettings => {
@@ -162,6 +168,17 @@ export const updateProviderSettings = <T extends LLMProvider>(
       saveSettings(updated);
       return updated;
     }
+    case 'minimax': {
+      const updated: LLMSettings = {
+        ...current,
+        minimax: {
+          ...(current.minimax ?? {}),
+          ...(updates as Partial<Omit<MiniMaxConfig, 'provider'>>),
+        },
+      };
+      saveSettings(updated);
+      return updated;
+    }
     default: {
       // Should be unreachable due to T extends LLMProvider, but keep a safe fallback
       const updated: LLMSettings = { ...current };
@@ -245,7 +262,16 @@ export const getActiveProviderConfig = (): ProviderConfig | null => {
         temperature: settings.openrouter.temperature,
         maxTokens: settings.openrouter.maxTokens,
       } as OpenRouterConfig;
-      
+
+    case 'minimax':
+      if (!settings.minimax?.apiKey) {
+        return null;
+      }
+      return {
+        provider: 'minimax',
+        ...settings.minimax,
+      } as MiniMaxConfig;
+
     default:
       return null;
   }
@@ -282,6 +308,8 @@ export const getProviderDisplayName = (provider: LLMProvider): string => {
       return 'Ollama (Local)';
     case 'openrouter':
       return 'OpenRouter';
+    case 'minimax':
+      return 'MiniMax';
     default:
       return provider;
   }
@@ -303,6 +331,8 @@ export const getAvailableModels = (provider: LLMProvider): string[] => {
       return ['claude-sonnet-4-20250514', 'claude-3-5-sonnet-20241022', 'claude-3-5-haiku-20241022', 'claude-3-opus-20240229'];
     case 'ollama':
       return ['llama3.2', 'llama3.1', 'mistral', 'codellama', 'deepseek-coder'];
+    case 'minimax':
+      return ['MiniMax-M2.5', 'MiniMax-M2.5-highspeed'];
     default:
       return [];
   }
diff --git a/gitnexus-web/src/core/llm/types.ts b/gitnexus-web/src/core/llm/types.ts
index 8e43673fa..d2597ec18 100644
--- a/gitnexus-web/src/core/llm/types.ts
+++ b/gitnexus-web/src/core/llm/types.ts
@@ -8,7 +8,7 @@
 /**
  * Supported LLM providers
  */
-export type LLMProvider = 'openai' | 'azure-openai' | 'gemini' | 'anthropic' | 'ollama' | 'openrouter';
+export type LLMProvider = 'openai' | 'azure-openai' | 'gemini' | 'anthropic' | 'ollama' | 'openrouter' | 'minimax';
 
 /**
  * Base configuration shared by all providers
@@ -78,10 +78,19 @@ export interface OpenRouterConfig extends BaseProviderConfig {
   baseUrl?: string;  // defaults to https://openrouter.ai/api/v1
 }
 
+/**
+ * MiniMax configuration (Anthropic-compatible API)
+ */
+export interface MiniMaxConfig extends BaseProviderConfig {
+  provider: 'minimax';
+  apiKey: string;
+  model: string;  // e.g., 'MiniMax-M2.5', 'MiniMax-M2.5-highspeed'
+}
+
 /**
  * Union type for all provider configurations
  */
-export type ProviderConfig = OpenAIConfig | AzureOpenAIConfig | GeminiConfig | AnthropicConfig | OllamaConfig | OpenRouterConfig;
+export type ProviderConfig = OpenAIConfig | AzureOpenAIConfig | GeminiConfig | AnthropicConfig | OllamaConfig | OpenRouterConfig | MiniMaxConfig;
 
 /**
  * Stored settings (what goes to localStorage)
@@ -98,6 +107,7 @@ export interface LLMSettings {
   anthropic?: Partial<Omit<AnthropicConfig, 'provider'>>;
   ollama?: Partial<Omit<OllamaConfig, 'provider'>>;
   openrouter?: Partial<Omit<OpenRouterConfig, 'provider'>>;
+  minimax?: Partial<Omit<MiniMaxConfig, 'provider'>>;
 
   // Intelligent Clustering Settings
   intelligentClustering: boolean;
@@ -148,6 +158,11 @@ export const DEFAULT_LLM_SETTINGS: LLMSettings = {
     baseUrl: 'https://openrouter.ai/api/v1',
     temperature: 0.1,
   },
+  minimax: {
+    apiKey: '',
+    model: 'MiniMax-M2.5',
+    temperature: 0.1,
+  },
 };
 
 /**
diff --git a/gitnexus-web/src/core/tree-sitter/parser-loader.ts b/gitnexus-web/src/core/tree-sitter/parser-loader.ts
index 7a4d6a85d..44bc7c37d 100644
--- a/gitnexus-web/src/core/tree-sitter/parser-loader.ts
+++ b/gitnexus-web/src/core/tree-sitter/parser-loader.ts
@@ -41,6 +41,7 @@ const getWasmPath = (language: SupportedLanguages, filePath?: string): string =>
         [SupportedLanguages.Rust]: '/wasm/rust/tree-sitter-rust.wasm',
         [SupportedLanguages.PHP]: '/wasm/php/tree-sitter-php.wasm',
         [SupportedLanguages.Ruby]: '/wasm/ruby/tree-sitter-ruby.wasm',
+        [SupportedLanguages.Kotlin]: '', // Kotlin WASM parser not yet available for web
         [SupportedLanguages.Swift]: '/wasm/swift/tree-sitter-swift.wasm',
     };
     
diff --git a/gitnexus-web/src/hooks/useAppState.tsx b/gitnexus-web/src/hooks/useAppState.tsx
index 233a710ee..843f967d7 100644
--- a/gitnexus-web/src/hooks/useAppState.tsx
+++ b/gitnexus-web/src/hooks/useAppState.tsx
@@ -125,6 +125,7 @@ interface AppState {
   runPipelineFromFiles: (files: FileEntry[], onProgress: (p: PipelineProgress) => void, clusteringConfig?: ProviderConfig) => Promise<PipelineResult>;
   runQuery: (cypher: string) => Promise<any[]>;
   isDatabaseReady: () => Promise<boolean>;
+  hydrateWorkerFromServer: (nodes: any[], relationships: any[], fileContents: Record<string, string>) => Promise<void>;
 
   // Embedding state
   embeddingStatus: EmbeddingStatus;
@@ -482,6 +483,16 @@ export const AppStateProvider = ({ children }: { children: ReactNode }) => {
     }
   }, []);
 
+  const hydrateWorkerFromServer = useCallback(async (
+    nodes: any[],
+    relationships: any[],
+    fileContents: Record<string, string>
+  ): Promise<void> => {
+    const api = apiRef.current;
+    if (!api) throw new Error('Worker not initialized');
+    await api.hydrateFromServerData(nodes, relationships, fileContents);
+  }, []);
+
   // Embedding methods
   const startEmbeddings = useCallback(async (forceDevice?: 'webgpu' | 'wasm'): Promise<void> => {
     const api = apiRef.current;
@@ -1018,15 +1029,23 @@ export const AppStateProvider = ({ children }: { children: ReactNode }) => {
       setFileContents(fileMap);
 
       setViewMode('exploring');
+      setProgress(null);
 
-      if (getActiveProviderConfig()) initializeAgent(pName);
+      // Hydrate the worker-side DB (LadybugDB + BM25) so Query/Processes/embeddings work
+      hydrateWorkerFromServer(result.nodes, result.relationships, result.fileContents).then(() => {
+        if (getActiveProviderConfig()) initializeAgent(pName);
 
-      startEmbeddings().catch((err) => {
-        if (err?.name === 'WebGPUNotAvailableError' || err?.message?.includes('WebGPU')) {
-          startEmbeddings('wasm').catch(console.warn);
-        } else {
-          console.warn('Embeddings auto-start failed:', err);
-        }
+        startEmbeddings().catch((err) => {
+          if (err?.name === 'WebGPUNotAvailableError' || err?.message?.includes('WebGPU')) {
+            startEmbeddings('wasm').catch(console.warn);
+          } else {
+            console.warn('Embeddings auto-start failed:', err);
+          }
+        });
+      }).catch((err) => {
+        console.warn('Worker hydration failed (non-fatal):', err);
+        // Still initialize agent even if hydration fails
+        if (getActiveProviderConfig()) initializeAgent(pName);
       });
     } catch (err) {
       console.error('Repo switch failed:', err);
@@ -1037,7 +1056,7 @@ export const AppStateProvider = ({ children }: { children: ReactNode }) => {
       });
       setTimeout(() => { setViewMode('exploring'); setProgress(null); }, 3000);
     }
-  }, [serverBaseUrl, setProgress, setViewMode, setProjectName, setGraph, setFileContents, initializeAgent, startEmbeddings, setHighlightedNodeIds, clearAIToolHighlights, clearBlastRadius, setSelectedNode, setQueryResult, setCodeReferences, setCodePanelOpen, setCodeReferenceFocus]);
+  }, [serverBaseUrl, setProgress, setViewMode, setProjectName, setGraph, setFileContents, initializeAgent, startEmbeddings, hydrateWorkerFromServer, setHighlightedNodeIds, clearAIToolHighlights, clearBlastRadius, setSelectedNode, setQueryResult, setCodeReferences, setCodePanelOpen, setCodeReferenceFocus]);
 
   const removeCodeReference = useCallback((id: string) => {
     setCodeReferences(prev => {
@@ -1142,6 +1161,7 @@ export const AppStateProvider = ({ children }: { children: ReactNode }) => {
     runPipelineFromFiles,
     runQuery,
     isDatabaseReady,
+    hydrateWorkerFromServer,
     // Embedding state and methods
     embeddingStatus,
     embeddingProgress,
diff --git a/gitnexus-web/src/workers/ingestion.worker.ts b/gitnexus-web/src/workers/ingestion.worker.ts
index 0f36d8577..54974ca56 100644
--- a/gitnexus-web/src/workers/ingestion.worker.ts
+++ b/gitnexus-web/src/workers/ingestion.worker.ts
@@ -1,5 +1,7 @@
 import * as Comlink from 'comlink';
 import { runIngestionPipeline, runPipelineFromFiles } from '../core/ingestion/pipeline';
+import { createKnowledgeGraph } from '../core/graph/graph';
+import type { GraphNode, GraphRelationship } from '../core/graph/types';
 import { PipelineProgress, SerializablePipelineResult, serializePipelineResult } from '../types/pipeline';
 import { FileEntry } from '../services/zip';
 import {
@@ -207,6 +209,50 @@ const workerApi = {
     return serializePipelineResult(result);
   },
 
+  /**
+   * Hydrate the worker-side database and indexes from server-loaded data.
+   * This is the missing step when using server/bridge mode — the main thread
+   * builds the React graph, but the worker's LadybugDB + BM25 stay empty.
+   */
+  async hydrateFromServerData(
+    nodes: GraphNode[],
+    relationships: GraphRelationship[],
+    fileContents: Record<string, string>
+  ): Promise<void> {
+    // 1. Build a KnowledgeGraph the same way the pipeline does
+    const graph = createKnowledgeGraph();
+    for (const node of nodes) graph.addNode(node);
+    for (const rel of relationships) graph.addRelationship(rel);
+
+    // 2. Store file contents for grep/read tools
+    storedFileContents = new Map(Object.entries(fileContents));
+
+    // 3. Build BM25 keyword index
+    const bm25DocCount = buildBM25Index(storedFileContents);
+    if (import.meta.env.DEV) {
+      console.log(`🔍 BM25 index built (server mode): ${bm25DocCount} documents`);
+    }
+
+    // 4. Set currentGraphResult so the agent context builder works
+    currentGraphResult = { graph, fileContents: storedFileContents };
+
+    // 5. Load graph into LadybugDB for Cypher queries (optional — gracefully degrades)
+    try {
+      const lbug = await getLbugAdapter();
+      await lbug.loadGraphToLbug(graph, storedFileContents);
+
+      if (import.meta.env.DEV) {
+        const stats = await lbug.getLbugStats();
+        console.log('✅ LadybugDB hydrated (server mode):', stats);
+      }
+    } catch (err) {
+      // LadybugDB is optional — silently continue without it
+      if (import.meta.env.DEV) {
+        console.warn('⚠️ LadybugDB hydration failed (non-fatal):', err);
+      }
+    }
+  },
+
   /**
    * Execute a Cypher query against the LadybugDB database
    * @param cypher - The Cypher query string
diff --git a/gitnexus/CHANGELOG.md b/gitnexus/CHANGELOG.md
new file mode 100644
index 000000000..ad265edb0
--- /dev/null
+++ b/gitnexus/CHANGELOG.md
@@ -0,0 +1,99 @@
+# Changelog
+
+All notable changes to GitNexus will be documented in this file.
+
+## [1.4.7] - 2026-03-19
+
+### Added
+- **Phase 8 field/property type resolution** — ACCESSES edges with `declaredType` for field reads/writes (#354)
+- **Phase 9 return-type variable binding** — call-result variable binding across 11 languages (#379)
+  - `extractPendingAssignment` in per-language type extractors captures `let x = getUser()` patterns
+  - Unified fixpoint loop resolves variable types from function return types after initial walk
+  - Field access on call-result variables: `user.name` resolves `name` via return type's class definition
+  - Method-call-result chaining: `user.getProfile().bio` resolves through intermediate return types
+  - 22 new test fixtures covering call-result and method-chain binding across all supported languages
+  - Integration tests added for all 10 language resolver suites
+- **ACCESSES edge type** with read/write field access tracking (#372)
+- **Python `enumerate()` for-loop support** with nested tuple patterns (#356)
+- **MCP tool/resource descriptions** updated to reflect Phase 9 ACCESSES edge semantics and `declaredType` property
+
+### Fixed
+- **mcp**: server crashes under parallel tool calls (#326, #349)
+- **parsing**: undefined error on languages missing from call routers (#364)
+- **web**: add missing Kotlin entries to `Record<SupportedLanguages>` maps
+- **rust**: `await` expression unwrapping in `extractPendingAssignment` for async call-result binding
+- **tests**: update property edge and write access expectations across multiple language tests
+- **docs**: corrected stale "single-pass" claims in type-resolution-system.md to reflect walk+fixpoint architecture
+
+### Changed
+- **Upgrade `@ladybugdb/core` to 0.15.2** and remove segfault workarounds (#374)
+- **type-resolution-roadmap.md** overhauled — completed phases condensed to summaries, Phases 10–14 added with full engineering specs
+
+## [1.4.6] - 2026-03-18
+
+### Added
+- **Phase 7 type resolution** — return-aware loop inference for call-expression iterables (#341)
+  - `ReturnTypeLookup` interface with `lookupReturnType` / `lookupRawReturnType` split
+  - `ForLoopExtractorContext` context object replacing positional `(node, env)` signature
+  - Call-expression iterable resolution across 8 languages (TS/JS, Java, Kotlin, C#, Go, Rust, Python, PHP)
+  - PHP `$this->property` foreach via `@var` class property scan (Strategy C)
+  - PHP `function_call_expression` and `member_call_expression` foreach paths
+  - `extractElementTypeFromString` as canonical raw-string container unwrapper in `shared.ts`
+  - `extractReturnTypeName` deduplicated from `call-processor.ts` into `shared.ts` (137 lines removed)
+  - `SKIP_SUBTREE_TYPES` performance optimization with documented `template_string` exclusion
+  - `pendingCallResults` infrastructure (dormant — Phase 9 work)
+
+### Fixed
+- **impact**: return structured error + partial results instead of crashing (#345)
+- **impact**: add `HAS_METHOD` and `OVERRIDES` to `VALID_RELATION_TYPES` (#350)
+- **cli**: write tool output to stdout via fd 1 instead of stderr (#346)
+- **postinstall**: add permission fix for CLI and hook scripts (#348)
+- **workflow**: use prefixed temporary branch name for fork PRs to prevent overwriting real branches
+- **test**: add `--repo` to CLI e2e tool tests for multi-repo environment
+- **php**: add `declaration_list` type guard on `findClassPropertyElementType` fallback
+- **docs**: correct `pendingCallResults` description in roadmap and system docs
+
+### Chore
+- Add `.worktrees/` to `.gitignore`
+
+## [1.4.5] - 2026-03-17
+
+### Added
+- **Ruby language support** for CLI and web (#111)
+- **TypeEnvironment API** with constructor inference, self/this/super resolution (#274)
+- **Return type inference** with doc-comment parsing (JSDoc, PHPDoc, YARD) and per-language type extractors (#284)
+- **Phase 4 type resolution** — nullable unwrapping, for-loop typing, assignment chain propagation (#310)
+- **Phase 5 type resolution** — chained calls, pattern matching, class-as-receiver (#315)
+- **Phase 6 type resolution** — for-loop Tier 1c, pattern matching, container descriptors, 10-language coverage (#318)
+  - Container descriptor table for generic type argument resolution (Map keys vs values)
+  - Method-aware for-loop extractors with integration tests for all languages
+  - Recursive pattern binding (C# `is` patterns, Kotlin `when/is` smart casts)
+  - Class field declaration unwrapping for C#/Java
+  - PHP `$this->property` foreach member access
+  - C++ pointer dereference range-for
+  - Java `this.data.values()` field access patterns
+  - Position-indexed when/is bindings for branch-local narrowing
+- **Type resolution system documentation** with architecture guide and roadmap
+- `.gitignore` and `.gitnexusignore` support during file discovery (#231)
+- Codex MCP configuration documentation in README (#236)
+- `skipGraphPhases` pipeline option to skip MRO/community/process phases for faster test runs
+- `hookTimeout: 120000` in vitest config for CI beforeAll hooks
+
+### Changed
+- **Migrated from KuzuDB to LadybugDB v0.15** (#275)
+- Dynamically discover and install agent skills in CLI (#270)
+
+### Performance
+- Worker pool threshold — skip worker creation for small repos (<15 files or <512KB total)
+- AST walk pruning via `SKIP_SUBTREE_TYPES` for leaf-only nodes (string, comment, number literals)
+- Pre-computed `interestingNodeTypes` set — single Set.has() replaces 3 checks per AST node
+- `fastStripNullable` — skip full nullable parsing for simple identifiers (90%+ case)
+- Replace `.children?.find()` with manual for loops in `extractFunctionName` to eliminate array allocations
+
+### Fixed
+- Same-directory Python import resolution (#328)
+- Ruby method-level call resolution, HAS_METHOD edges, and dispatch table (#278)
+- C++ fixture file casing for case-sensitive CI
+- Template string incorrectly included in AST pruning set (contains interpolated expressions)
+
+## [1.4.0] - Previous release
diff --git a/gitnexus/README.md b/gitnexus/README.md
index bb90ebb04..e4fe5b623 100644
--- a/gitnexus/README.md
+++ b/gitnexus/README.md
@@ -2,7 +2,7 @@
 
 **Graph-powered code intelligence for AI agents.** Index any codebase into a knowledge graph, then query it via MCP or CLI.
 
-Works with **Cursor**, **Claude Code**, **Windsurf**, **Cline**, **OpenCode**, and any MCP-compatible tool.
+Works with **Cursor**, **Claude Code**, **Codex**, **Windsurf**, **Cline**, **OpenCode**, and any MCP-compatible tool.
 
 [![npm version](https://img.shields.io/npm/v/gitnexus.svg)](https://www.npmjs.com/package/gitnexus)
 [![License: PolyForm Noncommercial](https://img.shields.io/badge/License-PolyForm%20Noncommercial-blue.svg)](https://polyformproject.org/licenses/noncommercial/1.0.0/)
@@ -34,6 +34,7 @@ To configure MCP for your editor, run `npx gitnexus setup` once — or set it up
 |--------|-----|--------|---------------------|---------|
 | **Claude Code** | Yes | Yes | Yes (PreToolUse) | **Full** |
 | **Cursor** | Yes | Yes | — | MCP + Skills |
+| **Codex** | Yes | Yes | — | MCP + Skills |
 | **Windsurf** | Yes | — | — | MCP |
 | **OpenCode** | Yes | Yes | — | MCP + Skills |
 
@@ -55,6 +56,12 @@ If you prefer to configure manually instead of using `gitnexus setup`:
 claude mcp add gitnexus -- npx -y gitnexus@latest mcp
 ```
 
+### Codex (full support — MCP + skills)
+
+```bash
+codex mcp add gitnexus -- npx -y gitnexus@latest mcp
+```
+
 ### Cursor / Windsurf
 
 Add to `~/.cursor/mcp.json` (global — works for all projects):
diff --git a/gitnexus/hooks/claude/gitnexus-hook.cjs b/gitnexus/hooks/claude/gitnexus-hook.cjs
old mode 100644
new mode 100755
diff --git a/gitnexus/hooks/claude/pre-tool-use.sh b/gitnexus/hooks/claude/pre-tool-use.sh
old mode 100644
new mode 100755
diff --git a/gitnexus/hooks/claude/session-start.sh b/gitnexus/hooks/claude/session-start.sh
old mode 100644
new mode 100755
diff --git a/gitnexus/package-lock.json b/gitnexus/package-lock.json
index 679687ade..ff28a06d8 100644
--- a/gitnexus/package-lock.json
+++ b/gitnexus/package-lock.json
@@ -1,17 +1,17 @@
 {
   "name": "gitnexus",
-  "version": "1.4.0",
+  "version": "1.4.7",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "gitnexus",
-      "version": "1.4.0",
+      "version": "1.4.7",
       "hasInstallScript": true,
       "license": "PolyForm-Noncommercial-1.0.0",
       "dependencies": {
         "@huggingface/transformers": "^3.0.0",
-        "@ladybugdb/core": "^0.15.1",
+        "@ladybugdb/core": "^0.15.2",
         "@modelcontextprotocol/sdk": "^1.0.0",
         "cli-progress": "^3.12.0",
         "commander": "^12.0.0",
@@ -21,6 +21,7 @@
         "graphology": "^0.25.4",
         "graphology-indices": "^0.17.0",
         "graphology-utils": "^2.3.0",
+        "ignore": "^7.0.5",
         "lru-cache": "^11.0.0",
         "mnemonist": "^0.39.0",
         "onnxruntime-node": "^1.24.0",
@@ -606,29 +607,6 @@
         "sharp": "^0.34.1"
       }
     },
-    "node_modules/@huggingface/transformers/node_modules/onnxruntime-common": {
-      "version": "1.21.0",
-      "resolved": "https://registry.npmjs.org/onnxruntime-common/-/onnxruntime-common-1.21.0.tgz",
-      "integrity": "sha512-Q632iLLrtCAVOTO65dh2+mNbQir/QNTVBG3h/QdZBpns7mZ0RYbLRBgGABPbpU9351AgYy7SJf1WaeVwMrBFPQ==",
-      "license": "MIT"
-    },
-    "node_modules/@huggingface/transformers/node_modules/onnxruntime-node": {
-      "version": "1.21.0",
-      "resolved": "https://registry.npmjs.org/onnxruntime-node/-/onnxruntime-node-1.21.0.tgz",
-      "integrity": "sha512-NeaCX6WW2L8cRCSqy3bInlo5ojjQqu2fD3D+9W5qb5irwxhEyWKXeH2vZ8W9r6VxaMPUan+4/7NDwZMtouZxEw==",
-      "hasInstallScript": true,
-      "license": "MIT",
-      "os": [
-        "win32",
-        "darwin",
-        "linux"
-      ],
-      "dependencies": {
-        "global-agent": "^3.0.0",
-        "onnxruntime-common": "1.21.0",
-        "tar": "^7.0.1"
-      }
-    },
     "node_modules/@img/colour": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/@img/colour/-/colour-1.0.0.tgz",
@@ -1173,14 +1151,81 @@
       }
     },
     "node_modules/@ladybugdb/core": {
-      "version": "0.15.1",
-      "resolved": "https://registry.npmjs.org/@ladybugdb/core/-/core-0.15.1.tgz",
-      "integrity": "sha512-a+jhzIlS2+57Y2YWXlta7Dq5A3577dQ8YO7DzPCFZxozeiGIZn0K9v0ROO+ws4PW9BwuQYI5BXQxTEtaa1Otlg==",
+      "version": "0.15.2",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core/-/core-0.15.2.tgz",
+      "integrity": "sha512-DpseEj9CM/QTV0z+rvBk6nB2mOoG4GVhnKKLiXChGTVddgpH6R/Pv2YiDZB7rUIDnFpJxVQNbQaYEkZ7i1h1KA==",
       "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
         "cmake-js": "^8.0.0",
         "node-addon-api": "^6.0.0"
+      },
+      "optionalDependencies": {
+        "@ladybugdb/core-darwin-arm64": "0.15.2",
+        "@ladybugdb/core-linux-arm64": "0.15.2",
+        "@ladybugdb/core-linux-x64": "0.15.2",
+        "@ladybugdb/core-win32-x64": "0.15.2"
+      }
+    },
+    "node_modules/@ladybugdb/core-darwin-arm64": {
+      "version": "0.15.2",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-darwin-arm64/-/core-darwin-arm64-0.15.2.tgz",
+      "integrity": "sha512-ifLyUTPzlh2zR1IqkUT5AfldX+X4zfWBzwakmGTgMPxyrEiRNDwUKfnNxHeLQ/TJTOS/nfzYxxLLt5CZf2/FhA==",
+      "cpu": [
+        "arm64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ]
+    },
+    "node_modules/@ladybugdb/core-linux-arm64": {
+      "version": "0.15.2",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-arm64/-/core-linux-arm64-0.15.2.tgz",
+      "integrity": "sha512-9537UbHOiuSr/BaTfjcoBsHxEKF4uEXWyXEjm/AQCGXQFocX3nQDVNDYJzuDYjKZ51oJRJ0oSuesAStOCwjolA==",
+      "cpu": [
+        "arm64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@ladybugdb/core-linux-x64": {
+      "version": "0.15.2",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-linux-x64/-/core-linux-x64-0.15.2.tgz",
+      "integrity": "sha512-1+xLoapjbMQzDHxcPpMPt8Suuvms3nhOIZFNGPDcWz90NwEmLAjWNFQZZHeg8DRz0vG2j8UY292bvGORVcxs8g==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@ladybugdb/core-win32-x64": {
+      "version": "0.15.2",
+      "resolved": "https://registry.npmjs.org/@ladybugdb/core-win32-x64/-/core-win32-x64-0.15.2.tgz",
+      "integrity": "sha512-+LIJVKBNSrf2bGruJO4l0ihrLKZkv5+lNitK8xc3T7gC1bcc+FaYtRMvlgZP6Qh2rEHAjqfbaSKVrdw0M2EXTw==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
+    "node_modules/@ladybugdb/core/node_modules/chownr": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-3.0.0.tgz",
+      "integrity": "sha512-+IxzY9BZOQd/XuYPRmrvEVjF/nqj5kgT4kEq7VofrDoM1MxoRjEWkrCC3EtLi59TVawxTAn+orJwFQcrqEN1+g==",
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": ">=18"
       }
     },
     "node_modules/@ladybugdb/core/node_modules/cmake-js": {
@@ -1232,12 +1277,40 @@
         "node": ">=20"
       }
     },
+    "node_modules/@ladybugdb/core/node_modules/minizlib": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-3.1.0.tgz",
+      "integrity": "sha512-KZxYo1BUkWD2TVFLr0MQoM8vUUigWD3LlD83a/75BqC+4qE0Hb1Vo5v1FgcfaNXvfXzr+5EhQ6ing/CaBijTlw==",
+      "license": "MIT",
+      "dependencies": {
+        "minipass": "^7.1.2"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
     "node_modules/@ladybugdb/core/node_modules/ms": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
       "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
       "license": "MIT"
     },
+    "node_modules/@ladybugdb/core/node_modules/tar": {
+      "version": "7.5.11",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-7.5.11.tgz",
+      "integrity": "sha512-ChjMH33/KetonMTAtpYdgUFr0tbz69Fp2v7zWxQfYZX4g5ZN2nOBXm1R2xyA+lMIKrLKIoKAwFj93jE/avX9cQ==",
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "@isaacs/fs-minipass": "^4.0.0",
+        "chownr": "^3.0.0",
+        "minipass": "^7.1.2",
+        "minizlib": "^3.1.0",
+        "yallist": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@ladybugdb/core/node_modules/which": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/which/-/which-6.0.1.tgz",
@@ -1253,6 +1326,15 @@
         "node": "^20.17.0 || >=22.9.0"
       }
     },
+    "node_modules/@ladybugdb/core/node_modules/yallist": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz",
+      "integrity": "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw==",
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@modelcontextprotocol/sdk": {
       "version": "1.25.3",
       "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.25.3.tgz",
@@ -2510,15 +2592,6 @@
         "node": ">=18"
       }
     },
-    "node_modules/chownr": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/chownr/-/chownr-3.0.0.tgz",
-      "integrity": "sha512-+IxzY9BZOQd/XuYPRmrvEVjF/nqj5kgT4kEq7VofrDoM1MxoRjEWkrCC3EtLi59TVawxTAn+orJwFQcrqEN1+g==",
-      "license": "BlueOak-1.0.0",
-      "engines": {
-        "node": ">=18"
-      }
-    },
     "node_modules/cli-progress": {
       "version": "3.12.0",
       "resolved": "https://registry.npmjs.org/cli-progress/-/cli-progress-3.12.0.tgz",
@@ -3524,6 +3597,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/ignore": {
+      "version": "7.0.5",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-7.0.5.tgz",
+      "integrity": "sha512-Hs59xBNfUIunMFgWAbGX5cq6893IbWg4KnrjbYwX3tx0ztorVgTDA6B2sxf8ejHJ4wz8BqGUMYlnzNBer5NvGg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 4"
+      }
+    },
     "node_modules/inherits": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
@@ -3833,18 +3915,6 @@
         "node": ">=16 || 14 >=14.17"
       }
     },
-    "node_modules/minizlib": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-3.1.0.tgz",
-      "integrity": "sha512-KZxYo1BUkWD2TVFLr0MQoM8vUUigWD3LlD83a/75BqC+4qE0Hb1Vo5v1FgcfaNXvfXzr+5EhQ6ing/CaBijTlw==",
-      "license": "MIT",
-      "dependencies": {
-        "minipass": "^7.1.2"
-      },
-      "engines": {
-        "node": ">= 18"
-      }
-    },
     "node_modules/mnemonist": {
       "version": "0.39.8",
       "resolved": "https://registry.npmjs.org/mnemonist/-/mnemonist-0.39.8.tgz",
@@ -4817,22 +4887,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/tar": {
-      "version": "7.5.11",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-7.5.11.tgz",
-      "integrity": "sha512-ChjMH33/KetonMTAtpYdgUFr0tbz69Fp2v7zWxQfYZX4g5ZN2nOBXm1R2xyA+lMIKrLKIoKAwFj93jE/avX9cQ==",
-      "license": "BlueOak-1.0.0",
-      "dependencies": {
-        "@isaacs/fs-minipass": "^4.0.0",
-        "chownr": "^3.0.0",
-        "minipass": "^7.1.2",
-        "minizlib": "^3.1.0",
-        "yallist": "^5.0.0"
-      },
-      "engines": {
-        "node": ">=18"
-      }
-    },
     "node_modules/tinybench": {
       "version": "2.9.0",
       "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
@@ -5699,15 +5753,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/yallist": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz",
-      "integrity": "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw==",
-      "license": "BlueOak-1.0.0",
-      "engines": {
-        "node": ">=18"
-      }
-    },
     "node_modules/yargs": {
       "version": "17.7.2",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
diff --git a/gitnexus/package.json b/gitnexus/package.json
index e143a3a15..fb29ad17e 100644
--- a/gitnexus/package.json
+++ b/gitnexus/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gitnexus",
-  "version": "1.4.0",
+  "version": "1.4.7",
   "description": "Graph-powered code intelligence for AI agents. Index any codebase, query via MCP or CLI.",
   "author": "Abhigyan Patwari",
   "license": "PolyForm-Noncommercial-1.0.0",
@@ -20,6 +20,7 @@
     "knowledge-graph",
     "cursor",
     "claude",
+    "codex",
     "ai-agent",
     "gitnexus",
     "static-analysis",
@@ -39,13 +40,14 @@
   "scripts": {
     "build": "tsc",
     "dev": "tsx watch src/cli/index.ts",
-    "test": "vitest run test/unit",
+    "test": "vitest run",
+    "test:unit": "vitest run test/unit",
     "test:integration": "vitest run test/integration",
-    "test:all": "vitest run",
     "test:watch": "vitest",
     "test:coverage": "vitest run --coverage",
     "prepare": "npm run build",
-    "postinstall": "node scripts/patch-tree-sitter-swift.cjs"
+    "postinstall": "node scripts/patch-tree-sitter-swift.cjs",
+    "prepack": "npm run build && chmod +x dist/cli/index.js"
   },
   "dependencies": {
     "@huggingface/transformers": "^3.0.0",
@@ -59,7 +61,8 @@
     "graphology": "^0.25.4",
     "graphology-indices": "^0.17.0",
     "graphology-utils": "^2.3.0",
-    "@ladybugdb/core": "^0.15.1",
+    "@ladybugdb/core": "^0.15.2",
+    "ignore": "^7.0.5",
     "lru-cache": "^11.0.0",
     "mnemonist": "^0.39.0",
     "pandemonium": "^2.4.0",
@@ -92,6 +95,11 @@
     "typescript": "^5.4.5",
     "vitest": "^4.0.18"
   },
+  "overrides": {
+    "@huggingface/transformers": {
+      "onnxruntime-node": "$onnxruntime-node"
+    }
+  },
   "engines": {
     "node": ">=18.0.0"
   }
diff --git a/gitnexus/scripts/patch-tree-sitter-swift.cjs b/gitnexus/scripts/patch-tree-sitter-swift.cjs
old mode 100644
new mode 100755
diff --git a/gitnexus/src/cli/ai-context.ts b/gitnexus/src/cli/ai-context.ts
index ca382ce6d..2ef720aa3 100644
--- a/gitnexus/src/cli/ai-context.ts
+++ b/gitnexus/src/cli/ai-context.ts
@@ -2,7 +2,7 @@
  * AI Context Generator
  * 
  * Creates AGENTS.md and CLAUDE.md with full inline GitNexus context.
- * AGENTS.md is the standard read by Cursor, Windsurf, OpenCode, Cline, etc.
+ * AGENTS.md is the standard read by Cursor, Windsurf, OpenCode, Codex, Cline, etc.
  * CLAUDE.md is for Claude Code which only reads that file.
  */
 
@@ -308,4 +308,3 @@ export async function generateAIContextFiles(
 
   return { files: createdFiles };
 }
-
diff --git a/gitnexus/src/cli/analyze.ts b/gitnexus/src/cli/analyze.ts
index eaea39bed..4965563ea 100644
--- a/gitnexus/src/cli/analyze.ts
+++ b/gitnexus/src/cli/analyze.ts
@@ -117,6 +117,10 @@ export const analyzeCommand = async (
     return;
   }
 
+  if (process.env.GITNEXUS_NO_GITIGNORE) {
+    console.log('  GITNEXUS_NO_GITIGNORE is set — skipping .gitignore (still reading .gitnexusignore)\n');
+  }
+
   // Single progress bar for entire pipeline
   const bar = new cliProgress.SingleBar({
     format: '  {bar} {percentage}% | {phase}',
diff --git a/gitnexus/src/cli/eval-server.ts b/gitnexus/src/cli/eval-server.ts
index 35a35406c..35827eb91 100644
--- a/gitnexus/src/cli/eval-server.ts
+++ b/gitnexus/src/cli/eval-server.ts
@@ -25,6 +25,7 @@
  */
 
 import http from 'http';
+import { writeSync } from 'node:fs';
 import { LocalBackend } from '../mcp/local/local-backend.js';
 
 export interface EvalServerOptions {
@@ -142,7 +143,10 @@ export function formatContextResult(result: any): string {
 }
 
 export function formatImpactResult(result: any): string {
-  if (result.error) return `Error: ${result.error}`;
+  if (result.error) {
+    const suggestion = result.suggestion ? `\nSuggestion: ${result.suggestion}` : '';
+    return `Error: ${result.error}${suggestion}`;
+  }
 
   const target = result.target;
   const direction = result.direction;
@@ -155,7 +159,11 @@ export function formatImpactResult(result: any): string {
 
   const lines: string[] = [];
   const dirLabel = direction === 'upstream' ? 'depends on this (will break if changed)' : 'this depends on';
-  lines.push(`Blast radius for ${target?.kind || ''} ${target?.name} (${direction}): ${total} symbol(s) ${dirLabel}\n`);
+  lines.push(`Blast radius for ${target?.kind || ''} ${target?.name} (${direction}): ${total} symbol(s) ${dirLabel}`);
+  if (result.partial) {
+    lines.push('⚠️  Partial results — graph traversal was interrupted. Deeper impacts may exist.');
+  }
+  lines.push('');
 
   const depthLabels: Record<number, string> = {
     1: 'WILL BREAK (direct)',
@@ -401,9 +409,10 @@ export async function evalServerCommand(options?: EvalServerOptions): Promise<vo
       console.error(`  Auto-shutdown after ${idleTimeoutSec}s idle`);
     }
     try {
-      process.stdout.write(`GITNEXUS_EVAL_SERVER_READY:${port}\n`);
+      // Use fd 1 directly — LadybugDB captures process.stdout (#324)
+      writeSync(1, `GITNEXUS_EVAL_SERVER_READY:${port}\n`);
     } catch {
-      // stdout may not be available
+      // stdout may not be available (e.g., broken pipe)
     }
   });
 
diff --git a/gitnexus/src/cli/index.ts b/gitnexus/src/cli/index.ts
index 4d74ce24b..6f5164f5c 100644
--- a/gitnexus/src/cli/index.ts
+++ b/gitnexus/src/cli/index.ts
@@ -18,9 +18,10 @@ program
 
 program
   .command('setup')
-  .description('One-time setup: configure MCP for Cursor, Claude Code, OpenCode')
+  .description('One-time setup: configure MCP for Cursor, Claude Code, OpenCode, Codex')
   .action(createLazyAction(() => import('./setup.js'), 'setupCommand'));
 
+
 program
   .command('analyze [path]')
   .description('Index a repository (full analysis)')
@@ -28,6 +29,7 @@ program
   .option('--embeddings', 'Enable embedding generation for semantic search (off by default)')
   .option('--skills', 'Generate repo-specific skill files from detected communities')
    .option('-v, --verbose', 'Enable verbose ingestion warnings (default: false)')
+   .addHelpText('after', '\nEnvironment variables:\n  GITNEXUS_NO_GITIGNORE=1  Skip .gitignore parsing (still reads .gitnexusignore)')
    .action(createLazyAction(() => import('./analyze.js'), 'analyzeCommand'));
 
 program
diff --git a/gitnexus/src/cli/setup.ts b/gitnexus/src/cli/setup.ts
index e8df28737..eb8149f07 100644
--- a/gitnexus/src/cli/setup.ts
+++ b/gitnexus/src/cli/setup.ts
@@ -9,12 +9,15 @@
 import fs from 'fs/promises';
 import path from 'path';
 import os from 'os';
+import { execFile } from 'child_process';
+import { promisify } from 'util';
 import { fileURLToPath } from 'url';
 import { glob } from 'glob';
 import { getGlobalDir } from '../storage/repo-manager.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
+const execFileAsync = promisify(execFile);
 
 interface SetupResult {
   configured: string[];
@@ -239,12 +242,75 @@ async function setupOpenCode(result: SetupResult): Promise<void> {
   }
 }
 
+/**
+ * Build a TOML section for Codex MCP config (~/.codex/config.toml).
+ */
+function getCodexMcpTomlSection(): string {
+  const entry = getMcpEntry();
+  const command = JSON.stringify(entry.command);
+  const args = `[${entry.args.map(arg => JSON.stringify(arg)).join(', ')}]`;
+  return `[mcp_servers.gitnexus]\ncommand = ${command}\nargs = ${args}\n`;
+}
+
+/**
+ * Append GitNexus MCP server config to Codex's config.toml if missing.
+ */
+async function upsertCodexConfigToml(configPath: string): Promise<void> {
+  let existing = '';
+  try {
+    existing = await fs.readFile(configPath, 'utf-8');
+  } catch {
+    existing = '';
+  }
+
+  if (existing.includes('[mcp_servers.gitnexus]')) {
+    return;
+  }
+
+  const section = getCodexMcpTomlSection();
+  const nextContent = existing.trim().length > 0
+    ? `${existing.trimEnd()}\n\n${section}`
+    : section;
+
+  await fs.mkdir(path.dirname(configPath), { recursive: true });
+  await fs.writeFile(configPath, `${nextContent.trimEnd()}\n`, 'utf-8');
+}
+
+async function setupCodex(result: SetupResult): Promise<void> {
+  const codexDir = path.join(os.homedir(), '.codex');
+  if (!(await dirExists(codexDir))) {
+    result.skipped.push('Codex (not installed)');
+    return;
+  }
+
+  try {
+    const entry = getMcpEntry();
+    await execFileAsync(
+      'codex',
+      ['mcp', 'add', 'gitnexus', '--', entry.command, ...entry.args],
+      { shell: process.platform === 'win32' }
+    );
+    result.configured.push('Codex');
+    return;
+  } catch {
+    // Fallback for environments where `codex` binary isn't on PATH.
+  }
+
+  try {
+    const configPath = path.join(codexDir, 'config.toml');
+    await upsertCodexConfigToml(configPath);
+    result.configured.push('Codex (MCP added to ~/.codex/config.toml)');
+  } catch (err: any) {
+    result.errors.push(`Codex: ${err.message}`);
+  }
+}
+
 // ─── Skill Installation ───────────────────────────────────────────
 
 /**
  * Install GitNexus skills to a target directory.
  * Each skill is installed as {targetDir}/gitnexus-{skillName}/SKILL.md
- * following the Agent Skills standard (both Cursor and Claude Code).
+ * following the Agent Skills standard (Cursor, Claude Code, and Codex).
  *
  * Supports two source layouts:
  *   - Flat file:  skills/{name}.md           → copied as SKILL.md
@@ -353,6 +419,24 @@ async function installOpenCodeSkills(result: SetupResult): Promise<void> {
   }
 }
 
+/**
+ * Install global Codex skills to ~/.agents/skills/gitnexus/
+ */
+async function installCodexSkills(result: SetupResult): Promise<void> {
+  const codexDir = path.join(os.homedir(), '.codex');
+  if (!(await dirExists(codexDir))) return;
+
+  const skillsDir = path.join(os.homedir(), '.agents', 'skills');
+  try {
+    const installed = await installSkillsTo(skillsDir);
+    if (installed.length > 0) {
+      result.configured.push(`Codex skills (${installed.length} skills → ~/.agents/skills/)`);
+    }
+  } catch (err: any) {
+    result.errors.push(`Codex skills: ${err.message}`);
+  }
+}
+
 // ─── Main command ──────────────────────────────────────────────────
 
 export const setupCommand = async () => {
@@ -375,12 +459,14 @@ export const setupCommand = async () => {
   await setupCursor(result);
   await setupClaudeCode(result);
   await setupOpenCode(result);
+  await setupCodex(result);
   
   // Install global skills for platforms that support them
   await installClaudeCodeSkills(result);
   await installClaudeCodeHooks(result);
   await installCursorSkills(result);
   await installOpenCodeSkills(result);
+  await installCodexSkills(result);
 
   // Print results
   if (result.configured.length > 0) {
diff --git a/gitnexus/src/cli/tool.ts b/gitnexus/src/cli/tool.ts
index 2244d4797..16dde3047 100644
--- a/gitnexus/src/cli/tool.ts
+++ b/gitnexus/src/cli/tool.ts
@@ -10,10 +10,12 @@
  *   gitnexus impact --target "AuthService" --direction upstream
  *   gitnexus cypher "MATCH (n:Function) RETURN n.name LIMIT 10"
  * 
- * Note: Output goes to stderr because LadybugDB's native module captures stdout
- * at the OS level during init. This is consistent with augment.ts.
+ * Note: Output goes to stdout via fs.writeSync(fd 1), bypassing LadybugDB's
+ * native module which captures the Node.js process.stdout stream during init.
+ * See the output() function for details (#324).
  */
 
+import { writeSync } from 'node:fs';
 import { LocalBackend } from '../mcp/local/local-backend.js';
 
 let _backend: LocalBackend | null = null;
@@ -29,10 +31,29 @@ async function getBackend(): Promise<LocalBackend> {
   return _backend;
 }
 
+/**
+ * Write tool output to stdout using low-level fd write.
+ *
+ * LadybugDB's native module captures Node.js process.stdout during init,
+ * but the underlying OS file descriptor 1 (stdout) remains intact.
+ * By using fs.writeSync(1, ...) we bypass the Node.js stream layer
+ * and write directly to the real stdout fd (#324).
+ *
+ * Falls back to stderr if the fd write fails (e.g., broken pipe).
+ */
 function output(data: any): void {
   const text = typeof data === 'string' ? data : JSON.stringify(data, null, 2);
-  // stderr because LadybugDB captures stdout at OS level
-  process.stderr.write(text + '\n');
+  try {
+    writeSync(1, text + '\n');
+  } catch (err: any) {
+    if (err?.code === 'EPIPE') {
+      // Consumer closed the pipe (e.g., `gitnexus cypher ... | head -1`)
+      // Exit cleanly per Unix convention
+      process.exit(0);
+    }
+    // Fallback: stderr (previous behavior, works on all platforms)
+    process.stderr.write(text + '\n');
+  }
 }
 
 export async function queryCommand(queryText: string, options?: {
@@ -92,15 +113,27 @@ export async function impactCommand(target: string, options?: {
     process.exit(1);
   }
 
-  const backend = await getBackend();
-  const result = await backend.callTool('impact', {
-    target,
-    direction: options?.direction || 'upstream',
-    maxDepth: options?.depth ? parseInt(options.depth) : undefined,
-    includeTests: options?.includeTests ?? false,
-    repo: options?.repo,
-  });
-  output(result);
+  try {
+    const backend = await getBackend();
+    const result = await backend.callTool('impact', {
+      target,
+      direction: options?.direction || 'upstream',
+      maxDepth: options?.depth ? parseInt(options.depth, 10) : undefined,
+      includeTests: options?.includeTests ?? false,
+      repo: options?.repo,
+    });
+    output(result);
+  } catch (err: unknown) {
+    // Belt-and-suspenders: catch infrastructure failures (getBackend, callTool transport)
+    // The backend's impact() already returns structured errors for graph query failures
+    output({
+      error: (err instanceof Error ? err.message : String(err)) || 'Impact analysis failed unexpectedly',
+      target: { name: target },
+      direction: options?.direction || 'upstream',
+      suggestion: 'Try reducing --depth or using gitnexus context <symbol> as a fallback',
+    });
+    process.exit(1);
+  }
 }
 
 export async function cypherCommand(query: string, options?: {
diff --git a/gitnexus/src/config/ignore-service.ts b/gitnexus/src/config/ignore-service.ts
index affd83578..844564e02 100644
--- a/gitnexus/src/config/ignore-service.ts
+++ b/gitnexus/src/config/ignore-service.ts
@@ -1,3 +1,8 @@
+import ignore, { type Ignore } from 'ignore';
+import fs from 'fs/promises';
+import nodePath from 'path';
+import type { Path } from 'path-scurry';
+
 const DEFAULT_IGNORE_LIST = new Set([
     // Version Control
     '.git',
@@ -186,6 +191,10 @@ const IGNORED_FILES = new Set([
 
 
 
+// NOTE: Negation patterns in .gitnexusignore (e.g. `!vendor/`) cannot override
+// entries in DEFAULT_IGNORE_LIST — this is intentional. The hardcoded list protects
+// against indexing directories that are almost never source code (node_modules, .git, etc.).
+// Users who need to include such directories should remove them from the hardcoded list.
 export const shouldIgnorePath = (filePath: string): boolean => {
   const normalizedPath = filePath.replace(/\\/g, '/');
   const parts = normalizedPath.split('/');
@@ -237,3 +246,86 @@ export const shouldIgnorePath = (filePath: string): boolean => {
   return false;
 }
 
+/** Check if a directory name is in the hardcoded ignore list */
+export const isHardcodedIgnoredDirectory = (name: string): boolean => {
+  return DEFAULT_IGNORE_LIST.has(name);
+};
+
+/**
+ * Load .gitignore and .gitnexusignore rules from the repo root.
+ * Returns an `ignore` instance with all patterns, or null if no files found.
+ */
+export interface IgnoreOptions {
+  /** Skip .gitignore parsing, only read .gitnexusignore. Defaults to GITNEXUS_NO_GITIGNORE env var. */
+  noGitignore?: boolean;
+}
+
+export const loadIgnoreRules = async (
+  repoPath: string,
+  options?: IgnoreOptions
+): Promise<Ignore | null> => {
+  const ig = ignore();
+  let hasRules = false;
+
+  // Allow users to bypass .gitignore parsing (e.g. when .gitignore accidentally excludes source files)
+  const skipGitignore = options?.noGitignore ?? !!process.env.GITNEXUS_NO_GITIGNORE;
+  const filenames = skipGitignore
+    ? ['.gitnexusignore']
+    : ['.gitignore', '.gitnexusignore'];
+
+  for (const filename of filenames) {
+    try {
+      const content = await fs.readFile(nodePath.join(repoPath, filename), 'utf-8');
+      ig.add(content);
+      hasRules = true;
+    } catch (err: unknown) {
+      const code = (err as NodeJS.ErrnoException).code;
+      if (code !== 'ENOENT') {
+        console.warn(`  Warning: could not read ${filename}: ${(err as Error).message}`);
+      }
+    }
+  }
+
+  return hasRules ? ig : null;
+};
+
+/**
+ * Create a glob-compatible ignore filter combining:
+ * - .gitignore / .gitnexusignore patterns (via `ignore` package)
+ * - Hardcoded DEFAULT_IGNORE_LIST, IGNORED_EXTENSIONS, IGNORED_FILES
+ *
+ * Returns an IgnoreLike object for glob's `ignore` option,
+ * enabling directory-level pruning during traversal.
+ */
+export const createIgnoreFilter = async (repoPath: string, options?: IgnoreOptions) => {
+  const ig = await loadIgnoreRules(repoPath, options);
+
+  return {
+    ignored(p: Path): boolean {
+      // path-scurry's Path.relative() returns POSIX paths on all platforms,
+      // which is what the `ignore` package expects. No explicit normalization needed.
+      const rel = p.relative();
+      if (!rel) return false;
+      // Check .gitignore / .gitnexusignore patterns
+      if (ig && ig.ignores(rel)) return true;
+      // Fall back to hardcoded rules
+      return shouldIgnorePath(rel);
+    },
+    childrenIgnored(p: Path): boolean {
+      // Fast path: check directory name against hardcoded list.
+      // Note: dot-directories (.git, .vscode, etc.) are primarily excluded by
+      // glob's `dot: false` option in filesystem-walker.ts. This check is
+      // defense-in-depth — do not remove `dot: false` assuming this covers it.
+      if (DEFAULT_IGNORE_LIST.has(p.name)) return true;
+      // Check against .gitignore / .gitnexusignore patterns.
+      // Test both bare path and path with trailing slash to handle
+      // bare-name patterns (e.g. `local`) and dir-only patterns (e.g. `local/`).
+      if (ig) {
+        const rel = p.relative();
+        if (rel && (ig.ignores(rel) || ig.ignores(rel + '/'))) return true;
+      }
+      return false;
+    },
+  };
+};
+
diff --git a/gitnexus/src/config/supported-languages.ts b/gitnexus/src/config/supported-languages.ts
index 48562033a..b4346c6f0 100644
--- a/gitnexus/src/config/supported-languages.ts
+++ b/gitnexus/src/config/supported-languages.ts
@@ -1,3 +1,33 @@
+/**
+ * HOW TO ADD A NEW LANGUAGE:
+ *
+ * 1. Add the enum member below (e.g., Scala = 'scala')
+ * 2. Run `tsc --noEmit` — compiler errors guide you to every dispatch table
+ * 3. Use this checklist for each file:
+ *
+ *    FILE                              | WHAT TO ADD                              | DEFAULT (simple languages)
+ *    ----------------------------------|------------------------------------------|---------------------------
+ *    tree-sitter-queries.ts            | Query string + LANGUAGE_QUERIES entry    | (required)
+ *    export-detection.ts               | ExportChecker function + table entry     | (required)
+ *    import-resolution.ts              | Resolver in importResolvers              | resolveStandard(...)
+ *    import-resolution.ts              | namedBindingExtractors entry             | undefined
+ *    call-routing.ts                   | callRouters entry                        | noRouting
+ *    entry-point-scoring.ts            | ENTRY_POINT_PATTERNS entry               | []
+ *    framework-detection.ts            | AST_FRAMEWORK_PATTERNS entry             | []
+ *    type-extractors/<lang>.ts         | New file + index.ts import               | (required)
+ *    resolvers/<lang>.ts               | Resolver file (if non-standard)          | (only if resolveStandard insufficient)
+ *    named-binding-extraction.ts       | Extractor (if named imports)             | (only if language has named imports)
+ *
+ * 4. Also check these files for language-specific if-checks (no compile-time guard):
+ *    - mro-processor.ts (MRO strategy selection)
+ *    - heritage-processor.ts (extends/implements handling)
+ *    - parse-worker.ts (AST edge cases)
+ *    - parsing-processor.ts (node label normalization)
+ *
+ * 5. Add tree-sitter-<lang> to package.json dependencies
+ * 6. Add file extension mapping in utils.ts getLanguageFromFilename()
+ * 7. Run full test suite
+ */
 export enum SupportedLanguages {
     JavaScript = 'javascript',
     TypeScript = 'typescript',
diff --git a/gitnexus/src/core/embeddings/embedder.ts b/gitnexus/src/core/embeddings/embedder.ts
index 65ecd7a3f..99b7eddb6 100644
--- a/gitnexus/src/core/embeddings/embedder.ts
+++ b/gitnexus/src/core/embeddings/embedder.ts
@@ -22,17 +22,24 @@ import { createRequire } from 'module';
 import { DEFAULT_EMBEDDING_CONFIG, type EmbeddingConfig, type ModelProgress } from './types.js';
 
 /**
- * Check whether the onnxruntime-node package ships the CUDA execution provider.
- * Versions before 1.24.0 are CPU-only and do not include libonnxruntime_providers_cuda.so.
- * Attempting CUDA on those versions causes an uncatchable native crash.
+ * Check whether the onnxruntime-node package that @huggingface/transformers
+ * will actually load at runtime ships the CUDA execution provider.
+ *
+ * Critical: we resolve from transformers' own module scope, NOT from ours.
+ * npm may install two copies — a top-level 1.24.x (our dep) and a nested
+ * 1.21.0 (transformers' pinned dep). The guard must inspect whichever copy
+ * transformers.js will dlopen, otherwise the check is meaningless.
  */
 function hasOrtCudaProvider(): boolean {
   try {
     const require = createRequire(import.meta.url);
-    const ortPath = dirname(require.resolve('onnxruntime-node/package.json'));
-    // Check both napi-v6 (>=1.24) and napi-v3 (<=1.21) layouts
-    return existsSync(join(ortPath, 'bin', 'napi-v6', 'linux', 'x64', 'libonnxruntime_providers_cuda.so')) ||
-           existsSync(join(ortPath, 'bin', 'napi-v3', 'linux', 'x64', 'libonnxruntime_providers_cuda.so'));
+    // Resolve from @huggingface/transformers' scope so we find the same
+    // onnxruntime-node binary that transformers.js will use at runtime
+    const transformersDir = dirname(require.resolve('@huggingface/transformers/package.json'));
+    const ortRequire = createRequire(join(transformersDir, 'package.json'));
+    const ortPath = dirname(ortRequire.resolve('onnxruntime-node/package.json'));
+    const arch = process.arch; // x64, arm64, etc.
+    return existsSync(join(ortPath, 'bin', 'napi-v6', 'linux', arch, 'libonnxruntime_providers_cuda.so'));
   } catch {
     return false;
   }
diff --git a/gitnexus/src/core/graph/types.ts b/gitnexus/src/core/graph/types.ts
index aa9b24538..f3ddc0414 100644
--- a/gitnexus/src/core/graph/types.ts
+++ b/gitnexus/src/core/graph/types.ts
@@ -32,7 +32,8 @@ export type NodeLabel =
   | 'Delegate'
   | 'Annotation'
   | 'Constructor'
-  | 'Template';
+  | 'Template'
+  | 'Section';
 
 
 import { SupportedLanguages } from '../../config/supported-languages.js';
@@ -65,6 +66,8 @@ export type NodeProperties = {
   entryPointReason?: string,
   // Method signature (for MRO disambiguation)
   parameterCount?: number,
+  // Section-specific (markdown heading level, 1-6)
+  level?: number,
   returnType?: string,
 }
 
@@ -80,6 +83,8 @@ export type RelationshipType =
   | 'IMPLEMENTS'
   | 'EXTENDS'
   | 'HAS_METHOD'
+  | 'HAS_PROPERTY'
+  | 'ACCESSES'
   | 'MEMBER_OF'
   | 'STEP_IN_PROCESS'
 
@@ -96,7 +101,7 @@ export interface GraphRelationship {
   type: RelationshipType,
   /** Confidence score 0-1 (1.0 = certain, lower = uncertain resolution) */
   confidence: number,
-  /** Resolution reason: 'import-resolved', 'same-file', 'fuzzy-global', or empty for non-CALLS */
+  /** Semantics are edge-type-dependent: CALLS uses resolution tier, ACCESSES uses 'read'/'write', OVERRIDES uses MRO reason */
   reason: string,
   /** Step number for STEP_IN_PROCESS relationships (1-indexed) */
   step?: number,
diff --git a/gitnexus/src/core/ingestion/ast-helpers.ts b/gitnexus/src/core/ingestion/ast-helpers.ts
new file mode 100644
index 000000000..d93f43796
--- /dev/null
+++ b/gitnexus/src/core/ingestion/ast-helpers.ts
@@ -0,0 +1,710 @@
+import type Parser from 'tree-sitter';
+import { SupportedLanguages } from '../../config/supported-languages.js';
+import type { NodeLabel } from '../graph/types.js';
+import { generateId } from '../../lib/utils.js';
+import { extractSimpleTypeName } from './type-extractors/shared.js';
+
+/** Tree-sitter AST node. Re-exported for use across ingestion modules. */
+export type SyntaxNode = Parser.SyntaxNode;
+
+/**
+ * Ordered list of definition capture keys for tree-sitter query matches.
+ * Used to extract the definition node from a capture map.
+ */
+export const DEFINITION_CAPTURE_KEYS = [
+  'definition.function',
+  'definition.class',
+  'definition.interface',
+  'definition.method',
+  'definition.struct',
+  'definition.enum',
+  'definition.namespace',
+  'definition.module',
+  'definition.trait',
+  'definition.impl',
+  'definition.type',
+  'definition.const',
+  'definition.static',
+  'definition.typedef',
+  'definition.macro',
+  'definition.union',
+  'definition.property',
+  'definition.record',
+  'definition.delegate',
+  'definition.annotation',
+  'definition.constructor',
+  'definition.template',
+] as const;
+
+/** Extract the definition node from a tree-sitter query capture map. */
+export const getDefinitionNodeFromCaptures = (captureMap: Record<string, any>): SyntaxNode | null => {
+  for (const key of DEFINITION_CAPTURE_KEYS) {
+    if (captureMap[key]) return captureMap[key];
+  }
+  return null;
+};
+
+/**
+ * Node types that represent function/method definitions across languages.
+ * Used to find the enclosing function for a call site.
+ */
+export const FUNCTION_NODE_TYPES = new Set([
+  // TypeScript/JavaScript
+  'function_declaration',
+  'arrow_function',
+  'function_expression',
+  'method_definition',
+  'generator_function_declaration',
+  // Python
+  'function_definition',
+  // Common async variants
+  'async_function_declaration',
+  'async_arrow_function',
+  // Java
+  'method_declaration',
+  'constructor_declaration',
+  // C/C++
+  // 'function_definition' already included above
+  // Go
+  // 'method_declaration' already included from Java
+  // C#
+  'local_function_statement',
+  // Rust
+  'function_item',
+  'impl_item', // Methods inside impl blocks
+  // PHP
+  'anonymous_function',
+  // Kotlin
+  'lambda_literal',
+  // Swift
+  'init_declaration',
+  'deinit_declaration',
+  // Ruby
+  'method',           // def foo
+  'singleton_method', // def self.foo
+]);
+
+/**
+ * Node types for standard function declarations that need C/C++ declarator handling.
+ * Used by extractFunctionName to determine how to extract the function name.
+ */
+export const FUNCTION_DECLARATION_TYPES = new Set([
+  'function_declaration',
+  'function_definition',
+  'async_function_declaration',
+  'generator_function_declaration',
+  'function_item',
+]);
+
+/** AST node types that represent a class-like container (for HAS_METHOD edge extraction) */
+export const CLASS_CONTAINER_TYPES = new Set([
+  'class_declaration', 'abstract_class_declaration',
+  'interface_declaration', 'struct_declaration', 'record_declaration',
+  'class_specifier', 'struct_specifier',
+  'impl_item', 'trait_item', 'struct_item', 'enum_item',
+  'class_definition',
+  'trait_declaration',
+  'protocol_declaration',
+  // Ruby
+  'class',
+  'module',
+  // Kotlin
+  'object_declaration',
+  'companion_object',
+]);
+
+export const CONTAINER_TYPE_TO_LABEL: Record<string, string> = {
+  class_declaration: 'Class',
+  abstract_class_declaration: 'Class',
+  interface_declaration: 'Interface',
+  struct_declaration: 'Struct',
+  struct_specifier: 'Struct',
+  class_specifier: 'Class',
+  class_definition: 'Class',
+  impl_item: 'Impl',
+  trait_item: 'Trait',
+  struct_item: 'Struct',
+  enum_item: 'Enum',
+  trait_declaration: 'Trait',
+  record_declaration: 'Record',
+  protocol_declaration: 'Interface',
+  class: 'Class',
+  module: 'Module',
+  object_declaration: 'Class',
+  companion_object: 'Class',
+};
+
+/** Check if a Kotlin function_declaration capture is inside a class_body (i.e., a method).
+ *  Kotlin grammar uses function_declaration for both top-level functions and class methods.
+ *  Returns true when the captured definition node has a class_body ancestor. */
+export function isKotlinClassMethod(captureNode: { parent?: any } | null | undefined): boolean {
+  let ancestor = captureNode?.parent;
+  while (ancestor) {
+    if (ancestor.type === 'class_body') return true;
+    ancestor = ancestor.parent;
+  }
+  return false;
+}
+
+/**
+ * C/C++: check if a Function capture is inside a class/struct body.
+ * If true, the function is already captured by @definition.method and should be skipped
+ * to prevent double-indexing in globalIndex.
+ */
+export function isCppDuplicateClassFunction(
+  functionNode: { parent?: any } | null | undefined,
+  nodeLabel: string,
+  language: SupportedLanguages,
+): boolean {
+  if (nodeLabel !== 'Function') return false;
+  if (language !== SupportedLanguages.CPlusPlus && language !== SupportedLanguages.C) return false;
+  let ancestor = functionNode?.parent;
+  while (ancestor) {
+    if (ancestor.type === 'class_specifier' || ancestor.type === 'struct_specifier') return true;
+    ancestor = ancestor.parent;
+  }
+  return false;
+}
+
+/**
+ * Determine the graph node label from a tree-sitter capture map.
+ * Handles language-specific reclassification (C/C++ duplicate skipping, Kotlin Method promotion).
+ * Returns null if the capture should be skipped (import, call, C/C++ duplicate, missing name).
+ */
+export function getLabelFromCaptures(
+  captureMap: Record<string, any>,
+  language: SupportedLanguages,
+): NodeLabel | null {
+  if (captureMap['import'] || captureMap['call']) return null;
+  if (!captureMap['name'] && !captureMap['definition.constructor']) return null;
+
+  if (captureMap['definition.function']) {
+    if (isCppDuplicateClassFunction(captureMap['definition.function'], 'Function', language)) return null;
+    if (language === SupportedLanguages.Kotlin && isKotlinClassMethod(captureMap['definition.function'])) return 'Method';
+    return 'Function';
+  }
+  if (captureMap['definition.class']) return 'Class';
+  if (captureMap['definition.interface']) return 'Interface';
+  if (captureMap['definition.method']) return 'Method';
+  if (captureMap['definition.struct']) return 'Struct';
+  if (captureMap['definition.enum']) return 'Enum';
+  if (captureMap['definition.namespace']) return 'Namespace';
+  if (captureMap['definition.module']) return 'Module';
+  if (captureMap['definition.trait']) return 'Trait';
+  if (captureMap['definition.impl']) return 'Impl';
+  if (captureMap['definition.type']) return 'TypeAlias';
+  if (captureMap['definition.const']) return 'Const';
+  if (captureMap['definition.static']) return 'Static';
+  if (captureMap['definition.typedef']) return 'Typedef';
+  if (captureMap['definition.macro']) return 'Macro';
+  if (captureMap['definition.union']) return 'Union';
+  if (captureMap['definition.property']) return 'Property';
+  if (captureMap['definition.record']) return 'Record';
+  if (captureMap['definition.delegate']) return 'Delegate';
+  if (captureMap['definition.annotation']) return 'Annotation';
+  if (captureMap['definition.constructor']) return 'Constructor';
+  if (captureMap['definition.template']) return 'Template';
+  return 'CodeElement';
+}
+
+/** Walk up AST to find enclosing class/struct/interface/impl, return its generateId or null.
+ *  For Go method_declaration nodes, extracts receiver type (e.g. `func (u *User) Save()` → User struct). */
+export const findEnclosingClassId = (node: any, filePath: string): string | null => {
+  let current = node.parent;
+  while (current) {
+    // Go: method_declaration has a receiver parameter with the struct type
+    if (current.type === 'method_declaration') {
+      const receiver = current.childForFieldName?.('receiver');
+      if (receiver) {
+        // receiver is a parameter_list: (u *User) or (u User)
+        const paramDecl = receiver.namedChildren?.find?.((c: any) => c.type === 'parameter_declaration');
+        if (paramDecl) {
+          const typeNode = paramDecl.childForFieldName?.('type');
+          if (typeNode) {
+            // Unwrap pointer_type (*User → User)
+            const inner = typeNode.type === 'pointer_type' ? typeNode.firstNamedChild : typeNode;
+            if (inner && (inner.type === 'type_identifier' || inner.type === 'identifier')) {
+              return generateId('Struct', `${filePath}:${inner.text}`);
+            }
+          }
+        }
+      }
+    }
+    // Go: type_declaration wrapping a struct_type (type User struct { ... })
+    // field_declaration → field_declaration_list → struct_type → type_spec → type_declaration
+    if (current.type === 'type_declaration') {
+      const typeSpec = current.children?.find((c: any) => c.type === 'type_spec');
+      if (typeSpec) {
+        const typeBody = typeSpec.childForFieldName?.('type');
+        if (typeBody?.type === 'struct_type' || typeBody?.type === 'interface_type') {
+          const nameNode = typeSpec.childForFieldName?.('name');
+          if (nameNode) {
+            const label = typeBody.type === 'struct_type' ? 'Struct' : 'Interface';
+            return generateId(label, `${filePath}:${nameNode.text}`);
+          }
+        }
+      }
+    }
+    if (CLASS_CONTAINER_TYPES.has(current.type)) {
+      // Rust impl_item: for `impl Trait for Struct {}`, pick the type after `for`
+      if (current.type === 'impl_item') {
+        const children = current.children ?? [];
+        const forIdx = children.findIndex((c: any) => c.text === 'for');
+        if (forIdx !== -1) {
+          const nameNode = children.slice(forIdx + 1).find((c: any) =>
+            c.type === 'type_identifier' || c.type === 'identifier'
+          );
+          if (nameNode) {
+            return generateId('Impl', `${filePath}:${nameNode.text}`);
+          }
+        }
+        // Fall through: plain `impl Struct {}` — use first type_identifier below
+      }
+      const nameNode = current.childForFieldName?.('name')
+        ?? current.children?.find((c: any) =>
+          c.type === 'type_identifier' || c.type === 'identifier' || c.type === 'name' || c.type === 'constant'
+        );
+      if (nameNode) {
+        const label = CONTAINER_TYPE_TO_LABEL[current.type] || 'Class';
+        return generateId(label, `${filePath}:${nameNode.text}`);
+      }
+    }
+    current = current.parent;
+  }
+  return null;
+};
+
+/**
+ * Find a child of `childType` within a sibling node of `siblingType`.
+ * Used for Kotlin AST traversal where visibility_modifier lives inside a modifiers sibling.
+ */
+export const findSiblingChild = (parent: any, siblingType: string, childType: string): any | null => {
+  for (let i = 0; i < parent.childCount; i++) {
+    const sibling = parent.child(i);
+    if (sibling?.type === siblingType) {
+      for (let j = 0; j < sibling.childCount; j++) {
+        const child = sibling.child(j);
+        if (child?.type === childType) return child;
+      }
+    }
+  }
+  return null;
+};
+
+/**
+ * Extract function name and label from a function_definition or similar AST node.
+ * Handles C/C++ qualified_identifier (ClassName::MethodName) and other language patterns.
+ */
+export const extractFunctionName = (node: SyntaxNode): { funcName: string | null; label: string } => {
+  let funcName: string | null = null;
+  let label = 'Function';
+
+  // Swift init/deinit
+  if (node.type === 'init_declaration' || node.type === 'deinit_declaration') {
+    return {
+      funcName: node.type === 'init_declaration' ? 'init' : 'deinit',
+      label: 'Constructor',
+    };
+  }
+
+  if (FUNCTION_DECLARATION_TYPES.has(node.type)) {
+    // C/C++: function_definition -> [pointer_declarator ->] function_declarator -> qualified_identifier/identifier
+    // Unwrap pointer_declarator / reference_declarator wrappers to reach function_declarator
+    let declarator = node.childForFieldName?.('declarator');
+    if (!declarator) {
+      for (let i = 0; i < node.childCount; i++) {
+        const c = node.child(i);
+        if (c?.type === 'function_declarator') { declarator = c; break; }
+      }
+    }
+    while (declarator && (declarator.type === 'pointer_declarator' || declarator.type === 'reference_declarator')) {
+      let nextDeclarator = declarator.childForFieldName?.('declarator');
+      if (!nextDeclarator) {
+        for (let i = 0; i < declarator.childCount; i++) {
+          const c = declarator.child(i);
+          if (c?.type === 'function_declarator' || c?.type === 'pointer_declarator' || c?.type === 'reference_declarator') { nextDeclarator = c; break; }
+        }
+      }
+      declarator = nextDeclarator;
+    }
+    if (declarator) {
+      let innerDeclarator = declarator.childForFieldName?.('declarator');
+      if (!innerDeclarator) {
+        for (let i = 0; i < declarator.childCount; i++) {
+          const c = declarator.child(i);
+          if (c?.type === 'qualified_identifier' || c?.type === 'identifier'
+            || c?.type === 'field_identifier' || c?.type === 'parenthesized_declarator') { innerDeclarator = c; break; }
+        }
+      }
+
+      if (innerDeclarator?.type === 'qualified_identifier') {
+        let nameNode = innerDeclarator.childForFieldName?.('name');
+        if (!nameNode) {
+          for (let i = 0; i < innerDeclarator.childCount; i++) {
+            const c = innerDeclarator.child(i);
+            if (c?.type === 'identifier') { nameNode = c; break; }
+          }
+        }
+        if (nameNode?.text) {
+          funcName = nameNode.text;
+          label = 'Method';
+        }
+      } else if (innerDeclarator?.type === 'identifier' || innerDeclarator?.type === 'field_identifier') {
+        // field_identifier is used for method names inside C++ class bodies
+        funcName = innerDeclarator.text;
+        if (innerDeclarator.type === 'field_identifier') label = 'Method';
+      } else if (innerDeclarator?.type === 'parenthesized_declarator') {
+        let nestedId: SyntaxNode | null = null;
+        for (let i = 0; i < innerDeclarator.childCount; i++) {
+          const c = innerDeclarator.child(i);
+          if (c?.type === 'qualified_identifier' || c?.type === 'identifier') { nestedId = c; break; }
+        }
+        if (nestedId?.type === 'qualified_identifier') {
+          let nameNode = nestedId.childForFieldName?.('name');
+          if (!nameNode) {
+            for (let i = 0; i < nestedId.childCount; i++) {
+              const c = nestedId.child(i);
+              if (c?.type === 'identifier') { nameNode = c; break; }
+            }
+          }
+          if (nameNode?.text) {
+            funcName = nameNode.text;
+            label = 'Method';
+          }
+        } else if (nestedId?.type === 'identifier') {
+          funcName = nestedId.text;
+        }
+      }
+    }
+
+    // Fallback for other languages (Kotlin uses simple_identifier, Swift uses simple_identifier)
+    if (!funcName) {
+      let nameNode = node.childForFieldName?.('name');
+      if (!nameNode) {
+        for (let i = 0; i < node.childCount; i++) {
+          const c = node.child(i);
+          if (c?.type === 'identifier' || c?.type === 'property_identifier' || c?.type === 'simple_identifier') { nameNode = c; break; }
+        }
+      }
+      funcName = nameNode?.text;
+
+      // Kotlin: function_declaration inside a class_body is a method, not a top-level function.
+      // Must match the label assigned in parse-worker.ts for consistent generateId() output.
+      if (funcName && node.type === 'function_declaration' && isKotlinClassMethod(node)) {
+        label = 'Method';
+      }
+    }
+  } else if (node.type === 'impl_item') {
+    let funcItem: SyntaxNode | null = null;
+    for (let i = 0; i < node.childCount; i++) {
+      const c = node.child(i);
+      if (c?.type === 'function_item') { funcItem = c; break; }
+    }
+    if (funcItem) {
+      let nameNode = funcItem.childForFieldName?.('name');
+      if (!nameNode) {
+        for (let i = 0; i < funcItem.childCount; i++) {
+          const c = funcItem.child(i);
+          if (c?.type === 'identifier') { nameNode = c; break; }
+        }
+      }
+      funcName = nameNode?.text;
+      label = 'Method';
+    }
+  } else if (node.type === 'method_definition') {
+    let nameNode = node.childForFieldName?.('name');
+    if (!nameNode) {
+      for (let i = 0; i < node.childCount; i++) {
+        const c = node.child(i);
+        if (c?.type === 'property_identifier') { nameNode = c; break; }
+      }
+    }
+    funcName = nameNode?.text;
+    label = 'Method';
+  } else if (node.type === 'method_declaration' || node.type === 'constructor_declaration') {
+    let nameNode = node.childForFieldName?.('name');
+    if (!nameNode) {
+      for (let i = 0; i < node.childCount; i++) {
+        const c = node.child(i);
+        if (c?.type === 'identifier') { nameNode = c; break; }
+      }
+    }
+    funcName = nameNode?.text;
+    label = 'Method';
+  } else if (node.type === 'arrow_function' || node.type === 'function_expression') {
+    const parent = node.parent;
+    if (parent?.type === 'variable_declarator') {
+      let nameNode = parent.childForFieldName?.('name');
+      if (!nameNode) {
+        for (let i = 0; i < parent.childCount; i++) {
+          const c = parent.child(i);
+          if (c?.type === 'identifier') { nameNode = c; break; }
+        }
+      }
+      funcName = nameNode?.text;
+    }
+  } else if (node.type === 'method' || node.type === 'singleton_method') {
+    let nameNode = node.childForFieldName?.('name');
+    if (!nameNode) {
+      for (let i = 0; i < node.childCount; i++) {
+        const c = node.child(i);
+        if (c?.type === 'identifier') { nameNode = c; break; }
+      }
+    }
+    funcName = nameNode?.text;
+    label = 'Method';
+  }
+
+  return { funcName, label };
+};
+
+export interface MethodSignature {
+  parameterCount: number | undefined;
+  /** Number of required (non-optional, non-default) parameters.
+   *  Only set when fewer than parameterCount — enables range-based arity filtering.
+   *  undefined means all parameters are required (or metadata unavailable). */
+  requiredParameterCount: number | undefined;
+  /** Per-parameter type names extracted via extractSimpleTypeName.
+   *  Only populated for languages with method overloading (Java, Kotlin, C#, C++).
+   *  undefined (not []) when no types are extractable — avoids empty array allocations. */
+  parameterTypes: string[] | undefined;
+  returnType: string | undefined;
+}
+
+/** Argument list node types shared between extractMethodSignature and countCallArguments. */
+export const CALL_ARGUMENT_LIST_TYPES = new Set([
+  'arguments',
+  'argument_list',
+  'value_arguments',
+]);
+
+/**
+ * Extract parameter count and return type text from an AST method/function node.
+ * Works across languages by looking for common AST patterns.
+ */
+export const extractMethodSignature = (node: SyntaxNode | null | undefined): MethodSignature => {
+  let parameterCount: number | undefined = 0;
+  let requiredCount = 0;
+  let returnType: string | undefined;
+  let isVariadic = false;
+  const paramTypes: string[] = [];
+
+  if (!node) return { parameterCount, requiredParameterCount: undefined, parameterTypes: undefined, returnType };
+
+  const paramListTypes = new Set([
+    'formal_parameters', 'parameters', 'parameter_list',
+    'function_parameters', 'method_parameters', 'function_value_parameters',
+  ]);
+
+  // Node types that indicate variadic/rest parameters
+  const VARIADIC_PARAM_TYPES = new Set([
+    'variadic_parameter_declaration',  // Go: ...string
+    'variadic_parameter',              // Rust: extern "C" fn(...)
+    'spread_parameter',                // Java: Object... args
+    'list_splat_pattern',              // Python: *args
+    'dictionary_splat_pattern',        // Python: **kwargs
+  ]);
+
+  /** AST node types that represent parameters with default values. */
+  const OPTIONAL_PARAM_TYPES = new Set([
+    'optional_parameter',                // TypeScript, Ruby: (x?: number), (x: number = 5), def f(x = 5)
+    'default_parameter',                 // Python: def f(x=5)
+    'typed_default_parameter',           // Python: def f(x: int = 5)
+    'optional_parameter_declaration',    // C++: void f(int x = 5)
+  ]);
+
+  /** Check if a parameter node has a default value (handles Kotlin, C#, Swift, PHP
+   *  where defaults are expressed as child nodes rather than distinct node types). */
+  const hasDefaultValue = (paramNode: SyntaxNode): boolean => {
+    if (OPTIONAL_PARAM_TYPES.has(paramNode.type)) return true;
+    // C#, Swift, PHP: check for '=' token or equals_value_clause child
+    for (let i = 0; i < paramNode.childCount; i++) {
+      const c = paramNode.child(i);
+      if (!c) continue;
+      if (c.type === '=' || c.type === 'equals_value_clause') return true;
+    }
+    // Kotlin: default values are siblings of the parameter node, not children.
+    // The AST is: parameter, =, <literal>  — all at function_value_parameters level.
+    // Check if the immediately following sibling is '=' (default value separator).
+    const sib = paramNode.nextSibling;
+    if (sib && sib.type === '=') return true;
+    return false;
+  };
+
+  const findParameterList = (current: SyntaxNode): SyntaxNode | null => {
+    for (const child of current.children) {
+      if (paramListTypes.has(child.type)) return child;
+    }
+    for (const child of current.children) {
+      const nested = findParameterList(child);
+      if (nested) return nested;
+    }
+    return null;
+  };
+
+  const parameterList = (
+    paramListTypes.has(node.type) ? node                // node itself IS the parameter list (e.g. C# primary constructors)
+      : node.childForFieldName?.('parameters')
+        ?? findParameterList(node)
+  );
+
+  if (parameterList && paramListTypes.has(parameterList.type)) {
+    for (const param of parameterList.namedChildren) {
+      if (param.type === 'comment') continue;
+      if (param.text === 'self' || param.text === '&self' || param.text === '&mut self' ||
+          param.type === 'self_parameter') {
+        continue;
+      }
+      // Kotlin: default values are siblings of the parameter node inside
+      // function_value_parameters, so they appear as named children (e.g.
+      // string_literal, integer_literal, boolean_literal, call_expression).
+      // Skip any named child that isn't a parameter-like or modifier node.
+      if (param.type.endsWith('_literal') || param.type === 'call_expression'
+        || param.type === 'navigation_expression' || param.type === 'prefix_expression'
+        || param.type === 'parenthesized_expression') {
+        continue;
+      }
+      // Check for variadic parameter types
+      if (VARIADIC_PARAM_TYPES.has(param.type)) {
+        isVariadic = true;
+        continue;
+      }
+      // TypeScript/JavaScript: rest parameter — required_parameter containing rest_pattern
+      if (param.type === 'required_parameter' || param.type === 'optional_parameter') {
+        for (const child of param.children) {
+          if (child.type === 'rest_pattern') {
+            isVariadic = true;
+            break;
+          }
+        }
+        if (isVariadic) continue;
+      }
+      // Kotlin: vararg modifier on a regular parameter
+      if (param.type === 'parameter' || param.type === 'formal_parameter') {
+        const prev = param.previousSibling;
+        if (prev?.type === 'parameter_modifiers' && prev.text.includes('vararg')) {
+          isVariadic = true;
+        }
+      }
+      // Extract parameter type name for overload disambiguation.
+      // Works for Java (formal_parameter), Kotlin (parameter), C# (parameter),
+      // C++ (parameter_declaration). Uses childForFieldName('type') which is the
+      // standard tree-sitter field for typed parameters across these languages.
+      // Kotlin uses positional children instead of 'type' field — fall back to
+      // searching for user_type/nullable_type/predefined_type children.
+      const paramTypeNode = param.childForFieldName('type');
+      if (paramTypeNode) {
+        const typeName = extractSimpleTypeName(paramTypeNode);
+        paramTypes.push(typeName ?? 'unknown');
+      } else {
+        // Kotlin: parameter → [simple_identifier, user_type|nullable_type]
+        let found = false;
+        for (const child of param.namedChildren) {
+          if (child.type === 'user_type' || child.type === 'nullable_type'
+            || child.type === 'type_identifier' || child.type === 'predefined_type') {
+            const typeName = extractSimpleTypeName(child);
+            paramTypes.push(typeName ?? 'unknown');
+            found = true;
+            break;
+          }
+        }
+        if (!found) paramTypes.push('unknown');
+      }
+      if (!hasDefaultValue(param)) requiredCount++;
+      parameterCount++;
+    }
+    // C/C++: bare `...` token in parameter list (not a named child — check all children)
+    if (!isVariadic) {
+      for (const child of parameterList.children) {
+        if (!child.isNamed && child.text === '...') {
+          isVariadic = true;
+          break;
+        }
+      }
+    }
+  }
+
+  // Return type extraction — language-specific field names
+  // Go: 'result' field is either a type_identifier or parameter_list (multi-return)
+  const goResult = node.childForFieldName?.('result');
+  if (goResult) {
+    if (goResult.type === 'parameter_list') {
+      // Multi-return: extract first parameter's type only (e.g. (*User, error) → *User)
+      const firstParam = goResult.firstNamedChild;
+      if (firstParam?.type === 'parameter_declaration') {
+        const typeNode = firstParam.childForFieldName('type');
+        if (typeNode) returnType = typeNode.text;
+      } else if (firstParam) {
+        // Unnamed return types: (string, error) — first child is a bare type node
+        returnType = firstParam.text;
+      }
+    } else {
+      returnType = goResult.text;
+    }
+  }
+
+  // Rust: 'return_type' field — the value IS the type node (e.g. primitive_type, type_identifier).
+  // Skip if the node is a type_annotation (TS/Python), which is handled by the generic loop below.
+  if (!returnType) {
+    const rustReturn = node.childForFieldName?.('return_type');
+    if (rustReturn && rustReturn.type !== 'type_annotation') {
+      returnType = rustReturn.text;
+    }
+  }
+
+  // C/C++: 'type' field on function_definition
+  if (!returnType) {
+    const cppType = node.childForFieldName?.('type');
+    if (cppType && cppType.text !== 'void') {
+      returnType = cppType.text;
+    }
+  }
+
+  // C#: 'returns' field on method_declaration
+  if (!returnType) {
+    const csReturn = node.childForFieldName?.('returns');
+    if (csReturn && csReturn.text !== 'void') {
+      returnType = csReturn.text;
+    }
+  }
+
+  // TS/Rust/Python/C#/Kotlin: type_annotation or return_type child
+  if (!returnType) {
+    for (const child of node.children) {
+      if (child.type === 'type_annotation' || child.type === 'return_type') {
+        const typeNode = child.children.find((c) => c.isNamed);
+        if (typeNode) returnType = typeNode.text;
+      }
+    }
+  }
+
+  // Kotlin: fun getUser(): User — return type is a bare user_type child of
+  // function_declaration. The Kotlin grammar does NOT wrap it in type_annotation
+  // or return_type; it appears as a direct child after function_value_parameters.
+  // Note: Kotlin uses function_value_parameters (not a field), so we find it by type.
+  if (!returnType) {
+    let paramsEnd = -1;
+    for (let i = 0; i < node.childCount; i++) {
+      const child = node.child(i);
+      if (!child) continue;
+      if (child.type === 'function_value_parameters' || child.type === 'value_parameters') {
+        paramsEnd = child.endIndex;
+      }
+      if (paramsEnd >= 0 && child.type === 'user_type' && child.startIndex > paramsEnd) {
+        returnType = child.text;
+        break;
+      }
+    }
+  }
+
+  if (isVariadic) parameterCount = undefined;
+
+  // Only include parameterTypes when at least one type was successfully extracted.
+  // Use undefined (not []) to avoid empty array allocations for untyped parameters.
+  const hasTypes = paramTypes.length > 0 && paramTypes.some(t => t !== 'unknown');
+  // Only set requiredParameterCount when it differs from total — saves memory on the common case.
+  const requiredParameterCount = (!isVariadic && requiredCount < (parameterCount ?? 0))
+    ? requiredCount : undefined;
+  return { parameterCount, requiredParameterCount, parameterTypes: hasTypes ? paramTypes : undefined, returnType };
+};
+
diff --git a/gitnexus/src/core/ingestion/call-analysis.ts b/gitnexus/src/core/ingestion/call-analysis.ts
new file mode 100644
index 000000000..0506098a9
--- /dev/null
+++ b/gitnexus/src/core/ingestion/call-analysis.ts
@@ -0,0 +1,539 @@
+import type { SyntaxNode } from './ast-helpers.js';
+import { CALL_ARGUMENT_LIST_TYPES } from './ast-helpers.js';
+
+/** Node types representing call expressions across supported languages. */
+export const CALL_EXPRESSION_TYPES = new Set([
+  'call_expression',                   // TS/JS/C/C++/Go/Rust
+  'method_invocation',                 // Java
+  'member_call_expression',            // PHP
+  'nullsafe_member_call_expression',   // PHP ?.
+  'call',                              // Python/Ruby
+  'invocation_expression',             // C#
+]);
+
+/**
+ * Hard limit on chain depth to prevent runaway recursion.
+ * For `a.b().c().d()`, the chain has depth 2 (b and c before d).
+ */
+export const MAX_CHAIN_DEPTH = 3;
+
+/**
+ * Count direct arguments for a call expression across common tree-sitter grammars.
+ * Returns undefined when the argument container cannot be located cheaply.
+ */
+export const countCallArguments = (callNode: SyntaxNode | null | undefined): number | undefined => {
+  if (!callNode) return undefined;
+
+  // Direct field or direct child (most languages)
+  let argsNode: SyntaxNode | null | undefined = callNode.childForFieldName('arguments')
+    ?? callNode.children.find((child) => CALL_ARGUMENT_LIST_TYPES.has(child.type));
+
+  // Kotlin/Swift: call_expression → call_suffix → value_arguments
+  // Search one level deeper for languages that wrap arguments in a suffix node
+  if (!argsNode) {
+    for (const child of callNode.children) {
+      if (!child.isNamed) continue;
+      const nested = child.children.find((gc) => CALL_ARGUMENT_LIST_TYPES.has(gc.type));
+      if (nested) { argsNode = nested; break; }
+    }
+  }
+
+  if (!argsNode) return undefined;
+
+  let count = 0;
+  for (const child of argsNode.children) {
+    if (!child.isNamed) continue;
+    if (child.type === 'comment') continue;
+    count++;
+  }
+
+  return count;
+};
+
+// ── Call-form discrimination (Phase 1, Step D) ─────────────────────────
+
+/**
+ * AST node types that indicate a member-access wrapper around the callee name.
+ * When nameNode.parent.type is one of these, the call is a member call.
+ */
+const MEMBER_ACCESS_NODE_TYPES = new Set([
+  'member_expression',           // TS/JS: obj.method()
+  'attribute',                   // Python: obj.method()
+  'member_access_expression',    // C#: obj.Method()
+  'field_expression',            // Rust/C++: obj.method() / ptr->method()
+  'selector_expression',         // Go: obj.Method()
+  'navigation_suffix',           // Kotlin/Swift: obj.method() — nameNode sits inside navigation_suffix
+  'member_binding_expression',   // C#: user?.Method() — null-conditional access
+]);
+
+/**
+ * Call node types that are inherently constructor invocations.
+ * Only includes patterns that the tree-sitter queries already capture as @call.
+ */
+const CONSTRUCTOR_CALL_NODE_TYPES = new Set([
+  'constructor_invocation',              // Kotlin: Foo()
+  'new_expression',                      // TS/JS/C++: new Foo()
+  'object_creation_expression',          // Java/C#/PHP: new Foo()
+  'implicit_object_creation_expression', // C# 9: User u = new(...)
+  'composite_literal',                   // Go: User{...}
+  'struct_expression',                   // Rust: User { ... }
+]);
+
+/**
+ * AST node types for scoped/qualified calls (e.g., Foo::new() in Rust, Foo::bar() in C++).
+ */
+const SCOPED_CALL_NODE_TYPES = new Set([
+  'scoped_identifier',           // Rust: Foo::new()
+  'qualified_identifier',        // C++: ns::func()
+]);
+
+type CallForm = 'free' | 'member' | 'constructor';
+
+/**
+ * Infer whether a captured call site is a free call, member call, or constructor.
+ * Returns undefined if the form cannot be determined.
+ *
+ * Works by inspecting the AST structure between callNode (@call) and nameNode (@call.name).
+ * No tree-sitter query changes needed — the distinction is in the node types.
+ */
+export const inferCallForm = (
+  callNode: SyntaxNode,
+  nameNode: SyntaxNode,
+): CallForm | undefined => {
+  // 1. Constructor: callNode itself is a constructor invocation (Kotlin)
+  if (CONSTRUCTOR_CALL_NODE_TYPES.has(callNode.type)) {
+    return 'constructor';
+  }
+
+  // 2. Member call: nameNode's parent is a member-access wrapper
+  const nameParent = nameNode.parent;
+  if (nameParent && MEMBER_ACCESS_NODE_TYPES.has(nameParent.type)) {
+    return 'member';
+  }
+
+  // 3. PHP: the callNode itself distinguishes member vs free calls
+  if (callNode.type === 'member_call_expression' || callNode.type === 'nullsafe_member_call_expression') {
+    return 'member';
+  }
+  if (callNode.type === 'scoped_call_expression') {
+    return 'member'; // static call Foo::bar()
+  }
+
+  // 4. Java method_invocation: member if it has an 'object' field
+  if (callNode.type === 'method_invocation' && callNode.childForFieldName('object')) {
+    return 'member';
+  }
+
+  // 4b. Ruby call with receiver: obj.method
+  if (callNode.type === 'call' && callNode.childForFieldName('receiver')) {
+    return 'member';
+  }
+
+  // 5. Scoped calls (Rust Foo::new(), C++ ns::func()): treat as free
+  //    The receiver is a type, not an instance — handled differently in Phase 3
+  if (nameParent && SCOPED_CALL_NODE_TYPES.has(nameParent.type)) {
+    return 'free';
+  }
+
+  // 6. Default: if nameNode is a direct child of callNode, it's a free call
+  if (nameNode.parent === callNode || nameParent?.parent === callNode) {
+    return 'free';
+  }
+
+  return undefined;
+};
+
+/**
+ * Extract the receiver identifier for member calls.
+ * Only captures simple identifiers — returns undefined for complex expressions
+ * like getUser().save() or arr[0].method().
+ */
+const SIMPLE_RECEIVER_TYPES = new Set([
+  'identifier',
+  'simple_identifier',
+  'variable_name',     // PHP $variable (tree-sitter-php)
+  'name',              // PHP name node
+  'this',              // TS/JS/Java/C# this.method()
+  'self',              // Rust/Python self.method()
+  'super',             // TS/JS/Java/Kotlin/Ruby super.method()
+  'super_expression',  // Kotlin wraps super in super_expression
+  'base',              // C# base.Method()
+  'parent',            // PHP parent::method()
+  'constant',          // Ruby CONSTANT.method() (uppercase identifiers)
+]);
+
+export const extractReceiverName = (
+  nameNode: SyntaxNode,
+): string | undefined => {
+  const parent = nameNode.parent;
+  if (!parent) return undefined;
+
+  // PHP: member_call_expression / nullsafe_member_call_expression — receiver is on the callNode
+  // Java: method_invocation — receiver is the 'object' field on callNode
+  // For these, parent of nameNode is the call itself, so check the call's object field
+  const callNode = parent.parent ?? parent;
+
+  let receiver: SyntaxNode | null = null;
+
+  // Try standard field names used across grammars
+  receiver = parent.childForFieldName('object')       // TS/JS member_expression, Python attribute, PHP, Java
+    ?? parent.childForFieldName('value')               // Rust field_expression
+    ?? parent.childForFieldName('operand')             // Go selector_expression
+    ?? parent.childForFieldName('expression')          // C# member_access_expression
+    ?? parent.childForFieldName('argument');            // C++ field_expression
+
+  // Java method_invocation: 'object' field is on the callNode, not on nameNode's parent
+  if (!receiver && callNode.type === 'method_invocation') {
+    receiver = callNode.childForFieldName('object');
+  }
+
+  // PHP: member_call_expression has 'object' on the call node
+  if (!receiver && (callNode.type === 'member_call_expression' || callNode.type === 'nullsafe_member_call_expression')) {
+    receiver = callNode.childForFieldName('object');
+  }
+
+  // Ruby: call node has 'receiver' field
+  if (!receiver && parent.type === 'call') {
+    receiver = parent.childForFieldName('receiver');
+  }
+
+  // PHP scoped_call_expression (parent::method(), self::method()):
+  // nameNode's direct parent IS the scoped_call_expression (name is a direct child)
+  if (!receiver && (parent.type === 'scoped_call_expression' || callNode.type === 'scoped_call_expression')) {
+    const scopedCall = parent.type === 'scoped_call_expression' ? parent : callNode;
+    receiver = scopedCall.childForFieldName('scope');
+    // relative_scope wraps 'parent'/'self'/'static' — unwrap to get the keyword
+    if (receiver?.type === 'relative_scope') {
+      receiver = receiver.firstChild;
+    }
+  }
+
+  // C# null-conditional: user?.Save() → conditional_access_expression wraps member_binding_expression
+  if (!receiver && parent.type === 'member_binding_expression') {
+    const condAccess = parent.parent;
+    if (condAccess?.type === 'conditional_access_expression') {
+      receiver = condAccess.firstNamedChild;
+    }
+  }
+
+  // Kotlin/Swift: navigation_expression target is the first child
+  if (!receiver && parent.type === 'navigation_suffix') {
+    const navExpr = parent.parent;
+    if (navExpr?.type === 'navigation_expression') {
+      // First named child is the target (receiver)
+      for (const child of navExpr.children) {
+        if (child.isNamed && child !== parent) {
+          receiver = child;
+          break;
+        }
+      }
+    }
+  }
+
+  if (!receiver) return undefined;
+
+  // Only capture simple identifiers — refuse complex expressions
+  if (SIMPLE_RECEIVER_TYPES.has(receiver.type)) {
+    return receiver.text;
+  }
+
+  // Python super().method(): receiver is a call node `super()` — extract the function name
+  if (receiver.type === 'call') {
+    const func = receiver.childForFieldName('function');
+    if (func?.text === 'super') return 'super';
+  }
+
+  return undefined;
+};
+
+/**
+ * Extract the raw receiver AST node for a member call.
+ * Unlike extractReceiverName, this returns the receiver node regardless of its type —
+ * including call_expression / method_invocation nodes that appear in chained calls
+ * like `svc.getUser().save()`.
+ *
+ * Returns undefined when the call is not a member call or when no receiver node
+ * can be found (e.g. top-level free calls).
+ */
+export const extractReceiverNode = (
+  nameNode: SyntaxNode,
+): SyntaxNode | undefined => {
+  const parent = nameNode.parent;
+  if (!parent) return undefined;
+
+  const callNode = parent.parent ?? parent;
+
+  let receiver: SyntaxNode | null = null;
+
+  receiver = parent.childForFieldName('object')
+    ?? parent.childForFieldName('value')
+    ?? parent.childForFieldName('operand')
+    ?? parent.childForFieldName('expression')
+    ?? parent.childForFieldName('argument');
+
+  if (!receiver && callNode.type === 'method_invocation') {
+    receiver = callNode.childForFieldName('object');
+  }
+
+  if (!receiver && (callNode.type === 'member_call_expression' || callNode.type === 'nullsafe_member_call_expression')) {
+    receiver = callNode.childForFieldName('object');
+  }
+
+  if (!receiver && parent.type === 'call') {
+    receiver = parent.childForFieldName('receiver');
+  }
+
+  if (!receiver && (parent.type === 'scoped_call_expression' || callNode.type === 'scoped_call_expression')) {
+    const scopedCall = parent.type === 'scoped_call_expression' ? parent : callNode;
+    receiver = scopedCall.childForFieldName('scope');
+    if (receiver?.type === 'relative_scope') {
+      receiver = receiver.firstChild;
+    }
+  }
+
+  if (!receiver && parent.type === 'member_binding_expression') {
+    const condAccess = parent.parent;
+    if (condAccess?.type === 'conditional_access_expression') {
+      receiver = condAccess.firstNamedChild;
+    }
+  }
+
+  if (!receiver && parent.type === 'navigation_suffix') {
+    const navExpr = parent.parent;
+    if (navExpr?.type === 'navigation_expression') {
+      for (const child of navExpr.children) {
+        if (child.isNamed && child !== parent) {
+          receiver = child;
+          break;
+        }
+      }
+    }
+  }
+
+  return receiver ?? undefined;
+};
+
+// ── Chained-call extraction ───────────────────────────────────────────────
+
+/** Node types representing member/field access across languages. */
+const FIELD_ACCESS_NODE_TYPES = new Set([
+  'member_expression',           // TS/JS
+  'member_access_expression',    // C#
+  'selector_expression',         // Go
+  'field_expression',            // Rust/C++
+  'field_access',                // Java
+  'attribute',                   // Python
+  'navigation_expression',       // Kotlin/Swift
+  'member_binding_expression',   // C# null-conditional (user?.Address)
+]);
+
+/** One step in a mixed receiver chain. */
+export type MixedChainStep = { kind: 'field' | 'call'; name: string };
+
+/**
+ * Walk a receiver AST node that is itself a call expression, accumulating the
+ * chain of intermediate method names up to MAX_CHAIN_DEPTH.
+ *
+ * For `svc.getUser().save()`, called with the receiver of `save` (getUser() call):
+ *   returns { chain: ['getUser'], baseReceiverName: 'svc' }
+ *
+ * For `a.b().c().d()`, called with the receiver of `d` (c() call):
+ *   returns { chain: ['b', 'c'], baseReceiverName: 'a' }
+ */
+export function extractCallChain(
+  receiverCallNode: SyntaxNode,
+): { chain: string[]; baseReceiverName: string | undefined } | undefined {
+  const chain: string[] = [];
+  let current: SyntaxNode = receiverCallNode;
+
+  while (CALL_EXPRESSION_TYPES.has(current.type) && chain.length < MAX_CHAIN_DEPTH) {
+    // Extract the method name from this call node.
+    const funcNode = current.childForFieldName?.('function')
+      ?? current.childForFieldName?.('name')
+      ?? current.childForFieldName?.('method');  // Ruby `call` node
+    let methodName: string | undefined;
+    let innerReceiver: SyntaxNode | null = null;
+    if (funcNode) {
+      // member_expression / attribute: last named child is the method identifier
+      methodName = funcNode.lastNamedChild?.text ?? funcNode.text;
+    }
+    // Kotlin/Swift: call_expression exposes callee as firstNamedChild, not a field.
+    // navigation_expression: method name is in navigation_suffix → simple_identifier.
+    if (!funcNode && current.type === 'call_expression') {
+      const callee = current.firstNamedChild;
+      if (callee?.type === 'navigation_expression') {
+        const suffix = callee.lastNamedChild;
+        if (suffix?.type === 'navigation_suffix') {
+          methodName = suffix.lastNamedChild?.text;
+          // The receiver is the part of navigation_expression before the suffix
+          for (let i = 0; i < callee.namedChildCount; i++) {
+            const child = callee.namedChild(i);
+            if (child && child.type !== 'navigation_suffix') {
+              innerReceiver = child;
+              break;
+            }
+          }
+        }
+      }
+    }
+    if (!methodName) break;
+    chain.unshift(methodName); // build chain outermost-last
+
+    // Walk into the receiver of this call to continue the chain
+    if (!innerReceiver && funcNode) {
+      innerReceiver = funcNode.childForFieldName?.('object')
+        ?? funcNode.childForFieldName?.('value')
+        ?? funcNode.childForFieldName?.('operand')
+        ?? funcNode.childForFieldName?.('expression');
+    }
+    // Java method_invocation: object field is on the call node
+    if (!innerReceiver && current.type === 'method_invocation') {
+      innerReceiver = current.childForFieldName?.('object');
+    }
+    // PHP member_call_expression
+    if (!innerReceiver && (current.type === 'member_call_expression' || current.type === 'nullsafe_member_call_expression')) {
+      innerReceiver = current.childForFieldName?.('object');
+    }
+    // Ruby `call` node: receiver field is on the call node itself
+    if (!innerReceiver && current.type === 'call') {
+      innerReceiver = current.childForFieldName?.('receiver');
+    }
+
+    if (!innerReceiver) break;
+
+    if (CALL_EXPRESSION_TYPES.has(innerReceiver.type)) {
+      current = innerReceiver; // continue walking
+    } else {
+      // Reached a simple identifier — the base receiver
+      return { chain, baseReceiverName: innerReceiver.text || undefined };
+    }
+  }
+
+  return chain.length > 0 ? { chain, baseReceiverName: undefined } : undefined;
+}
+
+/**
+ * Walk a receiver AST node that may interleave field accesses and method calls,
+ * building a unified chain of steps up to MAX_CHAIN_DEPTH.
+ *
+ * For `svc.getUser().address.save()`, called with the receiver of `save`
+ * (`svc.getUser().address`, a field access node):
+ *   returns { chain: [{ kind:'call', name:'getUser' }, { kind:'field', name:'address' }],
+ *             baseReceiverName: 'svc' }
+ *
+ * For `user.getAddress().city.getName()`, called with receiver of `getName`
+ * (`user.getAddress().city`):
+ *   returns { chain: [{ kind:'call', name:'getAddress' }, { kind:'field', name:'city' }],
+ *             baseReceiverName: 'user' }
+ *
+ * Pure field chains and pure call chains are special cases (all steps same kind).
+ */
+export function extractMixedChain(
+  receiverNode: SyntaxNode,
+): { chain: MixedChainStep[]; baseReceiverName: string | undefined } | undefined {
+  const chain: MixedChainStep[] = [];
+  let current: SyntaxNode = receiverNode;
+
+  while (chain.length < MAX_CHAIN_DEPTH) {
+    if (CALL_EXPRESSION_TYPES.has(current.type)) {
+      // ── Call expression: extract method name + inner receiver ────────────
+      const funcNode = current.childForFieldName?.('function')
+        ?? current.childForFieldName?.('name')
+        ?? current.childForFieldName?.('method');
+      let methodName: string | undefined;
+      let innerReceiver: SyntaxNode | null = null;
+
+      if (funcNode) {
+        methodName = funcNode.lastNamedChild?.text ?? funcNode.text;
+      }
+      // Kotlin/Swift: call_expression → navigation_expression
+      if (!funcNode && current.type === 'call_expression') {
+        const callee = current.firstNamedChild;
+        if (callee?.type === 'navigation_expression') {
+          const suffix = callee.lastNamedChild;
+          if (suffix?.type === 'navigation_suffix') {
+            methodName = suffix.lastNamedChild?.text;
+            for (let i = 0; i < callee.namedChildCount; i++) {
+              const child = callee.namedChild(i);
+              if (child && child.type !== 'navigation_suffix') { innerReceiver = child; break; }
+            }
+          }
+        }
+      }
+      if (!methodName) break;
+      chain.unshift({ kind: 'call', name: methodName });
+
+      if (!innerReceiver && funcNode) {
+        innerReceiver = funcNode.childForFieldName?.('object')
+          ?? funcNode.childForFieldName?.('value')
+          ?? funcNode.childForFieldName?.('operand')
+          ?? funcNode.childForFieldName?.('argument')    // C/C++ field_expression
+          ?? funcNode.childForFieldName?.('expression')
+          ?? null;
+      }
+      if (!innerReceiver && current.type === 'method_invocation') {
+        innerReceiver = current.childForFieldName?.('object') ?? null;
+      }
+      if (!innerReceiver && (current.type === 'member_call_expression' || current.type === 'nullsafe_member_call_expression')) {
+        innerReceiver = current.childForFieldName?.('object') ?? null;
+      }
+      if (!innerReceiver && current.type === 'call') {
+        innerReceiver = current.childForFieldName?.('receiver') ?? null;
+      }
+      if (!innerReceiver) break;
+
+      if (CALL_EXPRESSION_TYPES.has(innerReceiver.type) || FIELD_ACCESS_NODE_TYPES.has(innerReceiver.type)) {
+        current = innerReceiver;
+      } else {
+        return { chain, baseReceiverName: innerReceiver.text || undefined };
+      }
+    } else if (FIELD_ACCESS_NODE_TYPES.has(current.type)) {
+      // ── Field/member access: extract property name + inner object ─────────
+      let propertyName: string | undefined;
+      let innerObject: SyntaxNode | null = null;
+
+      if (current.type === 'navigation_expression') {
+        for (const child of current.children ?? []) {
+          if (child.type === 'navigation_suffix') {
+            for (const sc of child.children ?? []) {
+              if (sc.isNamed && sc.type !== '.') { propertyName = sc.text; break; }
+            }
+          } else if (child.isNamed && !innerObject) {
+            innerObject = child;
+          }
+        }
+      } else if (current.type === 'attribute') {
+        innerObject = current.childForFieldName?.('object') ?? null;
+        propertyName = current.childForFieldName?.('attribute')?.text;
+      } else {
+        innerObject = current.childForFieldName?.('object')
+          ?? current.childForFieldName?.('value')
+          ?? current.childForFieldName?.('operand')
+          ?? current.childForFieldName?.('argument')    // C/C++ field_expression
+          ?? current.childForFieldName?.('expression')
+          ?? null;
+        propertyName = (current.childForFieldName?.('property')
+          ?? current.childForFieldName?.('field')
+          ?? current.childForFieldName?.('name'))?.text;
+      }
+
+      if (!propertyName) break;
+      chain.unshift({ kind: 'field', name: propertyName });
+
+      if (!innerObject) break;
+
+      if (CALL_EXPRESSION_TYPES.has(innerObject.type) || FIELD_ACCESS_NODE_TYPES.has(innerObject.type)) {
+        current = innerObject;
+      } else {
+        return { chain, baseReceiverName: innerObject.text || undefined };
+      }
+    } else {
+      // Simple identifier — this is the base receiver
+      return chain.length > 0
+        ? { chain, baseReceiverName: current.text || undefined }
+        : undefined;
+    }
+  }
+
+  return chain.length > 0 ? { chain, baseReceiverName: undefined } : undefined;
+}
diff --git a/gitnexus/src/core/ingestion/call-processor.ts b/gitnexus/src/core/ingestion/call-processor.ts
index 1e3925163..ec095023d 100644
--- a/gitnexus/src/core/ingestion/call-processor.ts
+++ b/gitnexus/src/core/ingestion/call-processor.ts
@@ -1,6 +1,6 @@
 import { KnowledgeGraph } from '../graph/types.js';
 import { ASTCache } from './ast-cache.js';
-import type { SymbolDefinition } from './symbol-table.js';
+import type { SymbolDefinition, SymbolTable } from './symbol-table.js';
 import Parser from 'tree-sitter';
 import type { ResolutionContext } from './resolution-context.js';
 import { TIER_CONFIDENCE, type ResolutionTier } from './resolution-context.js';
@@ -17,20 +17,177 @@ import {
   countCallArguments,
   inferCallForm,
   extractReceiverName,
+  extractReceiverNode,
   findEnclosingClassId,
+  CALL_EXPRESSION_TYPES,
+  extractMixedChain,
+  type MixedChainStep,
 } from './utils.js';
-import { buildTypeEnv } from './type-env.js';
+import { buildTypeEnv, isSubclassOf } from './type-env.js';
 import type { ConstructorBinding } from './type-env.js';
 import { getTreeSitterBufferSize } from './constants.js';
-import type { ExtractedCall, ExtractedHeritage, ExtractedRoute, FileConstructorBindings } from './workers/parse-worker.js';
+import type { ExtractedCall, ExtractedAssignment, ExtractedHeritage, ExtractedRoute, FileConstructorBindings } from './workers/parse-worker.js';
 import { callRouters } from './call-routing.js';
+import { extractReturnTypeName, stripNullable } from './type-extractors/shared.js';
+import { typeConfigs } from './type-extractors/index.js';
+import type { LiteralTypeInferrer } from './type-extractors/types.js';
+import type { SyntaxNode } from './utils.js';
+
+/** Per-file resolved type bindings for exported symbols.
+ *  Populated during call processing, consumed by Phase 14 re-resolution pass. */
+export type ExportedTypeMap = Map<string, Map<string, string>>;
+
+const MAX_EXPORTS_PER_FILE = 500;
+const MAX_TYPE_NAME_LENGTH = 256;
+
+/** Build a map of imported callee names → return types for cross-file call-result binding.
+ *  Consulted ONLY when SymbolTable has no unambiguous local match (local-first principle). */
+export function buildImportedReturnTypes(
+  filePath: string,
+  namedImportMap: ReadonlyMap<string, ReadonlyMap<string, { sourcePath: string; exportedName: string }>>,
+  symbolTable: { lookupExactFull(filePath: string, name: string): { returnType?: string } | undefined },
+): ReadonlyMap<string, string> {
+  const result = new Map<string, string>();
+  const fileImports = namedImportMap.get(filePath);
+  if (!fileImports) return result;
+
+  for (const [localName, binding] of fileImports) {
+    const def = symbolTable.lookupExactFull(binding.sourcePath, binding.exportedName);
+    if (!def?.returnType) continue;
+    const simpleReturn = extractReturnTypeName(def.returnType);
+    if (simpleReturn) result.set(localName, simpleReturn);
+  }
+  return result;
+}
+
+/** Build cross-file RAW return types for imported callables.
+ *  Unlike buildImportedReturnTypes (which stores extractReturnTypeName output),
+ *  this stores the raw declared return type string (e.g., 'User[]', 'List<User>').
+ *  Used by lookupRawReturnType for for-loop element extraction via extractElementTypeFromString. */
+export function buildImportedRawReturnTypes(
+  filePath: string,
+  namedImportMap: ReadonlyMap<string, ReadonlyMap<string, { sourcePath: string; exportedName: string }>>,
+  symbolTable: { lookupExactFull(filePath: string, name: string): { returnType?: string } | undefined },
+): ReadonlyMap<string, string> {
+  const result = new Map<string, string>();
+  const fileImports = namedImportMap.get(filePath);
+  if (!fileImports) return result;
+
+  for (const [localName, binding] of fileImports) {
+    const def = symbolTable.lookupExactFull(binding.sourcePath, binding.exportedName);
+    if (!def?.returnType) continue;
+    result.set(localName, def.returnType);
+  }
+  return result;
+}
+
+/** Collect resolved type bindings for exported file-scope symbols.
+ *  Uses graph node isExported flag — does NOT require isExported on SymbolDefinition. */
+function collectExportedBindings(
+  typeEnv: { readonly env: ReadonlyMap<string, ReadonlyMap<string, string>> },
+  filePath: string,
+  symbolTable: { lookupExact(filePath: string, name: string): string | undefined },
+  graph: { getNode(id: string): { properties?: { isExported?: boolean } } | undefined },
+): Map<string, string> | null {
+  const fileScope = typeEnv.env.get('');
+  if (!fileScope || fileScope.size === 0) return null;
+
+  const exported = new Map<string, string>();
+  for (const [varName, typeName] of fileScope) {
+    if (exported.size >= MAX_EXPORTS_PER_FILE) break;
+    if (!typeName || typeName.length > MAX_TYPE_NAME_LENGTH) continue;
+    const nodeId = symbolTable.lookupExact(filePath, varName);
+    if (!nodeId) continue;
+    const node = graph.getNode(nodeId);
+    if (node?.properties?.isExported) {
+      exported.set(varName, typeName);
+    }
+  }
+  return exported.size > 0 ? exported : null;
+}
+
+/** Build ExportedTypeMap from graph nodes — used for worker path where TypeEnv
+ *  is not available in the main thread. Collects returnType/declaredType from
+ *  exported symbols that have callables with known return types. */
+export function buildExportedTypeMapFromGraph(
+  graph: KnowledgeGraph,
+  symbolTable: SymbolTable,
+): ExportedTypeMap {
+  const result: ExportedTypeMap = new Map();
+  graph.forEachNode(node => {
+    if (!node.properties?.isExported) return;
+    if (!node.properties?.filePath || !node.properties?.name) return;
+    const filePath = node.properties.filePath as string;
+    const name = node.properties.name as string;
+    if (!name || name.length > MAX_TYPE_NAME_LENGTH) return;
+    // For callable symbols, use returnType; for properties/variables, use declaredType
+    const def = symbolTable.lookupExactFull(filePath, name);
+    if (!def) return;
+    const typeName = def.returnType ?? def.declaredType;
+    if (!typeName || typeName.length > MAX_TYPE_NAME_LENGTH) return;
+    // Extract simple type name (strip Promise<>, etc.) — reuse shared utility
+    const simpleType = extractReturnTypeName(typeName) ?? typeName;
+    if (!simpleType) return;
+    let fileExports = result.get(filePath);
+    if (!fileExports) { fileExports = new Map(); result.set(filePath, fileExports); }
+    if (fileExports.size < MAX_EXPORTS_PER_FILE) {
+      fileExports.set(name, simpleType);
+    }
+  });
+  return result;
+}
+
+/** Seed cross-file receiver types into pre-extracted call records.
+ *  Fills missing receiverTypeName for single-hop imported variables
+ *  using ExportedTypeMap + namedImportMap — zero disk I/O, zero AST re-parsing.
+ *  Mutates calls in-place. Runs BEFORE processCallsFromExtracted. */
+export function seedCrossFileReceiverTypes(
+  calls: ExtractedCall[],
+  namedImportMap: ReadonlyMap<string, ReadonlyMap<string, { sourcePath: string; exportedName: string }>>,
+  exportedTypeMap: ReadonlyMap<string, ReadonlyMap<string, string>>,
+): { enrichedCount: number } {
+  if (namedImportMap.size === 0 || exportedTypeMap.size === 0) {
+    return { enrichedCount: 0 };
+  }
+  let enrichedCount = 0;
+  for (const call of calls) {
+    if (call.receiverTypeName || !call.receiverName) continue;
+    if (call.callForm !== 'member') continue;
+
+    const fileImports = namedImportMap.get(call.filePath);
+    if (!fileImports) continue;
+
+    const binding = fileImports.get(call.receiverName);
+    if (!binding) continue;
+
+    const upstream = exportedTypeMap.get(binding.sourcePath);
+    if (!upstream) continue;
+
+    const type = upstream.get(binding.exportedName);
+    if (type) {
+      call.receiverTypeName = type;
+      enrichedCount++;
+    }
+  }
+  return { enrichedCount };
+}
+
+// Stdlib methods that preserve the receiver's type identity. When TypeEnv already
+// strips nullable wrappers (Option<User> → User), these chain steps are no-ops
+// for type resolution — the current type passes through unchanged.
+const TYPE_PRESERVING_METHODS = new Set([
+  'unwrap', 'expect', 'unwrap_or', 'unwrap_or_default', 'unwrap_or_else',  // Rust Option/Result
+  'clone', 'to_owned', 'as_ref', 'as_mut', 'borrow', 'borrow_mut',        // Rust clone/borrow
+  'get',                                                                     // Kotlin/Java Optional.get()
+  'orElseThrow',                                                             // Java Optional
+]);
 
 /**
  * Walk up the AST from a node to find the enclosing function/method.
  * Returns null if the call is at module/file level (top-level code).
  */
 const findEnclosingFunction = (
-  node: any,
+  node: SyntaxNode,
   filePath: string,
   ctx: ResolutionContext
 ): string | null => {
@@ -72,7 +229,7 @@ const verifyConstructorBindings = (
     const isClass = tiered?.candidates.some(def => def.type === 'Class') ?? false;
 
     if (isClass) {
-      verified.set(receiverKey(extractFuncNameFromScope(scope), varName), calleeName);
+      verified.set(receiverKey(scope, varName), calleeName);
     } else {
       let callableDefs = tiered?.candidates.filter(d =>
         d.type === 'Function' || d.type === 'Method'
@@ -105,7 +262,7 @@ const verifyConstructorBindings = (
       if (callableDefs && callableDefs.length === 1 && callableDefs[0].returnType) {
         const typeName = extractReturnTypeName(callableDefs[0].returnType);
         if (typeName) {
-          verified.set(receiverKey(extractFuncNameFromScope(scope), varName), typeName);
+          verified.set(receiverKey(scope, varName), typeName);
         }
       }
     }
@@ -120,9 +277,24 @@ export const processCalls = async (
   astCache: ASTCache,
   ctx: ResolutionContext,
   onProgress?: (current: number, total: number) => void,
+  exportedTypeMap?: ExportedTypeMap,
+  /** Phase 14: pre-resolved cross-file bindings to seed into buildTypeEnv. Keyed by filePath → Map<localName, typeName>. */
+  importedBindingsMap?: ReadonlyMap<string, ReadonlyMap<string, string>>,
+  /** Phase 14 E3: cross-file return types for imported callables. Keyed by filePath → Map<calleeName, returnType>.
+   *  Consulted ONLY when SymbolTable has no unambiguous match (local-first principle). */
+  importedReturnTypesMap?: ReadonlyMap<string, ReadonlyMap<string, string>>,
+  /** Phase 14 E3: cross-file RAW return types for for-loop element extraction. Keyed by filePath → Map<calleeName, rawReturnType>. */
+  importedRawReturnTypesMap?: ReadonlyMap<string, ReadonlyMap<string, string>>,
 ): Promise<ExtractedHeritage[]> => {
   const parser = await loadParser();
   const collectedHeritage: ExtractedHeritage[] = [];
+  const pendingWrites: { receiverTypeName: string; propertyName: string; filePath: string; srcId: string }[] = [];
+  // Phase P cross-file: accumulate heritage across files for cross-file isSubclassOf.
+  // Used as a secondary check when per-file parentMap lacks the relationship — helps
+  // when the heritage-declaring file is processed before the call site file.
+  // For remaining cases (reverse file order), the SymbolTable class-type fallback applies.
+  const globalParentMap = new Map<string, string[]>();
+  const globalParentSeen = new Map<string, Set<string>>();
   const logSkipped = isVerboseIngestionEnabled();
   const skippedByLang = logSkipped ? new Map<string, number>() : null;
 
@@ -167,18 +339,94 @@ export const processCalls = async (
     }
 
     const lang = getLanguageFromFilename(file.path);
-    const typeEnv = lang ? buildTypeEnv(tree, lang, ctx.symbols) : null;
+
+    // Pre-pass: extract heritage from query matches to build parentMap for buildTypeEnv.
+    // Heritage-processor runs in PARALLEL, so graph edges don't exist when buildTypeEnv runs.
+    const fileParentMap = new Map<string, string[]>();
+    for (const match of matches) {
+      const captureMap: Record<string, any> = {};
+      match.captures.forEach(c => captureMap[c.name] = c.node);
+      if (captureMap['heritage.class'] && captureMap['heritage.extends']) {
+        const className: string = captureMap['heritage.class'].text;
+        const parentName: string = captureMap['heritage.extends'].text;
+        const extendsNode = captureMap['heritage.extends'];
+        const fieldDecl = extendsNode.parent;
+        if (fieldDecl?.type === 'field_declaration' && fieldDecl.childForFieldName('name')) continue;
+        let parents = fileParentMap.get(className);
+        if (!parents) { parents = []; fileParentMap.set(className, parents); }
+        if (!parents.includes(parentName)) parents.push(parentName);
+      }
+    }
+    const parentMap: ReadonlyMap<string, readonly string[]> = fileParentMap;
+    // Merge per-file heritage into globalParentMap for cross-file isSubclassOf lookups.
+    // Uses a parallel Set (globalParentSeen) for O(1) deduplication instead of O(n) includes().
+    for (const [cls, parents] of fileParentMap) {
+      let global = globalParentMap.get(cls);
+      let seen = globalParentSeen.get(cls);
+      if (!global) { global = []; globalParentMap.set(cls, global); }
+      if (!seen) { seen = new Set(); globalParentSeen.set(cls, seen); }
+      for (const p of parents) {
+        if (!seen.has(p)) { seen.add(p); global.push(p); }
+      }
+    }
+
+    const importedBindings = importedBindingsMap?.get(file.path);
+    const importedReturnTypes = importedReturnTypesMap?.get(file.path);
+    const importedRawReturnTypes = importedRawReturnTypesMap?.get(file.path);
+    const typeEnv = lang ? buildTypeEnv(tree, lang, { symbolTable: ctx.symbols, parentMap, importedBindings, importedReturnTypes, importedRawReturnTypes }) : null;
+    if (typeEnv && exportedTypeMap) {
+      const fileExports = collectExportedBindings(typeEnv, file.path, ctx.symbols, graph);
+      if (fileExports) exportedTypeMap.set(file.path, fileExports);
+    }
     const callRouter = callRouters[language];
 
     const verifiedReceivers = typeEnv && typeEnv.constructorBindings.length > 0
       ? verifyConstructorBindings(typeEnv.constructorBindings, file.path, ctx)
       : new Map<string, string>();
+    const receiverIndex = buildReceiverTypeIndex(verifiedReceivers);
 
     ctx.enableCache(file.path);
 
     matches.forEach(match => {
       const captureMap: Record<string, any> = {};
       match.captures.forEach(c => captureMap[c.name] = c.node);
+      // ── Write access: emit ACCESSES {reason: 'write'} for assignments to member fields ──
+      if (captureMap['assignment'] && captureMap['assignment.receiver'] && captureMap['assignment.property']) {
+        const receiverNode = captureMap['assignment.receiver'];
+        const propertyName: string = captureMap['assignment.property'].text;
+        // Resolve receiver type: simple identifier → TypeEnv lookup or class resolution
+        let receiverTypeName: string | undefined;
+        const receiverText = receiverNode.text;
+        if (receiverText && typeEnv) {
+          receiverTypeName = typeEnv.lookup(receiverText, captureMap['assignment']);
+        }
+        // Fall back to verified constructor bindings (mirrors CALLS resolution tier 2)
+        if (!receiverTypeName && receiverText && receiverIndex.size > 0) {
+          const enclosing = findEnclosingFunction(captureMap['assignment'], file.path, ctx);
+          const funcName = enclosing ? extractFuncNameFromSourceId(enclosing) : '';
+          receiverTypeName = lookupReceiverType(receiverIndex, funcName, receiverText);
+        }
+        if (!receiverTypeName && receiverText) {
+          const resolved = ctx.resolve(receiverText, file.path);
+          if (resolved?.candidates.some(d =>
+            d.type === 'Class' || d.type === 'Struct' || d.type === 'Interface'
+              || d.type === 'Enum' || d.type === 'Record' || d.type === 'Impl',
+          )) {
+            receiverTypeName = receiverText;
+          }
+        }
+        if (receiverTypeName) {
+          const enclosing = findEnclosingFunction(captureMap['assignment'], file.path, ctx);
+          const srcId = enclosing || generateId('File', file.path);
+          // Defer resolution: Ruby attr_accessor properties are registered during
+          // this same loop, so cross-file lookups fail if the declaring file hasn't
+          // been processed yet. Collect now, resolve after all files are done.
+          pendingWrites.push({ receiverTypeName, propertyName, filePath: file.path, srcId });
+        }
+        // Assignment-only capture (no @call sibling): skip the rest of this
+        // forEach iteration — this acts as a `continue` in the match loop.
+        if (!captureMap['call']) return;
+      }
 
       if (!captureMap['call']) return;
 
@@ -212,7 +460,7 @@ export const processCalls = async (
               const nodeId = generateId('Property', `${file.path}:${item.propName}`);
               graph.addNode({
                 id: nodeId,
-                label: 'Property' as any, // TODO: add 'Property' to graph node label union
+                label: 'Property',
                 properties: {
                   name: item.propName, filePath: file.path,
                   startLine: item.startLine, endLine: item.endLine,
@@ -220,8 +468,10 @@ export const processCalls = async (
                   description: item.accessorType,
                 },
               });
-              ctx.symbols.add(file.path, item.propName, nodeId, 'Property',
-                propEnclosingClassId ? { ownerId: propEnclosingClassId } : undefined);
+              ctx.symbols.add(file.path, item.propName, nodeId, 'Property', {
+                ...(propEnclosingClassId ? { ownerId: propEnclosingClassId } : {}),
+                ...(item.declaredType ? { declaredType: item.declaredType } : {}),
+              });
               const relId = generateId('DEFINES', `${fileId}->${nodeId}`);
               graph.addRelationship({
                 id: relId, sourceId: fileId, targetId: nodeId,
@@ -229,9 +479,9 @@ export const processCalls = async (
               });
               if (propEnclosingClassId) {
                 graph.addRelationship({
-                  id: generateId('HAS_METHOD', `${propEnclosingClassId}->${nodeId}`),
+                  id: generateId('HAS_PROPERTY', `${propEnclosingClassId}->${nodeId}`),
                   sourceId: propEnclosingClassId, targetId: nodeId,
-                  type: 'HAS_METHOD', confidence: 1.0, reason: '',
+                  type: 'HAS_PROPERTY', confidence: 1.0, reason: '',
                 });
               }
             }
@@ -249,25 +499,110 @@ export const processCalls = async (
       const callForm = inferCallForm(callNode, nameNode);
       const receiverName = callForm === 'member' ? extractReceiverName(nameNode) : undefined;
       let receiverTypeName = receiverName && typeEnv ? typeEnv.lookup(receiverName, callNode) : undefined;
+      // Phase P: virtual dispatch override — when the declared type is a base class but
+      // the constructor created a known subclass, prefer the more specific type.
+      // Checks per-file parentMap first, then falls back to globalParentMap for
+      // cross-file heritage (e.g. Dog extends Animal declared in a different file).
+      // Reconstructs the exact scope key (funcName@startIndex\0varName) from the
+      // enclosing function AST node for a correct, O(1) map lookup.
+      if (receiverTypeName && receiverName && typeEnv && typeEnv.constructorTypeMap.size > 0) {
+        // Reconstruct scope key to match constructorTypeMap's scope\0varName format
+        let scope = '';
+        let p = callNode.parent;
+        while (p) {
+          if (FUNCTION_NODE_TYPES.has(p.type)) {
+            const { funcName } = extractFunctionName(p);
+            if (funcName) { scope = `${funcName}@${p.startIndex}`; break; }
+          }
+          p = p.parent;
+        }
+        const ctorType = typeEnv.constructorTypeMap.get(`${scope}\0${receiverName}`);
+        if (ctorType && ctorType !== receiverTypeName) {
+          // Verify subclass relationship: per-file parentMap first, then cross-file
+          // globalParentMap, then fall back to SymbolTable class verification.
+          // The SymbolTable fallback handles cross-file cases where heritage is declared
+          // in a file not yet processed (e.g. Dog extends Animal in models/Dog.kt when
+          // processing services/App.kt). Since constructorTypeMap only records entries
+          // when a type annotation AND constructor are both present (val x: Base = Sub()),
+          // confirming both are class-like types is sufficient — the original code would
+          // not compile if Sub didn't extend Base.
+          if (isSubclassOf(ctorType, receiverTypeName, parentMap)
+            || isSubclassOf(ctorType, receiverTypeName, globalParentMap)
+            || (ctx.symbols.lookupFuzzy(ctorType).some(d => d.type === 'Class' || d.type === 'Struct')
+              && ctx.symbols.lookupFuzzy(receiverTypeName).some(d => d.type === 'Class' || d.type === 'Struct' || d.type === 'Interface'))) {
+            receiverTypeName = ctorType;
+          }
+        }
+      }
       // Fall back to verified constructor bindings for return type inference
-      if (!receiverTypeName && receiverName && verifiedReceivers.size > 0) {
+      if (!receiverTypeName && receiverName && receiverIndex.size > 0) {
         const enclosingFunc = findEnclosingFunction(callNode, file.path, ctx);
         const funcName = enclosingFunc ? extractFuncNameFromSourceId(enclosingFunc) : '';
-        receiverTypeName = verifiedReceivers.get(receiverKey(funcName, receiverName))
-          ?? verifiedReceivers.get(receiverKey('', receiverName));
+        receiverTypeName = lookupReceiverType(receiverIndex, funcName, receiverName);
       }
+      // Fall back to class-as-receiver for static method calls (e.g. UserService.find_user()).
+      // When the receiver name is not a variable in TypeEnv but resolves to a Class/Struct/Interface
+      // through the standard tiered resolution, use it directly as the receiver type.
+      if (!receiverTypeName && receiverName && callForm === 'member') {
+        const typeResolved = ctx.resolve(receiverName, file.path);
+        if (typeResolved && typeResolved.candidates.some(
+          d => d.type === 'Class' || d.type === 'Interface' || d.type === 'Struct' || d.type === 'Enum',
+        )) {
+          receiverTypeName = receiverName;
+        }
+      }
+      // Hoist sourceId so it's available for ACCESSES edge emission during chain walk.
+      const enclosingFuncId = findEnclosingFunction(callNode, file.path, ctx);
+      const sourceId = enclosingFuncId || generateId('File', file.path);
+
+      // Fall back to mixed chain resolution when the receiver is a complex expression
+      // (field chain, call chain, or interleaved — e.g. user.address.city.save() or
+      // svc.getUser().address.save()). Handles all cases with a single unified walk.
+      if (callForm === 'member' && !receiverTypeName && !receiverName) {
+        const receiverNode = extractReceiverNode(nameNode);
+        if (receiverNode) {
+          const extracted = extractMixedChain(receiverNode);
+          if (extracted && extracted.chain.length > 0) {
+            let currentType = extracted.baseReceiverName && typeEnv
+              ? typeEnv.lookup(extracted.baseReceiverName, callNode)
+              : undefined;
+            if (!currentType && extracted.baseReceiverName && receiverIndex.size > 0) {
+              const funcName = enclosingFuncId ? extractFuncNameFromSourceId(enclosingFuncId) : '';
+              currentType = lookupReceiverType(receiverIndex, funcName, extracted.baseReceiverName);
+            }
+            if (!currentType && extracted.baseReceiverName) {
+              const cr = ctx.resolve(extracted.baseReceiverName, file.path);
+              if (cr?.candidates.some(d =>
+                d.type === 'Class' || d.type === 'Interface' || d.type === 'Struct' || d.type === 'Enum',
+              )) {
+                currentType = extracted.baseReceiverName;
+              }
+            }
+            if (currentType) {
+              receiverTypeName = walkMixedChain(
+                extracted.chain, currentType, file.path, ctx,
+                makeAccessEmitter(graph, sourceId),
+              );
+            }
+          }
+        }
+      }
+
+      // Build overload hints for languages with inferLiteralType (Java/Kotlin/C#/C++).
+      // Only used when multiple candidates survive arity filtering — ~1-3% of calls.
+      const langConfig = lang ? typeConfigs[lang as keyof typeof typeConfigs] : undefined;
+      const hints: OverloadHints | undefined = langConfig?.inferLiteralType
+        ? { callNode, inferLiteralType: langConfig.inferLiteralType }
+        : undefined;
 
       const resolved = resolveCallTarget({
         calledName,
         argCount: countCallArguments(callNode),
         callForm,
         receiverTypeName,
-      }, file.path, ctx);
+      }, file.path, ctx, hints);
 
       if (!resolved) return;
-
-      const enclosingFuncId = findEnclosingFunction(callNode, file.path, ctx);
-      const sourceId = enclosingFuncId || generateId('File', file.path);
       const relId = generateId('CALLS', `${sourceId}:${calledName}->${resolved.nodeId}`);
 
       graph.addRelationship({
@@ -283,6 +618,22 @@ export const processCalls = async (
     ctx.clearCache();
   }
 
+  // ── Resolve deferred write-access edges ──
+  // All properties (including Ruby attr_accessor) are now registered.
+  for (const pw of pendingWrites) {
+    const fieldOwner = resolveFieldOwnership(pw.receiverTypeName, pw.propertyName, pw.filePath, ctx);
+    if (fieldOwner) {
+      graph.addRelationship({
+        id: generateId('ACCESSES', `${pw.srcId}:${fieldOwner.nodeId}:write`),
+        sourceId: pw.srcId,
+        targetId: fieldOwner.nodeId,
+        type: 'ACCESSES',
+        confidence: 1.0,
+        reason: 'write',
+      });
+    }
+  }
+
   if (skippedByLang && skippedByLang.size > 0) {
     for (const [lang, count] of skippedByLang.entries()) {
       console.warn(
@@ -301,6 +652,7 @@ interface ResolveResult {
   nodeId: string;
   confidence: number;
   reason: string;
+  returnType?: string;
 }
 
 const CALLABLE_SYMBOL_TYPES = new Set([
@@ -339,7 +691,9 @@ const filterCallableCandidates = (
   if (!hasParameterMetadata) return kindFiltered;
 
   return kindFiltered.filter(candidate =>
-    candidate.parameterCount === undefined || candidate.parameterCount === argCount
+    candidate.parameterCount === undefined
+    || (argCount >= (candidate.requiredParameterCount ?? candidate.parameterCount)
+      && argCount <= candidate.parameterCount)
   );
 };
 
@@ -350,14 +704,117 @@ const toResolveResult = (
   nodeId: definition.nodeId,
   confidence: TIER_CONFIDENCE[tier],
   reason: tier === 'same-file' ? 'same-file' : tier === 'import-scoped' ? 'import-resolved' : 'global',
+  returnType: definition.returnType,
 });
 
+
+/** Optional hints for overload disambiguation via argument literal types.
+ *  Only available on the sequential path (has AST); worker path passes undefined. */
+interface OverloadHints {
+  callNode: SyntaxNode;
+  inferLiteralType: LiteralTypeInferrer;
+}
+
+/**
+ * Kotlin (and JVM in general) uses boxed type names in parameter declarations
+ * (e.g. `Int`, `Long`, `Boolean`) while inferJvmLiteralType returns unboxed
+ * primitives (`int`, `long`, `boolean`). Normalise both sides to lowercase so
+ * that the comparison `'Int' === 'int'` does not fail.
+ *
+ * Only applied to single-word identifiers that look like a JVM primitive alias;
+ * multi-word or qualified names are left untouched.
+ */
+const KOTLIN_BOXED_TO_PRIMITIVE: Readonly<Record<string, string>> = {
+  Int: 'int',
+  Long: 'long',
+  Short: 'short',
+  Byte: 'byte',
+  Float: 'float',
+  Double: 'double',
+  Boolean: 'boolean',
+  Char: 'char',
+};
+
+const normalizeJvmTypeName = (name: string): string =>
+  KOTLIN_BOXED_TO_PRIMITIVE[name] ?? name;
+
+/**
+ * Try to disambiguate overloaded candidates using argument literal types.
+ * Only invoked when filteredCandidates.length > 1 and at least one has parameterTypes.
+ * Returns the single matching candidate, or null if ambiguous/inconclusive.
+ */
+const tryOverloadDisambiguation = (
+  candidates: SymbolDefinition[],
+  hints: OverloadHints,
+): SymbolDefinition | null => {
+  if (!candidates.some(c => c.parameterTypes)) return null;
+
+  // Find the argument list node in the call expression.
+  // Kotlin wraps value_arguments inside a call_suffix child, so we must also
+  // search one level deeper when a direct match is not found.
+  let argList: any = hints.callNode.childForFieldName?.('arguments')
+    ?? hints.callNode.children.find((c: any) =>
+      c.type === 'arguments' || c.type === 'argument_list' || c.type === 'value_arguments'
+    );
+  if (!argList) {
+    // Kotlin: call_expression → call_suffix → value_arguments
+    const callSuffix = hints.callNode.children.find((c: any) => c.type === 'call_suffix');
+    if (callSuffix) {
+      argList = callSuffix.children.find((c: any) => c.type === 'value_arguments');
+    }
+  }
+  if (!argList) return null;
+
+  const argTypes: (string | undefined)[] = [];
+  for (const arg of argList.namedChildren) {
+    if (arg.type === 'comment') continue;
+    // Unwrap argument wrapper nodes before passing to inferLiteralType:
+    //   - Kotlin value_argument: has 'value' field containing the literal
+    //   - C# argument: has 'expression' field (handles named args like `name: "alice"`
+    //     where firstNamedChild would return name_colon instead of the value)
+    //   - Java/others: arg IS the literal directly (no unwrapping needed)
+    const valueNode = arg.childForFieldName?.('value')
+      ?? arg.childForFieldName?.('expression')
+      ?? (arg.type === 'argument' || arg.type === 'value_argument'
+        ? arg.firstNamedChild ?? arg
+        : arg);
+    argTypes.push(hints.inferLiteralType(valueNode));
+  }
+
+  // If no literal types could be inferred, can't disambiguate
+  if (argTypes.every(t => t === undefined)) return null;
+
+  const matched = candidates.filter(c => {
+    // Keep candidates without type info — conservative: partially-annotated codebases
+    // (e.g. C++ with some missing declarations) may have mixed typed/untyped overloads.
+    // If one typed and one untyped both survive, matched.length > 1 → returns null (no edge).
+    if (!c.parameterTypes) return true;
+    return c.parameterTypes.every((pType, i) => {
+      if (i >= argTypes.length || !argTypes[i]) return true;
+      // Normalise Kotlin boxed type names (Int→int, Boolean→boolean, etc.) so
+      // that the stored declaration type matches the inferred literal type.
+      return normalizeJvmTypeName(pType) === argTypes[i];
+    });
+  });
+
+  if (matched.length === 1) return matched[0];
+  // Multiple survivors may share the same nodeId (e.g. TypeScript overload signatures +
+  // implementation body all collide via generateId). Deduplicate by nodeId — if all
+  // matched candidates resolve to the same graph node, disambiguation succeeded.
+  if (matched.length > 1) {
+    const uniqueIds = new Set(matched.map(c => c.nodeId));
+    if (uniqueIds.size === 1) return matched[0];
+  }
+  return null;
+};
+
 /**
  * Resolve a function call to its target node ID using priority strategy:
  * A. Narrow candidates by scope tier via ctx.resolve()
  * B. Filter to callable symbol kinds (constructor-aware when callForm is set)
  * C. Apply arity filtering when parameter metadata is available
  * D. Apply receiver-type filtering for member calls with typed receivers
+ * E. Apply overload disambiguation via argument literal types (when available)
  *
  * If filtering still leaves multiple candidates, refuse to emit a CALLS edge.
  */
@@ -365,6 +822,7 @@ const resolveCallTarget = (
   call: Pick<ExtractedCall, 'calledName' | 'argCount' | 'callForm' | 'receiverTypeName'>,
   currentFile: string,
   ctx: ResolutionContext,
+  overloadHints?: OverloadHints,
 ): ResolveResult | null => {
   const tiered = ctx.resolve(call.calledName, currentFile);
   if (!tiered) return null;
@@ -405,149 +863,39 @@ const resolveCallTarget = (
       if (ownerFiltered.length === 1) {
         return toResolveResult(ownerFiltered[0], tiered.tier);
       }
+      // E. Try overload disambiguation on the narrowed pool
+      if ((fileFiltered.length > 1 || ownerFiltered.length > 1) && overloadHints) {
+        const overloadPool = ownerFiltered.length > 1 ? ownerFiltered : fileFiltered;
+        const disambiguated = tryOverloadDisambiguation(overloadPool, overloadHints);
+        if (disambiguated) return toResolveResult(disambiguated, tiered.tier);
+      }
       if (fileFiltered.length > 1 || ownerFiltered.length > 1) return null;
     }
   }
 
+  // E. Overload disambiguation: when multiple candidates survive arity + receiver filtering,
+  // try matching argument literal types against parameter types (Phase P).
+  // Only available on sequential path (has AST); worker path falls through gracefully.
+  if (filteredCandidates.length > 1 && overloadHints) {
+    const disambiguated = tryOverloadDisambiguation(filteredCandidates, overloadHints);
+    if (disambiguated) return toResolveResult(disambiguated, tiered.tier);
+  }
+
   if (filteredCandidates.length !== 1) return null;
 
   return toResolveResult(filteredCandidates[0], tiered.tier);
 };
 
-// ── Return type text helpers ─────────────────────────────────────────────
-// extractSimpleTypeName works on AST nodes; this operates on raw return-type
-// text already stored in SymbolDefinition (e.g. "User", "Promise<User>",
-// "User | null", "*User").  Extracts the base user-defined type name.
-
-/** Primitive / built-in types that should NOT produce a receiver binding. */
-const PRIMITIVE_TYPES = new Set([
-  'string', 'number', 'boolean', 'void', 'int', 'float', 'double', 'long',
-  'short', 'byte', 'char', 'bool', 'str', 'i8', 'i16', 'i32', 'i64',
-  'u8', 'u16', 'u32', 'u64', 'f32', 'f64', 'usize', 'isize',
-  'undefined', 'null', 'None', 'nil',
-]);
-
-/**
- * Extract a simple type name from raw return-type text.
- * Handles common patterns:
- *   "User"                → "User"
- *   "Promise<User>"       → "User"   (unwrap wrapper generics)
- *   "Option<User>"        → "User"
- *   "Result<User, Error>" → "User"   (first type arg)
- *   "User | null"         → "User"   (strip nullable union)
- *   "User?"               → "User"   (strip nullable suffix)
- *   "*User"               → "User"   (Go pointer)
- *   "&User"               → "User"   (Rust reference)
- * Returns undefined for complex types or primitives.
- */
-const WRAPPER_GENERICS = new Set([
-  'Promise', 'Observable', 'Future', 'CompletableFuture', 'Task', 'ValueTask',  // async wrappers
-  'Option', 'Some', 'Optional', 'Maybe',                                         // nullable wrappers
-  'Result', 'Either',                                                             // result wrappers
-  // Rust smart pointers (Deref to inner type)
-  'Rc', 'Arc', 'Weak',                                                          // pointer types
-  'MutexGuard', 'RwLockReadGuard', 'RwLockWriteGuard',                          // guard types
-  'Ref', 'RefMut',                                                               // RefCell guards
-  'Cow',                                                                         // copy-on-write
-  // Containers (List, Array, Vec, Set, etc.) are intentionally excluded —
-  // methods are called on the container, not the element type.
-  // Non-wrapper generics return the base type (e.g., List) via the else branch.
-]);
-
-/**
- * Extracts the first type argument from a comma-separated generic argument string,
- * respecting nested angle brackets. For example:
- *   "Result<User, Error>"  → "Result<User, Error>"  (no top-level comma)
- *   "User, Error"          → "User"
- *   "Map<K, V>, string"    → "Map<K, V>"
- */
-function extractFirstGenericArg(args: string): string {
-  let depth = 0;
-  for (let i = 0; i < args.length; i++) {
-    if (args[i] === '<') depth++;
-    else if (args[i] === '>') depth--;
-    else if (args[i] === ',' && depth === 0) return args.slice(0, i).trim();
-  }
-  return args.trim();
-}
-
-/**
- * Extract the first non-lifetime type argument from a generic argument string.
- * Skips Rust lifetime parameters (e.g., `'a`, `'_`) to find the actual type.
- *   "'_, User"       → "User"
- *   "'a, User"       → "User"
- *   "User, Error"    → "User"  (no lifetime — delegates to extractFirstGenericArg)
- */
-function extractFirstTypeArg(args: string): string {
-  let remaining = args;
-  while (remaining) {
-    const first = extractFirstGenericArg(remaining);
-    if (!first.startsWith("'")) return first;
-    // Skip past this lifetime arg + the comma separator
-    const commaIdx = remaining.indexOf(',', first.length);
-    if (commaIdx < 0) return first; // only lifetimes — fall through
-    remaining = remaining.slice(commaIdx + 1).trim();
-  }
-  return args.trim();
-}
-
-export const extractReturnTypeName = (raw: string): string | undefined => {
-  let text = raw.trim();
-  if (!text) return undefined;
-
-  // Strip pointer/reference prefixes: *User, &User, &mut User
-  text = text.replace(/^[&*]+\s*(mut\s+)?/, '');
-
-  // Strip nullable suffix: User?
-  text = text.replace(/\?$/, '');
-
-  // Handle union types: "User | null" → "User"
-  if (text.includes('|')) {
-    const parts = text.split('|').map(p => p.trim()).filter(p =>
-      p !== 'null' && p !== 'undefined' && p !== 'void' && p !== 'None' && p !== 'nil'
-    );
-    if (parts.length === 1) text = parts[0];
-    else return undefined; // genuine union — too complex
-  }
-
-  // Handle generics: Promise<User> → unwrap if wrapper, else take base
-  const genericMatch = text.match(/^(\w+)\s*<(.+)>$/);
-  if (genericMatch) {
-    const [, base, args] = genericMatch;
-    if (WRAPPER_GENERICS.has(base)) {
-      // Take the first non-lifetime type argument, using bracket-balanced splitting
-      // so that nested generics like Result<User, Error> are not split at the inner
-      // comma. Lifetime parameters (Rust 'a, '_) are skipped.
-      const firstArg = extractFirstTypeArg(args);
-      return extractReturnTypeName(firstArg);
-    }
-    // Non-wrapper generic: return the base type (e.g., Map<K,V> → Map)
-    return PRIMITIVE_TYPES.has(base.toLowerCase()) ? undefined : base;
-  }
-
-  // Bare wrapper type without generic argument (e.g. Task, Promise, Option)
-  // should not produce a binding — these are meaningless without a type parameter
-  if (WRAPPER_GENERICS.has(text)) return undefined;
-
-  // Handle qualified names: models.User → User, Models::User → User, \App\Models\User → User
-  if (text.includes('::') || text.includes('.') || text.includes('\\')) {
-    text = text.split(/::|[.\\]/).pop()!;
-  }
-
-  // Final check: skip primitives
-  if (PRIMITIVE_TYPES.has(text) || PRIMITIVE_TYPES.has(text.toLowerCase())) return undefined;
-
-  // Must start with uppercase (class/type convention) or be a valid identifier
-  if (!/^[A-Z_]\w*$/.test(text)) return undefined;
-
-  return text;
-};
-
 // ── Scope key helpers ────────────────────────────────────────────────────
 // Scope keys use the format "funcName@startIndex" (produced by type-env.ts).
 // Source IDs use "Label:filepath:funcName" (produced by parse-worker.ts).
 // NUL (\0) is used as a composite-key separator because it cannot appear
 // in source-code identifiers, preventing ambiguous concatenation.
+//
+// receiverKey stores the FULL scope (funcName@startIndex) to prevent
+// collisions between overloaded methods with the same name in different
+// classes (e.g. User.save@100 and Repo.save@200 are distinct keys).
+// Lookup uses a secondary funcName-only index built in lookupReceiverType.
 
 /** Extract the function name from a scope key ("funcName@startIndex" → "funcName"). */
 const extractFuncNameFromScope = (scope: string): string =>
@@ -559,9 +907,206 @@ const extractFuncNameFromSourceId = (sourceId: string): string => {
   return lastColon >= 0 ? sourceId.slice(lastColon + 1) : '';
 };
 
-/** Build a scope-aware composite key for receiver type lookup. */
-const receiverKey = (funcName: string, varName: string): string =>
-  `${funcName}\0${varName}`;
+/**
+ * Build a composite key for receiver type storage.
+ * Uses the full scope string (e.g. "save@100") to distinguish overloaded
+ * methods with the same name in different classes.
+ */
+const receiverKey = (scope: string, varName: string): string =>
+  `${scope}\0${varName}`;
+
+/**
+ * Pre-built secondary index for O(1) receiver type lookups.
+ * Built once per file from the verified receiver map, keyed by funcName → varName.
+ */
+type ReceiverTypeEntry =
+  | { readonly kind: 'resolved'; readonly value: string }
+  | { readonly kind: 'ambiguous' };
+type ReceiverTypeIndex = Map<string, Map<string, ReceiverTypeEntry>>;
+
+/**
+ * Build a two-level secondary index from the verified receiver map.
+ * The verified map is keyed by `scope\0varName` where scope is either
+ * "funcName@startIndex" (inside a function) or "" (file level).
+ * Index structure: Map<funcName, Map<varName, ReceiverTypeEntry>>
+ */
+const buildReceiverTypeIndex = (map: Map<string, string>): ReceiverTypeIndex => {
+  const index: ReceiverTypeIndex = new Map();
+  for (const [key, typeName] of map) {
+    const nul = key.indexOf('\0');
+    if (nul < 0) continue;
+    const scope = key.slice(0, nul);
+    const varName = key.slice(nul + 1);
+    if (!varName) continue;
+    if (scope !== '' && !scope.includes('@')) continue;
+    const funcName = scope === '' ? '' : scope.slice(0, scope.indexOf('@'));
+
+    let varMap = index.get(funcName);
+    if (!varMap) { varMap = new Map(); index.set(funcName, varMap); }
+
+    const existing = varMap.get(varName);
+    if (existing === undefined) {
+      varMap.set(varName, { kind: 'resolved', value: typeName });
+    } else if (existing.kind === 'resolved' && existing.value !== typeName) {
+      varMap.set(varName, { kind: 'ambiguous' });
+    }
+  }
+  return index;
+};
+
+/**
+ * O(1) receiver type lookup using the pre-built secondary index.
+ * Returns the unique type name if unambiguous. Falls back to file-level scope.
+ */
+const lookupReceiverType = (
+  index: ReceiverTypeIndex,
+  funcName: string,
+  varName: string,
+): string | undefined => {
+  const funcBucket = index.get(funcName);
+  if (funcBucket) {
+    const entry = funcBucket.get(varName);
+    if (entry?.kind === 'resolved') return entry.value;
+    if (entry?.kind === 'ambiguous') {
+      // Ambiguous in this function scope — try file-level fallback
+      const fileEntry = index.get('')?.get(varName);
+      return fileEntry?.kind === 'resolved' ? fileEntry.value : undefined;
+    }
+  }
+  // Fallback: file-level scope (funcName "")
+  if (funcName !== '') {
+    const fileEntry = index.get('')?.get(varName);
+    if (fileEntry?.kind === 'resolved') return fileEntry.value;
+  }
+  return undefined;
+};
+
+interface FieldResolution {
+  typeName: string;      // resolved declared type (continues chain threading)
+  fieldNodeId: string;   // nodeId of the Property symbol (for ACCESSES edge target)
+}
+
+/**
+ * Resolve the type that results from accessing `receiverName.fieldName`.
+ * Requires declaredType on the Property node (needed for chain walking continuation).
+ */
+const resolveFieldAccessType = (
+  receiverName: string,
+  fieldName: string,
+  filePath: string,
+  ctx: ResolutionContext,
+): FieldResolution | undefined => {
+  const fieldDef = resolveFieldOwnership(receiverName, fieldName, filePath, ctx);
+  if (!fieldDef?.declaredType) return undefined;
+
+  // Use stripNullable (not extractReturnTypeName) — field types like List<User>
+  // should be preserved as-is, not unwrapped to User. Only strip nullable wrappers.
+  return {
+    typeName: stripNullable(fieldDef.declaredType),
+    fieldNodeId: fieldDef.nodeId,
+  };
+};
+
+/**
+ * Resolve a field's Property node given a receiver type name and field name.
+ * Does NOT require declaredType — used by write-access tracking where only the
+ * fieldNodeId is needed (no chain continuation).
+ */
+const resolveFieldOwnership = (
+  receiverName: string,
+  fieldName: string,
+  filePath: string,
+  ctx: ResolutionContext,
+): { nodeId: string; declaredType?: string } | undefined => {
+  const typeResolved = ctx.resolve(receiverName, filePath);
+  if (!typeResolved) return undefined;
+  const classDef = typeResolved.candidates.find(
+    d => d.type === 'Class' || d.type === 'Struct' || d.type === 'Interface'
+      || d.type === 'Enum' || d.type === 'Record' || d.type === 'Impl',
+  );
+  if (!classDef) return undefined;
+
+  return ctx.symbols.lookupFieldByOwner(classDef.nodeId, fieldName) ?? undefined;
+};
+
+/**
+ * Create a deduplicated ACCESSES edge emitter for a single source node.
+ * Each (sourceId, fieldNodeId) pair is emitted at most once per source.
+ */
+const makeAccessEmitter = (
+  graph: KnowledgeGraph,
+  sourceId: string,
+): OnFieldResolved => {
+  const emitted = new Set<string>();
+  return (fieldNodeId: string): void => {
+    const key = `${sourceId}\0${fieldNodeId}`;
+    if (emitted.has(key)) return;
+    emitted.add(key);
+
+    graph.addRelationship({
+      id: generateId('ACCESSES', `${sourceId}:${fieldNodeId}:read`),
+      sourceId,
+      targetId: fieldNodeId,
+      type: 'ACCESSES',
+      confidence: 1.0,
+      reason: 'read',
+    });
+  };
+};
+
+/**
+ * Walk a pre-built mixed chain of field/call steps, threading the current type
+ * through each step and returning the final resolved type.
+ *
+ * Returns `undefined` if any step cannot be resolved (chain is broken).
+ * The caller is responsible for seeding `startType` from its own context
+ * (TypeEnv, constructor bindings, or static-class fallback).
+ */
+type OnFieldResolved = (fieldNodeId: string) => void;
+
+const walkMixedChain = (
+  chain: MixedChainStep[],
+  startType: string,
+  filePath: string,
+  ctx: ResolutionContext,
+  onFieldResolved?: OnFieldResolved,
+): string | undefined => {
+  let currentType: string | undefined = startType;
+  for (const step of chain) {
+    if (!currentType) break;
+    if (step.kind === 'field') {
+      const resolved = resolveFieldAccessType(currentType, step.name, filePath, ctx);
+      if (!resolved) { currentType = undefined; break; }
+      onFieldResolved?.(resolved.fieldNodeId);
+      currentType = resolved.typeName;
+    } else {
+      // Ruby/Python: property access is syntactically identical to method calls.
+      // Try field resolution first — if the name is a known property with declaredType,
+      // use that type directly. Otherwise fall back to method call resolution.
+      const fieldResolved = resolveFieldAccessType(currentType, step.name, filePath, ctx);
+      if (fieldResolved) {
+        onFieldResolved?.(fieldResolved.fieldNodeId);
+        currentType = fieldResolved.typeName;
+        continue;
+      }
+      const resolved = resolveCallTarget(
+        { calledName: step.name, callForm: 'member', receiverTypeName: currentType },
+        filePath,
+        ctx,
+      );
+      if (!resolved) {
+        // Stdlib passthrough: unwrap(), clone(), etc. preserve the receiver type
+        if (TYPE_PRESERVING_METHODS.has(step.name)) continue;
+        currentType = undefined; break;
+      }
+      if (!resolved.returnType) { currentType = undefined; break; }
+      const retType = extractReturnTypeName(resolved.returnType);
+      if (!retType) { currentType = undefined; break; }
+      currentType = retType;
+    }
+  }
+  return currentType;
+};
 
 /**
  * Fast path: resolve pre-extracted call sites from workers.
@@ -577,12 +1122,12 @@ export const processCallsFromExtracted = async (
   // Scope-aware receiver types: keyed by filePath → "funcName\0varName" → typeName.
   // The scope dimension prevents collisions when two functions in the same file
   // have same-named locals pointing to different constructor types.
-  const fileReceiverTypes = new Map<string, Map<string, string>>();
+  const fileReceiverTypes = new Map<string, ReceiverTypeIndex>();
   if (constructorBindings) {
     for (const { filePath, bindings } of constructorBindings) {
       const verified = verifyConstructorBindings(bindings, filePath, ctx, graph);
       if (verified.size > 0) {
-        fileReceiverTypes.set(filePath, verified);
+        fileReceiverTypes.set(filePath, buildReceiverTypeIndex(verified));
       }
     }
   }
@@ -593,7 +1138,6 @@ export const processCallsFromExtracted = async (
     if (!list) { list = []; byFile.set(call.filePath, list); }
     list.push(call);
   }
-
   const totalFiles = byFile.size;
   let filesProcessed = 0;
 
@@ -609,15 +1153,55 @@ export const processCallsFromExtracted = async (
 
     for (const call of calls) {
       let effectiveCall = call;
+
+      // Step 1: resolve receiver type from constructor bindings
       if (!call.receiverTypeName && call.receiverName && receiverMap) {
         const callFuncName = extractFuncNameFromSourceId(call.sourceId);
-        const resolvedType = receiverMap.get(receiverKey(callFuncName, call.receiverName))
-          ?? receiverMap.get(receiverKey('', call.receiverName)); // fall back to file-level scope
+        const resolvedType = lookupReceiverType(receiverMap, callFuncName, call.receiverName);
         if (resolvedType) {
           effectiveCall = { ...call, receiverTypeName: resolvedType };
         }
       }
 
+      // Step 1b: class-as-receiver for static method calls (e.g. UserService.find_user())
+      if (!effectiveCall.receiverTypeName && effectiveCall.receiverName && effectiveCall.callForm === 'member') {
+        const typeResolved = ctx.resolve(effectiveCall.receiverName, effectiveCall.filePath);
+        if (typeResolved && typeResolved.candidates.some(
+          d => d.type === 'Class' || d.type === 'Interface' || d.type === 'Struct' || d.type === 'Enum',
+        )) {
+          effectiveCall = { ...effectiveCall, receiverTypeName: effectiveCall.receiverName };
+        }
+      }
+
+      // Step 1c: mixed chain resolution (field, call, or interleaved — e.g. svc.getUser().address.save()).
+      // Runs whenever receiverMixedChain is present. Steps 1/1b may have resolved the base receiver
+      // type already; that type is used as the chain's starting point.
+      if (effectiveCall.receiverMixedChain?.length) {
+        // Use the already-resolved base type (from Steps 1/1b) or look it up now.
+        let currentType: string | undefined = effectiveCall.receiverTypeName;
+        if (!currentType && effectiveCall.receiverName && receiverMap) {
+          const callFuncName = extractFuncNameFromSourceId(effectiveCall.sourceId);
+          currentType = lookupReceiverType(receiverMap, callFuncName, effectiveCall.receiverName);
+        }
+        if (!currentType && effectiveCall.receiverName) {
+          const typeResolved = ctx.resolve(effectiveCall.receiverName, effectiveCall.filePath);
+          if (typeResolved?.candidates.some(d =>
+            d.type === 'Class' || d.type === 'Interface' || d.type === 'Struct' || d.type === 'Enum',
+          )) {
+            currentType = effectiveCall.receiverName;
+          }
+        }
+        if (currentType) {
+          const walkedType = walkMixedChain(
+            effectiveCall.receiverMixedChain, currentType, effectiveCall.filePath, ctx,
+            makeAccessEmitter(graph, effectiveCall.sourceId),
+          );
+          if (walkedType) {
+            effectiveCall = { ...effectiveCall, receiverTypeName: walkedType };
+          }
+        }
+      }
+
       const resolved = resolveCallTarget(effectiveCall, effectiveCall.filePath, ctx);
       if (!resolved) continue;
 
@@ -638,6 +1222,63 @@ export const processCallsFromExtracted = async (
   onProgress?.(totalFiles, totalFiles);
 };
 
+/**
+ * Resolve pre-extracted field write assignments to ACCESSES {reason: 'write'} edges.
+ * Accepts optional constructorBindings for return-type-aware receiver inference,
+ * mirroring processCallsFromExtracted's verified binding lookup.
+ */
+export const processAssignmentsFromExtracted = (
+  graph: KnowledgeGraph,
+  assignments: ExtractedAssignment[],
+  ctx: ResolutionContext,
+  constructorBindings?: FileConstructorBindings[],
+): void => {
+  // Build per-file receiver type indexes from verified constructor bindings
+  const fileReceiverTypes = new Map<string, ReceiverTypeIndex>();
+  if (constructorBindings) {
+    for (const { filePath, bindings } of constructorBindings) {
+      const verified = verifyConstructorBindings(bindings, filePath, ctx, graph);
+      if (verified.size > 0) {
+        fileReceiverTypes.set(filePath, buildReceiverTypeIndex(verified));
+      }
+    }
+  }
+
+  for (const asn of assignments) {
+    // Resolve the receiver type
+    let receiverTypeName = asn.receiverTypeName;
+    // Tier 2: verified constructor bindings (return-type inference)
+    if (!receiverTypeName && fileReceiverTypes.size > 0) {
+      const receiverMap = fileReceiverTypes.get(asn.filePath);
+      if (receiverMap) {
+        const funcName = extractFuncNameFromSourceId(asn.sourceId);
+        receiverTypeName = lookupReceiverType(receiverMap, funcName, asn.receiverText);
+      }
+    }
+    // Tier 3: static class-as-receiver fallback
+    if (!receiverTypeName) {
+      const resolved = ctx.resolve(asn.receiverText, asn.filePath);
+      if (resolved?.candidates.some(d =>
+        d.type === 'Class' || d.type === 'Struct' || d.type === 'Interface'
+          || d.type === 'Enum' || d.type === 'Record' || d.type === 'Impl',
+      )) {
+        receiverTypeName = asn.receiverText;
+      }
+    }
+    if (!receiverTypeName) continue;
+    const fieldOwner = resolveFieldOwnership(receiverTypeName, asn.propertyName, asn.filePath, ctx);
+    if (!fieldOwner) continue;
+    graph.addRelationship({
+      id: generateId('ACCESSES', `${asn.sourceId}:${fieldOwner.nodeId}:write`),
+      sourceId: asn.sourceId,
+      targetId: fieldOwner.nodeId,
+      type: 'ACCESSES',
+      confidence: 1.0,
+      reason: 'write',
+    });
+  }
+};
+
 /**
  * Resolve pre-extracted Laravel routes to CALLS edges from route files to controller methods.
  */
diff --git a/gitnexus/src/core/ingestion/call-routing.ts b/gitnexus/src/core/ingestion/call-routing.ts
index 50a91d29b..d5bd8e9b6 100644
--- a/gitnexus/src/core/ingestion/call-routing.ts
+++ b/gitnexus/src/core/ingestion/call-routing.ts
@@ -18,6 +18,12 @@ import { SupportedLanguages } from '../../config/supported-languages.js';
 /** null = this call was not routed; fall through to default call handling */
 export type CallRoutingResult = RubyCallRouting | null;
 
+/**
+ * Per-language call router.
+ * IMPORTANT: Call-routed imports bypass preprocessImportPath(), so any router that
+ * returns an importPath MUST validate it independently (length cap, control-char
+ * rejection). See routeRubyCall for the reference implementation.
+ */
 export type CallRouter = (
   calledName: string,
   callNode: any,
@@ -27,7 +33,7 @@ export type CallRouter = (
 const noRouting: CallRouter = () => null;
 
 /** Per-language call routing. noRouting = no special routing (normal call processing) */
-export const callRouters: Record<SupportedLanguages, CallRouter> = {
+export const callRouters = {
   [SupportedLanguages.JavaScript]: noRouting,
   [SupportedLanguages.TypeScript]: noRouting,
   [SupportedLanguages.Python]: noRouting,
@@ -41,7 +47,7 @@ export const callRouters: Record<SupportedLanguages, CallRouter> = {
   [SupportedLanguages.CPlusPlus]: noRouting,
   [SupportedLanguages.C]: noRouting,
   [SupportedLanguages.Ruby]: routeRubyCall,
-};
+} satisfies Record<SupportedLanguages, CallRouter>;
 
 // ── Result types ────────────────────────────────────────────────────────────
 
@@ -65,6 +71,8 @@ export interface RubyPropertyItem {
   accessorType: RubyAccessorType;
   startLine: number;
   endLine: number;
+  /** YARD @return [Type] annotation preceding the attr_accessor call */
+  declaredType?: string;
 }
 
 // ── Pre-allocated singletons for common return values ────────────────────────
@@ -129,6 +137,25 @@ export function routeRubyCall(calledName: string, callNode: any): RubyCallRoutin
 
   // ── attr_accessor / attr_reader / attr_writer → property definitions ───
   if (calledName === 'attr_accessor' || calledName === 'attr_reader' || calledName === 'attr_writer') {
+    // Extract YARD @return [Type] from preceding comment (e.g. `# @return [Address]`)
+    let yardType: string | undefined;
+    let sibling = callNode.previousSibling;
+    while (sibling) {
+      if (sibling.type === 'comment') {
+        const match = /@return\s+\[([^\]]+)\]/.exec(sibling.text);
+        if (match) {
+          const raw = match[1].trim();
+          // Extract simple type name: "User", "Array<User>" → "User"
+          const simple = raw.match(/^([A-Z]\w*)/);
+          if (simple) yardType = simple[1];
+          break;
+        }
+      } else if (sibling.isNamed) {
+        break; // stop at non-comment named sibling
+      }
+      sibling = sibling.previousSibling;
+    }
+
     const items: RubyPropertyItem[] = [];
     const argList = callNode.childForFieldName?.('arguments');
     for (const arg of (argList?.children ?? [])) {
@@ -138,6 +165,7 @@ export function routeRubyCall(calledName: string, callNode: any): RubyCallRoutin
           accessorType: calledName as RubyAccessorType,
           startLine: arg.startPosition.row,
           endLine: arg.endPosition.row,
+          ...(yardType ? { declaredType: yardType } : {}),
         });
       }
     }
diff --git a/gitnexus/src/core/ingestion/entry-point-scoring.ts b/gitnexus/src/core/ingestion/entry-point-scoring.ts
index b58bbe33d..58eb0d891 100644
--- a/gitnexus/src/core/ingestion/entry-point-scoring.ts
+++ b/gitnexus/src/core/ingestion/entry-point-scoring.ts
@@ -14,30 +14,33 @@ import { detectFrameworkFromPath } from './framework-detection.js';
 import { SupportedLanguages } from '../../config/supported-languages.js';
 
 // ============================================================================
-// NAME PATTERNS - All 11 supported languages
+// NAME PATTERNS - All 13 supported languages
 // ============================================================================
 
 /**
- * Common entry point naming patterns by language
- * These patterns indicate functions that are likely feature entry points
+ * Common entry point naming patterns by language.
+ * These patterns indicate functions that are likely feature entry points.
+ *
+ * Universal patterns are separated from per-language patterns so the per-language
+ * table can use `satisfies Record<SupportedLanguages, RegExp[]>` for compile-time
+ * exhaustiveness — the compiler catches any missing language entry.
  */
-const ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {
-  // Universal patterns (apply to all languages)
-  '*': [
-    /^(main|init|bootstrap|start|run|setup|configure)$/i,
-    /^handle[A-Z]/,           // handleLogin, handleSubmit
-    /^on[A-Z]/,               // onClick, onSubmit
-    /Handler$/,               // RequestHandler
-    /Controller$/,            // UserController
-    /^process[A-Z]/,          // processPayment
-    /^execute[A-Z]/,          // executeQuery
-    /^perform[A-Z]/,          // performAction
-    /^dispatch[A-Z]/,         // dispatchEvent
-    /^trigger[A-Z]/,          // triggerAction
-    /^fire[A-Z]/,             // fireEvent
-    /^emit[A-Z]/,             // emitEvent
-  ],
-  
+const UNIVERSAL_ENTRY_POINT_PATTERNS: RegExp[] = [
+  /^(main|init|bootstrap|start|run|setup|configure)$/i,
+  /^handle[A-Z]/,           // handleLogin, handleSubmit
+  /^on[A-Z]/,               // onClick, onSubmit
+  /Handler$/,               // RequestHandler
+  /Controller$/,            // UserController
+  /^process[A-Z]/,          // processPayment
+  /^execute[A-Z]/,          // executeQuery
+  /^perform[A-Z]/,          // performAction
+  /^dispatch[A-Z]/,         // dispatchEvent
+  /^trigger[A-Z]/,          // triggerAction
+  /^fire[A-Z]/,             // fireEvent
+  /^emit[A-Z]/,             // emitEvent
+];
+
+const ENTRY_POINT_PATTERNS = {
   // JavaScript/TypeScript
   [SupportedLanguages.JavaScript]: [
     /^use[A-Z]/,              // React hooks (useEffect, etc.)
@@ -62,6 +65,17 @@ const ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {
     /Service$/,               // UserService
   ],
 
+  // Kotlin
+  [SupportedLanguages.Kotlin]: [
+    /^on(Create|Start|Resume|Pause|Stop|Destroy)$/,  // Android lifecycle
+    /^do[A-Z]/,               // doGet, doPost (shared JVM Servlet pattern)
+    /^create[A-Z]/,           // Factory patterns
+    /^build[A-Z]/,            // Builder patterns
+    /ViewModel$/,             // MVVM pattern (Android)
+    /^module$/,               // Ktor module entry point
+    /Service$/,               // Service classes
+  ],
+
   // C#
   [SupportedLanguages.CSharp]: [
     /^(Get|Post|Put|Delete|Patch)/,  // ASP.NET action methods
@@ -77,7 +91,7 @@ const ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {
     /Service$/,                      // Service classes
     /^Seed/,                         // Database seeding
   ],
-  
+
   // Go
   [SupportedLanguages.Go]: [
     /Handler$/,               // http.Handler pattern
@@ -85,7 +99,7 @@ const ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {
     /^New[A-Z]/,              // Constructor pattern (returns new instance)
     /^Make[A-Z]/,             // Make functions
   ],
-  
+
   // Rust
   [SupportedLanguages.Rust]: [
     /^(get|post|put|delete)_handler$/i,
@@ -94,7 +108,7 @@ const ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {
     /^run$/,                  // run entry point
     /^spawn/,                 // Async spawn
   ],
-  
+
   // C - explicit main() boost plus common C entry point conventions
   [SupportedLanguages.C]: [
     /^main$/,                 // THE entry point
@@ -198,15 +212,15 @@ const ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {
     /^perform$/,              // Background jobs (Sidekiq, ActiveJob)
     /^execute$/,              // Command pattern
   ],
-};
+} satisfies Record<SupportedLanguages, RegExp[]>;
 
 /** Pre-computed merged patterns (universal + language-specific) to avoid per-call array allocation. */
-const MERGED_ENTRY_POINT_PATTERNS: Record<string, RegExp[]> = {};
-const UNIVERSAL_PATTERNS = ENTRY_POINT_PATTERNS['*'] || [];
-for (const [lang, patterns] of Object.entries(ENTRY_POINT_PATTERNS)) {
-  if (lang === '*') continue;
-  MERGED_ENTRY_POINT_PATTERNS[lang] = [...UNIVERSAL_PATTERNS, ...patterns];
-}
+const MERGED_ENTRY_POINT_PATTERNS = Object.fromEntries(
+  (Object.keys(ENTRY_POINT_PATTERNS) as SupportedLanguages[]).map(lang => [
+    lang,
+    [...UNIVERSAL_ENTRY_POINT_PATTERNS, ...ENTRY_POINT_PATTERNS[lang]],
+  ])
+) as Record<SupportedLanguages, RegExp[]>;
 
 // ============================================================================
 // UTILITY PATTERNS - Functions that should be penalized
@@ -295,7 +309,7 @@ export function calculateEntryPointScore(
     reasons.push('utility-pattern');
   } else {
     // Check positive patterns
-    const allPatterns = MERGED_ENTRY_POINT_PATTERNS[language] || UNIVERSAL_PATTERNS;
+    const allPatterns = MERGED_ENTRY_POINT_PATTERNS[language];
     
     if (allPatterns.some(p => p.test(name))) {
       nameMultiplier = 1.5;  // Bonus for matching entry point pattern
diff --git a/gitnexus/src/core/ingestion/filesystem-walker.ts b/gitnexus/src/core/ingestion/filesystem-walker.ts
index 7074593a0..05fad9ec1 100644
--- a/gitnexus/src/core/ingestion/filesystem-walker.ts
+++ b/gitnexus/src/core/ingestion/filesystem-walker.ts
@@ -1,7 +1,7 @@
 import fs from 'fs/promises';
 import path from 'path';
 import { glob } from 'glob';
-import { shouldIgnorePath } from '../../config/ignore-service.js';
+import { createIgnoreFilter } from '../../config/ignore-service.js';
 
 export interface FileEntry {
   path: string;
@@ -32,13 +32,14 @@ export const walkRepositoryPaths = async (
   repoPath: string,
   onProgress?: (current: number, total: number, filePath: string) => void
 ): Promise<ScannedFile[]> => {
-  const files = await glob('**/*', {
+  const ignoreFilter = await createIgnoreFilter(repoPath);
+
+  const filtered = await glob('**/*', {
     cwd: repoPath,
     nodir: true,
     dot: false,
+    ignore: ignoreFilter,
   });
-
-  const filtered = files.filter(file => !shouldIgnorePath(file));
   const entries: ScannedFile[] = [];
   let processed = 0;
   let skippedLarge = 0;
diff --git a/gitnexus/src/core/ingestion/framework-detection.ts b/gitnexus/src/core/ingestion/framework-detection.ts
index f17d93b36..37263b8dd 100644
--- a/gitnexus/src/core/ingestion/framework-detection.ts
+++ b/gitnexus/src/core/ingestion/framework-detection.ts
@@ -10,6 +10,8 @@
  * (no bonus, no penalty) - same behavior as before this feature.
  */
 
+import { SupportedLanguages } from '../../config/supported-languages.js';
+
 // ============================================================================
 // TYPES
 // ============================================================================
@@ -234,8 +236,8 @@ export function detectFrameworkFromPath(filePath: string): FrameworkHint | null
     return { framework: 'go-mvc', entryPointMultiplier: 2.5, reason: 'go-controller' };
   }
   
-  // Go main.go files (THE entry point)
-  if (p.endsWith('/main.go') || p.endsWith('/cmd/') && p.endsWith('.go')) {
+  // Go main.go files (THE entry point) — only match main.go, not arbitrary .go files under cmd/
+  if (p.endsWith('/main.go')) {
     return { framework: 'go', entryPointMultiplier: 3.0, reason: 'go-main' };
   }
   
@@ -431,25 +433,36 @@ export const FRAMEWORK_AST_PATTERNS = {
   'blazor': ['@page', '[Parameter]', '@inject'],
   'efcore': ['DbContext', 'DbSet<', 'OnModelCreating'],
   
-  // Go patterns (function signatures)
-  'go-http': ['http.Handler', 'http.HandlerFunc', 'ServeHTTP'],
+  // Go patterns (function signatures include framework types)
+  'go-http': ['http.Handler', 'http.HandlerFunc', 'ServeHTTP', 'http.ResponseWriter', 'http.Request'],
+  'gin': ['gin.Context', 'gin.Default', 'gin.New'],
+  'echo': ['echo.Context', 'echo.New'],
+  'fiber': ['fiber.Ctx', 'fiber.New', 'fiber.App'],
+  'go-grpc': ['grpc.Server', 'RegisterServer', 'pb.Unimplemented'],
 
   // PHP/Laravel
   'laravel': ['Route::get', 'Route::post', 'Route::put', 'Route::delete',
               'Route::resource', 'Route::apiResource', '#[Route('],
 
-  // Rust macros
-  'actix': ['#[get', '#[post', '#[put', '#[delete'],
-  'axum': ['Router::new'],
-  'rocket': ['#[get', '#[post'],
+  // Rust macros (proc-macro attributes in definition text)
+  'actix': ['#[get', '#[post', '#[put', '#[delete', '#[actix_web', 'HttpRequest', 'HttpResponse'],
+  'axum': ['Router::new', 'axum::extract', 'axum::routing'],
+  'rocket': ['#[get', '#[post', '#[launch', 'rocket::'],
+  'tokio': ['#[tokio::main]', '#[tokio::test]'],
+
+  // C++ patterns (Qt, Boost)
+  'qt': ['Q_OBJECT', 'Q_INVOKABLE', 'Q_PROPERTY', 'Q_SIGNALS', 'Q_SLOTS', 'Q_SIGNAL', 'Q_SLOT', 'QWidget', 'QApplication'],
 
   // Swift/iOS
-  'uikit': ['viewDidLoad', 'viewWillAppear', 'viewDidAppear', 'UIViewController'],
-  'swiftui': ['@main', 'WindowGroup', 'ContentView', '@StateObject', '@ObservedObject'],
-  'combine': ['sink', 'assign', 'Publisher', 'Subscriber'],
-};
+  'uikit': ['viewDidLoad', 'viewWillAppear', 'viewDidAppear', 'UIViewController', '@IBOutlet', '@IBAction', '@objc'],
+  'swiftui': ['@main', 'WindowGroup', 'ContentView', '@StateObject', '@ObservedObject', '@EnvironmentObject', '@Published'],
+  'vapor': ['app.get', 'app.post', 'req.content.decode', 'Vapor'],
 
-import { SupportedLanguages } from '../../config/supported-languages.js';
+  // Ruby patterns (class-level macros in definition text)
+  'rails': ['ApplicationController', 'ApplicationRecord', 'ActiveRecord::Base',
+            'before_action', 'after_action', 'has_many', 'belongs_to', 'has_one', 'validates'],
+  'sinatra': ['Sinatra::Base', 'Sinatra::Application'],
+};
 
 interface AstFrameworkPatternConfig {
   framework: string;
@@ -458,7 +471,7 @@ interface AstFrameworkPatternConfig {
   patterns: string[];
 }
 
-const AST_FRAMEWORK_PATTERNS_BY_LANGUAGE: Record<string, AstFrameworkPatternConfig[]> = {
+const AST_FRAMEWORK_PATTERNS_BY_LANGUAGE = {
   [SupportedLanguages.JavaScript]: [
     { framework: 'nestjs', entryPointMultiplier: 3.2, reason: 'nestjs-decorator', patterns: FRAMEWORK_AST_PATTERNS.nestjs },
   ],
@@ -488,7 +501,33 @@ const AST_FRAMEWORK_PATTERNS_BY_LANGUAGE: Record<string, AstFrameworkPatternConf
   [SupportedLanguages.PHP]: [
     { framework: 'laravel', entryPointMultiplier: 3.0, reason: 'php-route-attribute', patterns: FRAMEWORK_AST_PATTERNS.laravel },
   ],
-};
+  [SupportedLanguages.Go]: [
+    { framework: 'go-http', entryPointMultiplier: 2.5, reason: 'go-http-handler', patterns: FRAMEWORK_AST_PATTERNS['go-http'] },
+    { framework: 'gin', entryPointMultiplier: 3.0, reason: 'gin-handler', patterns: FRAMEWORK_AST_PATTERNS.gin },
+    { framework: 'echo', entryPointMultiplier: 3.0, reason: 'echo-handler', patterns: FRAMEWORK_AST_PATTERNS.echo },
+    { framework: 'fiber', entryPointMultiplier: 3.0, reason: 'fiber-handler', patterns: FRAMEWORK_AST_PATTERNS.fiber },
+    { framework: 'go-grpc', entryPointMultiplier: 2.8, reason: 'grpc-service', patterns: FRAMEWORK_AST_PATTERNS['go-grpc'] },
+  ],
+  [SupportedLanguages.Rust]: [
+    { framework: 'actix-web', entryPointMultiplier: 3.0, reason: 'actix-attribute', patterns: FRAMEWORK_AST_PATTERNS.actix },
+    { framework: 'axum', entryPointMultiplier: 3.0, reason: 'axum-routing', patterns: FRAMEWORK_AST_PATTERNS.axum },
+    { framework: 'rocket', entryPointMultiplier: 3.0, reason: 'rocket-attribute', patterns: FRAMEWORK_AST_PATTERNS.rocket },
+    { framework: 'tokio', entryPointMultiplier: 2.5, reason: 'tokio-runtime', patterns: FRAMEWORK_AST_PATTERNS.tokio },
+  ],
+  [SupportedLanguages.C]: [],  // C has no framework-specific AST patterns (POSIX/socket patterns are in entry-point-scoring)
+  [SupportedLanguages.CPlusPlus]: [
+    { framework: 'qt', entryPointMultiplier: 2.8, reason: 'qt-macro', patterns: FRAMEWORK_AST_PATTERNS.qt },
+  ],
+  [SupportedLanguages.Swift]: [
+    { framework: 'uikit', entryPointMultiplier: 2.5, reason: 'uikit-lifecycle', patterns: FRAMEWORK_AST_PATTERNS.uikit },
+    { framework: 'swiftui', entryPointMultiplier: 2.8, reason: 'swiftui-pattern', patterns: FRAMEWORK_AST_PATTERNS.swiftui },
+    { framework: 'vapor', entryPointMultiplier: 3.0, reason: 'vapor-routing', patterns: FRAMEWORK_AST_PATTERNS.vapor },
+  ],
+  [SupportedLanguages.Ruby]: [
+    { framework: 'rails', entryPointMultiplier: 3.0, reason: 'rails-pattern', patterns: FRAMEWORK_AST_PATTERNS.rails },
+    { framework: 'sinatra', entryPointMultiplier: 2.8, reason: 'sinatra-pattern', patterns: FRAMEWORK_AST_PATTERNS.sinatra },
+  ],
+} satisfies Record<SupportedLanguages, AstFrameworkPatternConfig[]>;
 
 /** Pre-lowercased patterns for O(1) pattern matching at runtime */
 const AST_PATTERNS_LOWERED: Record<string, Array<{ framework: string; entryPointMultiplier: number; reason: string; patterns: string[] }>> =
diff --git a/gitnexus/src/core/ingestion/import-processor.ts b/gitnexus/src/core/ingestion/import-processor.ts
index cbe5923d3..eef7543da 100644
--- a/gitnexus/src/core/ingestion/import-processor.ts
+++ b/gitnexus/src/core/ingestion/import-processor.ts
@@ -5,42 +5,15 @@ import { isLanguageAvailable, loadParser, loadLanguage } from '../tree-sitter/pa
 import { LANGUAGE_QUERIES } from './tree-sitter-queries.js';
 import { generateId } from '../../lib/utils.js';
 import { getLanguageFromFilename, isVerboseIngestionEnabled, yieldToEventLoop } from './utils.js';
-import { SupportedLanguages } from '../../config/supported-languages.js';
-import { extractNamedBindings } from './named-binding-extraction.js';
 import type { ExtractedImport } from './workers/parse-worker.js';
 import { getTreeSitterBufferSize } from './constants.js';
-import {
-  loadTsconfigPaths,
-  loadGoModulePath,
-  loadComposerConfig,
-  loadCSharpProjectConfig,
-  loadSwiftPackageConfig,
-  type SwiftPackageConfig,
-} from './language-config.js';
-import {
-  buildSuffixIndex,
-  resolveImportPath,
-  appendKotlinWildcard,
-  KOTLIN_EXTENSIONS,
-  resolveJvmWildcard,
-  resolveJvmMemberImport,
-  resolveGoPackageDir,
-  resolveGoPackage,
-  resolveCSharpImport,
-  resolveCSharpNamespaceDir,
-  resolvePhpImport,
-  resolveRustImport,
-  resolveRubyImport,
-} from './resolvers/index.js';
+import { loadImportConfigs } from './language-config.js';
+import { buildSuffixIndex } from './resolvers/index.js';
 import { callRouters } from './call-routing.js';
 import type { ResolutionContext } from './resolution-context.js';
-import type {
-  SuffixIndex,
-  TsconfigPaths,
-  GoModuleConfig,
-  CSharpProjectConfig,
-  ComposerConfig
-} from './resolvers/index.js';
+import type { SuffixIndex } from './resolvers/index.js';
+import { importResolvers, namedBindingExtractors, preprocessImportPath } from './import-resolution.js';
+import type { ImportResult, ResolveCtx, NamedBinding } from './import-resolution.js';
 
 // Re-export resolver types for consumers
 export type {
@@ -88,7 +61,7 @@ export interface ImportResolutionContext {
   allFilePaths: Set<string>;
   allFileList: string[];
   normalizedFileList: string[];
-  suffixIndex: SuffixIndex;
+  index: SuffixIndex;
   resolveCache: Map<string, string | null>;
 }
 
@@ -96,161 +69,32 @@ export function buildImportResolutionContext(allPaths: string[]): ImportResoluti
   const allFileList = allPaths;
   const normalizedFileList = allFileList.map(p => p.replace(/\\/g, '/'));
   const allFilePaths = new Set(allFileList);
-  const suffixIndex = buildSuffixIndex(normalizedFileList, allFileList);
-  return { allFilePaths, allFileList, normalizedFileList, suffixIndex, resolveCache: new Map() };
+  const index = buildSuffixIndex(normalizedFileList, allFileList);
+  return { allFilePaths, allFileList, normalizedFileList, index, resolveCache: new Map() };
 }
 
 // Config loaders extracted to ./language-config.ts (Phase 2 refactor)
-// Resolver functions are in ./resolvers/ — imported above
+// Resolver dispatch tables are in ./import-resolution.ts — imported above
 
-// ============================================================================
-// SHARED LANGUAGE DISPATCH
-// ============================================================================
+/** Create IMPORTS edge helpers that share a resolved-count tracker. */
+function createImportEdgeHelpers(graph: KnowledgeGraph, importMap: ImportMap) {
+  let totalImportsResolved = 0;
 
-/** Bundled language-specific configs loaded once per ingestion run. */
-interface LanguageConfigs {
-  tsconfigPaths: TsconfigPaths | null;
-  goModule: GoModuleConfig | null;
-  composerConfig: ComposerConfig | null;
-  swiftPackageConfig: SwiftPackageConfig | null;
-  csharpConfigs: CSharpProjectConfig[];
-}
+  const addImportGraphEdge = (filePath: string, resolvedPath: string) => {
+    const sourceId = generateId('File', filePath);
+    const targetId = generateId('File', resolvedPath);
+    const relId = generateId('IMPORTS', `${filePath}->${resolvedPath}`);
+    totalImportsResolved++;
+    graph.addRelationship({ id: relId, sourceId, targetId, type: 'IMPORTS', confidence: 1.0, reason: '' });
+  };
 
-/** Context for import path resolution (file lists, indexes, cache). */
-interface ResolveCtx {
-  allFilePaths: Set<string>;
-  allFileList: string[];
-  normalizedFileList: string[];
-  index: SuffixIndex;
-  resolveCache: Map<string, string | null>;
-}
+  const addImportEdge = (filePath: string, resolvedPath: string) => {
+    addImportGraphEdge(filePath, resolvedPath);
+    if (!importMap.has(filePath)) importMap.set(filePath, new Set());
+    importMap.get(filePath)!.add(resolvedPath);
+  };
 
-/**
- * Result of resolving an import via language-specific dispatch.
- * - 'files': resolved to one or more files → add to ImportMap
- * - 'package': resolved to a directory → add graph edges + store dirSuffix in PackageMap
- * - null: no resolution (external dependency, etc.)
- */
-type ImportResult =
-  | { kind: 'files'; files: string[] }
-  | { kind: 'package'; files: string[]; dirSuffix: string }
-  | null;
-
-/**
- * Shared language dispatch for import resolution.
- * Used by both processImports and processImportsFromExtracted.
- */
-function resolveLanguageImport(
-  filePath: string,
-  rawImportPath: string,
-  language: SupportedLanguages,
-  configs: LanguageConfigs,
-  ctx: ResolveCtx,
-): ImportResult {
-  const { allFilePaths, allFileList, normalizedFileList, index, resolveCache } = ctx;
-  const { tsconfigPaths, goModule, composerConfig, swiftPackageConfig, csharpConfigs } = configs;
-
-  // JVM languages (Java + Kotlin): handle wildcards and member imports
-  if (language === SupportedLanguages.Java || language === SupportedLanguages.Kotlin) {
-    const exts = language === SupportedLanguages.Java ? ['.java'] : KOTLIN_EXTENSIONS;
-
-    if (rawImportPath.endsWith('.*')) {
-      const matchedFiles = resolveJvmWildcard(rawImportPath, normalizedFileList, allFileList, exts, index);
-      if (matchedFiles.length === 0 && language === SupportedLanguages.Kotlin) {
-        const javaMatches = resolveJvmWildcard(rawImportPath, normalizedFileList, allFileList, ['.java'], index);
-        if (javaMatches.length > 0) return { kind: 'files', files: javaMatches };
-      }
-      if (matchedFiles.length > 0) return { kind: 'files', files: matchedFiles };
-      // Fall through to standard resolution
-    } else {
-      let memberResolved = resolveJvmMemberImport(rawImportPath, normalizedFileList, allFileList, exts, index);
-      if (!memberResolved && language === SupportedLanguages.Kotlin) {
-        memberResolved = resolveJvmMemberImport(rawImportPath, normalizedFileList, allFileList, ['.java'], index);
-      }
-      if (memberResolved) return { kind: 'files', files: [memberResolved] };
-      // Fall through to standard resolution
-    }
-  }
-
-  // Go: handle package-level imports
-  if (language === SupportedLanguages.Go && goModule && rawImportPath.startsWith(goModule.modulePath)) {
-    const pkgSuffix = resolveGoPackageDir(rawImportPath, goModule);
-    if (pkgSuffix) {
-      const pkgFiles = resolveGoPackage(rawImportPath, goModule, normalizedFileList, allFileList);
-      if (pkgFiles.length > 0) {
-        return { kind: 'package', files: pkgFiles, dirSuffix: pkgSuffix };
-      }
-    }
-    // Fall through if no files found (package might be external)
-  }
-
-  // C#: handle namespace-based imports (using directives)
-  if (language === SupportedLanguages.CSharp && csharpConfigs.length > 0) {
-    const resolvedFiles = resolveCSharpImport(rawImportPath, csharpConfigs, normalizedFileList, allFileList, index);
-    if (resolvedFiles.length > 1) {
-      const dirSuffix = resolveCSharpNamespaceDir(rawImportPath, csharpConfigs);
-      if (dirSuffix) {
-        return { kind: 'package', files: resolvedFiles, dirSuffix };
-      }
-    }
-    if (resolvedFiles.length > 0) return { kind: 'files', files: resolvedFiles };
-    return null;
-  }
-
-  // PHP: handle namespace-based imports (use statements)
-  if (language === SupportedLanguages.PHP) {
-    const resolved = resolvePhpImport(rawImportPath, composerConfig, allFilePaths, normalizedFileList, allFileList, index);
-    return resolved ? { kind: 'files', files: [resolved] } : null;
-  }
-
-  // Swift: handle module imports
-  if (language === SupportedLanguages.Swift && swiftPackageConfig) {
-    const targetDir = swiftPackageConfig.targets.get(rawImportPath);
-    if (targetDir) {
-      const dirPrefix = targetDir + '/';
-      const files: string[] = [];
-      for (let i = 0; i < normalizedFileList.length; i++) {
-        if (normalizedFileList[i].startsWith(dirPrefix) && normalizedFileList[i].endsWith('.swift')) {
-          files.push(allFileList[i]);
-        }
-      }
-      if (files.length > 0) return { kind: 'files', files };
-    }
-    return null; // External framework (Foundation, UIKit, etc.)
-  }
-
-  // Ruby: require / require_relative
-  if (language === SupportedLanguages.Ruby) {
-    const resolved = resolveRubyImport(rawImportPath, normalizedFileList, allFileList, index);
-    return resolved ? { kind: 'files', files: [resolved] } : null;
-  }
-
-  // Rust: expand top-level grouped imports: use {crate::a, crate::b}
-  if (language === SupportedLanguages.Rust && rawImportPath.startsWith('{') && rawImportPath.endsWith('}')) {
-    const inner = rawImportPath.slice(1, -1);
-    const parts = inner.split(',').map(p => p.trim()).filter(Boolean);
-    const resolved: string[] = [];
-    for (const part of parts) {
-      const r = resolveRustImport(filePath, part, allFilePaths);
-      if (r) resolved.push(r);
-    }
-    return resolved.length > 0 ? { kind: 'files', files: resolved } : null;
-  }
-
-  // Standard single-file resolution
-  const resolvedPath = resolveImportPath(
-    filePath,
-    rawImportPath,
-    allFilePaths,
-    allFileList,
-    normalizedFileList,
-    resolveCache,
-    language,
-    tsconfigPaths,
-    index,
-  );
-
-  return resolvedPath ? { kind: 'files', files: [resolvedPath] } : null;
+  return { addImportEdge, addImportGraphEdge, getResolvedCount: () => totalImportsResolved };
 }
 
 /**
@@ -265,7 +109,7 @@ function applyImportResult(
   packageMap: PackageMap | undefined,
   addImportEdge: (from: string, to: string) => void,
   addImportGraphEdge: (from: string, to: string) => void,
-  namedBindings?: { local: string; exported: string }[],
+  namedBindings?: NamedBinding[],
   namedImportMap?: NamedImportMap,
 ): void {
   if (!result) return;
@@ -284,13 +128,44 @@ function applyImportResult(
       addImportEdge(filePath, resolvedFile);
     }
 
-    // Record named bindings for precise Tier 2a resolution
-    if (namedBindings && namedImportMap && files.length === 1) {
-      const resolvedFile = files[0];
+    // Record named bindings for precise Tier 2a resolution.
+    // If the same local name is imported from multiple files (e.g., Java static imports
+    // of overloaded methods), remove the entry so resolution falls through to Tier 2a
+    // import-scoped which sees all candidates and can apply arity narrowing.
+    if (namedBindings && namedImportMap) {
       if (!namedImportMap.has(filePath)) namedImportMap.set(filePath, new Map());
       const fileBindings = namedImportMap.get(filePath)!;
-      for (const binding of namedBindings) {
-        fileBindings.set(binding.local, { sourcePath: resolvedFile, exportedName: binding.exported });
+
+      if (files.length === 1) {
+        const resolvedFile = files[0];
+        for (const binding of namedBindings) {
+          const existing = fileBindings.get(binding.local);
+          if (existing && existing.sourcePath !== resolvedFile) {
+            fileBindings.delete(binding.local);
+          } else {
+            fileBindings.set(binding.local, { sourcePath: resolvedFile, exportedName: binding.exported });
+          }
+        }
+      } else {
+        // Multi-file resolution (e.g., Rust `use crate::models::{User, Repo}`).
+        // Match each binding to a resolved file by comparing the lowercase binding name
+        // to the file's basename (without extension). If no match, skip the binding.
+        for (const binding of namedBindings) {
+          const lowerName = binding.exported.toLowerCase();
+          const matchedFile = files.find(f => {
+            const base = f.replace(/\\/g, '/').split('/').pop() ?? '';
+            const nameWithoutExt = base.substring(0, base.lastIndexOf('.')).toLowerCase();
+            return nameWithoutExt === lowerName;
+          });
+          if (matchedFile) {
+            const existing = fileBindings.get(binding.local);
+            if (existing && existing.sourcePath !== matchedFile) {
+              fileBindings.delete(binding.local);
+            } else {
+              fileBindings.set(binding.local, { sourcePath: matchedFile, exportedName: binding.exported });
+            }
+          }
+        }
       }
     }
   }
@@ -326,46 +201,11 @@ export const processImports = async (
 
   // Track import statistics
   let totalImportsFound = 0;
-  let totalImportsResolved = 0;
 
   // Load language-specific configs once before the file loop
-  const effectiveRoot = repoRoot || '';
-  const configs: LanguageConfigs = {
-    tsconfigPaths: await loadTsconfigPaths(effectiveRoot),
-    goModule: await loadGoModulePath(effectiveRoot),
-    composerConfig: await loadComposerConfig(effectiveRoot),
-    swiftPackageConfig: await loadSwiftPackageConfig(effectiveRoot),
-    csharpConfigs: await loadCSharpProjectConfig(effectiveRoot),
-  };
-  const resolveCtx: ResolveCtx = { allFilePaths, allFileList, normalizedFileList, index, resolveCache };
-
-  // Helper: add an IMPORTS edge to the graph only (no ImportMap update)
-  const addImportGraphEdge = (filePath: string, resolvedPath: string) => {
-    const sourceId = generateId('File', filePath);
-    const targetId = generateId('File', resolvedPath);
-    const relId = generateId('IMPORTS', `${filePath}->${resolvedPath}`);
-
-    totalImportsResolved++;
-
-    graph.addRelationship({
-      id: relId,
-      sourceId,
-      targetId,
-      type: 'IMPORTS',
-      confidence: 1.0,
-      reason: '',
-    });
-  };
-
-  // Helper: add an IMPORTS edge + update import map
-  const addImportEdge = (filePath: string, resolvedPath: string) => {
-    addImportGraphEdge(filePath, resolvedPath);
-
-    if (!importMap.has(filePath)) {
-      importMap.set(filePath, new Set());
-    }
-    importMap.get(filePath)!.add(resolvedPath);
-  };
+  const configs = await loadImportConfigs(repoRoot || '');
+  const resolveCtx: ResolveCtx = { allFilePaths, allFileList, normalizedFileList, index, resolveCache, configs };
+  const { addImportEdge, addImportGraphEdge, getResolvedCount } = createImportEdgeHelpers(graph, importMap);
 
   for (let i = 0; i < files.length; i++) {
     const file = files[i];
@@ -438,14 +278,13 @@ export const processImports = async (
           return;
         }
 
-        // Clean path (remove quotes and angle brackets for C/C++ includes)
-        const rawImportPath = language === SupportedLanguages.Kotlin
-          ? appendKotlinWildcard(sourceNode.text.replace(/['"<>]/g, ''), captureMap['import'])
-          : sourceNode.text.replace(/['"<>]/g, '');
+        const rawImportPath = preprocessImportPath(sourceNode.text, captureMap['import'], language);
+        if (!rawImportPath) return;
         totalImportsFound++;
 
-        const result = resolveLanguageImport(file.path, rawImportPath, language, configs, resolveCtx);
-        const bindings = namedImportMap ? extractNamedBindings(captureMap['import'], language) : undefined;
+        const result = importResolvers[language](rawImportPath, file.path, resolveCtx);
+        const extractor = namedBindingExtractors[language];
+        const bindings = namedImportMap && extractor ? extractor(captureMap['import']) : undefined;
         applyImportResult(result, file.path, importMap, packageMap, addImportEdge, addImportGraphEdge, bindings, namedImportMap);
       }
 
@@ -457,7 +296,7 @@ export const processImports = async (
           const routed = callRouter(callNameNode.text, captureMap['call']);
           if (routed && routed.kind === 'import') {
             totalImportsFound++;
-            const result = resolveLanguageImport(file.path, routed.importPath, language, configs, resolveCtx);
+            const result = importResolvers[language](routed.importPath, file.path, resolveCtx);
             applyImportResult(result, file.path, importMap, packageMap, addImportEdge, addImportGraphEdge);
           }
         }
@@ -476,7 +315,7 @@ export const processImports = async (
   }
 
   if (isDev) {
-    console.log(`📊 Import processing complete: ${totalImportsResolved}/${totalImportsFound} imports resolved to graph edges`);
+    console.log(`📊 Import processing complete: ${getResolvedCount()}/${totalImportsFound} imports resolved to graph edges`);
   }
 };
 
@@ -497,47 +336,13 @@ export const processImportsFromExtracted = async (
   const packageMap = ctx.packageMap;
   const namedImportMap = ctx.namedImportMap;
   const importCtx = prebuiltCtx ?? buildImportResolutionContext(files.map(f => f.path));
-  const { allFilePaths, allFileList, normalizedFileList, suffixIndex: index, resolveCache } = importCtx;
+  const { allFilePaths, allFileList, normalizedFileList, index, resolveCache } = importCtx;
 
   let totalImportsFound = 0;
-  let totalImportsResolved = 0;
 
-  const effectiveRoot = repoRoot || '';
-  const configs: LanguageConfigs = {
-    tsconfigPaths: await loadTsconfigPaths(effectiveRoot),
-    goModule: await loadGoModulePath(effectiveRoot),
-    composerConfig: await loadComposerConfig(effectiveRoot),
-    swiftPackageConfig: await loadSwiftPackageConfig(effectiveRoot),
-    csharpConfigs: await loadCSharpProjectConfig(effectiveRoot),
-  };
-  const resolveCtx: ResolveCtx = { allFilePaths, allFileList, normalizedFileList, index, resolveCache };
-
-  // Helper: add an IMPORTS edge to the graph only (no ImportMap update)
-  const addImportGraphEdge = (filePath: string, resolvedPath: string) => {
-    const sourceId = generateId('File', filePath);
-    const targetId = generateId('File', resolvedPath);
-    const relId = generateId('IMPORTS', `${filePath}->${resolvedPath}`);
-
-    totalImportsResolved++;
-
-    graph.addRelationship({
-      id: relId,
-      sourceId,
-      targetId,
-      type: 'IMPORTS',
-      confidence: 1.0,
-      reason: '',
-    });
-  };
-
-  const addImportEdge = (filePath: string, resolvedPath: string) => {
-    addImportGraphEdge(filePath, resolvedPath);
-
-    if (!importMap.has(filePath)) {
-      importMap.set(filePath, new Set());
-    }
-    importMap.get(filePath)!.add(resolvedPath);
-  };
+  const configs = await loadImportConfigs(repoRoot || '');
+  const resolveCtx: ResolveCtx = { allFilePaths, allFileList, normalizedFileList, index, resolveCache, configs };
+  const { addImportEdge, addImportGraphEdge, getResolvedCount } = createImportEdgeHelpers(graph, importMap);
 
   // Group by file for progress reporting (users see file count, not import count)
   const importsByFile = new Map<string, ExtractedImport[]>();
@@ -563,7 +368,7 @@ export const processImportsFromExtracted = async (
     for (const imp of fileImports) {
       totalImportsFound++;
 
-      const result = resolveLanguageImport(filePath, imp.rawImportPath, imp.language, configs, resolveCtx);
+      const result = importResolvers[imp.language](imp.rawImportPath, filePath, resolveCtx);
       applyImportResult(result, filePath, importMap, packageMap, addImportEdge, addImportGraphEdge, imp.namedBindings, namedImportMap);
     }
   }
@@ -571,6 +376,6 @@ export const processImportsFromExtracted = async (
   onProgress?.(totalFiles, totalFiles);
 
   if (isDev) {
-    console.log(`📊 Import processing (fast path): ${totalImportsResolved}/${totalImportsFound} imports resolved to graph edges`);
+    console.log(`📊 Import processing (fast path): ${getResolvedCount()}/${totalImportsFound} imports resolved to graph edges`);
   }
 };
diff --git a/gitnexus/src/core/ingestion/import-resolution.ts b/gitnexus/src/core/ingestion/import-resolution.ts
new file mode 100644
index 000000000..1dc30d205
--- /dev/null
+++ b/gitnexus/src/core/ingestion/import-resolution.ts
@@ -0,0 +1,383 @@
+/**
+ * Import Resolution Dispatch
+ *
+ * Per-language dispatch table for import resolution and named binding extraction.
+ * Replaces the 120-line if-chain in resolveLanguageImport() and the 7-branch
+ * dispatch in extractNamedBindings() with a single table lookup each.
+ *
+ * Follows the existing ExportChecker / CallRouter pattern:
+ *   - Function aliases (not interfaces) to avoid megamorphic inline-cache issues
+ *   - `satisfies Record<SupportedLanguages, ...>` for compile-time exhaustiveness
+ *   - Const dispatch table — configs are accessed via ctx.configs at call time
+ */
+
+import { SupportedLanguages } from '../../config/supported-languages.js';
+import type { SyntaxNode } from './utils.js';
+import {
+  KOTLIN_EXTENSIONS,
+  appendKotlinWildcard,
+  resolveJvmWildcard,
+  resolveJvmMemberImport,
+  resolveGoPackageDir,
+  resolveGoPackage,
+  resolveCSharpImport as resolveCSharpImportHelper,
+  resolveCSharpNamespaceDir,
+  resolvePhpImport as resolvePhpImportHelper,
+  resolveRustImport as resolveRustImportHelper,
+  resolveRubyImport as resolveRubyImportHelper,
+  resolvePythonImport as resolvePythonImportHelper,
+  resolveImportPath,
+} from './resolvers/index.js';
+import type {
+  SuffixIndex,
+  TsconfigPaths,
+  GoModuleConfig,
+  CSharpProjectConfig,
+  ComposerConfig,
+} from './resolvers/index.js';
+import type { SwiftPackageConfig } from './language-config.js';
+import {
+  extractTsNamedBindings,
+  extractPythonNamedBindings,
+  extractKotlinNamedBindings,
+  extractRustNamedBindings,
+  extractPhpNamedBindings,
+  extractCsharpNamedBindings,
+  extractJavaNamedBindings,
+} from './named-binding-extraction.js';
+import type { ImportResolutionContext } from './import-processor.js';
+
+// ============================================================================
+// Types
+// ============================================================================
+
+/**
+ * Result of resolving an import via language-specific dispatch.
+ * - 'files': resolved to one or more files -> add to ImportMap
+ * - 'package': resolved to a directory -> add graph edges + store dirSuffix in PackageMap
+ * - null: no resolution (external dependency, etc.)
+ */
+export type ImportResult =
+  | { kind: 'files'; files: string[] }
+  | { kind: 'package'; files: string[]; dirSuffix: string }
+  | null;
+
+/** Bundled language-specific configs loaded once per ingestion run. */
+export interface ImportConfigs {
+  tsconfigPaths: TsconfigPaths | null;
+  goModule: GoModuleConfig | null;
+  composerConfig: ComposerConfig | null;
+  swiftPackageConfig: SwiftPackageConfig | null;
+  csharpConfigs: CSharpProjectConfig[];
+}
+
+/** Full context for import resolution: file lookups + language configs. */
+export interface ResolveCtx extends ImportResolutionContext {
+  configs: ImportConfigs;
+}
+
+/** Per-language import resolver -- function alias matching ExportChecker/CallRouter pattern. */
+export type ImportResolverFn = (
+  rawImportPath: string,
+  filePath: string,
+  resolveCtx: ResolveCtx,
+) => ImportResult;
+
+/** A single named import binding: local name in the importing file and exported name from the source. */
+export interface NamedBinding { local: string; exported: string }
+
+/** Per-language named binding extractor -- optional (returns undefined if language has no named imports). */
+type NamedBindingExtractorFn = (importNode: SyntaxNode) => NamedBinding[] | undefined;
+
+// ============================================================================
+// Import path preprocessing
+// ============================================================================
+
+/**
+ * Clean and preprocess a raw import source text into a resolved import path.
+ * Strips quotes/angle brackets (universal) and applies language-specific
+ * transformations (currently only Kotlin wildcard import detection).
+ */
+export function preprocessImportPath(
+  sourceText: string,
+  importNode: SyntaxNode,
+  language: SupportedLanguages,
+): string | null {
+  const cleaned = sourceText.replace(/['"<>]/g, '');
+  // Defense-in-depth: reject null bytes and control characters (matches Ruby call-routing pattern)
+  if (!cleaned || cleaned.length > 2048 || /[\x00-\x1f]/.test(cleaned)) return null;
+  if (language === SupportedLanguages.Kotlin) {
+    return appendKotlinWildcard(cleaned, importNode);
+  }
+  return cleaned;
+}
+
+// ============================================================================
+// Per-language resolver functions
+// ============================================================================
+
+/**
+ * Standard single-file resolution (TS/JS/C/C++ and fallback for other languages).
+ * Handles relative imports, tsconfig path aliases, and suffix matching.
+ */
+function resolveStandard(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+  language: SupportedLanguages,
+): ImportResult {
+  const resolvedPath = resolveImportPath(
+    filePath,
+    rawImportPath,
+    ctx.allFilePaths,
+    ctx.allFileList,
+    ctx.normalizedFileList,
+    ctx.resolveCache,
+    language,
+    ctx.configs.tsconfigPaths,
+    ctx.index,
+  );
+  return resolvedPath ? { kind: 'files', files: [resolvedPath] } : null;
+}
+
+/** Java: JVM wildcard -> member import -> standard fallthrough */
+function resolveJavaImport(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  if (rawImportPath.endsWith('.*')) {
+    const matchedFiles = resolveJvmWildcard(rawImportPath, ctx.normalizedFileList, ctx.allFileList, ['.java'], ctx.index);
+    if (matchedFiles.length > 0) return { kind: 'files', files: matchedFiles };
+  } else {
+    const memberResolved = resolveJvmMemberImport(rawImportPath, ctx.normalizedFileList, ctx.allFileList, ['.java'], ctx.index);
+    if (memberResolved) return { kind: 'files', files: [memberResolved] };
+  }
+  return resolveStandard(rawImportPath, filePath, ctx, SupportedLanguages.Java);
+}
+
+/**
+ * Kotlin: JVM wildcard/member with Java-interop fallback -> top-level function imports -> standard.
+ * Kotlin can import from .kt/.kts files OR from .java files (Java interop).
+ */
+function resolveKotlinImport(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  if (rawImportPath.endsWith('.*')) {
+    const matchedFiles = resolveJvmWildcard(rawImportPath, ctx.normalizedFileList, ctx.allFileList, KOTLIN_EXTENSIONS, ctx.index);
+    if (matchedFiles.length === 0) {
+      const javaMatches = resolveJvmWildcard(rawImportPath, ctx.normalizedFileList, ctx.allFileList, ['.java'], ctx.index);
+      if (javaMatches.length > 0) return { kind: 'files', files: javaMatches };
+    }
+    if (matchedFiles.length > 0) return { kind: 'files', files: matchedFiles };
+  } else {
+    let memberResolved = resolveJvmMemberImport(rawImportPath, ctx.normalizedFileList, ctx.allFileList, KOTLIN_EXTENSIONS, ctx.index);
+    if (!memberResolved) {
+      memberResolved = resolveJvmMemberImport(rawImportPath, ctx.normalizedFileList, ctx.allFileList, ['.java'], ctx.index);
+    }
+    if (memberResolved) return { kind: 'files', files: [memberResolved] };
+
+    // Kotlin: top-level function imports (e.g. import models.getUser) have only 2 segments,
+    // which resolveJvmMemberImport skips (requires >=3). Fall back to package-directory scan
+    // for lowercase last segments (function/property imports). Uppercase last segments
+    // (class imports like models.User) fall through to standard suffix resolution.
+    const segments = rawImportPath.split('.');
+    const lastSeg = segments[segments.length - 1];
+    if (segments.length >= 2 && lastSeg[0] && lastSeg[0] === lastSeg[0].toLowerCase()) {
+      const pkgWildcard = segments.slice(0, -1).join('.') + '.*';
+      let dirFiles = resolveJvmWildcard(pkgWildcard, ctx.normalizedFileList, ctx.allFileList, KOTLIN_EXTENSIONS, ctx.index);
+      if (dirFiles.length === 0) {
+        dirFiles = resolveJvmWildcard(pkgWildcard, ctx.normalizedFileList, ctx.allFileList, ['.java'], ctx.index);
+      }
+      if (dirFiles.length > 0) return { kind: 'files', files: dirFiles };
+    }
+  }
+  return resolveStandard(rawImportPath, filePath, ctx, SupportedLanguages.Kotlin);
+}
+
+/** Go: package-level imports via go.mod module path. */
+function resolveGoImport(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  const goModule = ctx.configs.goModule;
+  if (goModule && rawImportPath.startsWith(goModule.modulePath)) {
+    const pkgSuffix = resolveGoPackageDir(rawImportPath, goModule);
+    if (pkgSuffix) {
+      const pkgFiles = resolveGoPackage(rawImportPath, goModule, ctx.normalizedFileList, ctx.allFileList);
+      if (pkgFiles.length > 0) {
+        return { kind: 'package', files: pkgFiles, dirSuffix: pkgSuffix };
+      }
+    }
+    // Fall through if no files found (package might be external)
+  }
+  return resolveStandard(rawImportPath, filePath, ctx, SupportedLanguages.Go);
+}
+
+/** C#: namespace-based resolution via .csproj configs, with suffix-match fallback. */
+function resolveCSharpImportDispatch(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  const csharpConfigs = ctx.configs.csharpConfigs;
+  if (csharpConfigs.length > 0) {
+    const resolvedFiles = resolveCSharpImportHelper(rawImportPath, csharpConfigs, ctx.normalizedFileList, ctx.allFileList, ctx.index);
+    if (resolvedFiles.length > 1) {
+      const dirSuffix = resolveCSharpNamespaceDir(rawImportPath, csharpConfigs);
+      if (dirSuffix) {
+        return { kind: 'package', files: resolvedFiles, dirSuffix };
+      }
+    }
+    if (resolvedFiles.length > 0) return { kind: 'files', files: resolvedFiles };
+  }
+  return resolveStandard(rawImportPath, filePath, ctx, SupportedLanguages.CSharp);
+}
+
+/** PHP: namespace-based resolution via composer.json PSR-4. */
+function resolvePhpImportDispatch(
+  rawImportPath: string,
+  _filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  const resolved = resolvePhpImportHelper(rawImportPath, ctx.configs.composerConfig, ctx.allFilePaths, ctx.normalizedFileList, ctx.allFileList, ctx.index);
+  return resolved ? { kind: 'files', files: [resolved] } : null;
+}
+
+/** Swift: module imports via Package.swift target map. */
+function resolveSwiftImportDispatch(
+  rawImportPath: string,
+  _filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  const swiftPackageConfig = ctx.configs.swiftPackageConfig;
+  if (swiftPackageConfig) {
+    const targetDir = swiftPackageConfig.targets.get(rawImportPath);
+    if (targetDir) {
+      const dirPrefix = targetDir + '/';
+      const files: string[] = [];
+      for (let i = 0; i < ctx.normalizedFileList.length; i++) {
+        if (ctx.normalizedFileList[i].startsWith(dirPrefix) && ctx.normalizedFileList[i].endsWith('.swift')) {
+          files.push(ctx.allFileList[i]);
+        }
+      }
+      if (files.length > 0) return { kind: 'files', files };
+    }
+  }
+  return null; // External framework (Foundation, UIKit, etc.)
+}
+
+/**
+ * Python: relative imports (PEP 328) + proximity-based bare imports.
+ * Falls through to standard suffix resolution when proximity finds no match.
+ */
+function resolvePythonImportDispatch(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  const resolved = resolvePythonImportHelper(filePath, rawImportPath, ctx.allFilePaths);
+  if (resolved) return { kind: 'files', files: [resolved] };
+  if (rawImportPath.startsWith('.')) return null; // relative but unresolved -- don't suffix-match
+  return resolveStandard(rawImportPath, filePath, ctx, SupportedLanguages.Python);
+}
+
+/** Ruby: require / require_relative. */
+function resolveRubyImportDispatch(
+  rawImportPath: string,
+  _filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  const resolved = resolveRubyImportHelper(rawImportPath, ctx.normalizedFileList, ctx.allFileList, ctx.index);
+  return resolved ? { kind: 'files', files: [resolved] } : null;
+}
+
+/** Rust: expand grouped imports: use {crate::a, crate::b} and use crate::models::{User, Repo}. */
+function resolveRustImportDispatch(
+  rawImportPath: string,
+  filePath: string,
+  ctx: ResolveCtx,
+): ImportResult {
+  // Top-level grouped: use {crate::a, crate::b}
+  if (rawImportPath.startsWith('{') && rawImportPath.endsWith('}')) {
+    const inner = rawImportPath.slice(1, -1);
+    const parts = inner.split(',').map(p => p.trim()).filter(Boolean);
+    const resolved: string[] = [];
+    for (const part of parts) {
+      const r = resolveRustImportHelper(filePath, part, ctx.allFilePaths);
+      if (r) resolved.push(r);
+    }
+    return resolved.length > 0 ? { kind: 'files', files: resolved } : null;
+  }
+
+  // Scoped grouped: use crate::models::{User, Repo}
+  const braceIdx = rawImportPath.indexOf('::{');
+  if (braceIdx !== -1 && rawImportPath.endsWith('}')) {
+    const pathPrefix = rawImportPath.substring(0, braceIdx);
+    const braceContent = rawImportPath.substring(braceIdx + 3, rawImportPath.length - 1);
+    const items = braceContent.split(',').map(s => s.trim()).filter(Boolean);
+    const resolved: string[] = [];
+    for (const item of items) {
+      // Handle `use crate::models::{User, Repo as R}` — strip alias for resolution
+      const itemName = item.includes(' as ') ? item.split(' as ')[0].trim() : item;
+      const r = resolveRustImportHelper(filePath, `${pathPrefix}::${itemName}`, ctx.allFilePaths);
+      if (r) resolved.push(r);
+    }
+    if (resolved.length > 0) return { kind: 'files', files: resolved };
+    // Fallback: resolve the prefix path itself (e.g. crate::models -> models.rs)
+    const prefixResult = resolveRustImportHelper(filePath, pathPrefix, ctx.allFilePaths);
+    if (prefixResult) return { kind: 'files', files: [prefixResult] };
+  }
+
+  return resolveStandard(rawImportPath, filePath, ctx, SupportedLanguages.Rust);
+}
+
+// ============================================================================
+// Dispatch tables
+// ============================================================================
+
+/**
+ * Per-language import resolver dispatch table.
+ * Configs are accessed via ctx.configs at call time — no factory closure needed.
+ * Each resolver encapsulates the full resolution flow for its language, including
+ * fallthrough to standard resolution where appropriate.
+ */
+export const importResolvers = {
+  [SupportedLanguages.JavaScript]: (raw, fp, ctx) => resolveStandard(raw, fp, ctx, SupportedLanguages.JavaScript),
+  [SupportedLanguages.TypeScript]: (raw, fp, ctx) => resolveStandard(raw, fp, ctx, SupportedLanguages.TypeScript),
+  [SupportedLanguages.Python]: (raw, fp, ctx) => resolvePythonImportDispatch(raw, fp, ctx),
+  [SupportedLanguages.Java]: (raw, fp, ctx) => resolveJavaImport(raw, fp, ctx),
+  [SupportedLanguages.C]: (raw, fp, ctx) => resolveStandard(raw, fp, ctx, SupportedLanguages.C),
+  [SupportedLanguages.CPlusPlus]: (raw, fp, ctx) => resolveStandard(raw, fp, ctx, SupportedLanguages.CPlusPlus),
+  [SupportedLanguages.CSharp]: (raw, fp, ctx) => resolveCSharpImportDispatch(raw, fp, ctx),
+  [SupportedLanguages.Go]: (raw, fp, ctx) => resolveGoImport(raw, fp, ctx),
+  [SupportedLanguages.Ruby]: (raw, fp, ctx) => resolveRubyImportDispatch(raw, fp, ctx),
+  [SupportedLanguages.Rust]: (raw, fp, ctx) => resolveRustImportDispatch(raw, fp, ctx),
+  [SupportedLanguages.PHP]: (raw, fp, ctx) => resolvePhpImportDispatch(raw, fp, ctx),
+  [SupportedLanguages.Kotlin]: (raw, fp, ctx) => resolveKotlinImport(raw, fp, ctx),
+  [SupportedLanguages.Swift]: (raw, fp, ctx) => resolveSwiftImportDispatch(raw, fp, ctx),
+} satisfies Record<SupportedLanguages, ImportResolverFn>;
+
+/**
+ * Per-language named binding extractor dispatch table.
+ * Languages with whole-module import semantics (Go, Ruby, C/C++, Swift) return undefined --
+ * their bindings are synthesized post-parse by synthesizeWildcardImportBindings() in pipeline.ts.
+ */
+export const namedBindingExtractors = {
+  [SupportedLanguages.JavaScript]: extractTsNamedBindings,
+  [SupportedLanguages.TypeScript]: extractTsNamedBindings,
+  [SupportedLanguages.Python]: extractPythonNamedBindings,
+  [SupportedLanguages.Java]: extractJavaNamedBindings,
+  [SupportedLanguages.C]: undefined,
+  [SupportedLanguages.CPlusPlus]: undefined,
+  [SupportedLanguages.CSharp]: extractCsharpNamedBindings,
+  [SupportedLanguages.Go]: undefined,
+  [SupportedLanguages.Ruby]: undefined,
+  [SupportedLanguages.Rust]: extractRustNamedBindings,
+  [SupportedLanguages.PHP]: extractPhpNamedBindings,
+  [SupportedLanguages.Kotlin]: extractKotlinNamedBindings,
+  [SupportedLanguages.Swift]: undefined,
+} satisfies Record<SupportedLanguages, NamedBindingExtractorFn | undefined>;
diff --git a/gitnexus/src/core/ingestion/language-config.ts b/gitnexus/src/core/ingestion/language-config.ts
index cd64ca10d..2bb56d8f8 100644
--- a/gitnexus/src/core/ingestion/language-config.ts
+++ b/gitnexus/src/core/ingestion/language-config.ts
@@ -1,5 +1,6 @@
 import fs from 'fs/promises';
 import path from 'path';
+import type { ImportConfigs } from './import-resolution.js';
 
 const isDev = process.env.NODE_ENV === 'development';
 
@@ -213,3 +214,18 @@ export async function loadSwiftPackageConfig(repoRoot: string): Promise<SwiftPac
   }
   return null;
 }
+
+// ============================================================================
+// BUNDLED CONFIG LOADER
+// ============================================================================
+
+/** Load all language-specific configs once for an ingestion run. */
+export async function loadImportConfigs(repoRoot: string): Promise<ImportConfigs> {
+  return {
+    tsconfigPaths: await loadTsconfigPaths(repoRoot),
+    goModule: await loadGoModulePath(repoRoot),
+    composerConfig: await loadComposerConfig(repoRoot),
+    swiftPackageConfig: await loadSwiftPackageConfig(repoRoot),
+    csharpConfigs: await loadCSharpProjectConfig(repoRoot),
+  };
+}
diff --git a/gitnexus/src/core/ingestion/markdown-processor.ts b/gitnexus/src/core/ingestion/markdown-processor.ts
new file mode 100644
index 000000000..d894cee43
--- /dev/null
+++ b/gitnexus/src/core/ingestion/markdown-processor.ts
@@ -0,0 +1,157 @@
+/**
+ * Markdown Processor
+ *
+ * Extracts structure from .md files using regex (no tree-sitter dependency).
+ * Creates Section nodes for headings with hierarchy, and IMPORTS edges for
+ * cross-file links.
+ */
+
+import path from 'node:path';
+import { generateId } from '../../lib/utils.js';
+import { KnowledgeGraph, GraphNode, GraphRelationship } from '../graph/types.js';
+
+const HEADING_RE = /^(#{1,6})\s+(.+)$/;
+const LINK_RE = /\[([^\]]*)\]\(([^)]+)\)/g;
+const MD_EXTENSIONS = new Set(['.md', '.mdx']);
+
+interface MdFile {
+  path: string;
+  content: string;
+}
+
+export const processMarkdown = (
+  graph: KnowledgeGraph,
+  files: MdFile[],
+  allPathSet: Set<string>,
+): { sections: number; links: number } => {
+  let totalSections = 0;
+  let totalLinks = 0;
+
+  for (const file of files) {
+    const ext = path.extname(file.path).toLowerCase();
+    if (!MD_EXTENSIONS.has(ext)) continue;
+
+    const fileNodeId = generateId('File', file.path);
+    // Skip if file node doesn't exist (shouldn't happen, structure-processor creates it)
+    if (!graph.getNode(fileNodeId)) continue;
+
+    const lines = file.content.split('\n');
+
+    // --- Extract headings and build hierarchy ---
+    // First pass: collect all heading positions so we can compute endLine spans
+    const headings: { level: number; heading: string; lineNum: number }[] = [];
+
+    for (let i = 0; i < lines.length; i++) {
+      const match = lines[i].match(HEADING_RE);
+      if (!match) continue;
+
+      headings.push({
+        level: match[1].length,
+        heading: match[2].trim(),
+        lineNum: i + 1, // 1-indexed
+      });
+    }
+
+    // Second pass: create nodes with proper endLine spans
+    const sectionStack: { level: number; id: string }[] = [];
+
+    for (let h = 0; h < headings.length; h++) {
+      const { level, heading, lineNum } = headings[h];
+
+      // endLine = line before next heading at same or higher level, or EOF
+      let endLine = lines.length;
+      for (let j = h + 1; j < headings.length; j++) {
+        if (headings[j].level <= level) {
+          endLine = headings[j].lineNum - 1;
+          break;
+        }
+      }
+
+      const sectionId = generateId('Section', `${file.path}:L${lineNum}:${heading}`);
+
+      const node: GraphNode = {
+        id: sectionId,
+        label: 'Section',
+        properties: {
+          name: heading,
+          filePath: file.path,
+          startLine: lineNum,
+          endLine,
+          level,
+          description: `h${level}`,
+        },
+      };
+      graph.addNode(node);
+      totalSections++;
+
+      // Find parent: pop stack until we find a level strictly less than current
+      while (sectionStack.length > 0 && sectionStack[sectionStack.length - 1].level >= level) {
+        sectionStack.pop();
+      }
+
+      const parentId = sectionStack.length > 0
+        ? sectionStack[sectionStack.length - 1].id
+        : fileNodeId;
+
+      graph.addRelationship({
+        id: generateId('CONTAINS', `${parentId}->${sectionId}`),
+        type: 'CONTAINS',
+        sourceId: parentId,
+        targetId: sectionId,
+        confidence: 1.0,
+        reason: 'markdown-heading',
+      });
+
+      sectionStack.push({ level, id: sectionId });
+    }
+
+    // --- Extract links to other files in the repo ---
+    const fileDir = path.dirname(file.path);
+    const seenLinks = new Set<string>();
+    let linkMatch: RegExpExecArray | null;
+    LINK_RE.lastIndex = 0;
+
+    while ((linkMatch = LINK_RE.exec(file.content)) !== null) {
+      const href = linkMatch[2];
+
+      // Skip external URLs, anchors, and mailto
+      if (href.startsWith('http://') || href.startsWith('https://') ||
+          href.startsWith('#') || href.startsWith('mailto:')) {
+        continue;
+      }
+
+      // Strip anchor fragments from local links
+      const cleanHref = href.split('#')[0];
+      if (!cleanHref) continue;
+
+      // Resolve relative to the file's directory, then normalize
+      const resolved = path.posix.normalize(path.posix.join(fileDir, cleanHref));
+
+      if (allPathSet.has(resolved)) {
+        const targetFileId = generateId('File', resolved);
+
+        // Skip if target file node doesn't exist
+        if (!graph.getNode(targetFileId)) continue;
+
+        // Dedup: skip if we've already linked this file pair
+        const linkKey = `${fileNodeId}->${targetFileId}`;
+        if (seenLinks.has(linkKey)) continue;
+        seenLinks.add(linkKey);
+
+        const relId = generateId('IMPORTS', linkKey);
+
+        graph.addRelationship({
+          id: relId,
+          type: 'IMPORTS',
+          sourceId: fileNodeId,
+          targetId: targetFileId,
+          confidence: 0.8,
+          reason: 'markdown-link',
+        });
+        totalLinks++;
+      }
+    }
+  }
+
+  return { sections: totalSections, links: totalLinks };
+};
diff --git a/gitnexus/src/core/ingestion/named-binding-extraction.ts b/gitnexus/src/core/ingestion/named-binding-extraction.ts
index a4a56fb27..760155bde 100644
--- a/gitnexus/src/core/ingestion/named-binding-extraction.ts
+++ b/gitnexus/src/core/ingestion/named-binding-extraction.ts
@@ -1,6 +1,8 @@
-import { SupportedLanguages } from '../../config/supported-languages.js';
 import type { SymbolTable, SymbolDefinition } from './symbol-table.js';
 import type { NamedImportMap } from './import-processor.js';
+import type { NamedBinding } from './import-resolution.js';
+import type { SyntaxNode } from './utils.js';
+import { findChild } from './resolvers/utils.js';
 
 /**
  * Walk a named-binding re-export chain through NamedImportMap.
@@ -54,52 +56,14 @@ export function walkBindingChain(
   return null;
 }
 
-/**
- * Extract named bindings from an import AST node.
- * Returns undefined if the import is not a named import (e.g., import * or default).
- *
- * TS: import { User, Repo as R } from './models'
- *   → [{local:'User', exported:'User'}, {local:'R', exported:'Repo'}]
- *
- * Python: from models import User, Repo as R
- *   → [{local:'User', exported:'User'}, {local:'R', exported:'Repo'}]
- */
-export function extractNamedBindings(
-  importNode: any,
-  language: SupportedLanguages,
-): { local: string; exported: string }[] | undefined {
-  if (language === SupportedLanguages.TypeScript || language === SupportedLanguages.JavaScript) {
-    return extractTsNamedBindings(importNode);
-  }
-  if (language === SupportedLanguages.Python) {
-    return extractPythonNamedBindings(importNode);
-  }
-  if (language === SupportedLanguages.Kotlin) {
-    return extractKotlinNamedBindings(importNode);
-  }
-  if (language === SupportedLanguages.Rust) {
-    return extractRustNamedBindings(importNode);
-  }
-  if (language === SupportedLanguages.PHP) {
-    return extractPhpNamedBindings(importNode);
-  }
-  if (language === SupportedLanguages.CSharp) {
-    return extractCsharpNamedBindings(importNode);
-  }
-  if (language === SupportedLanguages.Java) {
-    return extractJavaNamedBindings(importNode);
-  }
-  return undefined;
-}
-
-export function extractTsNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
+export function extractTsNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
   // import_statement > import_clause > named_imports > import_specifier*
   const importClause = findChild(importNode, 'import_clause');
   if (importClause) {
     const namedImports = findChild(importClause, 'named_imports');
     if (!namedImports) return undefined; // default import, namespace import, or side-effect
 
-    const bindings: { local: string; exported: string }[] = [];
+    const bindings: NamedBinding[] = [];
     for (let i = 0; i < namedImports.namedChildCount; i++) {
       const specifier = namedImports.namedChild(i);
       if (specifier?.type !== 'import_specifier') continue;
@@ -123,7 +87,7 @@ export function extractTsNamedBindings(importNode: any): { local: string; export
   // Re-export: export { X } from './y' → export_statement > export_clause > export_specifier
   const exportClause = findChild(importNode, 'export_clause');
   if (exportClause) {
-    const bindings: { local: string; exported: string }[] = [];
+    const bindings: NamedBinding[] = [];
     for (let i = 0; i < exportClause.namedChildCount; i++) {
       const specifier = exportClause.namedChild(i);
       if (specifier?.type !== 'export_specifier') continue;
@@ -150,11 +114,11 @@ export function extractTsNamedBindings(importNode: any): { local: string; export
   return undefined;
 }
 
-export function extractPythonNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
+export function extractPythonNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
   // Only from import_from_statement, not plain import_statement
   if (importNode.type !== 'import_from_statement') return undefined;
 
-  const bindings: { local: string; exported: string }[] = [];
+  const bindings: NamedBinding[] = [];
   for (let i = 0; i < importNode.namedChildCount; i++) {
     const child = importNode.namedChild(i);
     if (!child) continue;
@@ -182,7 +146,7 @@ export function extractPythonNamedBindings(importNode: any): { local: string; ex
   return bindings.length > 0 ? bindings : undefined;
 }
 
-export function extractKotlinNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
+export function extractKotlinNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
   // import_header > identifier + import_alias > simple_identifier
   if (importNode.type !== 'import_header') return undefined;
 
@@ -201,26 +165,32 @@ export function extractKotlinNamedBindings(importNode: any): { local: string; ex
   }
 
   // Non-aliased: import com.example.User → local="User", exported="User"
+  // Also handles top-level function imports: import models.getUser → local="getUser"
   // Skip wildcard imports (ending in *)
   if (fullText.endsWith('.*') || fullText.endsWith('*')) return undefined;
-  // Skip lowercase last segments — those are member/function imports (e.g.,
-  // import util.OneArg.writeAudit), not class imports. Multiple member imports
+  // Skip class-member imports (e.g., import util.OneArg.writeAudit) where the
+  // second-to-last segment is PascalCase (a class name). Multiple member imports
   // with the same function name would collide in NamedImportMap, breaking
-  // arity-based disambiguation.
-  if (exportedName[0] && exportedName[0] === exportedName[0].toLowerCase()) return undefined;
+  // arity-based disambiguation. Top-level function imports (import models.getUser)
+  // and class imports (import models.User) have package-only prefixes.
+  const segments = fullText.split('.');
+  if (segments.length >= 3) {
+    const parentSegment = segments[segments.length - 2];
+    if (parentSegment[0] && parentSegment[0] === parentSegment[0].toUpperCase()) return undefined;
+  }
   return [{ local: exportedName, exported: exportedName }];
 }
 
-export function extractRustNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
+export function extractRustNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
   // use_declaration may contain use_as_clause at any depth
   if (importNode.type !== 'use_declaration') return undefined;
 
-  const bindings: { local: string; exported: string }[] = [];
+  const bindings: NamedBinding[] = [];
   collectRustBindings(importNode, bindings);
   return bindings.length > 0 ? bindings : undefined;
 }
 
-function collectRustBindings(node: any, bindings: { local: string; exported: string }[]): void {
+function collectRustBindings(node: SyntaxNode, bindings: NamedBinding[]): void {
   if (node.type === 'use_as_clause') {
     // First identifier = exported name, second identifier = local alias
     const idents: string[] = [];
@@ -278,15 +248,22 @@ function collectRustBindings(node: any, bindings: { local: string; exported: str
   }
 }
 
-export function extractPhpNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
+export function extractPhpNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
   // namespace_use_declaration > namespace_use_clause* (flat)
   // namespace_use_declaration > namespace_use_group > namespace_use_clause* (grouped)
   if (importNode.type !== 'namespace_use_declaration') return undefined;
 
-  const bindings: { local: string; exported: string }[] = [];
+  // Skip 'use function' and 'use const' declarations — these import callables/constants,
+  // not class types, and should not be added to namedImportMap as type bindings.
+  const useTypeNode = importNode.childForFieldName?.('type');
+  if (useTypeNode && (useTypeNode.text === 'function' || useTypeNode.text === 'const')) {
+    return undefined;
+  }
+
+  const bindings: NamedBinding[] = [];
 
   // Collect all clauses — from direct children AND from namespace_use_group
-  const clauses: any[] = [];
+  const clauses: SyntaxNode[] = [];
   for (let i = 0; i < importNode.namedChildCount; i++) {
     const child = importNode.namedChild(i);
     if (child?.type === 'namespace_use_clause') {
@@ -301,8 +278,8 @@ export function extractPhpNamedBindings(importNode: any): { local: string; expor
 
   for (const clause of clauses) {
     // Flat imports: qualified_name + name (alias)
-    let qualifiedName: any = null;
-    const names: any[] = [];
+    let qualifiedName: SyntaxNode | null = null;
+    const names: SyntaxNode[] = [];
     for (let j = 0; j < clause.namedChildCount; j++) {
       const child = clause.namedChild(j);
       if (child?.type === 'qualified_name') qualifiedName = child;
@@ -330,35 +307,55 @@ export function extractPhpNamedBindings(importNode: any): { local: string; expor
   return bindings.length > 0 ? bindings : undefined;
 }
 
-export function extractCsharpNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
-  // using_directive with identifier (alias) + qualified_name (target)
+export function extractCsharpNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
+  // using_directive — three forms:
+  //   using Alias = NS.Type;          → aliasIdent + qualifiedName
+  //   using static NS.Type;           → static + qualifiedName (no alias)
+  //   using NS;                       → qualifiedName only (namespace, not capturable)
   if (importNode.type !== 'using_directive') return undefined;
 
-  let aliasIdent: any = null;
-  let qualifiedName: any = null;
+  let aliasIdent: SyntaxNode | null = null;
+  let qualifiedName: SyntaxNode | null = null;
+  let isStatic = false;
+  for (let i = 0; i < importNode.childCount; i++) {
+    const child = importNode.child(i);
+    if (child?.text === 'static') isStatic = true;
+  }
   for (let i = 0; i < importNode.namedChildCount; i++) {
     const child = importNode.namedChild(i);
     if (child?.type === 'identifier' && !aliasIdent) aliasIdent = child;
     else if (child?.type === 'qualified_name') qualifiedName = child;
   }
 
-  if (!aliasIdent || !qualifiedName) return undefined;
+  // Form 1: using Alias = NS.Type;
+  if (aliasIdent && qualifiedName) {
+    const fullText = qualifiedName.text;
+    const exportedName = fullText.includes('.') ? fullText.split('.').pop()! : fullText;
+    return [{ local: aliasIdent.text, exported: exportedName }];
+  }
 
-  const fullText = qualifiedName.text;
-  const exportedName = fullText.includes('.') ? fullText.split('.').pop()! : fullText;
+  // Form 2: using static NS.Type; — last segment is the class name
+  if (isStatic && qualifiedName) {
+    const fullText = qualifiedName.text;
+    const lastSegment = fullText.includes('.') ? fullText.split('.').pop()! : fullText;
+    return [{ local: lastSegment, exported: lastSegment }];
+  }
 
-  return [{ local: aliasIdent.text, exported: exportedName }];
+  // Form 3: using NS; — namespace import, can't resolve to per-symbol bindings
+  return undefined;
 }
 
-export function extractJavaNamedBindings(importNode: any): { local: string; exported: string }[] | undefined {
+export function extractJavaNamedBindings(importNode: SyntaxNode): NamedBinding[] | undefined {
   // import_declaration > scoped_identifier "com.example.models.User"
   // Wildcard imports (.*) don't produce named bindings
   if (importNode.type !== 'import_declaration') return undefined;
 
-  // Check for asterisk (wildcard import) — skip those
+  // Check for asterisk (wildcard import) and static modifier
+  let isStatic = false;
   for (let i = 0; i < importNode.childCount; i++) {
     const child = importNode.child(i);
     if (child?.type === 'asterisk') return undefined;
+    if (child?.text === 'static') isStatic = true;
   }
 
   const scopedId = findChild(importNode, 'scoped_identifier');
@@ -368,17 +365,11 @@ export function extractJavaNamedBindings(importNode: any): { local: string; expo
   const lastDot = fullText.lastIndexOf('.');
   if (lastDot === -1) return undefined;
 
-  const className = fullText.slice(lastDot + 1);
-  // Skip lowercase names — those are package imports, not class imports
-  if (className[0] && className[0] === className[0].toLowerCase()) return undefined;
+  const name = fullText.slice(lastDot + 1);
+  // Non-static: skip lowercase names — those are package imports, not class imports.
+  // Static: allow lowercase — `import static models.UserFactory.getUser` imports a method.
+  if (!isStatic && name[0] && name[0] === name[0].toLowerCase()) return undefined;
 
-  return [{ local: className, exported: className }];
+  return [{ local: name, exported: name }];
 }
 
-function findChild(node: any, type: string): any {
-  for (let i = 0; i < node.namedChildCount; i++) {
-    const child = node.namedChild(i);
-    if (child?.type === type) return child;
-  }
-  return null;
-}
diff --git a/gitnexus/src/core/ingestion/parsing-processor.ts b/gitnexus/src/core/ingestion/parsing-processor.ts
index c3ac9ec55..455b28c79 100644
--- a/gitnexus/src/core/ingestion/parsing-processor.ts
+++ b/gitnexus/src/core/ingestion/parsing-processor.ts
@@ -1,16 +1,17 @@
-import { KnowledgeGraph, GraphNode, GraphRelationship } from '../graph/types.js';
+import { KnowledgeGraph, GraphNode, GraphRelationship, type NodeLabel } from '../graph/types.js';
 import Parser from 'tree-sitter';
-import { loadParser, loadLanguage } from '../tree-sitter/parser-loader.js';
+import { loadParser, loadLanguage, isLanguageAvailable } from '../tree-sitter/parser-loader.js';
 import { LANGUAGE_QUERIES } from './tree-sitter-queries.js';
 import { generateId } from '../../lib/utils.js';
 import { SymbolTable } from './symbol-table.js';
 import { ASTCache } from './ast-cache.js';
-import { getLanguageFromFilename, yieldToEventLoop, DEFINITION_CAPTURE_KEYS, getDefinitionNodeFromCaptures, findEnclosingClassId, extractMethodSignature } from './utils.js';
+import { getLanguageFromFilename, yieldToEventLoop, getDefinitionNodeFromCaptures, findEnclosingClassId, extractMethodSignature, getLabelFromCaptures } from './utils.js';
+import { extractPropertyDeclaredType } from './type-extractors/shared.js';
 import { isNodeExported } from './export-detection.js';
 import { detectFrameworkFromAST } from './framework-detection.js';
 import { typeConfigs } from './type-extractors/index.js';
 import { WorkerPool } from './workers/worker-pool.js';
-import type { ParseWorkerResult, ParseWorkerInput, ExtractedImport, ExtractedCall, ExtractedHeritage, ExtractedRoute, FileConstructorBindings } from './workers/parse-worker.js';
+import type { ParseWorkerResult, ParseWorkerInput, ExtractedImport, ExtractedCall, ExtractedAssignment, ExtractedHeritage, ExtractedRoute, FileConstructorBindings, FileTypeEnvBindings } from './workers/parse-worker.js';
 import { getTreeSitterBufferSize, TREE_SITTER_MAX_BUFFER } from './constants.js';
 
 export type FileProgressCallback = (current: number, total: number, filePath: string) => void;
@@ -18,15 +19,13 @@ export type FileProgressCallback = (current: number, total: number, filePath: st
 export interface WorkerExtractedData {
   imports: ExtractedImport[];
   calls: ExtractedCall[];
+  assignments: ExtractedAssignment[];
   heritage: ExtractedHeritage[];
   routes: ExtractedRoute[];
   constructorBindings: FileConstructorBindings[];
+  typeEnvBindings: FileTypeEnvBindings[];
 }
 
-// isNodeExported imported from ./export-detection.js (shared module)
-// Re-export for backward compatibility with any external consumers
-export { isNodeExported } from './export-detection.js';
-
 // ============================================================================
 // Worker-based parallel parsing
 // ============================================================================
@@ -46,7 +45,7 @@ const processParsingWithWorkers = async (
     if (lang) parseableFiles.push({ path: file.path, content: file.content });
   }
 
-  if (parseableFiles.length === 0) return { imports: [], calls: [], heritage: [], routes: [], constructorBindings: [] };
+  if (parseableFiles.length === 0) return { imports: [], calls: [], assignments: [], heritage: [], routes: [], constructorBindings: [], typeEnvBindings: [] };
 
   const total = files.length;
 
@@ -61,9 +60,11 @@ const processParsingWithWorkers = async (
   // Merge results from all workers into graph and symbol table
   const allImports: ExtractedImport[] = [];
   const allCalls: ExtractedCall[] = [];
+  const allAssignments: ExtractedAssignment[] = [];
   const allHeritage: ExtractedHeritage[] = [];
   const allRoutes: ExtractedRoute[] = [];
   const allConstructorBindings: FileConstructorBindings[] = [];
+  const allTypeEnvBindings: FileTypeEnvBindings[] = [];
   for (const result of chunkResults) {
     for (const node of result.nodes) {
       graph.addNode({
@@ -80,21 +81,40 @@ const processParsingWithWorkers = async (
     for (const sym of result.symbols) {
       symbolTable.add(sym.filePath, sym.name, sym.nodeId, sym.type, {
         parameterCount: sym.parameterCount,
+        requiredParameterCount: sym.requiredParameterCount,
+        parameterTypes: sym.parameterTypes,
         returnType: sym.returnType,
+        declaredType: sym.declaredType,
         ownerId: sym.ownerId,
       });
     }
 
     allImports.push(...result.imports);
     allCalls.push(...result.calls);
+    allAssignments.push(...result.assignments);
     allHeritage.push(...result.heritage);
     allRoutes.push(...result.routes);
     allConstructorBindings.push(...result.constructorBindings);
+    allTypeEnvBindings.push(...result.typeEnvBindings);
+  }
+
+  // Merge and log skipped languages from workers
+  const skippedLanguages = new Map<string, number>();
+  for (const result of chunkResults) {
+    for (const [lang, count] of Object.entries(result.skippedLanguages)) {
+      skippedLanguages.set(lang, (skippedLanguages.get(lang) || 0) + count);
+    }
+  }
+  if (skippedLanguages.size > 0) {
+    const summary = Array.from(skippedLanguages.entries())
+      .map(([lang, count]) => `${lang}: ${count}`)
+      .join(', ');
+    console.warn(`  Skipped unsupported languages: ${summary}`);
   }
 
   // Final progress
   onFileProgress?.(total, total, 'done');
-  return { imports: allImports, calls: allCalls, heritage: allHeritage, routes: allRoutes, constructorBindings: allConstructorBindings };
+  return { imports: allImports, calls: allCalls, assignments: allAssignments, heritage: allHeritage, routes: allRoutes, constructorBindings: allConstructorBindings, typeEnvBindings: allTypeEnvBindings };
 };
 
 // ============================================================================
@@ -110,6 +130,7 @@ const processParsingSequential = async (
 ) => {
   const parser = await loadParser();
   const total = files.length;
+  const skippedLanguages = new Map<string, number>();
 
   for (let i = 0; i < files.length; i++) {
     const file = files[i];
@@ -122,13 +143,19 @@ const processParsingSequential = async (
 
     if (!language) continue;
 
+    // Skip unsupported languages (e.g. Swift when tree-sitter-swift not installed)
+    if (!isLanguageAvailable(language)) {
+      skippedLanguages.set(language, (skippedLanguages.get(language) || 0) + 1);
+      continue;
+    }
+
     // Skip files larger than the max tree-sitter buffer (32 MB)
     if (file.content.length > TREE_SITTER_MAX_BUFFER) continue;
 
     try {
       await loadLanguage(language, file.path);
     } catch {
-      continue;  // parser unavailable — already warned in pipeline
+      continue;  // parser unavailable — safety net
     }
 
     let tree;
@@ -164,44 +191,14 @@ const processParsingSequential = async (
         captureMap[c.name] = c.node;
       });
 
-      if (captureMap['import']) {
-        return;
-      }
-
-      if (captureMap['call']) {
-        return;
-      }
+      const nodeLabel = getLabelFromCaptures(captureMap, language);
+      if (!nodeLabel) return;
 
       const nameNode = captureMap['name'];
       // Synthesize name for constructors without explicit @name capture (e.g. Swift init)
-      if (!nameNode && !captureMap['definition.constructor']) return;
+      if (!nameNode && nodeLabel !== 'Constructor') return;
       const nodeName = nameNode ? nameNode.text : 'init';
 
-      let nodeLabel = 'CodeElement';
-
-      if (captureMap['definition.function']) nodeLabel = 'Function';
-      else if (captureMap['definition.class']) nodeLabel = 'Class';
-      else if (captureMap['definition.interface']) nodeLabel = 'Interface';
-      else if (captureMap['definition.method']) nodeLabel = 'Method';
-      else if (captureMap['definition.struct']) nodeLabel = 'Struct';
-      else if (captureMap['definition.enum']) nodeLabel = 'Enum';
-      else if (captureMap['definition.namespace']) nodeLabel = 'Namespace';
-      else if (captureMap['definition.module']) nodeLabel = 'Module';
-      else if (captureMap['definition.trait']) nodeLabel = 'Trait';
-      else if (captureMap['definition.impl']) nodeLabel = 'Impl';
-      else if (captureMap['definition.type']) nodeLabel = 'TypeAlias';
-      else if (captureMap['definition.const']) nodeLabel = 'Const';
-      else if (captureMap['definition.static']) nodeLabel = 'Static';
-      else if (captureMap['definition.typedef']) nodeLabel = 'Typedef';
-      else if (captureMap['definition.macro']) nodeLabel = 'Macro';
-      else if (captureMap['definition.union']) nodeLabel = 'Union';
-      else if (captureMap['definition.property']) nodeLabel = 'Property';
-      else if (captureMap['definition.record']) nodeLabel = 'Record';
-      else if (captureMap['definition.delegate']) nodeLabel = 'Delegate';
-      else if (captureMap['definition.annotation']) nodeLabel = 'Annotation';
-      else if (captureMap['definition.constructor']) nodeLabel = 'Constructor';
-      else if (captureMap['definition.template']) nodeLabel = 'Template';
-
       const definitionNodeForRange = getDefinitionNodeFromCaptures(captureMap);
       const startLine = definitionNodeForRange ? definitionNodeForRange.startPosition.row : (nameNode ? nameNode.startPosition.row : 0);
       const nodeId = generateId(nodeLabel, `${file.path}:${nodeName}`);
@@ -217,10 +214,12 @@ const processParsingSequential = async (
         : undefined;
 
       // Language-specific return type fallback (e.g. Ruby YARD @return [Type])
-      if (methodSig && !methodSig.returnType && definitionNode) {
+      // Also upgrades uninformative AST types like PHP `array` with PHPDoc `@return User[]`
+      if (methodSig && (!methodSig.returnType || methodSig.returnType === 'array' || methodSig.returnType === 'iterable') && definitionNode) {
         const tc = typeConfigs[language as keyof typeof typeConfigs];
         if (tc?.extractReturnType) {
-          methodSig.returnType = tc.extractReturnType(definitionNode);
+          const docReturn = tc.extractReturnType(definitionNode);
+          if (docReturn) methodSig.returnType = docReturn;
         }
       }
 
@@ -240,6 +239,8 @@ const processParsingSequential = async (
           } : {}),
           ...(methodSig ? {
             parameterCount: methodSig.parameterCount,
+            ...(methodSig.requiredParameterCount !== undefined ? { requiredParameterCount: methodSig.requiredParameterCount } : {}),
+            ...(methodSig.parameterTypes ? { parameterTypes: methodSig.parameterTypes } : {}),
             returnType: methodSig.returnType,
           } : {}),
         },
@@ -252,9 +253,17 @@ const processParsingSequential = async (
       const needsOwner = nodeLabel === 'Method' || nodeLabel === 'Constructor' || nodeLabel === 'Property' || nodeLabel === 'Function';
       const enclosingClassId = needsOwner ? findEnclosingClassId(nameNode || definitionNodeForRange, file.path) : null;
 
+      // Extract declared type for Property nodes (field/property type annotations)
+      const declaredType = (nodeLabel === 'Property' && definitionNode)
+        ? extractPropertyDeclaredType(definitionNode)
+        : undefined;
+
       symbolTable.add(file.path, nodeName, nodeId, nodeLabel, {
         parameterCount: methodSig?.parameterCount,
+        requiredParameterCount: methodSig?.requiredParameterCount,
+        parameterTypes: methodSig?.parameterTypes,
         returnType: methodSig?.returnType,
+        declaredType,
         ownerId: enclosingClassId ?? undefined,
       });
 
@@ -273,19 +282,27 @@ const processParsingSequential = async (
 
       graph.addRelationship(relationship);
 
-      // ── HAS_METHOD: link method/constructor/property to enclosing class ──
+      // ── HAS_METHOD / HAS_PROPERTY: link member to enclosing class ──
       if (enclosingClassId) {
+        const memberEdgeType = nodeLabel === 'Property' ? 'HAS_PROPERTY' : 'HAS_METHOD';
         graph.addRelationship({
-          id: generateId('HAS_METHOD', `${enclosingClassId}->${nodeId}`),
+          id: generateId(memberEdgeType, `${enclosingClassId}->${nodeId}`),
           sourceId: enclosingClassId,
           targetId: nodeId,
-          type: 'HAS_METHOD',
+          type: memberEdgeType,
           confidence: 1.0,
           reason: '',
         });
       }
     });
   }
+
+  if (skippedLanguages.size > 0) {
+    const summary = Array.from(skippedLanguages.entries())
+      .map(([lang, count]) => `${lang}: ${count}`)
+      .join(', ');
+    console.warn(`  Skipped unsupported languages: ${summary}`);
+  }
 };
 
 // ============================================================================
diff --git a/gitnexus/src/core/ingestion/pipeline.ts b/gitnexus/src/core/ingestion/pipeline.ts
index 862c699a0..68607c783 100644
--- a/gitnexus/src/core/ingestion/pipeline.ts
+++ b/gitnexus/src/core/ingestion/pipeline.ts
@@ -1,12 +1,14 @@
 import { createKnowledgeGraph } from '../graph/graph.js';
 import { processStructure } from './structure-processor.js';
+import { processMarkdown } from './markdown-processor.js';
 import { processParsing } from './parsing-processor.js';
 import {
   processImports,
   processImportsFromExtracted,
   buildImportResolutionContext
 } from './import-processor.js';
-import { processCalls, processCallsFromExtracted, processRoutesFromExtracted } from './call-processor.js';
+import { EMPTY_INDEX } from './resolvers/index.js';
+import { processCalls, processCallsFromExtracted, processAssignmentsFromExtracted, processRoutesFromExtracted, seedCrossFileReceiverTypes, buildImportedReturnTypes, buildImportedRawReturnTypes, type ExportedTypeMap, buildExportedTypeMapFromGraph } from './call-processor.js';
 import { processHeritage, processHeritageFromExtracted } from './heritage-processor.js';
 import { computeMRO } from './mro-processor.js';
 import { processCommunities } from './community-processor.js';
@@ -17,6 +19,7 @@ import { PipelineProgress, PipelineResult } from '../../types/pipeline.js';
 import { walkRepositoryPaths, readFileContents } from './filesystem-walker.js';
 import { getLanguageFromFilename } from './utils.js';
 import { isLanguageAvailable } from '../tree-sitter/parser-loader.js';
+import { SupportedLanguages } from '../../config/supported-languages.js';
 import { createWorkerPool, WorkerPool } from './workers/worker-pool.js';
 import fs from 'node:fs';
 import path from 'node:path';
@@ -24,6 +27,62 @@ import { fileURLToPath, pathToFileURL } from 'node:url';
 
 const isDev = process.env.NODE_ENV === 'development';
 
+/** A group of files with no mutual dependencies, safe to process in parallel. */
+type IndependentFileGroup = readonly string[];
+
+/** Kahn's algorithm: returns files grouped by topological level.
+ *  Files in the same level have no mutual dependencies — safe to process in parallel.
+ *  Files in cycles are returned as a final group (no cross-cycle propagation). */
+export function topologicalLevelSort(
+  importMap: ReadonlyMap<string, ReadonlySet<string>>,
+): { levels: readonly IndependentFileGroup[]; cycleCount: number } {
+  // Build in-degree map and reverse dependency map
+  const inDegree = new Map<string, number>();
+  const reverseDeps = new Map<string, string[]>();
+
+  for (const [file, deps] of importMap) {
+    if (!inDegree.has(file)) inDegree.set(file, 0);
+    for (const dep of deps) {
+      if (!inDegree.has(dep)) inDegree.set(dep, 0);
+      // file imports dep, so dep must be processed before file
+      // In Kahn's terms: dep → file (dep is a prerequisite of file)
+      inDegree.set(file, (inDegree.get(file) ?? 0) + 1);
+      let rev = reverseDeps.get(dep);
+      if (!rev) { rev = []; reverseDeps.set(dep, rev); }
+      rev.push(file);
+    }
+  }
+
+  // BFS from zero-in-degree nodes, grouping by level
+  const levels: string[][] = [];
+  let currentLevel = [...inDegree.entries()]
+    .filter(([, d]) => d === 0)
+    .map(([f]) => f);
+
+  while (currentLevel.length > 0) {
+    levels.push(currentLevel);
+    const nextLevel: string[] = [];
+    for (const file of currentLevel) {
+      for (const dependent of reverseDeps.get(file) ?? []) {
+        const newDeg = (inDegree.get(dependent) ?? 1) - 1;
+        inDegree.set(dependent, newDeg);
+        if (newDeg === 0) nextLevel.push(dependent);
+      }
+    }
+    currentLevel = nextLevel;
+  }
+
+  // Files still with positive in-degree are in cycles — add as final group
+  const cycleFiles = [...inDegree.entries()]
+    .filter(([, d]) => d > 0)
+    .map(([f]) => f);
+  if (cycleFiles.length > 0) {
+    levels.push(cycleFiles);
+  }
+
+  return { levels, cycleCount: cycleFiles.length };
+}
+
 /** Max bytes of source content to load per parse chunk. Each chunk's source +
  *  parsed ASTs + extracted records + worker serialization overhead all live in
  *  memory simultaneously, so this must be conservative. 20MB source ≈ 200-400MB
@@ -33,14 +92,276 @@ const CHUNK_BYTE_BUDGET = 20 * 1024 * 1024; // 20MB
 /** Max AST trees to keep in LRU cache */
 const AST_CACHE_CAP = 50;
 
+/** Minimum percentage of files that must benefit from cross-file seeding to justify the re-resolution pass. */
+const CROSS_FILE_SKIP_THRESHOLD = 0.03;
+/** Hard cap on files re-processed during cross-file propagation. */
+const MAX_CROSS_FILE_REPROCESS = 2000;
+
+/** Node labels that represent top-level importable symbols.
+ *  Excludes Method, Property, Constructor (accessed via receiver, not directly imported),
+ *  and structural labels (File, Folder, Package, Module, Project, etc.). */
+const IMPORTABLE_SYMBOL_LABELS = new Set([
+  'Function', 'Class', 'Interface', 'Struct', 'Enum', 'Trait',
+  'TypeAlias', 'Const', 'Static', 'Record', 'Union', 'Typedef', 'Macro',
+]);
+
+/** Max synthetic bindings per importing file — prevents memory bloat for
+ *  C/C++ files that include many large headers. */
+const MAX_SYNTHETIC_BINDINGS_PER_FILE = 1000;
+
+/** Languages with whole-module import semantics (no per-symbol named imports).
+ *  For these languages, namedImportMap entries are synthesized from graph-exported
+ *  symbols after parsing, enabling Phase 14 cross-file binding propagation. */
+const WILDCARD_IMPORT_LANGUAGES = new Set([
+  SupportedLanguages.Go,
+  SupportedLanguages.Ruby,
+  SupportedLanguages.C,
+  SupportedLanguages.CPlusPlus,
+  SupportedLanguages.Swift,
+]);
+
+/** Synthesize namedImportMap entries for languages with whole-module imports.
+ *  These languages (Go, Ruby, C/C++, Swift) import all exported symbols from a file,
+ *  not specific named symbols. After parsing, we know which symbols each file exports
+ *  (via graph isExported), so we can expand ImportMap edges into per-symbol bindings
+ *  that Phase 14 can use for cross-file type propagation. */
+function synthesizeWildcardImportBindings(
+  graph: ReturnType<typeof createKnowledgeGraph>,
+  ctx: ReturnType<typeof createResolutionContext>,
+): number {
+  // Pre-compute exported symbols per file from graph (single pass)
+  const exportedSymbolsByFile = new Map<string, { name: string; filePath: string }[]>();
+  graph.forEachNode(node => {
+    if (!node.properties?.isExported) return;
+    if (!IMPORTABLE_SYMBOL_LABELS.has(node.label)) return;
+    const fp = node.properties.filePath;
+    const name = node.properties.name;
+    if (!fp || !name) return;
+    let symbols = exportedSymbolsByFile.get(fp);
+    if (!symbols) { symbols = []; exportedSymbolsByFile.set(fp, symbols); }
+    symbols.push({ name, filePath: fp });
+  });
+
+  if (exportedSymbolsByFile.size === 0) return 0;
+
+  // Build a merged import map: ctx.importMap has file-based imports (Ruby, C/C++),
+  // but Go/C# package imports use graph IMPORTS edges + PackageMap instead.
+  // Collect graph-level IMPORTS edges for wildcard languages missing from ctx.importMap.
+  const FILE_PREFIX = 'File:';
+  const graphImports = new Map<string, Set<string>>();
+  graph.forEachRelationship(rel => {
+    if (rel.type !== 'IMPORTS') return;
+    if (!rel.sourceId.startsWith(FILE_PREFIX) || !rel.targetId.startsWith(FILE_PREFIX)) return;
+    const srcFile = rel.sourceId.slice(FILE_PREFIX.length);
+    const tgtFile = rel.targetId.slice(FILE_PREFIX.length);
+    const lang = getLanguageFromFilename(srcFile);
+    if (!lang || !WILDCARD_IMPORT_LANGUAGES.has(lang)) return;
+    // Only add if not already in ctx.importMap (avoid duplicates)
+    if (ctx.importMap.get(srcFile)?.has(tgtFile)) return;
+    let set = graphImports.get(srcFile);
+    if (!set) { set = new Set(); graphImports.set(srcFile, set); }
+    set.add(tgtFile);
+  });
+
+  let totalSynthesized = 0;
+
+  // Helper: synthesize bindings for a file given its imported files
+  const synthesizeForFile = (filePath: string, importedFiles: Iterable<string>) => {
+    let fileBindings = ctx.namedImportMap.get(filePath);
+    let fileCount = fileBindings?.size ?? 0;
+
+    for (const importedFile of importedFiles) {
+      const exportedSymbols = exportedSymbolsByFile.get(importedFile);
+      if (!exportedSymbols) continue;
+
+      for (const sym of exportedSymbols) {
+        if (fileCount >= MAX_SYNTHETIC_BINDINGS_PER_FILE) return;
+        if (fileBindings?.has(sym.name)) continue;
+
+        if (!fileBindings) {
+          fileBindings = new Map();
+          ctx.namedImportMap.set(filePath, fileBindings);
+        }
+        fileBindings.set(sym.name, {
+          sourcePath: importedFile,
+          exportedName: sym.name,
+        });
+        fileCount++;
+        totalSynthesized++;
+      }
+    }
+  };
+
+  // Process files from ctx.importMap (Ruby, C/C++, Swift file-based imports)
+  for (const [filePath, importedFiles] of ctx.importMap) {
+    const lang = getLanguageFromFilename(filePath);
+    if (!lang || !WILDCARD_IMPORT_LANGUAGES.has(lang)) continue;
+    synthesizeForFile(filePath, importedFiles);
+  }
+
+  // Process files from graph IMPORTS edges (Go package imports)
+  for (const [filePath, importedFiles] of graphImports) {
+    synthesizeForFile(filePath, importedFiles);
+  }
+
+  return totalSynthesized;
+}
+
+/** Phase 14: Cross-file binding propagation.
+ *  Seeds downstream files with resolved type bindings from upstream exports.
+ *  Files are processed in topological import order so upstream bindings are
+ *  available when downstream files are re-resolved. */
+async function runCrossFileBindingPropagation(
+  graph: ReturnType<typeof createKnowledgeGraph>,
+  ctx: ReturnType<typeof createResolutionContext>,
+  exportedTypeMap: ExportedTypeMap,
+  allPaths: string[],
+  totalFiles: number,
+  repoPath: string,
+  pipelineStart: number,
+  onProgress: (progress: PipelineProgress) => void,
+): Promise<void> {
+  // For the worker path, buildTypeEnv runs inside workers without SymbolTable,
+  // so exported bindings must be collected from graph + SymbolTable in main thread.
+  if (exportedTypeMap.size === 0 && graph.nodeCount > 0) {
+    const graphExports = buildExportedTypeMapFromGraph(graph, ctx.symbols);
+    for (const [fp, exports] of graphExports) exportedTypeMap.set(fp, exports);
+  }
+
+  if (exportedTypeMap.size === 0 || ctx.namedImportMap.size === 0) return;
+
+  const allPathSet = new Set(allPaths);
+  const { levels, cycleCount } = topologicalLevelSort(ctx.importMap);
+
+  // Cycle diagnostic: only log when actual cycles detected (cycleCount from Kahn's BFS)
+  if (isDev && cycleCount > 0) {
+    console.log(`🔄 ${cycleCount} files in import cycles (skipped for cross-file propagation)`);
+  }
+
+  // Quick count of files with cross-file binding gaps (early exit once threshold exceeded)
+  let filesWithGaps = 0;
+  const gapThreshold = Math.max(1, Math.ceil(totalFiles * CROSS_FILE_SKIP_THRESHOLD));
+  outer: for (const level of levels) {
+    for (const filePath of level) {
+      const imports = ctx.namedImportMap.get(filePath);
+      if (!imports) continue;
+      for (const [, binding] of imports) {
+        const upstream = exportedTypeMap.get(binding.sourcePath);
+        if (upstream?.has(binding.exportedName)) { filesWithGaps++; break; }
+        const def = ctx.symbols.lookupExactFull(binding.sourcePath, binding.exportedName);
+        if (def?.returnType) { filesWithGaps++; break; }
+      }
+      if (filesWithGaps >= gapThreshold) break outer;
+    }
+  }
+
+  const gapRatio = totalFiles > 0 ? filesWithGaps / totalFiles : 0;
+  if (gapRatio < CROSS_FILE_SKIP_THRESHOLD && filesWithGaps < gapThreshold) {
+    if (isDev) {
+      console.log(`⏭️ Cross-file re-resolution skipped (${filesWithGaps}/${totalFiles} files, ${(gapRatio * 100).toFixed(1)}% < ${CROSS_FILE_SKIP_THRESHOLD * 100}% threshold)`);
+    }
+    return;
+  }
+
+  onProgress({
+    phase: 'parsing',
+    percent: 82,
+    message: `Cross-file type propagation (${filesWithGaps}+ files)...`,
+    stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
+  });
+
+  let crossFileResolved = 0;
+  const crossFileStart = Date.now();
+  let astCache = createASTCache(AST_CACHE_CAP);
+
+  for (const level of levels) {
+    const levelCandidates: { filePath: string; seeded: Map<string, string>; importedReturns: ReadonlyMap<string, string>; importedRawReturns: ReadonlyMap<string, string> }[] = [];
+    for (const filePath of level) {
+      if (crossFileResolved + levelCandidates.length >= MAX_CROSS_FILE_REPROCESS) break;
+      const imports = ctx.namedImportMap.get(filePath);
+      if (!imports) continue;
+
+      const seeded = new Map<string, string>();
+      for (const [localName, binding] of imports) {
+        const upstream = exportedTypeMap.get(binding.sourcePath);
+        if (upstream) {
+          const type = upstream.get(binding.exportedName);
+          if (type) seeded.set(localName, type);
+        }
+      }
+
+      const importedReturns = buildImportedReturnTypes(filePath, ctx.namedImportMap, ctx.symbols);
+      const importedRawReturns = buildImportedRawReturnTypes(filePath, ctx.namedImportMap, ctx.symbols);
+      if (seeded.size === 0 && importedReturns.size === 0) continue;
+      if (!allPathSet.has(filePath)) continue;
+
+      const lang = getLanguageFromFilename(filePath);
+      if (!lang || !isLanguageAvailable(lang)) continue;
+
+      levelCandidates.push({ filePath, seeded, importedReturns, importedRawReturns });
+    }
+
+    if (levelCandidates.length === 0) continue;
+
+    const levelPaths = levelCandidates.map(c => c.filePath);
+    const contentMap = await readFileContents(repoPath, levelPaths);
+
+    for (const { filePath, seeded, importedReturns, importedRawReturns } of levelCandidates) {
+      const content = contentMap.get(filePath);
+      if (!content) continue;
+
+      const reFile = [{ path: filePath, content }];
+      const bindings = new Map<string, ReadonlyMap<string, string>>();
+      if (seeded.size > 0) bindings.set(filePath, seeded);
+
+      const importedReturnTypesMap = new Map<string, ReadonlyMap<string, string>>();
+      if (importedReturns.size > 0) {
+        importedReturnTypesMap.set(filePath, importedReturns);
+      }
+
+      const importedRawReturnTypesMap = new Map<string, ReadonlyMap<string, string>>();
+      if (importedRawReturns.size > 0) {
+        importedRawReturnTypesMap.set(filePath, importedRawReturns);
+      }
+
+      await processCalls(graph, reFile, astCache, ctx, undefined, exportedTypeMap, bindings.size > 0 ? bindings : undefined, importedReturnTypesMap.size > 0 ? importedReturnTypesMap : undefined, importedRawReturnTypesMap.size > 0 ? importedRawReturnTypesMap : undefined);
+      crossFileResolved++;
+    }
+
+    if (crossFileResolved >= MAX_CROSS_FILE_REPROCESS) {
+      if (isDev) console.log(`⚠️ Cross-file re-resolution capped at ${MAX_CROSS_FILE_REPROCESS} files`);
+      break;
+    }
+  }
+
+  astCache.clear();
+
+  if (isDev) {
+    const elapsed = Date.now() - crossFileStart;
+    const totalElapsed = Date.now() - pipelineStart;
+    const reResolutionPct = totalElapsed > 0 ? ((elapsed / totalElapsed) * 100).toFixed(1) : '0';
+    console.log(
+      `🔗 Cross-file re-resolution: ${crossFileResolved} candidates re-processed` +
+      ` in ${elapsed}ms (${reResolutionPct}% of total ingestion time so far)`,
+    );
+  }
+}
+
+export interface PipelineOptions {
+  /** Skip MRO, community detection, and process extraction for faster test runs. */
+  skipGraphPhases?: boolean;
+}
+
 export const runPipelineFromRepo = async (
   repoPath: string,
-  onProgress: (progress: PipelineProgress) => void
+  onProgress: (progress: PipelineProgress) => void,
+  options?: PipelineOptions,
 ): Promise<PipelineResult> => {
   const graph = createKnowledgeGraph();
   const ctx = createResolutionContext();
   const symbolTable = ctx.symbols;
   let astCache = createASTCache(AST_CACHE_CAP);
+  const pipelineStart = Date.now();
 
   const cleanup = () => {
     astCache.clear();
@@ -93,6 +414,21 @@ export const runPipelineFromRepo = async (
       stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
     });
 
+
+    // ── Phase 2.5: Markdown processing (headings + cross-links) ────────
+    const mdScanned = scannedFiles.filter(f => f.path.endsWith('.md') || f.path.endsWith('.mdx'));
+    if (mdScanned.length > 0) {
+      const mdContents = await readFileContents(repoPath, mdScanned.map(f => f.path));
+      const mdFiles = mdScanned
+        .filter(f => mdContents.has(f.path))
+        .map(f => ({ path: f.path, content: mdContents.get(f.path)! }));
+      const allPathSet = new Set(allPaths);
+      const mdResult = processMarkdown(graph, mdFiles, allPathSet);
+      if (isDev) {
+        console.log(`  Markdown: ${mdResult.sections} sections, ${mdResult.links} cross-links from ${mdFiles.length} files`);
+      }
+    }
+
     // ── Phase 3+4: Chunked read + parse ────────────────────────────────
     // Group parseable files into byte-budget chunks so only ~20MB of source
     // is in memory at a time. Each chunk is: read → parse → extract → free.
@@ -154,22 +490,29 @@ export const runPipelineFromRepo = async (
       stats: { filesProcessed: 0, totalFiles: totalParseable, nodesCreated: graph.nodeCount },
     });
 
+    // Don't spawn workers for tiny repos — overhead exceeds benefit
+    const MIN_FILES_FOR_WORKERS = 15;
+    const MIN_BYTES_FOR_WORKERS = 512 * 1024;
+    const totalBytes = parseableScanned.reduce((s, f) => s + f.size, 0);
+
     // Create worker pool once, reuse across chunks
     let workerPool: WorkerPool | undefined;
-    try {
-      let workerUrl = new URL('./workers/parse-worker.js', import.meta.url);
-      // When running under vitest, import.meta.url points to src/ where no .js exists.
-      // Fall back to the compiled dist/ worker so the pool can spawn real worker threads.
-      const thisDir = fileURLToPath(new URL('.', import.meta.url));
-      if (!fs.existsSync(fileURLToPath(workerUrl))) {
-        const distWorker = path.resolve(thisDir, '..', '..', '..', 'dist', 'core', 'ingestion', 'workers', 'parse-worker.js');
-        if (fs.existsSync(distWorker)) {
-          workerUrl = pathToFileURL(distWorker) as URL;
+    if (totalParseable >= MIN_FILES_FOR_WORKERS || totalBytes >= MIN_BYTES_FOR_WORKERS) {
+      try {
+        let workerUrl = new URL('./workers/parse-worker.js', import.meta.url);
+        // When running under vitest, import.meta.url points to src/ where no .js exists.
+        // Fall back to the compiled dist/ worker so the pool can spawn real worker threads.
+        const thisDir = fileURLToPath(new URL('.', import.meta.url));
+        if (!fs.existsSync(fileURLToPath(workerUrl))) {
+          const distWorker = path.resolve(thisDir, '..', '..', '..', 'dist', 'core', 'ingestion', 'workers', 'parse-worker.js');
+          if (fs.existsSync(distWorker)) {
+            workerUrl = pathToFileURL(distWorker) as URL;
+          }
         }
+        workerPool = createWorkerPool(workerUrl);
+      } catch (err) {
+        if (isDev) console.warn('Worker pool creation failed, using sequential fallback:', (err as Error).message);
       }
-      workerPool = createWorkerPool(workerUrl);
-    } catch (err) {
-      if (isDev) console.warn('Worker pool creation failed, using sequential fallback:', (err as Error).message);
     }
 
     let filesParsedSoFar = 0;
@@ -188,6 +531,10 @@ export const runPipelineFromRepo = async (
     // are already registered). This trades ~5% cross-chunk resolution accuracy for
     // 200-400MB less memory — critical for Linux-kernel-scale repos.
     const sequentialChunkPaths: string[][] = [];
+    // Phase 14: Collect exported type bindings for cross-file propagation
+    const exportedTypeMap: ExportedTypeMap = new Map();
+    // Accumulate file-scope TypeEnv bindings from workers (closes worker/sequential quality gap)
+    const workerTypeEnvBindings: { filePath: string; bindings: [string, string][] }[] = [];
 
     try {
       for (let chunkIdx = 0; chunkIdx < numChunks; chunkIdx++) {
@@ -229,6 +576,19 @@ export const runPipelineFromRepo = async (
               stats: { filesProcessed: filesParsedSoFar, totalFiles: totalParseable, nodesCreated: graph.nodeCount },
             });
           }, repoPath, importCtx);
+          // Phase 14 E1: Seed cross-file receiver types from ExportedTypeMap
+          // before call resolution — eliminates re-parse for single-hop imported receivers.
+          // NOTE: In the worker path, exportedTypeMap is empty during chunk processing
+          // (populated later in runCrossFileBindingPropagation). This block is latent —
+          // it activates only if incremental export collection is added per-chunk.
+          if (exportedTypeMap.size > 0 && ctx.namedImportMap.size > 0) {
+            const { enrichedCount } = seedCrossFileReceiverTypes(
+              chunkWorkerData.calls, ctx.namedImportMap, exportedTypeMap,
+            );
+            if (isDev && enrichedCount > 0) {
+              console.log(`🔗 E1: Seeded ${enrichedCount} cross-file receiver types (chunk ${chunkIdx + 1})`);
+            }
+          }
           // Calls + Heritage + Routes — resolve in parallel (no shared mutable state between them)
           // This is safe because each writes disjoint relationship types into idempotent id-keyed Maps,
           // and the single-threaded event loop prevents races between synchronous addRelationship calls.
@@ -277,6 +637,14 @@ export const runPipelineFromRepo = async (
               },
             ),
           ]);
+          // Process field write assignments (synchronous, runs after calls resolve)
+          if (chunkWorkerData.assignments?.length) {
+            processAssignmentsFromExtracted(graph, chunkWorkerData.assignments, ctx, chunkWorkerData.constructorBindings);
+          }
+          // Collect TypeEnv file-scope bindings for exported type enrichment
+          if (chunkWorkerData.typeEnvBindings?.length) {
+            workerTypeEnvBindings.push(...chunkWorkerData.typeEnvBindings);
+          }
         } else {
           await processImports(graph, chunkFiles, astCache, ctx, undefined, repoPath, allPaths);
           sequentialChunkPaths.push(chunkPaths);
@@ -299,7 +667,7 @@ export const runPipelineFromRepo = async (
         .filter(p => chunkContents.has(p))
         .map(p => ({ path: p, content: chunkContents.get(p)! }));
       astCache = createASTCache(chunkFiles.length);
-      const rubyHeritage = await processCalls(graph, chunkFiles, astCache, ctx);
+      const rubyHeritage = await processCalls(graph, chunkFiles, astCache, ctx, undefined, exportedTypeMap);
       await processHeritage(graph, chunkFiles, astCache, ctx);
       if (rubyHeritage.length > 0) {
         await processHeritageFromExtracted(graph, rubyHeritage, ctx);
@@ -315,137 +683,187 @@ export const runPipelineFromRepo = async (
       console.log(`🔍 Resolution cache: ${rcStats.cacheHits} hits, ${rcStats.cacheMisses} misses (${hitRate}% hit rate)`);
     }
 
+    // ── Worker path quality enrichment: merge TypeEnv file-scope bindings into ExportedTypeMap ──
+    // Workers return file-scope bindings from their TypeEnv fixpoint (includes inferred types
+    // like `const config = getConfig()` → Config). Filter by graph isExported to match
+    // the sequential path's collectExportedBindings behavior.
+    if (workerTypeEnvBindings.length > 0) {
+      let enriched = 0;
+      for (const { filePath, bindings } of workerTypeEnvBindings) {
+        for (const [name, type] of bindings) {
+          // Verify the symbol is exported via graph node
+          const nodeId = `Function:${filePath}:${name}`;
+          const varNodeId = `Variable:${filePath}:${name}`;
+          const constNodeId = `Const:${filePath}:${name}`;
+          const node = graph.getNode(nodeId) ?? graph.getNode(varNodeId) ?? graph.getNode(constNodeId);
+          if (!node?.properties?.isExported) continue;
+
+          let fileExports = exportedTypeMap.get(filePath);
+          if (!fileExports) { fileExports = new Map(); exportedTypeMap.set(filePath, fileExports); }
+          // Don't overwrite existing entries (Tier 0 from SymbolTable is authoritative)
+          if (!fileExports.has(name)) {
+            fileExports.set(name, type);
+            enriched++;
+          }
+        }
+      }
+      if (isDev && enriched > 0) {
+        console.log(`🔗 Worker TypeEnv enrichment: ${enriched} fixpoint-inferred exports added to ExportedTypeMap`);
+      }
+    }
+
+    // ── Phase 14 pre-pass: Synthesize namedImportMap for whole-module-import languages ──
+    // Go, Ruby, C/C++, Swift import all exported symbols from a file.
+    // Expand ImportMap edges into per-symbol namedImportMap entries so Phase 14 can
+    // propagate types cross-file for these languages.
+    const synthesized = synthesizeWildcardImportBindings(graph, ctx);
+    if (isDev && synthesized > 0) {
+      console.log(`🔗 Synthesized ${synthesized} wildcard import bindings (Go/Ruby/C++/Swift)`);
+    }
+
+    // ── Phase 14: Cross-file binding propagation ──────────────────────
+    await runCrossFileBindingPropagation(
+      graph, ctx, exportedTypeMap, allPaths, totalFiles, repoPath, pipelineStart, onProgress,
+    );
+
     // Free import resolution context — suffix index + resolve cache no longer needed
     // (allPathObjects and importCtx hold ~94MB+ for large repos)
     allPathObjects.length = 0;
     importCtx.resolveCache.clear();
-    (importCtx as any).suffixIndex = null;
-    (importCtx as any).normalizedFileList = null;
+    importCtx.index = EMPTY_INDEX; // Release suffix index memory (~30MB for large repos)
+    importCtx.normalizedFileList = [];
 
-    // ── Phase 4.5: Method Resolution Order ──────────────────────────────
-    onProgress({
-      phase: 'parsing',
-      percent: 81,
-      message: 'Computing method resolution order...',
-      stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
-    });
+    let communityResult: Awaited<ReturnType<typeof processCommunities>> | undefined;
+    let processResult: Awaited<ReturnType<typeof processProcesses>> | undefined;
 
-    const mroResult = computeMRO(graph);
-    if (isDev && mroResult.entries.length > 0) {
-      console.log(`🔀 MRO: ${mroResult.entries.length} classes analyzed, ${mroResult.ambiguityCount} ambiguities found, ${mroResult.overrideEdges} OVERRIDES edges`);
-    }
-
-    // ── Phase 5: Communities ───────────────────────────────────────────
-    onProgress({
-      phase: 'communities',
-      percent: 82,
-      message: 'Detecting code communities...',
-      stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
-    });
-
-    const communityResult = await processCommunities(graph, (message, progress) => {
-      const communityProgress = 82 + (progress * 0.10);
+    if (!options?.skipGraphPhases) {
+      // ── Phase 4.5: Method Resolution Order ──────────────────────────────
       onProgress({
-        phase: 'communities',
-        percent: Math.round(communityProgress),
-        message,
+        phase: 'parsing',
+        percent: 81,
+        message: 'Computing method resolution order...',
         stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
       });
-    });
 
-    if (isDev) {
-      console.log(`🏘️ Community detection: ${communityResult.stats.totalCommunities} communities found (modularity: ${communityResult.stats.modularity.toFixed(3)})`);
-    }
+      const mroResult = computeMRO(graph);
+      if (isDev && mroResult.entries.length > 0) {
+        console.log(`🔀 MRO: ${mroResult.entries.length} classes analyzed, ${mroResult.ambiguityCount} ambiguities found, ${mroResult.overrideEdges} OVERRIDES edges`);
+      }
 
-    communityResult.communities.forEach(comm => {
-      graph.addNode({
-        id: comm.id,
-        label: 'Community' as const,
-        properties: {
-          name: comm.label,
-          filePath: '',
-          heuristicLabel: comm.heuristicLabel,
-          cohesion: comm.cohesion,
-          symbolCount: comm.symbolCount,
-        }
+      // ── Phase 5: Communities ───────────────────────────────────────────
+      onProgress({
+        phase: 'communities',
+        percent: 82,
+        message: 'Detecting code communities...',
+        stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
       });
-    });
 
-    communityResult.memberships.forEach(membership => {
-      graph.addRelationship({
-        id: `${membership.nodeId}_member_of_${membership.communityId}`,
-        type: 'MEMBER_OF',
-        sourceId: membership.nodeId,
-        targetId: membership.communityId,
-        confidence: 1.0,
-        reason: 'leiden-algorithm',
-      });
-    });
-
-    // ── Phase 6: Processes ─────────────────────────────────────────────
-    onProgress({
-      phase: 'processes',
-      percent: 94,
-      message: 'Detecting execution flows...',
-      stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
-    });
-
-    let symbolCount = 0;
-    graph.forEachNode(n => { if (n.label !== 'File') symbolCount++; });
-    const dynamicMaxProcesses = Math.max(20, Math.min(300, Math.round(symbolCount / 10)));
-
-    const processResult = await processProcesses(
-      graph,
-      communityResult.memberships,
-      (message, progress) => {
-        const processProgress = 94 + (progress * 0.05);
+      communityResult = await processCommunities(graph, (message, progress) => {
+        const communityProgress = 82 + (progress * 0.10);
         onProgress({
-          phase: 'processes',
-          percent: Math.round(processProgress),
+          phase: 'communities',
+          percent: Math.round(communityProgress),
           message,
           stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
         });
-      },
-      { maxProcesses: dynamicMaxProcesses, minSteps: 3 }
-    );
+      });
 
-    if (isDev) {
-      console.log(`🔄 Process detection: ${processResult.stats.totalProcesses} processes found (${processResult.stats.crossCommunityCount} cross-community)`);
+      if (isDev) {
+        console.log(`🏘️ Community detection: ${communityResult.stats.totalCommunities} communities found (modularity: ${communityResult.stats.modularity.toFixed(3)})`);
+      }
+
+      communityResult.communities.forEach(comm => {
+        graph.addNode({
+          id: comm.id,
+          label: 'Community' as const,
+          properties: {
+            name: comm.label,
+            filePath: '',
+            heuristicLabel: comm.heuristicLabel,
+            cohesion: comm.cohesion,
+            symbolCount: comm.symbolCount,
+          }
+        });
+      });
+
+      communityResult.memberships.forEach(membership => {
+        graph.addRelationship({
+          id: `${membership.nodeId}_member_of_${membership.communityId}`,
+          type: 'MEMBER_OF',
+          sourceId: membership.nodeId,
+          targetId: membership.communityId,
+          confidence: 1.0,
+          reason: 'leiden-algorithm',
+        });
+      });
+
+      // ── Phase 6: Processes ─────────────────────────────────────────────
+      onProgress({
+        phase: 'processes',
+        percent: 94,
+        message: 'Detecting execution flows...',
+        stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
+      });
+
+      let symbolCount = 0;
+      graph.forEachNode(n => { if (n.label !== 'File') symbolCount++; });
+      const dynamicMaxProcesses = Math.max(20, Math.min(300, Math.round(symbolCount / 10)));
+
+      processResult = await processProcesses(
+        graph,
+        communityResult.memberships,
+        (message, progress) => {
+          const processProgress = 94 + (progress * 0.05);
+          onProgress({
+            phase: 'processes',
+            percent: Math.round(processProgress),
+            message,
+            stats: { filesProcessed: totalFiles, totalFiles, nodesCreated: graph.nodeCount },
+          });
+        },
+        { maxProcesses: dynamicMaxProcesses, minSteps: 3 }
+      );
+
+      if (isDev) {
+        console.log(`🔄 Process detection: ${processResult.stats.totalProcesses} processes found (${processResult.stats.crossCommunityCount} cross-community)`);
+      }
+
+      processResult.processes.forEach(proc => {
+        graph.addNode({
+          id: proc.id,
+          label: 'Process' as const,
+          properties: {
+            name: proc.label,
+            filePath: '',
+            heuristicLabel: proc.heuristicLabel,
+            processType: proc.processType,
+            stepCount: proc.stepCount,
+            communities: proc.communities,
+            entryPointId: proc.entryPointId,
+            terminalId: proc.terminalId,
+          }
+        });
+      });
+
+      processResult.steps.forEach(step => {
+        graph.addRelationship({
+          id: `${step.nodeId}_step_${step.step}_${step.processId}`,
+          type: 'STEP_IN_PROCESS',
+          sourceId: step.nodeId,
+          targetId: step.processId,
+          confidence: 1.0,
+          reason: 'trace-detection',
+          step: step.step,
+        });
+      });
     }
 
-    processResult.processes.forEach(proc => {
-      graph.addNode({
-        id: proc.id,
-        label: 'Process' as const,
-        properties: {
-          name: proc.label,
-          filePath: '',
-          heuristicLabel: proc.heuristicLabel,
-          processType: proc.processType,
-          stepCount: proc.stepCount,
-          communities: proc.communities,
-          entryPointId: proc.entryPointId,
-          terminalId: proc.terminalId,
-        }
-      });
-    });
-
-    processResult.steps.forEach(step => {
-      graph.addRelationship({
-        id: `${step.nodeId}_step_${step.step}_${step.processId}`,
-        type: 'STEP_IN_PROCESS',
-        sourceId: step.nodeId,
-        targetId: step.processId,
-        confidence: 1.0,
-        reason: 'trace-detection',
-        step: step.step,
-      });
-    });
-
     onProgress({
       phase: 'complete',
       percent: 100,
-      message: `Graph complete! ${communityResult.stats.totalCommunities} communities, ${processResult.stats.totalProcesses} processes detected.`,
+      message: communityResult && processResult
+        ? `Graph complete! ${communityResult.stats.totalCommunities} communities, ${processResult.stats.totalProcesses} processes detected.`
+        : 'Graph complete! (graph phases skipped)',
       stats: {
         filesProcessed: totalFiles,
         totalFiles,
diff --git a/gitnexus/src/core/ingestion/resolution-context.ts b/gitnexus/src/core/ingestion/resolution-context.ts
index bac5bfb94..7184bd954 100644
--- a/gitnexus/src/core/ingestion/resolution-context.ts
+++ b/gitnexus/src/core/ingestion/resolution-context.ts
@@ -81,10 +81,10 @@ export const createResolutionContext = (): ResolutionContext => {
   // --- Core resolution (single implementation of tier logic) ---
 
   const resolveUncached = (name: string, fromFile: string): TieredCandidates | null => {
-    // Tier 1: Same file — authoritative match
-    const localDef = symbols.lookupExactFull(fromFile, name);
-    if (localDef) {
-      return { candidates: [localDef], tier: 'same-file' };
+    // Tier 1: Same file — authoritative match (returns all overloads)
+    const localDefs = symbols.lookupExactAll(fromFile, name);
+    if (localDefs.length > 0) {
+      return { candidates: localDefs, tier: 'same-file' };
     }
 
     // Get all global definitions for subsequent tiers
diff --git a/gitnexus/src/core/ingestion/resolvers/index.ts b/gitnexus/src/core/ingestion/resolvers/index.ts
index b1d6cabf1..adcdc1b8d 100644
--- a/gitnexus/src/core/ingestion/resolvers/index.ts
+++ b/gitnexus/src/core/ingestion/resolvers/index.ts
@@ -3,7 +3,7 @@
  * Extracted from import-processor.ts for maintainability.
  */
 
-export { EXTENSIONS, tryResolveWithExtensions, buildSuffixIndex, suffixResolve } from './utils.js';
+export { EXTENSIONS, tryResolveWithExtensions, buildSuffixIndex, suffixResolve, EMPTY_INDEX } from './utils.js';
 export type { SuffixIndex } from './utils.js';
 
 export { KOTLIN_EXTENSIONS, appendKotlinWildcard, resolveJvmWildcard, resolveJvmMemberImport } from './jvm.js';
@@ -21,5 +21,7 @@ export { resolveRustImport, tryRustModulePath } from './rust.js';
 
 export { resolveRubyImport } from './ruby.js';
 
+export { resolvePythonImport } from './python.js';
+
 export { resolveImportPath, RESOLVE_CACHE_CAP } from './standard.js';
 export type { TsconfigPaths } from './standard.js';
diff --git a/gitnexus/src/core/ingestion/resolvers/jvm.ts b/gitnexus/src/core/ingestion/resolvers/jvm.ts
index 5b532e47e..bd0f2f935 100644
--- a/gitnexus/src/core/ingestion/resolvers/jvm.ts
+++ b/gitnexus/src/core/ingestion/resolvers/jvm.ts
@@ -4,6 +4,7 @@
  */
 
 import type { SuffixIndex } from './utils.js';
+import type { SyntaxNode } from '../utils.js';
 
 /** Kotlin file extensions for JVM resolver reuse */
 export const KOTLIN_EXTENSIONS: readonly string[] = ['.kt', '.kts'];
@@ -12,7 +13,7 @@ export const KOTLIN_EXTENSIONS: readonly string[] = ['.kt', '.kts'];
  * Append .* to a Kotlin import path if the AST has a wildcard_import sibling node.
  * Pure function — returns a new string without mutating the input.
  */
-export const appendKotlinWildcard = (importPath: string, importNode: any): string => {
+export const appendKotlinWildcard = (importPath: string, importNode: SyntaxNode): string => {
   for (let i = 0; i < importNode.childCount; i++) {
     if (importNode.child(i)?.type === 'wildcard_import') {
       return importPath.endsWith('.*') ? importPath : `${importPath}.*`;
@@ -39,26 +40,39 @@ export function resolveJvmWildcard(
     const candidates = extensions.flatMap(ext => index.getFilesInDir(packagePath, ext));
     // Filter to only direct children (no subdirectories)
     const packageSuffix = '/' + packagePath + '/';
+    const packagePrefix = packagePath + '/';
     return candidates.filter(f => {
       const normalized = f.replace(/\\/g, '/');
-      const idx = normalized.indexOf(packageSuffix);
-      if (idx < 0) return false;
-      const afterPkg = normalized.substring(idx + packageSuffix.length);
+      // Match both nested (src/models/User.kt) and root-level (models/User.kt) packages
+      let afterPkg: string;
+      const idx = normalized.lastIndexOf(packageSuffix);
+      if (idx >= 0) {
+        afterPkg = normalized.substring(idx + packageSuffix.length);
+      } else if (normalized.startsWith(packagePrefix)) {
+        afterPkg = normalized.substring(packagePrefix.length);
+      } else {
+        return false;
+      }
       return !afterPkg.includes('/');
     });
   }
 
   // Fallback: linear scan
   const packageSuffix = '/' + packagePath + '/';
+  const packagePrefix = packagePath + '/';
   const matches: string[] = [];
   for (let i = 0; i < normalizedFileList.length; i++) {
     const normalized = normalizedFileList[i];
-    if (normalized.includes(packageSuffix) &&
-        extensions.some(ext => normalized.endsWith(ext))) {
-      const afterPackage = normalized.substring(normalized.indexOf(packageSuffix) + packageSuffix.length);
-      if (!afterPackage.includes('/')) {
-        matches.push(allFileList[i]);
-      }
+    if (!extensions.some(ext => normalized.endsWith(ext))) continue;
+    // Match both nested (src/models/User.kt) and root-level (models/User.kt) packages
+    let afterPackage: string | null = null;
+    if (normalized.includes(packageSuffix)) {
+      afterPackage = normalized.substring(normalized.lastIndexOf(packageSuffix) + packageSuffix.length);
+    } else if (normalized.startsWith(packagePrefix)) {
+      afterPackage = normalized.substring(packagePrefix.length);
+    }
+    if (afterPackage !== null && !afterPackage.includes('/')) {
+      matches.push(allFileList[i]);
     }
   }
   return matches;
diff --git a/gitnexus/src/core/ingestion/resolvers/php.ts b/gitnexus/src/core/ingestion/resolvers/php.ts
index c05ef4e6d..a893cb485 100644
--- a/gitnexus/src/core/ingestion/resolvers/php.ts
+++ b/gitnexus/src/core/ingestion/resolvers/php.ts
@@ -10,11 +10,34 @@ import { suffixResolve } from './utils.js';
 export interface ComposerConfig {
   /** Map of namespace prefix -> directory (e.g., "App\\" -> "app/") */
   psr4: Map<string, string>;
+  /** PSR-4 entries sorted by namespace length descending (longest match wins).
+   *  Cached once at config load time to avoid re-sorting on every import. */
+  psr4Sorted?: readonly [string, string][];
+}
+
+/** Get or compute the sorted PSR-4 entries (cached after first call). */
+function getSortedPsr4(config: ComposerConfig): readonly [string, string][] {
+  if (!config.psr4Sorted) {
+    const sorted = [...config.psr4.entries()].sort((a, b) => b[0].length - a[0].length);
+    config.psr4Sorted = sorted;
+  }
+  return config.psr4Sorted;
 }
 
 /**
  * Resolve a PHP use-statement import path using PSR-4 mappings.
  * e.g. "App\Http\Controllers\UserController" -> "app/Http/Controllers/UserController.php"
+ *
+ * For function/constant imports (use function App\Models\getUser), the last
+ * segment is the symbol name, not a class name, so it may not map directly to
+ * a file. When PSR-4 class-style resolution fails, we fall back to scanning
+ * .php files in the namespace directory.
+ *
+ * NOTE: The function-import fallback returns the first matching .php file in the
+ * namespace directory. When multiple files exist in the same namespace directory,
+ * resolution is non-deterministic (depends on Set/index iteration order). This is
+ * a known limitation — PHP function imports cannot be resolved to a specific file
+ * without parsing all candidate files.
  */
 export function resolvePhpImport(
   importPath: string,
@@ -27,20 +50,44 @@ export function resolvePhpImport(
   // Normalize: replace backslashes with forward slashes
   const normalized = importPath.replace(/\\/g, '/');
 
-  // Try PSR-4 resolution if composer.json was found
+  // Reject path traversal attempts (defense-in-depth — walker whitelist also prevents this)
+  if (normalized.includes('..')) return null;
+
   if (composerConfig) {
-    // Sort namespaces by length descending (longest match wins)
-    const sorted = [...composerConfig.psr4.entries()].sort((a, b) => b[0].length - a[0].length);
+    const sorted = getSortedPsr4(composerConfig);
     for (const [nsPrefix, dirPrefix] of sorted) {
       const nsPrefixSlash = nsPrefix.replace(/\\/g, '/');
       if (normalized.startsWith(nsPrefixSlash + '/') || normalized === nsPrefixSlash) {
         const remainder = normalized.slice(nsPrefixSlash.length).replace(/^\//, '');
+
+        // 1. Try class-style PSR-4: full path → file (e.g. App\Models\User → app/Models/User.php)
         const filePath = dirPrefix + (remainder ? '/' + remainder : '') + '.php';
         if (allFiles.has(filePath)) return filePath;
         if (index) {
           const result = index.getInsensitive(filePath);
           if (result) return result;
         }
+
+        // 2. Function/constant fallback: strip last segment (symbol name), scan namespace directory.
+        //    e.g. App\Models\getUser → directory app/Models/, find first .php file in that dir.
+        const lastSlash = remainder.lastIndexOf('/');
+        const nsDir = lastSlash >= 0
+          ? dirPrefix + '/' + remainder.slice(0, lastSlash)
+          : dirPrefix;
+
+        // Prefer SuffixIndex directory lookup (O(log n + matches)) over linear scan
+        if (index) {
+          const candidates = index.getFilesInDir(nsDir, '.php');
+          if (candidates.length > 0) return candidates[0];
+        }
+
+        // Fallback: linear scan (only when SuffixIndex unavailable)
+        const nsDirPrefix = nsDir.endsWith('/') ? nsDir : nsDir + '/';
+        for (const f of allFiles) {
+          if (f.startsWith(nsDirPrefix) && f.endsWith('.php') && !f.slice(nsDirPrefix.length).includes('/')) {
+            return f;
+          }
+        }
       }
     }
   }
diff --git a/gitnexus/src/core/ingestion/resolvers/python.ts b/gitnexus/src/core/ingestion/resolvers/python.ts
new file mode 100644
index 000000000..0e92b3e6d
--- /dev/null
+++ b/gitnexus/src/core/ingestion/resolvers/python.ts
@@ -0,0 +1,59 @@
+/**
+ * Python import resolution — PEP 328 relative imports and proximity-based bare imports.
+ * Import system spec: PEP 302 (original), PEP 451 (current).
+ */
+
+import { tryResolveWithExtensions } from './utils.js';
+
+/**
+ * Resolve a Python import to a file path.
+ *
+ * 1. Relative (PEP 328): `.module`, `..module` — 1 dot = current package, each extra dot goes up one level.
+ * 2. Proximity bare import: static heuristic — checks the importer's own directory first.
+ *    Approximates the common case where co-located files find each other without an installed package.
+ *    Single-segment only — multi-segment (e.g. `os.path`) falls through to suffixResolve.
+ *    Checks package (__init__.py) before module (.py), matching CPython's finder order (PEP 451 §4).
+ *    Coexistence of both is physically impossible (same name = file vs directory), so the order
+ *    only matters for spec compliance.
+ *    Note: namespace packages (PEP 420, directory without __init__.py) are not handled.
+ *
+ * Returns null to let the caller fall through to suffixResolve.
+ */
+export function resolvePythonImport(
+  currentFile: string,
+  importPath: string,
+  allFiles: Set<string>,
+): string | null {
+  // Relative import — PEP 328 (https://peps.python.org/pep-0328/)
+  if (importPath.startsWith('.')) {
+    const dotMatch = importPath.match(/^(\.+)(.*)/);
+    if (!dotMatch) return null;
+
+    const dotCount = dotMatch[1].length;
+    const modulePart = dotMatch[2];
+    const dirParts = currentFile.split('/').slice(0, -1);
+
+    // PEP 328: more dots than directory levels → beyond top-level package → invalid
+    if (dotCount - 1 > dirParts.length) return null;
+    for (let i = 1; i < dotCount; i++) dirParts.pop();
+
+    if (modulePart) {
+      dirParts.push(...modulePart.replace(/\./g, '/').split('/'));
+    }
+
+    return tryResolveWithExtensions(dirParts.join('/'), allFiles);
+  }
+
+  // Proximity bare import — single-segment only; package before module (PEP 451 §4)
+  const pathLike = importPath.replace(/\./g, '/');
+  if (pathLike.includes('/')) return null;
+
+  // Normalize for Windows backslashes
+  const importerDir = currentFile.replace(/\\/g, '/').split('/').slice(0, -1).join('/');
+  if (!importerDir) return null;
+
+  if (allFiles.has(`${importerDir}/${pathLike}/__init__.py`)) return `${importerDir}/${pathLike}/__init__.py`;
+  if (allFiles.has(`${importerDir}/${pathLike}.py`)) return `${importerDir}/${pathLike}.py`;
+
+  return null;
+}
diff --git a/gitnexus/src/core/ingestion/resolvers/standard.ts b/gitnexus/src/core/ingestion/resolvers/standard.ts
index 332ae0485..c6809e49d 100644
--- a/gitnexus/src/core/ingestion/resolvers/standard.ts
+++ b/gitnexus/src/core/ingestion/resolvers/standard.ts
@@ -113,32 +113,6 @@ export const resolveImportPath = (
     // Fall through to generic resolution if Rust-specific didn't match
   }
 
-  // ---- Python relative imports (PEP 328): .module, ..module, ... ----
-  if (language === SupportedLanguages.Python && importPath.startsWith('.')) {
-    const dotMatch = importPath.match(/^(\.+)(.*)/);
-    if (dotMatch) {
-      const dotCount = dotMatch[1].length;
-      const modulePart = dotMatch[2]; // e.g., "models" from ".models"
-      const dirParts = currentFile.split('/').slice(0, -1); // remove filename
-
-      // Navigate up: 1 dot = same package, 2 dots = parent package, etc.
-      // First dot means "current package", each additional dot goes up one level
-      for (let i = 1; i < dotCount; i++) {
-        dirParts.pop();
-      }
-
-      if (modulePart) {
-        // from .models import User → resolve "models" relative to current package
-        const modulePath = modulePart.replace(/\./g, '/');
-        dirParts.push(...modulePath.split('/'));
-      }
-
-      const basePath = dirParts.join('/');
-      const resolved = tryResolveWithExtensions(basePath, allFiles);
-      return cache(resolved);
-    }
-  }
-
   // ---- Generic relative import resolution (./ and ../) ----
   const currentDir = currentFile.split('/').slice(0, -1);
   const parts = importPath.split('/');
diff --git a/gitnexus/src/core/ingestion/resolvers/utils.ts b/gitnexus/src/core/ingestion/resolvers/utils.ts
index 3c7a1eb2e..b49eee8f8 100644
--- a/gitnexus/src/core/ingestion/resolvers/utils.ts
+++ b/gitnexus/src/core/ingestion/resolvers/utils.ts
@@ -3,6 +3,8 @@
  * Extracted from import-processor.ts to reduce file size.
  */
 
+import type { SyntaxNode } from '../utils.js';
+
 /** All file extensions to try during resolution */
 export const EXTENSIONS = [
   '',
@@ -63,6 +65,15 @@ export interface SuffixIndex {
   getFilesInDir(dirSuffix: string, extension: string): string[];
 }
 
+const FROZEN_EMPTY_ARRAY: string[] = Object.freeze([]) as string[];
+
+/** Sentinel index that returns no results. Used to release memory after import resolution. */
+export const EMPTY_INDEX: SuffixIndex = Object.freeze({
+  get: () => undefined,
+  getInsensitive: () => undefined,
+  getFilesInDir: () => FROZEN_EMPTY_ARRAY,
+});
+
 export function buildSuffixIndex(normalizedFileList: string[], allFileList: string[]): SuffixIndex {
   // Map: normalized suffix -> original file path
   const exactMap = new Map<string, string>();
@@ -156,3 +167,12 @@ export function suffixResolve(
   }
   return null;
 }
+
+/** Find the first direct named child of a tree-sitter node matching the given type. */
+export function findChild(node: SyntaxNode, type: string): SyntaxNode | null {
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (child?.type === type) return child;
+  }
+  return null;
+}
diff --git a/gitnexus/src/core/ingestion/symbol-table.ts b/gitnexus/src/core/ingestion/symbol-table.ts
index 845911395..f91fb8634 100644
--- a/gitnexus/src/core/ingestion/symbol-table.ts
+++ b/gitnexus/src/core/ingestion/symbol-table.ts
@@ -1,11 +1,22 @@
+import type { NodeLabel } from '../graph/types.js';
+
 export interface SymbolDefinition {
   nodeId: string;
   filePath: string;
-  type: string; // 'Function', 'Class', etc.
+  type: NodeLabel;
   parameterCount?: number;
+  /** Number of required (non-optional, non-default) parameters.
+   *  Enables range-based arity filtering: argCount >= requiredParameterCount && argCount <= parameterCount. */
+  requiredParameterCount?: number;
+  /** Per-parameter type names for overload disambiguation (e.g. ['int', 'String']).
+   *  Populated when parameter types are resolvable from AST (any typed language).
+   *  Used for disambiguation in overloading languages (Java, Kotlin, C#, C++). */
+  parameterTypes?: string[];
   /** Raw return type text extracted from AST (e.g. 'User', 'Promise<User>') */
   returnType?: string;
-  /** Links Method/Constructor to owning Class/Struct/Trait nodeId */
+  /** Declared type for non-callable symbols — fields/properties (e.g. 'Address', 'List<User>') */
+  declaredType?: string;
+  /** Links Method/Constructor/Property to owning Class/Struct/Trait nodeId */
   ownerId?: string;
 }
 
@@ -17,10 +28,10 @@ export interface SymbolTable {
     filePath: string,
     name: string,
     nodeId: string,
-    type: string,
-    metadata?: { parameterCount?: number; returnType?: string; ownerId?: string }
+    type: NodeLabel,
+    metadata?: { parameterCount?: number; requiredParameterCount?: number; parameterTypes?: string[]; returnType?: string; declaredType?: string; ownerId?: string }
   ) => void;
-  
+
   /**
    * High Confidence: Look for a symbol specifically inside a file
    * Returns the Node ID if found
@@ -30,15 +41,37 @@ export interface SymbolTable {
   /**
    * High Confidence: Look for a symbol in a specific file, returning full definition.
    * Includes type information needed for heritage resolution (Class vs Interface).
+   * Returns first matching definition — use lookupExactAll for overloaded methods.
    */
   lookupExactFull: (filePath: string, name: string) => SymbolDefinition | undefined;
 
+  /**
+   * High Confidence: Look for ALL symbols with this name in a specific file.
+   * Returns all definitions, including overloaded methods with the same name.
+   * Used by resolution-context to pass all same-file overloads to candidate filtering.
+   */
+  lookupExactAll: (filePath: string, name: string) => SymbolDefinition[];
+
   /**
    * Low Confidence: Look for a symbol anywhere in the project
    * Used when imports are missing or for framework magic
    */
   lookupFuzzy: (name: string) => SymbolDefinition[];
-  
+
+  /**
+   * Low Confidence: Look for callable symbols (Function/Method/Constructor) by name.
+   * Faster than `lookupFuzzy` + filter — backed by a lazy callable-only index.
+   * Used by ReturnTypeLookup to resolve callee → return type.
+   */
+  lookupFuzzyCallable: (name: string) => SymbolDefinition[];
+
+  /**
+   * Look up a field/property by its owning class nodeId and field name.
+   * O(1) via dedicated eagerly-populated index keyed by `ownerNodeId\0fieldName`.
+   * Returns undefined when no matching property exists or the owner is ambiguous.
+   */
+  lookupFieldByOwner: (ownerNodeId: string, fieldName: string) => SymbolDefinition | undefined;
+
   /**
    * Debugging: See how many symbols are tracked
    */
@@ -51,27 +84,42 @@ export interface SymbolTable {
 }
 
 export const createSymbolTable = (): SymbolTable => {
-  // 1. File-Specific Index — stores full SymbolDefinition for O(1) lookupExactFull
-  // Structure: FilePath -> (SymbolName -> SymbolDefinition)
-  const fileIndex = new Map<string, Map<string, SymbolDefinition>>();
+  // 1. File-Specific Index — stores full SymbolDefinition(s) for O(1) lookup.
+  // Structure: FilePath -> (SymbolName -> SymbolDefinition[])
+  // Array allows overloaded methods (same name, different signatures) to coexist.
+  const fileIndex = new Map<string, Map<string, SymbolDefinition[]>>();
 
   // 2. Global Reverse Index (The "Backup")
   // Structure: SymbolName -> [List of Definitions]
   const globalIndex = new Map<string, SymbolDefinition[]>();
 
+  // 3. Lazy Callable Index — populated on first lookupFuzzyCallable call.
+  // Structure: SymbolName -> [Callable Definitions]
+  // Only Function, Method, Constructor symbols are indexed.
+  let callableIndex: Map<string, SymbolDefinition[]> | null = null;
+
+  // 4. Eagerly-populated Field/Property Index — keyed by "ownerNodeId\0fieldName".
+  // Only Property symbols with ownerId and declaredType are indexed.
+  const fieldByOwner = new Map<string, SymbolDefinition>();
+
+  const CALLABLE_TYPES = new Set(['Function', 'Method', 'Constructor']);
+
   const add = (
     filePath: string,
     name: string,
     nodeId: string,
-    type: string,
-    metadata?: { parameterCount?: number; returnType?: string; ownerId?: string }
+    type: NodeLabel,
+    metadata?: { parameterCount?: number; requiredParameterCount?: number; parameterTypes?: string[]; returnType?: string; declaredType?: string; ownerId?: string }
   ) => {
     const def: SymbolDefinition = {
       nodeId,
       filePath,
       type,
       ...(metadata?.parameterCount !== undefined ? { parameterCount: metadata.parameterCount } : {}),
+      ...(metadata?.requiredParameterCount !== undefined ? { requiredParameterCount: metadata.requiredParameterCount } : {}),
+      ...(metadata?.parameterTypes !== undefined ? { parameterTypes: metadata.parameterTypes } : {}),
       ...(metadata?.returnType !== undefined ? { returnType: metadata.returnType } : {}),
+      ...(metadata?.declaredType !== undefined ? { declaredType: metadata.declaredType } : {}),
       ...(metadata?.ownerId !== undefined ? { ownerId: metadata.ownerId } : {}),
     };
 
@@ -79,27 +127,69 @@ export const createSymbolTable = (): SymbolTable => {
     if (!fileIndex.has(filePath)) {
       fileIndex.set(filePath, new Map());
     }
-    fileIndex.get(filePath)!.set(name, def);
+    const fileMap = fileIndex.get(filePath)!;
+    if (!fileMap.has(name)) {
+      fileMap.set(name, [def]);
+    } else {
+      fileMap.get(name)!.push(def);
+    }
 
-    // B. Add to Global Index (same object reference)
+    // B. Properties go to fieldByOwner index only — skip globalIndex to prevent
+    // namespace pollution for common names like 'id', 'name', 'type'.
+    // Index ALL properties (even without declaredType) so write-access tracking
+    // can resolve field ownership for dynamically-typed languages (Ruby, JS).
+    if (type === 'Property' && metadata?.ownerId) {
+      fieldByOwner.set(`${metadata.ownerId}\0${name}`, def);
+      // Still add to fileIndex above (for lookupExact), but skip globalIndex
+      return;
+    }
+
+    // C. Add to Global Index (same object reference)
     if (!globalIndex.has(name)) {
       globalIndex.set(name, []);
     }
     globalIndex.get(name)!.push(def);
+
+    // D. Invalidate the lazy callable index only when adding callable types
+    if (CALLABLE_TYPES.has(type)) {
+      callableIndex = null;
+    }
   };
 
   const lookupExact = (filePath: string, name: string): string | undefined => {
-    return fileIndex.get(filePath)?.get(name)?.nodeId;
+    const defs = fileIndex.get(filePath)?.get(name);
+    return defs?.[0]?.nodeId;
   };
 
   const lookupExactFull = (filePath: string, name: string): SymbolDefinition | undefined => {
-    return fileIndex.get(filePath)?.get(name);
+    const defs = fileIndex.get(filePath)?.get(name);
+    return defs?.[0];
+  };
+
+  const lookupExactAll = (filePath: string, name: string): SymbolDefinition[] => {
+    return fileIndex.get(filePath)?.get(name) ?? [];
   };
 
   const lookupFuzzy = (name: string): SymbolDefinition[] => {
     return globalIndex.get(name) || [];
   };
 
+  const lookupFuzzyCallable = (name: string): SymbolDefinition[] => {
+    if (!callableIndex) {
+      // Build the callable index lazily on first use
+      callableIndex = new Map();
+      for (const [symName, defs] of globalIndex) {
+        const callables = defs.filter(d => CALLABLE_TYPES.has(d.type));
+        if (callables.length > 0) callableIndex.set(symName, callables);
+      }
+    }
+    return callableIndex.get(name) ?? [];
+  };
+
+  const lookupFieldByOwner = (ownerNodeId: string, fieldName: string): SymbolDefinition | undefined => {
+    return fieldByOwner.get(`${ownerNodeId}\0${fieldName}`);
+  };
+
   const getStats = () => ({
     fileCount: fileIndex.size,
     globalSymbolCount: globalIndex.size
@@ -108,7 +198,9 @@ export const createSymbolTable = (): SymbolTable => {
   const clear = () => {
     fileIndex.clear();
     globalIndex.clear();
+    callableIndex = null;
+    fieldByOwner.clear();
   };
 
-  return { add, lookupExact, lookupExactFull, lookupFuzzy, getStats, clear };
+  return { add, lookupExact, lookupExactFull, lookupExactAll, lookupFuzzy, lookupFuzzyCallable, lookupFieldByOwner, getStats, clear };
 };
diff --git a/gitnexus/src/core/ingestion/tree-sitter-queries.ts b/gitnexus/src/core/ingestion/tree-sitter-queries.ts
index bedc50b2f..79b032462 100644
--- a/gitnexus/src/core/ingestion/tree-sitter-queries.ts
+++ b/gitnexus/src/core/ingestion/tree-sitter-queries.ts
@@ -19,6 +19,10 @@ export const TYPESCRIPT_QUERIES = `
 (function_declaration
   name: (identifier) @name) @definition.function
 
+; TypeScript overload signatures (function_signature is a separate node type from function_declaration)
+(function_signature
+  name: (identifier) @name) @definition.function
+
 (method_definition
   name: (property_identifier) @name) @definition.method
 
@@ -62,6 +66,19 @@ export const TYPESCRIPT_QUERIES = `
 (new_expression
   constructor: (identifier) @call.name) @call
 
+; Class properties — public_field_definition covers most TS class fields
+(public_field_definition
+  name: (property_identifier) @name) @definition.property
+
+; Private class fields: #address: Address
+(public_field_definition
+  name: (private_property_identifier) @name) @definition.property
+
+; Constructor parameter properties: constructor(public address: Address)
+(required_parameter
+  (accessibility_modifier)
+  pattern: (identifier) @name) @definition.property
+
 ; Heritage queries - class extends
 (class_declaration
   name: (type_identifier) @heritage.class
@@ -75,6 +92,20 @@ export const TYPESCRIPT_QUERIES = `
   (class_heritage
     (implements_clause
       (type_identifier) @heritage.implements))) @heritage.impl
+
+; Write access: obj.field = value
+(assignment_expression
+  left: (member_expression
+    object: (_) @assignment.receiver
+    property: (property_identifier) @assignment.property)
+  right: (_)) @assignment
+
+; Write access: obj.field += value (compound assignment)
+(augmented_assignment_expression
+  left: (member_expression
+    object: (_) @assignment.receiver
+    property: (property_identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // JavaScript queries - works with tree-sitter-javascript
@@ -128,12 +159,30 @@ export const JAVASCRIPT_QUERIES = `
 (new_expression
   constructor: (identifier) @call.name) @call
 
+; Class fields — field_definition captures JS class fields (class User { address = ... })
+(field_definition
+  property: (property_identifier) @name) @definition.property
+
 ; Heritage queries - class extends (JavaScript uses different AST than TypeScript)
 ; In tree-sitter-javascript, class_heritage directly contains the parent identifier
 (class_declaration
   name: (identifier) @heritage.class
   (class_heritage
     (identifier) @heritage.extends)) @heritage
+
+; Write access: obj.field = value
+(assignment_expression
+  left: (member_expression
+    object: (_) @assignment.receiver
+    property: (property_identifier) @assignment.property)
+  right: (_)) @assignment
+
+; Write access: obj.field += value (compound assignment)
+(augmented_assignment_expression
+  left: (member_expression
+    object: (_) @assignment.receiver
+    property: (property_identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // Python queries - works with tree-sitter-python
@@ -160,11 +209,33 @@ export const PYTHON_QUERIES = `
   function: (attribute
     attribute: (identifier) @call.name)) @call
 
+; Class attribute type annotations — PEP 526: address: Address or address: Address = Address()
+; Both bare annotations (address: Address) and annotated assignments (name: str = "test")
+; are parsed as (assignment left: ... type: ...) in tree-sitter-python.
+(expression_statement
+  (assignment
+    left: (identifier) @name
+    type: (type)) @definition.property)
+
 ; Heritage queries - Python class inheritance
 (class_definition
   name: (identifier) @heritage.class
   superclasses: (argument_list
     (identifier) @heritage.extends)) @heritage
+
+; Write access: obj.field = value
+(assignment
+  left: (attribute
+    object: (_) @assignment.receiver
+    attribute: (identifier) @assignment.property)
+  right: (_)) @assignment
+
+; Write access: obj.field += value (compound assignment)
+(augmented_assignment
+  left: (attribute
+    object: (_) @assignment.receiver
+    attribute: (identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // Java queries - works with tree-sitter-java
@@ -179,6 +250,11 @@ export const JAVA_QUERIES = `
 (method_declaration name: (identifier) @name) @definition.method
 (constructor_declaration name: (identifier) @name) @definition.constructor
 
+; Fields — typed field declarations inside class bodies
+(field_declaration
+  declarator: (variable_declarator
+    name: (identifier) @name)) @definition.property
+
 ; Imports - capture any import declaration child as source
 (import_declaration (_) @import.source) @import
 
@@ -196,6 +272,13 @@ export const JAVA_QUERIES = `
 ; Heritage - implements interfaces
 (class_declaration name: (identifier) @heritage.class
   (super_interfaces (type_list (type_identifier) @heritage.implements))) @heritage.impl
+
+; Write access: obj.field = value
+(assignment_expression
+  left: (field_access
+    object: (_) @assignment.receiver
+    field: (identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // C queries - works with tree-sitter-c
@@ -243,6 +326,11 @@ export const GO_QUERIES = `
 (import_declaration (import_spec path: (interpreted_string_literal) @import.source)) @import
 (import_declaration (import_spec_list (import_spec path: (interpreted_string_literal) @import.source))) @import
 
+; Struct fields — named field declarations inside struct types
+(field_declaration_list
+  (field_declaration
+    name: (field_identifier) @name) @definition.property)
+
 ; Struct embedding (anonymous fields = inheritance)
 (type_declaration
   (type_spec
@@ -258,6 +346,24 @@ export const GO_QUERIES = `
 
 ; Struct literal construction: User{Name: "Alice"}
 (composite_literal type: (type_identifier) @call.name) @call
+
+; Write access: obj.field = value
+(assignment_statement
+  left: (expression_list
+    (selector_expression
+      operand: (_) @assignment.receiver
+      field: (field_identifier) @assignment.property))
+  right: (_)) @assignment
+
+; Write access: obj.field++ / obj.field--
+(inc_statement
+  (selector_expression
+    operand: (_) @assignment.receiver
+    field: (field_identifier) @assignment.property)) @assignment
+(dec_statement
+  (selector_expression
+    operand: (_) @assignment.receiver
+    field: (field_identifier) @assignment.property)) @assignment
 `;
 
 // C++ queries - works with tree-sitter-cpp
@@ -299,8 +405,30 @@ export const CPP_QUERIES = `
 (declaration declarator: (function_declarator declarator: (identifier) @name)) @definition.function
 (declaration declarator: (pointer_declarator declarator: (function_declarator declarator: (identifier) @name))) @definition.function
 
-; Inline class method declarations (inside class body, no body: void Foo();)
-(field_declaration declarator: (function_declarator declarator: (identifier) @name)) @definition.method
+; Class/struct data member fields (Address address; int count;)
+; Uses field_identifier to exclude method declarations (which use function_declarator)
+(field_declaration
+  declarator: (field_identifier) @name) @definition.property
+
+; Pointer member fields (Address* address;)
+(field_declaration
+  declarator: (pointer_declarator
+    declarator: (field_identifier) @name)) @definition.property
+
+; Reference member fields (Address& address;)
+(field_declaration
+  declarator: (reference_declarator
+    (field_identifier) @name)) @definition.property
+
+; Inline class method declarations (inside class body, no body: void save();)
+; tree-sitter-cpp uses field_identifier (not identifier) for names inside class bodies
+(field_declaration declarator: (function_declarator declarator: [(field_identifier) (identifier)] @name)) @definition.method
+
+; Inline class method declarations returning a pointer (User* lookup();)
+(field_declaration declarator: (pointer_declarator declarator: (function_declarator declarator: [(field_identifier) (identifier)] @name))) @definition.method
+
+; Inline class method declarations returning a reference (User& lookup();)
+(field_declaration declarator: (reference_declarator (function_declarator declarator: [(field_identifier) (identifier)] @name))) @definition.method
 
 ; Inline class method definitions (inside class body, with body: void Foo() { ... })
 (field_declaration_list
@@ -308,6 +436,20 @@ export const CPP_QUERIES = `
     declarator: (function_declarator
       declarator: [(field_identifier) (identifier) (operator_name) (destructor_name)] @name)) @definition.method)
 
+; Inline class methods returning a pointer type (User* lookup(int id) { ... })
+(field_declaration_list
+  (function_definition
+    declarator: (pointer_declarator
+      declarator: (function_declarator
+        declarator: [(field_identifier) (identifier) (operator_name)] @name))) @definition.method)
+
+; Inline class methods returning a reference type (User& lookup(int id) { ... })
+(field_declaration_list
+  (function_definition
+    declarator: (reference_declarator
+      (function_declarator
+        declarator: [(field_identifier) (identifier) (operator_name)] @name))) @definition.method)
+
 ; Templates
 (template_declaration (class_specifier name: (type_identifier) @name)) @definition.template
 (template_declaration (function_definition declarator: (function_declarator declarator: (identifier) @name))) @definition.template
@@ -329,6 +471,14 @@ export const CPP_QUERIES = `
   (base_class_clause (type_identifier) @heritage.extends)) @heritage
 (class_specifier name: (type_identifier) @heritage.class
   (base_class_clause (access_specifier) (type_identifier) @heritage.extends)) @heritage
+
+; Write access: obj.field = value
+(assignment_expression
+  left: (field_expression
+    argument: (_) @assignment.receiver
+    field: (field_identifier) @assignment.property)
+  right: (_)) @assignment
+
 `;
 
 // C# queries - works with tree-sitter-c-sharp
@@ -383,6 +533,13 @@ export const CSHARP_QUERIES = `
   (base_list (identifier) @heritage.extends)) @heritage
 (class_declaration name: (identifier) @heritage.class
   (base_list (generic_name (identifier) @heritage.extends))) @heritage
+
+; Write access: obj.field = value
+(assignment_expression
+  left: (member_access_expression
+    expression: (_) @assignment.receiver
+    name: (identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // Rust queries - works with tree-sitter-rust
@@ -414,11 +571,30 @@ export const RUST_QUERIES = `
 ; Struct literal construction: User { name: value }
 (struct_expression name: (type_identifier) @call.name) @call
 
+; Struct fields — named field declarations inside struct bodies
+(field_declaration_list
+  (field_declaration
+    name: (field_identifier) @name) @definition.property)
+
 ; Heritage (trait implementation) — all combinations of concrete/generic trait × concrete/generic type
 (impl_item trait: (type_identifier) @heritage.trait type: (type_identifier) @heritage.class) @heritage
 (impl_item trait: (generic_type type: (type_identifier) @heritage.trait) type: (type_identifier) @heritage.class) @heritage
 (impl_item trait: (type_identifier) @heritage.trait type: (generic_type type: (type_identifier) @heritage.class)) @heritage
 (impl_item trait: (generic_type type: (type_identifier) @heritage.trait) type: (generic_type type: (type_identifier) @heritage.class)) @heritage
+
+; Write access: obj.field = value
+(assignment_expression
+  left: (field_expression
+    value: (_) @assignment.receiver
+    field: (field_identifier) @assignment.property)
+  right: (_)) @assignment
+
+; Write access: obj.field += value (compound assignment)
+(compound_assignment_expr
+  left: (field_expression
+    value: (_) @assignment.receiver
+    field: (field_identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // PHP queries - works with tree-sitter-php (php_only grammar)
@@ -457,6 +633,13 @@ export const PHP_QUERIES = `
     (variable_name
       (name) @name))) @definition.property
 
+; Constructor property promotion (PHP 8.0+: public Address $address in __construct)
+(method_declaration
+  parameters: (formal_parameters
+    (property_promotion_parameter
+      name: (variable_name
+        (name) @name)))) @definition.property
+
 ; ── Imports: use statements ──────────────────────────────────────────────────
 ; Simple: use App\\Models\\User;
 (namespace_use_declaration
@@ -501,6 +684,20 @@ export const PHP_QUERIES = `
   body: (declaration_list
     (use_declaration
       [(name) (qualified_name)] @heritage.trait))) @heritage
+
+; Write access: $obj->field = value
+(assignment_expression
+  left: (member_access_expression
+    object: (_) @assignment.receiver
+    name: (name) @assignment.property)
+  right: (_)) @assignment
+
+; Write access: ClassName::$field = value (static property)
+(assignment_expression
+  left: (scoped_property_access_expression
+    scope: (_) @assignment.receiver
+    name: (variable_name (name) @assignment.property))
+  right: (_)) @assignment
 `;
 
 // Ruby queries - works with tree-sitter-ruby
@@ -546,6 +743,20 @@ export const RUBY_QUERIES = `
   name: (constant) @heritage.class
   superclass: (superclass
     (constant) @heritage.extends)) @heritage
+
+; Write access: obj.field = value (Ruby setter — syntactically a method call to field=)
+(assignment
+  left: (call
+    receiver: (_) @assignment.receiver
+    method: (identifier) @assignment.property)
+  right: (_)) @assignment
+
+; Write access: obj.field += value (compound assignment — operator_assignment node, not assignment)
+(operator_assignment
+  left: (call
+    receiver: (_) @assignment.receiver
+    method: (identifier) @assignment.property)
+  right: (_)) @assignment
 `;
 
 // Kotlin queries - works with tree-sitter-kotlin (fwcd/tree-sitter-kotlin)
@@ -582,6 +793,12 @@ export const KOTLIN_QUERIES = `
   (variable_declaration
     (simple_identifier) @name)) @definition.property
 
+; Primary constructor val/var parameters (data class, value class, regular class)
+; binding_pattern_kind contains "val" or "var" — without it, the param is not a property
+(class_parameter
+  (binding_pattern_kind)
+  (simple_identifier) @name) @definition.property
+
 ; ── Enum entries ─────────────────────────────────────────────────────────
 (enum_entry
   (simple_identifier) @name) @definition.enum
@@ -626,6 +843,15 @@ export const KOTLIN_QUERIES = `
   (delegation_specifier
     (constructor_invocation
       (user_type (type_identifier) @heritage.extends)))) @heritage
+
+; Write access: obj.field = value
+(assignment
+  (directly_assignable_expression
+    (_) @assignment.receiver
+    (navigation_suffix
+      (simple_identifier) @assignment.property))
+  (_)) @assignment
+
 `;
 
 // Swift queries - works with tree-sitter-swift
@@ -684,6 +910,15 @@ export const SWIFT_QUERIES = `
 ; Extensions wrap the name in user_type unlike class/struct/enum declarations
 (class_declaration "extension" name: (user_type (type_identifier) @heritage.class)
   (inheritance_specifier inherits_from: (user_type (type_identifier) @heritage.extends))) @heritage
+
+; Write access: obj.field = value
+(assignment
+  (directly_assignable_expression
+    (_) @assignment.receiver
+    (navigation_suffix
+      (simple_identifier) @assignment.property))
+  (_)) @assignment
+
 `;
 
 export const LANGUAGE_QUERIES: Record<SupportedLanguages, string> = {
diff --git a/gitnexus/src/core/ingestion/type-env.ts b/gitnexus/src/core/ingestion/type-env.ts
index 10ccb849c..a1099fc46 100644
--- a/gitnexus/src/core/ingestion/type-env.ts
+++ b/gitnexus/src/core/ingestion/type-env.ts
@@ -1,9 +1,9 @@
 import type { SyntaxNode } from './utils.js';
-import { FUNCTION_NODE_TYPES, extractFunctionName, CLASS_CONTAINER_TYPES } from './utils.js';
+import { FUNCTION_NODE_TYPES, extractFunctionName, CLASS_CONTAINER_TYPES, CALL_EXPRESSION_TYPES, isBuiltInOrNoise } from './utils.js';
 import { SupportedLanguages } from '../../config/supported-languages.js';
 import { typeConfigs, TYPED_PARAMETER_TYPES } from './type-extractors/index.js';
-import type { ClassNameLookup } from './type-extractors/types.js';
-import { extractSimpleTypeName } from './type-extractors/shared.js';
+import type { ClassNameLookup, ReturnTypeLookup, ForLoopExtractorContext, PendingAssignment } from './type-extractors/types.js';
+import { extractSimpleTypeName, extractVarName, stripNullable, extractReturnTypeName } from './type-extractors/shared.js';
 import type { SymbolTable } from './symbol-table.js';
 
 /**
@@ -12,7 +12,9 @@ import type { SymbolTable } from './symbol-table.js';
  * file-level variables use the '' (empty string) scope.
  *
  * Design constraints:
- * - Explicit-only: only type annotations, never inferred types
+ * - Explicit-only: Tier 0 uses type annotations; Tier 1 infers from constructors
+ * - Tier 2: single-pass assignment chain propagation in source order — resolves
+ *   `const b = a` when `a` already has a type from Tier 0/1
  * - Scope-aware: function-local variables don't collide across functions
  * - Conservative: complex/generic types extract the base name only
  * - Per-file: built once, used for receiver resolution, then discarded
@@ -44,13 +46,68 @@ export interface TypeEnvironment {
   readonly constructorBindings: readonly ConstructorBinding[];
   /** Raw per-scope type bindings — for testing and debugging. */
   readonly env: TypeEnv;
+  /** Maps `scope\0varName` → constructor type for virtual dispatch override.
+   *  Populated when a variable has BOTH a declared base type AND a more specific
+   *  constructor type (e.g., `Animal a = new Dog()` → key maps to 'Dog'). */
+  readonly constructorTypeMap: ReadonlyMap<string, string>;
 }
 
+/**
+ * Position-indexed pattern binding: active only within a specific AST range.
+ * Used for smart-cast narrowing in mutually exclusive branches (e.g., Kotlin when arms).
+ */
+interface PatternOverride {
+  rangeStart: number;
+  rangeEnd: number;
+  typeName: string;
+}
+
+/** scope → varName → overrides (checked in order, first range match wins) */
+type PatternOverrides = Map<string, Map<string, PatternOverride[]>>;
+
+/** AST node types that represent mutually exclusive branch containers for pattern bindings.
+ *  Includes both multi-arm pattern-match branches AND if-statement bodies for null-check narrowing. */
+const NARROWING_BRANCH_TYPES = new Set([
+  'when_entry',          // Kotlin when
+  'switch_block_label',  // Java switch (enhanced)
+  'if_statement',        // TS/JS, Java, C/C++
+  'if_expression',       // Kotlin (if is an expression)
+  'statement_block',     // TS/JS: { ... } body of if
+  'control_structure_body', // Kotlin: body of if
+]);
+
+/** Walk up the AST from a pattern node to find the enclosing branch container. */
+const findNarrowingBranchScope = (node: SyntaxNode): SyntaxNode | undefined => {
+  let current = node.parent;
+  while (current) {
+    if (NARROWING_BRANCH_TYPES.has(current.type)) return current;
+    if (FUNCTION_NODE_TYPES.has(current.type)) return undefined;
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** Bare nullable keywords that fastStripNullable must reject. */
+const FAST_NULLABLE_KEYWORDS = new Set(['null', 'undefined', 'void', 'None', 'nil']);
+
+/**
+ * Fast-path nullable check: 90%+ of type names are simple identifiers (e.g. "User")
+ * that don't need the full stripNullable parse. Only call stripNullable when the
+ * string contains nullable markers ('|' for union types, '?' for nullable suffix).
+ */
+const fastStripNullable = (typeName: string): string | undefined => {
+  if (FAST_NULLABLE_KEYWORDS.has(typeName)) return undefined;
+  return (typeName.indexOf('|') === -1 && typeName.indexOf('?') === -1)
+    ? typeName
+    : stripNullable(typeName);
+};
+
 /** Implementation of the lookup logic — shared between TypeEnvironment and the legacy export. */
 const lookupInEnv = (
   env: TypeEnv,
   varName: string,
   callNode: SyntaxNode,
+  patternOverrides?: PatternOverrides,
 ): string | undefined => {
   // Self/this receiver: resolve to enclosing class name via AST walk
   if (varName === 'self' || varName === 'this' || varName === '$this') {
@@ -66,18 +123,33 @@ const lookupInEnv = (
   // Determine the enclosing function scope for the call
   const scopeKey = findEnclosingScopeKey(callNode);
 
+  // Check position-indexed pattern overrides first (e.g., Kotlin when/is smart casts).
+  // These take priority over flat scopeEnv because they represent per-branch narrowing.
+  if (scopeKey && patternOverrides) {
+    const varOverrides = patternOverrides.get(scopeKey)?.get(varName);
+    if (varOverrides) {
+      const pos = callNode.startIndex;
+      for (const override of varOverrides) {
+        if (pos >= override.rangeStart && pos <= override.rangeEnd) {
+          return fastStripNullable(override.typeName);
+        }
+      }
+    }
+  }
+
   // Try function-local scope first
   if (scopeKey) {
     const scopeEnv = env.get(scopeKey);
     if (scopeEnv) {
       const result = scopeEnv.get(varName);
-      if (result) return result;
+      if (result) return fastStripNullable(result);
     }
   }
 
   // Fall back to file-level scope
   const fileEnv = env.get(FILE_SCOPE);
-  return fileEnv?.get(varName);
+  const raw = fileEnv?.get(varName);
+  return raw ? fastStripNullable(raw) : undefined;
 };
 
 
@@ -98,6 +170,23 @@ const findEnclosingClassName = (node: SyntaxNode): string | undefined => {
   return undefined;
 };
 
+/** Keywords that refer to the current instance across languages. */
+const THIS_RECEIVERS = new Set(['this', 'self', '$this', 'Me']);
+
+/**
+ * If a pending assignment's receiver is this/self/$this/Me, substitute the
+ * enclosing class name. Returns the item unchanged for non-receiver kinds
+ * or when the receiver is not a this-keyword. Properties are readonly in the
+ * discriminated union, so a new object is returned when substitution occurs.
+ */
+const substituteThisReceiver = (item: PendingAssignment, node: SyntaxNode): PendingAssignment => {
+  if (item.kind !== 'fieldAccess' && item.kind !== 'methodCallResult') return item;
+  if (!THIS_RECEIVERS.has(item.receiver)) return item;
+  const className = findEnclosingClassName(node);
+  if (!className) return item;
+  return { ...item, receiver: className };
+};
+
 /**
  * Walk up the AST to find the enclosing class, then extract its parent class name
  * from the heritage/superclass AST node. Used to resolve `super`/`base`/`parent`.
@@ -262,7 +351,9 @@ const createClassNameLookup = (
       if (localNames.has(name)) return true;
       const cached = memo.get(name);
       if (cached !== undefined) return cached;
-      const result = symbolTable.lookupFuzzy(name).some(def => def.type === 'Class');
+      const result = symbolTable.lookupFuzzy(name).some(def =>
+        def.type === 'Class' || def.type === 'Enum' || def.type === 'Struct',
+      );
       memo.set(name, result);
       return result;
     },
@@ -278,32 +369,519 @@ const createClassNameLookup = (
  * the project are available for constructor inference in languages like Kotlin
  * where constructors are syntactically identical to function calls.
  */
+/**
+ * Node types whose subtrees can NEVER contain type-relevant descendants
+ * (declarations, parameters, for-loops, class definitions, pattern bindings).
+ * Conservative leaf-only set — verified safe across all 12 supported language grammars.
+ * IMPORTANT: Do NOT add expression containers (arguments, binary_expression, etc.) —
+ * they can contain arrow functions with typed parameters.
+ */
+const SKIP_SUBTREE_TYPES = new Set([
+  // Plain string literals (NOT template_string — it contains interpolated expressions
+  // that can hold arrow functions with typed parameters, e.g. `${(x: T) => x}`)
+  'string',              'string_literal',
+  'string_content',      'string_fragment',      'heredoc_body',
+  // Comments
+  'comment',             'line_comment',         'block_comment',
+  // Numeric/boolean/null literals
+  'number',              'integer_literal',      'float_literal',
+  'true',                'false',                'null',
+  // Regex
+  'regex',               'regex_pattern',
+]);
+
+const CLASS_LIKE_TYPES = new Set(['Class', 'Struct', 'Interface']);
+
+/** Memoize class definition lookups during fixpoint iteration.
+ *  SymbolTable is immutable during type resolution, so results never change.
+ *  Eliminates redundant array allocations + filter scans across iterations. */
+const createClassDefCache = (symbolTable?: SymbolTable) => {
+  const cache = new Map<string, Array<{ nodeId: string; type: string }>>();
+  return (typeName: string) => {
+    let result = cache.get(typeName);
+    if (result === undefined) {
+      result = symbolTable
+        ? symbolTable.lookupFuzzy(typeName).filter(d => CLASS_LIKE_TYPES.has(d.type))
+        : [];
+      cache.set(typeName, result);
+    }
+    return result;
+  };
+};
+
+/** AST node types representing constructor expressions across languages.
+ *  Note: C# also has `implicit_object_creation_expression` (`new()` with type
+ *  inference) which is NOT captured — the type is inferred, not explicit.
+ *  Kotlin constructors use `call_expression` (no `new` keyword) — not detected. */
+const CONSTRUCTOR_EXPR_TYPES = new Set([
+  'new_expression',               // TS/JS/C++: new Dog()
+  'object_creation_expression',   // Java/C#: new Dog()
+]);
+
+/** Extract the constructor class name from a declaration node's initializer.
+ *  Searches for new_expression / object_creation_expression in the node's subtree.
+ *  Returns the class name or undefined if no constructor is found.
+ *  Depth-limited to 5 to avoid expensive traversals. */
+const extractConstructorTypeName = (node: SyntaxNode, depth = 0): string | undefined => {
+  if (depth > 5) return undefined;
+  if (CONSTRUCTOR_EXPR_TYPES.has(node.type)) {
+    // Java/C#: object_creation_expression has 'type' field
+    const typeField = node.childForFieldName('type');
+    if (typeField) return extractSimpleTypeName(typeField);
+    // TS/JS: new_expression has 'constructor' field (but tree-sitter often just has identifier child)
+    const ctorField = node.childForFieldName('constructor');
+    if (ctorField) return extractSimpleTypeName(ctorField);
+    // Fallback: first named child is often the class identifier
+    if (node.firstNamedChild) return extractSimpleTypeName(node.firstNamedChild);
+  }
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (!child) continue;
+    // Don't descend into nested functions/classes or call expressions (prevents
+    // finding constructor args inside method calls, e.g. processAll(new Dog()))
+    if (FUNCTION_NODE_TYPES.has(child.type) || CLASS_CONTAINER_TYPES.has(child.type)
+      || CALL_EXPRESSION_TYPES.has(child.type)) continue;
+    const result = extractConstructorTypeName(child, depth + 1);
+    if (result) return result;
+  }
+  return undefined;
+};
+
+/** Max depth for MRO parent chain walking. Real-world inheritance rarely exceeds 3-4 levels. */
+const MAX_MRO_DEPTH = 5;
+
+/** Check if `child` is a subclass of `parent` using the parentMap.
+ *  BFS up from child, depth-limited (5), cycle-safe. */
+export const isSubclassOf = (
+  child: string, parent: string,
+  parentMap: ReadonlyMap<string, readonly string[]> | undefined,
+): boolean => {
+  if (!parentMap || child === parent) return false;
+  const visited = new Set<string>([child]);
+  let current = [child];
+  for (let depth = 0; depth < MAX_MRO_DEPTH && current.length > 0; depth++) {
+    const next: string[] = [];
+    for (const cls of current) {
+      const parents = parentMap.get(cls);
+      if (!parents) continue;
+      for (const p of parents) {
+        if (p === parent) return true;
+        if (!visited.has(p)) { visited.add(p); next.push(p); }
+      }
+    }
+    current = next;
+  }
+  return false;
+};
+
+/** Walk up the parent class chain to find a field or method on an ancestor.
+ *  BFS-like traversal with depth limit and cycle detection. First match wins.
+ *  Used by resolveFieldType and resolveMethodReturnType when direct lookup fails. */
+const walkParentChain = <T>(
+  typeName: string,
+  parentMap: ReadonlyMap<string, readonly string[]> | undefined,
+  getClassDefs: (name: string) => Array<{ nodeId: string; type: string }>,
+  lookupOnClass: (nodeId: string) => T | undefined,
+): T | undefined => {
+  if (!parentMap) return undefined;
+  const visited = new Set<string>([typeName]);
+  let current = [typeName];
+  for (let depth = 0; depth < MAX_MRO_DEPTH && current.length > 0; depth++) {
+    const next: string[] = [];
+    for (const cls of current) {
+      const parents = parentMap.get(cls);
+      if (!parents) continue;
+      for (const parent of parents) {
+        if (visited.has(parent)) continue;
+        visited.add(parent);
+        const parentDefs = getClassDefs(parent);
+        if (parentDefs.length === 1) {
+          const result = lookupOnClass(parentDefs[0].nodeId);
+          if (result !== undefined) return result;
+        }
+        next.push(parent);
+      }
+    }
+    current = next;
+  }
+  return undefined;
+};
+
+/** Resolve a field's declared type given a receiver variable and field name.
+ *  Uses SymbolTable to find the class nodeId for the receiver's type, then
+ *  looks up the field via the eagerly-populated fieldByOwner index.
+ *  Falls back to MRO parent chain walking if direct lookup fails (Phase 11A). */
+const resolveFieldType = (
+  receiver: string, field: string,
+  scopeEnv: ReadonlyMap<string, string>, symbolTable?: SymbolTable,
+  getClassDefs?: (typeName: string) => Array<{ nodeId: string; type: string }>,
+  parentMap?: ReadonlyMap<string, readonly string[]>,
+): string | undefined => {
+  if (!symbolTable) return undefined;
+  const receiverType = scopeEnv.get(receiver);
+  if (!receiverType) return undefined;
+  const lookup = getClassDefs
+    ?? ((name: string) => symbolTable.lookupFuzzy(name).filter(d => CLASS_LIKE_TYPES.has(d.type)));
+  const classDefs = lookup(receiverType);
+  if (classDefs.length !== 1) return undefined;
+  // Direct lookup first
+  const fieldDef = symbolTable.lookupFieldByOwner(classDefs[0].nodeId, field);
+  if (fieldDef?.declaredType) return extractReturnTypeName(fieldDef.declaredType);
+  // MRO parent chain walking on miss
+  const inherited = walkParentChain(receiverType, parentMap, lookup, (nodeId) => {
+    const f = symbolTable.lookupFieldByOwner(nodeId, field);
+    return f?.declaredType ? extractReturnTypeName(f.declaredType) : undefined;
+  });
+  return inherited;
+};
+
+/** Resolve a method's return type given a receiver variable and method name.
+ *  Uses SymbolTable to find class nodeIds for the receiver's type, then
+ *  looks up the method via lookupFuzzyCallable filtered by ownerId.
+ *  Falls back to MRO parent chain walking if direct lookup fails (Phase 11A). */
+const resolveMethodReturnType = (
+  receiver: string, method: string,
+  scopeEnv: ReadonlyMap<string, string>, symbolTable?: SymbolTable,
+  getClassDefs?: (typeName: string) => Array<{ nodeId: string; type: string }>,
+  parentMap?: ReadonlyMap<string, readonly string[]>,
+): string | undefined => {
+  if (!symbolTable) return undefined;
+  const receiverType = scopeEnv.get(receiver);
+  if (!receiverType) return undefined;
+  const lookup = getClassDefs
+    ?? ((name: string) => symbolTable.lookupFuzzy(name).filter(d => CLASS_LIKE_TYPES.has(d.type)));
+  const classDefs = lookup(receiverType);
+  if (classDefs.length === 0) return undefined;
+  // Direct lookup first
+  const classNodeIds = new Set(classDefs.map(d => d.nodeId));
+  const methods = symbolTable.lookupFuzzyCallable(method)
+    .filter(d => d.ownerId && classNodeIds.has(d.ownerId));
+  if (methods.length === 1 && methods[0].returnType) {
+    return extractReturnTypeName(methods[0].returnType);
+  }
+  // MRO parent chain walking on miss
+  if (methods.length === 0) {
+    const inherited = walkParentChain(receiverType, parentMap, lookup, (nodeId) => {
+      const parentMethods = symbolTable.lookupFuzzyCallable(method)
+        .filter(d => d.ownerId === nodeId);
+      if (parentMethods.length !== 1 || !parentMethods[0].returnType) return undefined;
+      return extractReturnTypeName(parentMethods[0].returnType);
+    });
+    return inherited;
+  }
+  return undefined;
+};
+
+/**
+ * Unified fixpoint propagation: iterate over ALL pending items (copy, callResult,
+ * fieldAccess, methodCallResult) until no new bindings are produced.
+ * Handles arbitrary-depth mixed chains:
+ *   const user = getUser();      // callResult → User
+ *   const addr = user.address;   // fieldAccess → Address (depends on user)
+ *   const city = addr.getCity(); // methodCallResult → City (depends on addr)
+ *   const alias = city;          // copy → City (depends on city)
+ * Data flow: SymbolTable (immutable) + scopeEnv → resolve → scopeEnv.
+ * Termination: finite entries, each bound at most once (first-writer-wins), max 10 iterations.
+ */
+const MAX_FIXPOINT_ITERATIONS = 10;
+
+const resolveFixpointBindings = (
+  pendingItems: Array<{ scope: string } & PendingAssignment>,
+  env: TypeEnv,
+  returnTypeLookup: ReturnTypeLookup,
+  symbolTable?: SymbolTable,
+  parentMap?: ReadonlyMap<string, readonly string[]>,
+): void => {
+  if (pendingItems.length === 0) return;
+  const getClassDefs = createClassDefCache(symbolTable);
+  const resolved = new Set<number>();
+  for (let iter = 0; iter < MAX_FIXPOINT_ITERATIONS; iter++) {
+    let changed = false;
+    for (let i = 0; i < pendingItems.length; i++) {
+      if (resolved.has(i)) continue;
+      const item = pendingItems[i];
+      const scopeEnv = env.get(item.scope);
+      if (!scopeEnv || scopeEnv.has(item.lhs)) { resolved.add(i); continue; }
+
+      let typeName: string | undefined;
+      switch (item.kind) {
+        case 'callResult':
+          typeName = returnTypeLookup.lookupReturnType(item.callee);
+          break;
+        case 'copy':
+          typeName = scopeEnv.get(item.rhs) ?? env.get(FILE_SCOPE)?.get(item.rhs);
+          break;
+        case 'fieldAccess':
+          typeName = resolveFieldType(item.receiver, item.field, scopeEnv, symbolTable, getClassDefs, parentMap);
+          break;
+        case 'methodCallResult':
+          typeName = resolveMethodReturnType(item.receiver, item.method, scopeEnv, symbolTable, getClassDefs, parentMap);
+          break;
+        default: {
+          // Exhaustive check: TypeScript will error here if a new PendingAssignment
+          // kind is added without handling it in the switch.
+          const _exhaustive: never = item;
+          break;
+        }
+      }
+      if (typeName) {
+        scopeEnv.set(item.lhs, typeName);
+        resolved.add(i);
+        changed = true;
+      }
+    }
+    if (!changed) break;
+    if (iter === MAX_FIXPOINT_ITERATIONS - 1 && process.env.GITNEXUS_DEBUG) {
+      const unresolved = pendingItems.length - resolved.size;
+      if (unresolved > 0) {
+        console.warn(`[type-env] fixpoint hit iteration cap (${MAX_FIXPOINT_ITERATIONS}), ${unresolved} items unresolved`);
+      }
+    }
+  }
+};
+
+/**
+ * Options for buildTypeEnv.
+ * Uses an options object to allow future extensions without positional parameter sprawl.
+ */
+export interface BuildTypeEnvOptions {
+  symbolTable?: SymbolTable;
+  parentMap?: ReadonlyMap<string, readonly string[]>;
+  /** Pre-resolved bindings from upstream files (Phase 14).
+   *  Seeded into FILE_SCOPE after walk() for names with no local binding.
+   *  Local declarations always take precedence (first-writer-wins). */
+  importedBindings?: ReadonlyMap<string, string>;
+  /** Cross-file return type fallback for imported callables (Phase 14 E3).
+   *  Consulted ONLY when SymbolTable has no unambiguous match.
+   *  Local definitions always take precedence (local-first principle). */
+  importedReturnTypes?: ReadonlyMap<string, string>;
+  /** Cross-file RAW return types for imported callables (Phase 14 E3).
+   *  Stores raw declared return type strings (e.g., 'User[]', 'List<User>').
+   *  Used by lookupRawReturnType for for-loop element extraction. */
+  importedRawReturnTypes?: ReadonlyMap<string, string>;
+}
+
+/** Seed cross-file type bindings into the file scope.
+ *  MUST be called AFTER walk() completes so that local declarations
+ *  (Tier 0/1) always take precedence over imported bindings (first-writer-wins). */
+function seedImportedBindings(
+  env: TypeEnv,
+  importedBindings: ReadonlyMap<string, string>,
+): void {
+  let fileEnv = env.get(FILE_SCOPE);
+  if (!fileEnv) { fileEnv = new Map(); env.set(FILE_SCOPE, fileEnv); }
+  for (const [name, type] of importedBindings) {
+    if (!fileEnv.has(name)) {
+      fileEnv.set(name, type);
+    }
+  }
+}
+
 export const buildTypeEnv = (
   tree: { rootNode: SyntaxNode },
   language: SupportedLanguages,
-  symbolTable?: SymbolTable,
+  options?: BuildTypeEnvOptions,
 ): TypeEnvironment => {
+  const symbolTable = options?.symbolTable;
+  const parentMap = options?.parentMap;
   const env: TypeEnv = new Map();
+  const patternOverrides: PatternOverrides = new Map();
+  // Phase P: maps `scope\0varName` → constructor type when a declaration has BOTH
+  // a base type annotation AND a more specific constructor initializer.
+  // e.g., `Animal a = new Dog()` → constructorTypeMap.set('func@42\0a', 'Dog')
+  const constructorTypeMap = new Map<string, string>();
   const localClassNames = new Set<string>();
   const classNames = createClassNameLookup(localClassNames, symbolTable);
   const config = typeConfigs[language];
   const bindings: ConstructorBinding[] = [];
 
+  // Build ReturnTypeLookup: SymbolTable is authoritative when it has an unambiguous match.
+  // Cross-file importedReturnTypes are consulted ONLY when SymbolTable has 0 matches.
+  // Ambiguous (2+) → undefined, no cross-file fallback (conservative, local-first principle).
+  const returnTypeLookup: ReturnTypeLookup = {
+    lookupReturnType(callee: string): string | undefined {
+      // SymbolTable is authoritative when it has an unambiguous match
+      if (symbolTable) {
+        if (isBuiltInOrNoise(callee)) return undefined;
+        const callables = symbolTable.lookupFuzzyCallable(callee);
+        if (callables.length === 1) {
+          const rawReturn = callables[0].returnType;
+          if (rawReturn) return extractReturnTypeName(rawReturn);
+        }
+        // Ambiguous (2+) → return undefined (conservative, no cross-file fallback)
+        if (callables.length > 1) return undefined;
+      }
+      // No match (0 results or no symbolTable) → fall back to cross-file
+      return options?.importedReturnTypes?.get(callee);
+    },
+    lookupRawReturnType(callee: string): string | undefined {
+      if (symbolTable) {
+        if (isBuiltInOrNoise(callee)) return undefined;
+        const callables = symbolTable.lookupFuzzyCallable(callee);
+        if (callables.length === 1) return callables[0].returnType;
+        // Ambiguous (2+) → return undefined (conservative, no cross-file fallback)
+        if (callables.length > 1) return undefined;
+      }
+      // Cross-file fallback uses importedRawReturnTypes (raw declared types, e.g., 'User[]')
+      // NOT importedReturnTypes (which contains processed/simple types via extractReturnTypeName)
+      return options?.importedRawReturnTypes?.get(callee);
+    }
+  };
+
+  // Pre-compute combined set of node types that need extractTypeBinding.
+  // Single Set.has() replaces 3 separate checks per node in walk().
+  const interestingNodeTypes = new Set<string>();
+  TYPED_PARAMETER_TYPES.forEach(t => interestingNodeTypes.add(t));
+  config.declarationNodeTypes.forEach(t => interestingNodeTypes.add(t));
+  config.forLoopNodeTypes?.forEach(t => interestingNodeTypes.add(t));
+  // Tier 2: unified fixpoint propagation — collects copy, callResult, fieldAccess, and
+  // methodCallResult items during walk(), then iterates until no new bindings are produced.
+  // Handles arbitrary-depth mixed chains: callResult → fieldAccess → methodCallResult → copy.
+  const pendingItems: Array<{ scope: string } & PendingAssignment> = [];
+  // For-loop nodes whose iterable was unresolved at walk-time. Replayed after the fixpoint
+  // resolves the iterable's type, bridging the walk-time/fixpoint gap (Phase 10 / ex-9B).
+  const pendingForLoops: Array<{ node: SyntaxNode; scope: string }> = [];
+  // Maps `scope\0varName` → the type annotation AST node from the original declaration.
+  // Allows pattern extractors to navigate back to the declaration's generic type arguments
+  // (e.g., to extract T from Result<T, E> for `if let Ok(x) = res`).
+  // NOTE: This is a SUPERSET of scopeEnv — entries exist even when extractSimpleTypeName
+  // returns undefined for container types (User[], []User, List[User]). This is intentional:
+  // for-loop Strategy 1 needs the raw AST type node for exactly those container types.
+  const declarationTypeNodes = new Map<string, SyntaxNode>();
+
   /**
    * Try to extract a (variableName → typeName) binding from a single AST node.
    *
    * Resolution tiers (first match wins):
-   * - Tier 0: explicit type annotations via extractDeclaration
+   * - Tier 0: explicit type annotations via extractDeclaration / extractForLoopBinding
    * - Tier 1: constructor-call inference via extractInitializer (fallback)
+   *
+   * Side effect: populates declarationTypeNodes for variables that have an explicit
+   * type annotation field on the declaration node. This allows pattern extractors to
+   * retrieve generic type arguments from the original declaration (e.g., extracting T
+   * from Result<T, E> for `if let Ok(x) = res`).
    */
-  const extractTypeBinding = (node: SyntaxNode, scopeEnv: Map<string, string>): void => {
+  const extractTypeBinding = (node: SyntaxNode, scopeEnv: Map<string, string>, scope: string): void => {
     // This guard eliminates 90%+ of calls before any language dispatch.
     if (TYPED_PARAMETER_TYPES.has(node.type)) {
+      // Capture the raw type annotation BEFORE extractParameter.
+      // Most languages use 'name' field; Rust uses 'pattern'; TS uses 'pattern' for some param types.
+      // Kotlin `parameter` nodes use positional children instead of named fields,
+      // so we fall back to scanning children by type when childForFieldName returns null.
+      let typeNode = node.childForFieldName('type');
+      if (typeNode) {
+        const nameNode = node.childForFieldName('name')
+          ?? node.childForFieldName('pattern')
+          // Python typed_parameter: name is a positional child (identifier), not a named field
+          ?? (node.firstNamedChild?.type === 'identifier' ? node.firstNamedChild : null);
+        if (nameNode) {
+          const varName = extractVarName(nameNode);
+          if (varName && !declarationTypeNodes.has(`${scope}\0${varName}`)) {
+            declarationTypeNodes.set(`${scope}\0${varName}`, typeNode);
+          }
+        }
+      } else {
+        // Fallback: positional children (Kotlin `parameter` → simple_identifier + user_type)
+        let fallbackName: SyntaxNode | null = null;
+        let fallbackType: SyntaxNode | null = null;
+        for (let i = 0; i < node.namedChildCount; i++) {
+          const child = node.namedChild(i);
+          if (!child) continue;
+          if (!fallbackName && (child.type === 'simple_identifier' || child.type === 'identifier')) {
+            fallbackName = child;
+          }
+          if (!fallbackType && (child.type === 'user_type' || child.type === 'type_identifier'
+            || child.type === 'generic_type' || child.type === 'parameterized_type'
+            || child.type === 'nullable_type')) {
+            fallbackType = child;
+          }
+        }
+        if (fallbackName && fallbackType) {
+          const varName = extractVarName(fallbackName);
+          if (varName && !declarationTypeNodes.has(`${scope}\0${varName}`)) {
+            declarationTypeNodes.set(`${scope}\0${varName}`, fallbackType);
+          }
+        }
+      }
       config.extractParameter(node, scopeEnv);
       return;
     }
+    // For-each loop variable bindings (Java/C#/Kotlin): explicit element types in the AST.
+    // Checked before declarationNodeTypes — loop variables are not declarations.
+    if (config.forLoopNodeTypes?.has(node.type)) {
+      if (config.extractForLoopBinding) {
+        const sizeBefore = scopeEnv.size;
+        const forLoopCtx: ForLoopExtractorContext = { scopeEnv, declarationTypeNodes, scope, returnTypeLookup };
+        config.extractForLoopBinding(node, forLoopCtx);
+        // If no new binding was produced, the iterable's type may not yet be resolved.
+        // Store for post-fixpoint replay (Phase 10 / ex-9B loop-fixpoint bridge).
+        if (scopeEnv.size === sizeBefore) {
+          pendingForLoops.push({ node, scope });
+        }
+      }
+      return;
+    }
     if (config.declarationNodeTypes.has(node.type)) {
+      // Capture the raw type annotation AST node BEFORE extractDeclaration.
+      // This decouples type node capture from scopeEnv success — container types
+      // (User[], []User, List[User]) that fail extractSimpleTypeName still get
+      // their AST type node recorded for Strategy 1 for-loop resolution.
+      // Try direct extraction first (works for Go var_spec, Python assignment, Rust let_declaration).
+      // Try direct type field first, then unwrap wrapper nodes (C# field_declaration,
+      // local_declaration_statement wrap their type inside a variable_declaration child).
+      let typeNode = node.childForFieldName('type');
+      if (!typeNode) {
+        // C# field_declaration / local_declaration_statement wrap type inside variable_declaration.
+        // Use manual loop instead of namedChildren.find() to avoid array allocation on hot path.
+        let wrapped = node.childForFieldName('declaration');
+        if (!wrapped) {
+          for (let i = 0; i < node.namedChildCount; i++) {
+            const c = node.namedChild(i);
+            if (c?.type === 'variable_declaration') { wrapped = c; break; }
+          }
+        }
+        if (wrapped) {
+          typeNode = wrapped.childForFieldName('type');
+          // Kotlin: variable_declaration stores the type as user_type / nullable_type
+          // child rather than a named 'type' field.
+          if (!typeNode) {
+            for (let i = 0; i < wrapped.namedChildCount; i++) {
+              const c = wrapped.namedChild(i);
+              if (c && (c.type === 'user_type' || c.type === 'nullable_type')) {
+                typeNode = c;
+                break;
+              }
+            }
+          }
+        }
+      }
+      if (typeNode) {
+        const nameNode = node.childForFieldName('name')
+          ?? node.childForFieldName('left')
+          ?? node.childForFieldName('pattern');
+        if (nameNode) {
+          const varName = extractVarName(nameNode);
+          if (varName && !declarationTypeNodes.has(`${scope}\0${varName}`)) {
+            declarationTypeNodes.set(`${scope}\0${varName}`, typeNode);
+          }
+        }
+      }
+      // Run the language-specific declaration extractor (may or may not add to scopeEnv).
+      const sizeBefore = typeNode ? scopeEnv.size : -1;
       config.extractDeclaration(node, scopeEnv);
+      // Fallback: for multi-declarator languages (TS, C#, Java) where the type field
+      // is on variable_declarator children, capture newly-added keys.
+      // Map preserves insertion order, so new keys are always at the end —
+      // skip the first sizeBefore entries to find only newly-added variables.
+      if (sizeBefore >= 0 && scopeEnv.size > sizeBefore) {
+        let skip = sizeBefore;
+        for (const varName of scopeEnv.keys()) {
+          if (skip > 0) { skip--; continue; }
+          if (!declarationTypeNodes.has(`${scope}\0${varName}`)) {
+            declarationTypeNodes.set(`${scope}\0${varName}`, typeNode);
+          }
+        }
+      }
       // Tier 1: constructor-call inference as fallback.
       // Always called when available — each language's extractInitializer
       // internally skips declarators that already have explicit annotations,
@@ -311,10 +889,38 @@ export const buildTypeEnv = (
       if (config.extractInitializer) {
         config.extractInitializer(node, scopeEnv, classNames);
       }
+
+      // Phase P: detect constructor-visible virtual dispatch.
+      // When a declaration has BOTH a type annotation AND a constructor initializer,
+      // record the constructor type for receiver override at call resolution time.
+      // e.g., `Animal a = new Dog()` → constructorTypeMap.set('scope\0a', 'Dog')
+      if (sizeBefore >= 0 && scopeEnv.size > sizeBefore) {
+        let ctorSkip = sizeBefore;
+        for (const varName of scopeEnv.keys()) {
+          if (ctorSkip > 0) { ctorSkip--; continue; }
+          const declaredType = scopeEnv.get(varName);
+          if (!declaredType) continue;
+          const ctorType = extractConstructorTypeName(node)
+            ?? config.detectConstructorType?.(node, classNames);
+          if (!ctorType || ctorType === declaredType) continue;
+          // Unwrap wrapper types (e.g., C++ shared_ptr<Animal> → Animal) for an
+          // accurate isSubclassOf comparison. Language-specific via config hook.
+          const declTypeNode = declarationTypeNodes.get(`${scope}\0${varName}`);
+          const effectiveDeclaredType = (declTypeNode && config.unwrapDeclaredType)
+            ? (config.unwrapDeclaredType(declaredType, declTypeNode) ?? declaredType)
+            : declaredType;
+          if (ctorType !== effectiveDeclaredType) {
+            constructorTypeMap.set(`${scope}\0${varName}`, ctorType);
+          }
+        }
+      }
     }
   };
 
   const walk = (node: SyntaxNode, currentScope: string): void => {
+    // Fast skip: subtrees that can never contain type-relevant nodes (leaf-like literals).
+    if (SKIP_SUBTREE_TYPES.has(node.type)) return;
+
     // Collect class/struct names as we encounter them (used by extractInitializer
     // to distinguish constructor calls from function calls, e.g. C++ `User()` vs `getUser()`)
     // Currently only C++ uses this locally; other languages rely on the SymbolTable path.
@@ -332,18 +938,92 @@ export const buildTypeEnv = (
       if (funcName) scope = `${funcName}@${node.startIndex}`;
     }
 
-    // Get or create the sub-map for this scope
-    if (!env.has(scope)) env.set(scope, new Map());
-    const scopeEnv = env.get(scope)!;
+    // Only create scope map and call extractTypeBinding for interesting node types.
+    // Single Set.has() replaces 3 separate checks inside extractTypeBinding.
+    if (interestingNodeTypes.has(node.type)) {
+      if (!env.has(scope)) env.set(scope, new Map());
+      const scopeEnv = env.get(scope)!;
+      extractTypeBinding(node, scopeEnv, scope);
+    }
 
-    extractTypeBinding(node, scopeEnv);
+    // Pattern binding extraction: handles constructs that introduce NEW typed variables
+    // via pattern matching (e.g. `if let Some(x) = opt`, `x instanceof T t`)
+    // or narrow existing variables within a branch (null-check narrowing).
+    // Runs after Tier 0/1 so scopeEnv already contains the source variable's type.
+    // Conservative: extractor returns undefined when source type is unknown.
+    if (config.extractPatternBinding && (!config.patternBindingNodeTypes || config.patternBindingNodeTypes.has(node.type))) {
+      // Ensure scopeEnv exists for pattern binding reads/writes
+      if (!env.has(scope)) env.set(scope, new Map());
+      const scopeEnv = env.get(scope)!;
+      const patternBinding = config.extractPatternBinding(node, scopeEnv, declarationTypeNodes, scope);
+      if (patternBinding) {
+        if (patternBinding.narrowingRange) {
+          // Explicit narrowing range (null-check narrowing): always store in patternOverrides
+          // using the extractor-provided range (typically the if-body block).
+          if (!patternOverrides.has(scope)) patternOverrides.set(scope, new Map());
+          const varMap = patternOverrides.get(scope)!;
+          if (!varMap.has(patternBinding.varName)) varMap.set(patternBinding.varName, []);
+          varMap.get(patternBinding.varName)!.push({
+            rangeStart: patternBinding.narrowingRange.startIndex,
+            rangeEnd: patternBinding.narrowingRange.endIndex,
+            typeName: patternBinding.typeName,
+          });
+        } else if (config.allowPatternBindingOverwrite) {
+          // Position-indexed: store per-branch binding for smart-cast narrowing.
+          // Each when arm / switch case gets its own type for the variable,
+          // preventing cross-arm contamination (e.g., Kotlin when/is).
+          const branchNode = findNarrowingBranchScope(node);
+          if (branchNode) {
+            if (!patternOverrides.has(scope)) patternOverrides.set(scope, new Map());
+            const varMap = patternOverrides.get(scope)!;
+            if (!varMap.has(patternBinding.varName)) varMap.set(patternBinding.varName, []);
+            varMap.get(patternBinding.varName)!.push({
+              rangeStart: branchNode.startIndex,
+              rangeEnd: branchNode.endIndex,
+              typeName: patternBinding.typeName,
+            });
+          }
+          // Also store in flat scopeEnv as fallback (last arm wins — same as before
+          // for code that doesn't use position-indexed lookup).
+          scopeEnv.set(patternBinding.varName, patternBinding.typeName);
+        } else if (!scopeEnv.has(patternBinding.varName)) {
+          // First-writer-wins for languages without smart-cast overwrite (Java instanceof, etc.)
+          scopeEnv.set(patternBinding.varName, patternBinding.typeName);
+        }
+      }
+    }
+
+    // Tier 2: collect plain-identifier RHS assignments for post-walk propagation.
+    // Delegates to per-language extractPendingAssignment — AST shapes differ widely
+    // (JS uses variable_declarator/name/value, Rust uses let_declaration/pattern/value,
+    // Python uses assignment/left/right, Go uses short_var_declaration/expression_list).
+    // May return a single item or an array (for destructuring: N fieldAccess items).
+    if (config.extractPendingAssignment && config.declarationNodeTypes.has(node.type)) {
+      // scopeEnv is guaranteed to exist here because declarationNodeTypes is a subset
+      // of interestingNodeTypes, so extractTypeBinding already created the scope map above.
+      const scopeEnv = env.get(scope);
+      if (scopeEnv) {
+        const pending = config.extractPendingAssignment(node, scopeEnv);
+        if (pending) {
+          const items = Array.isArray(pending) ? pending : [pending];
+          for (const item of items) {
+            // Substitute this/self/$this/Me receivers with enclosing class name
+            const resolved = substituteThisReceiver(item, node);
+            pendingItems.push({ scope, ...resolved });
+          }
+        }
+      }
+    }
 
     // Scan for constructor bindings that couldn't be resolved locally.
     // Only collect if TypeEnv didn't already resolve this binding.
     if (config.scanConstructorBinding) {
       const result = config.scanConstructorBinding(node);
-      if (result && !scopeEnv.has(result.varName)) {
-        bindings.push({ scope, ...result });
+      if (result) {
+        const scopeEnv = env.get(scope);
+        if (!scopeEnv?.has(result.varName)) {
+          bindings.push({ scope, ...result });
+        }
       }
     }
 
@@ -355,10 +1035,44 @@ export const buildTypeEnv = (
   };
 
   walk(tree.rootNode, FILE_SCOPE);
+
+  // Phase 14: Seed cross-file bindings from upstream files AFTER walk
+  // (local declarations from walk() take precedence — first-writer-wins)
+  if (options?.importedBindings && options.importedBindings.size > 0) {
+    seedImportedBindings(env, options.importedBindings);
+  }
+
+  resolveFixpointBindings(pendingItems, env, returnTypeLookup, symbolTable, parentMap);
+
+  // Post-fixpoint for-loop replay (Phase 10 / ex-9B loop-fixpoint bridge):
+  // For-loop nodes whose iterables were unresolved at walk-time may now be
+  // resolvable because the fixpoint bound the iterable's type.
+  // Example: `const users = getUsers(); for (const u of users) { u.save(); }`
+  //   - walk-time: users untyped → u unresolved
+  //   - fixpoint: users → User[]
+  //   - replay: users now typed → u → User
+  if (pendingForLoops.length > 0 && config.extractForLoopBinding) {
+    for (const { node, scope } of pendingForLoops) {
+      if (!env.has(scope)) env.set(scope, new Map());
+      const scopeEnv = env.get(scope)!;
+      config.extractForLoopBinding(node, { scopeEnv, declarationTypeNodes, scope, returnTypeLookup });
+    }
+    // Re-run the main fixpoint to resolve items that depended on loop variables.
+    // Only needed if replay actually produced new bindings.
+    const unresolvedBefore = pendingItems.filter((item) => {
+      const scopeEnv = env.get(item.scope);
+      return scopeEnv && !scopeEnv.has(item.lhs);
+    });
+    if (unresolvedBefore.length > 0) {
+      resolveFixpointBindings(unresolvedBefore, env, returnTypeLookup, symbolTable);
+    }
+  }
+
   return {
-    lookup: (varName, callNode) => lookupInEnv(env, varName, callNode),
+    lookup: (varName, callNode) => lookupInEnv(env, varName, callNode, patternOverrides),
     constructorBindings: bindings,
     env,
+    constructorTypeMap,
   };
 };
 
diff --git a/gitnexus/src/core/ingestion/type-extractors/c-cpp.ts b/gitnexus/src/core/ingestion/type-extractors/c-cpp.ts
index 4113b0eac..8b4da3731 100644
--- a/gitnexus/src/core/ingestion/type-extractors/c-cpp.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/c-cpp.ts
@@ -1,12 +1,34 @@
 import type { SyntaxNode } from '../utils.js';
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner } from './types.js';
-import { extractSimpleTypeName, extractVarName } from './shared.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, PendingAssignmentExtractor, ForLoopExtractor, LiteralTypeInferrer, ConstructorTypeDetector, DeclaredTypeUnwrapper } from './types.js';
+import { extractSimpleTypeName, extractVarName, resolveIterableElementType, methodToTypeArgPosition, type TypeArgPosition } from './shared.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'declaration',
-  'for_range_loop',
 ]);
 
+/** Smart pointer factory function names that create a typed object. */
+const SMART_PTR_FACTORIES = new Set([
+  'make_shared', 'make_unique', 'make_shared_for_overwrite',
+]);
+
+/** Smart pointer wrapper type names. When the declared type is a smart pointer,
+ *  the inner template type is extracted for virtual dispatch comparison. */
+const SMART_PTR_WRAPPERS = new Set(['shared_ptr', 'unique_ptr', 'weak_ptr']);
+
+/** Extract the first type name from a template_argument_list child.
+ *  Unwraps type_descriptor wrappers common in tree-sitter-cpp ASTs.
+ *  Returns undefined if no template arguments or no type found. */
+export const extractFirstTemplateTypeArg = (parentNode: SyntaxNode): string | undefined => {
+  const templateArgs = parentNode.children.find((c: any) => c.type === 'template_argument_list');
+  if (!templateArgs?.firstNamedChild) return undefined;
+  let argNode: any = templateArgs.firstNamedChild;
+  if (argNode.type === 'type_descriptor') {
+    const inner = argNode.childForFieldName('type');
+    if (inner) argNode = inner;
+  }
+  return extractSimpleTypeName(argNode) ?? undefined;
+};
+
 /** C++: Type x = ...; Type* x; Type& x; */
 const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<string, string>): void => {
   const typeNode = node.childForFieldName('type');
@@ -89,6 +111,27 @@ const extractInitializer: InitializerExtractor = (node: SyntaxNode, env: Map<str
     } else if (func.type === 'identifier') {
       const text = func.text;
       if (text && classNames.has(text)) env.set(varName, text);
+    } else {
+      // auto x = std::make_shared<Dog>() — smart pointer factory via template_function.
+      // AST: call_expression > function: qualified_identifier > template_function
+      //   or: call_expression > function: template_function (unqualified)
+      const templateFunc = func.type === 'template_function'
+        ? func
+        : (func.type === 'qualified_identifier' || func.type === 'scoped_identifier')
+          ? func.namedChildren.find((c: any) => c.type === 'template_function') ?? null
+          : null;
+      if (templateFunc) {
+        const nameNode = templateFunc.firstNamedChild;
+        if (nameNode) {
+          const funcName = (nameNode.type === 'qualified_identifier' || nameNode.type === 'scoped_identifier')
+            ? nameNode.lastNamedChild?.text ?? ''
+            : nameNode.text;
+          if (SMART_PTR_FACTORIES.has(funcName)) {
+            const typeName = extractFirstTemplateTypeArg(templateFunc);
+            if (typeName) env.set(varName, typeName);
+          }
+        }
+      }
     }
     return;
   }
@@ -160,10 +203,294 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName, calleeName: func.text };
 };
 
+/** C++: auto alias = user → declaration with auto type + init_declarator where value is identifier */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type !== 'declaration') return undefined;
+  const typeNode = node.childForFieldName('type');
+  if (!typeNode) return undefined;
+  // Only handle auto — typed declarations already resolved by extractDeclaration
+  const typeText = typeNode.text;
+  if (typeText !== 'auto' && typeText !== 'decltype(auto)'
+    && typeNode.type !== 'placeholder_type_specifier') return undefined;
+  const declarator = node.childForFieldName('declarator');
+  if (!declarator || declarator.type !== 'init_declarator') return undefined;
+  const value = declarator.childForFieldName('value');
+  if (!value) return undefined;
+  const nameNode = declarator.childForFieldName('declarator');
+  if (!nameNode) return undefined;
+  const finalName = nameNode.type === 'pointer_declarator' || nameNode.type === 'reference_declarator'
+    ? nameNode.firstNamedChild : nameNode;
+  if (!finalName) return undefined;
+  const lhs = extractVarName(finalName);
+  if (!lhs || scopeEnv.has(lhs)) return undefined;
+  if (value.type === 'identifier') return { kind: 'copy', lhs, rhs: value.text };
+  // field_expression RHS → fieldAccess (a.field)
+  if (value.type === 'field_expression') {
+    const obj = value.firstNamedChild;
+    const field = value.lastNamedChild;
+    if (obj?.type === 'identifier' && field?.type === 'field_identifier') {
+      return { kind: 'fieldAccess', lhs, receiver: obj.text, field: field.text };
+    }
+  }
+  // call_expression RHS
+  if (value.type === 'call_expression') {
+    const funcNode = value.childForFieldName('function');
+    if (funcNode?.type === 'identifier') {
+      return { kind: 'callResult', lhs, callee: funcNode.text };
+    }
+    // method call with receiver: call_expression → function: field_expression
+    if (funcNode?.type === 'field_expression') {
+      const obj = funcNode.firstNamedChild;
+      const field = funcNode.lastNamedChild;
+      if (obj?.type === 'identifier' && field?.type === 'field_identifier') {
+        return { kind: 'methodCallResult', lhs, receiver: obj.text, method: field.text };
+      }
+    }
+  }
+  return undefined;
+};
+
+// --- For-loop Tier 1c ---
+
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set(['for_range_loop']);
+
+/** Extract template type arguments from a C++ template_type node.
+ *  C++ template_type uses template_argument_list (not type_arguments), and each
+ *  argument is a type_descriptor with a 'type' field containing the type_specifier. */
+const extractCppTemplateTypeArgs = (templateTypeNode: SyntaxNode): string[] => {
+  const argsNode = templateTypeNode.childForFieldName('arguments');
+  if (!argsNode || argsNode.type !== 'template_argument_list') return [];
+  const result: string[] = [];
+  for (let i = 0; i < argsNode.namedChildCount; i++) {
+    let argNode = argsNode.namedChild(i);
+    if (!argNode) continue;
+    // type_descriptor wraps the actual type specifier in a 'type' field
+    if (argNode.type === 'type_descriptor') {
+      const inner = argNode.childForFieldName('type');
+      if (inner) argNode = inner;
+    }
+    const name = extractSimpleTypeName(argNode);
+    if (name) result.push(name);
+  }
+  return result;
+};
+
+/** Extract element type from a C++ type annotation AST node.
+ *  Handles: template_type (vector<User>, map<string, User>),
+ *  pointer/reference types (User*, User&). */
+const extractCppElementTypeFromTypeNode = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last', depth = 0): string | undefined => {
+  if (depth > 50) return undefined;
+  // template_type: vector<User>, map<string, User> — extract type arg based on position
+  if (typeNode.type === 'template_type') {
+    const args = extractCppTemplateTypeArgs(typeNode);
+    if (args.length >= 1) return pos === 'first' ? args[0] : args[args.length - 1];
+  }
+  // reference/pointer types: unwrap and recurse (vector<User>& → vector<User>)
+  if (typeNode.type === 'reference_type' || typeNode.type === 'pointer_type'
+    || typeNode.type === 'type_descriptor') {
+    const inner = typeNode.lastNamedChild;
+    if (inner) return extractCppElementTypeFromTypeNode(inner, pos, depth + 1);
+  }
+  // qualified/scoped types: std::vector<User> → unwrap to template_type child
+  if (typeNode.type === 'qualified_identifier' || typeNode.type === 'scoped_type_identifier') {
+    const inner = typeNode.lastNamedChild;
+    if (inner) return extractCppElementTypeFromTypeNode(inner, pos, depth + 1);
+  }
+  return undefined;
+};
+
+/** Walk up from a for-range-loop to the enclosing function_definition and search parameters
+ *  for one named `iterableName`. Returns the element type from its annotation. */
+const findCppParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'function_definition') {
+      const declarator = current.childForFieldName('declarator');
+      // function_definition > declarator (function_declarator) > parameters (parameter_list)
+      const paramsNode = declarator?.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param || param.type !== 'parameter_declaration') continue;
+          const paramDeclarator = param.childForFieldName('declarator');
+          if (!paramDeclarator) continue;
+          // Unwrap reference/pointer declarators: vector<User>& users → &users
+          let identNode = paramDeclarator;
+          if (identNode.type === 'reference_declarator' || identNode.type === 'pointer_declarator') {
+            identNode = identNode.firstNamedChild ?? identNode;
+          }
+          if (identNode.text !== iterableName) continue;
+          const typeNode = param.childForFieldName('type');
+          if (typeNode) return extractCppElementTypeFromTypeNode(typeNode, pos);
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** C++: for (auto& user : users) — extract loop variable binding.
+ *  Handles explicit types (for (User& user : users)) and auto (for (auto& user : users)).
+ *  For auto, resolves element type from the iterable's container type. */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope } ): void => {
+  if (node.type !== 'for_range_loop') return;
+
+  const typeNode = node.childForFieldName('type');
+  const declaratorNode = node.childForFieldName('declarator');
+  const rightNode = node.childForFieldName('right');
+  if (!typeNode || !declaratorNode || !rightNode) return;
+
+  // Unwrap reference/pointer declarator to get the loop variable name
+  let nameNode = declaratorNode;
+  if (nameNode.type === 'reference_declarator' || nameNode.type === 'pointer_declarator') {
+    nameNode = nameNode.firstNamedChild ?? nameNode;
+  }
+
+  // Handle structured bindings: auto& [key, value] or auto [key, value]
+  // Bind the last identifier (value heuristic for [key, value] patterns)
+  let loopVarName: string | undefined;
+  if (nameNode.type === 'structured_binding_declarator') {
+    const lastChild = nameNode.lastNamedChild;
+    if (lastChild?.type === 'identifier') {
+      loopVarName = lastChild.text;
+    }
+  } else if (declaratorNode.type === 'structured_binding_declarator') {
+    const lastChild = declaratorNode.lastNamedChild;
+    if (lastChild?.type === 'identifier') {
+      loopVarName = lastChild.text;
+    }
+  }
+
+  const varName = loopVarName ?? extractVarName(nameNode);
+  if (!varName) return;
+
+  // Check if the type is auto/placeholder — if not, use the explicit type directly
+  const isAuto = typeNode.type === 'placeholder_type_specifier'
+    || typeNode.text === 'auto'
+    || typeNode.text === 'const auto'
+    || typeNode.text === 'decltype(auto)';
+
+  if (!isAuto) {
+    // Explicit type: for (User& user : users) — extract directly
+    const typeName = extractSimpleTypeName(typeNode);
+    if (typeName) scopeEnv.set(varName, typeName);
+    return;
+  }
+
+  // auto/const auto/auto& — resolve from the iterable's container type
+  // Extract iterable name + optional method
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  if (rightNode.type === 'identifier') {
+    iterableName = rightNode.text;
+  } else if (rightNode.type === 'field_expression') {
+    const prop = rightNode.lastNamedChild;
+    if (prop) iterableName = prop.text;
+  } else if (rightNode.type === 'call_expression') {
+    // users.begin() is NOT used in range-for, but container.items() etc. might be
+    const fieldExpr = rightNode.childForFieldName('function');
+    if (fieldExpr?.type === 'field_expression') {
+      const obj = fieldExpr.firstNamedChild;
+      if (obj?.type === 'identifier') iterableName = obj.text;
+      const field = fieldExpr.lastNamedChild;
+      if (field?.type === 'field_identifier') methodName = field.text;
+    }
+  } else if (rightNode.type === 'pointer_expression') {
+    // Dereference: for (auto& user : *ptr) → pointer_expression > identifier
+    // Only handles simple *identifier; *this->field and **ptr are not resolved.
+    const operand = rightNode.lastNamedChild;
+    if (operand?.type === 'identifier') iterableName = operand.text;
+  }
+  if (!iterableName) return;
+
+  const containerTypeName = scopeEnv.get(iterableName);
+  const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+  const elementType = resolveIterableElementType(
+    iterableName, node, scopeEnv, declarationTypeNodes, scope,
+    extractCppElementTypeFromTypeNode, findCppParamElementType,
+    typeArgPos,
+  );
+  if (elementType) scopeEnv.set(varName, elementType);
+};
+
+/** Infer the type of a literal AST node for C++ overload disambiguation. */
+const inferLiteralType: LiteralTypeInferrer = (node) => {
+  switch (node.type) {
+    case 'number_literal': {
+      const t = node.text;
+      // Float suffixes
+      if (t.endsWith('f') || t.endsWith('F')) return 'float';
+      if (t.includes('.') || t.includes('e') || t.includes('E')) return 'double';
+      // Long suffix
+      if (t.endsWith('L') || t.endsWith('l') || t.endsWith('LL') || t.endsWith('ll')) return 'long';
+      return 'int';
+    }
+    case 'string_literal':
+    case 'raw_string_literal':
+    case 'concatenated_string':
+      return 'string';
+    case 'char_literal':
+      return 'char';
+    case 'true':
+    case 'false':
+      return 'bool';
+    case 'null':
+    case 'nullptr':
+      return 'null';
+    default:
+      return undefined;
+  }
+};
+
+/** C++: detect constructor type from smart pointer factory calls (make_shared<Dog>()).
+ *  Extracts the template type argument as the constructor type for virtual dispatch. */
+const detectCppConstructorType: ConstructorTypeDetector = (node, classNames) => {
+  // Navigate to the initializer value in the declaration
+  const declarator = node.childForFieldName('declarator');
+  const initDecl = declarator?.type === 'init_declarator' ? declarator : undefined;
+  if (!initDecl) return undefined;
+  const value = initDecl.childForFieldName('value');
+  if (!value || value.type !== 'call_expression') return undefined;
+
+  // Check for template_function pattern: make_shared<Dog>()
+  const func = value.childForFieldName('function');
+  if (!func || func.type !== 'template_function') return undefined;
+
+  // Extract function name (possibly qualified: std::make_shared)
+  const nameNode = func.firstNamedChild;
+  if (!nameNode) return undefined;
+  let funcName: string;
+  if (nameNode.type === 'qualified_identifier' || nameNode.type === 'scoped_identifier') {
+    funcName = nameNode.lastNamedChild?.text ?? '';
+  } else {
+    funcName = nameNode.text;
+  }
+  if (!SMART_PTR_FACTORIES.has(funcName)) return undefined;
+
+  // Extract template type argument
+  return extractFirstTemplateTypeArg(func);
+};
+
+/** Unwrap a C++ smart pointer declared type to its inner template type.
+ *  E.g., shared_ptr<Animal> → Animal. Returns the original name if not a smart pointer. */
+const unwrapCppDeclaredType: DeclaredTypeUnwrapper = (declaredType, typeNode) => {
+  if (!SMART_PTR_WRAPPERS.has(declaredType)) return declaredType;
+  if (typeNode.type !== 'template_type') return declaredType;
+  return extractFirstTemplateTypeArg(typeNode) ?? declaredType;
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
   extractDeclaration,
   extractParameter,
   extractInitializer,
   scanConstructorBinding,
+  extractForLoopBinding,
+  extractPendingAssignment,
+  inferLiteralType,
+  detectConstructorType: detectCppConstructorType,
+  unwrapDeclaredType: unwrapCppDeclaredType,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/csharp.ts b/gitnexus/src/core/ingestion/type-extractors/csharp.ts
index 9a2f3e839..84978638a 100644
--- a/gitnexus/src/core/ingestion/type-extractors/csharp.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/csharp.ts
@@ -1,31 +1,19 @@
 import type { SyntaxNode } from '../utils.js';
-import type { ConstructorBindingScanner, LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor } from './types.js';
-import { extractSimpleTypeName, extractVarName, findChildByType, unwrapAwait } from './shared.js';
+import type { ConstructorBindingScanner, ForLoopExtractor, LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, PendingAssignmentExtractor, PatternBindingExtractor, LiteralTypeInferrer } from './types.js';
+import { extractSimpleTypeName, extractVarName, unwrapAwait, resolveIterableElementType, methodToTypeArgPosition, extractElementTypeFromString, type TypeArgPosition } from './shared.js';
+import { findChild } from '../resolvers/utils.js';
+
+/** Known container property accessors that operate on the container itself (e.g., dict.Keys, dict.Values) */
+const KNOWN_CONTAINER_PROPS: ReadonlySet<string> = new Set(['Keys', 'Values']);
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'local_declaration_statement',
   'variable_declaration',
   'field_declaration',
-  'is_pattern_expression',
 ]);
 
-/** C#: Type x = ...; var x = new Type(); obj is Type x */
+/** C#: Type x = ...; var x = new Type(); */
 const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<string, string>): void => {
-  // C# pattern matching: `obj is User user` → is_pattern_expression > declaration_pattern
-  if (node.type === 'is_pattern_expression') {
-    const pattern = node.childForFieldName('pattern');
-    if (pattern?.type === 'declaration_pattern') {
-      const typeNode = pattern.childForFieldName('type');
-      const nameNode = pattern.childForFieldName('name');
-      if (typeNode && nameNode) {
-        const typeName = extractSimpleTypeName(typeNode);
-        const varName = extractVarName(nameNode);
-        if (typeName && varName) env.set(varName, typeName);
-      }
-    }
-    return;
-  }
-
   // C# tree-sitter: local_declaration_statement > variable_declaration > ...
   // Recursively descend through wrapper nodes
   for (let i = 0; i < node.namedChildCount; i++) {
@@ -63,8 +51,8 @@ const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<str
     // tree-sitter-c-sharp may put object_creation_expression as direct child
     // or inside equals_value_clause depending on grammar version
     if (declarators.length === 1) {
-      const initializer = findChildByType(declarators[0], 'object_creation_expression')
-        ?? findChildByType(declarators[0], 'equals_value_clause')?.firstNamedChild;
+      const initializer = findChild(declarators[0], 'object_creation_expression')
+        ?? findChild(declarators[0], 'equals_value_clause')?.firstNamedChild;
       if (initializer?.type === 'object_creation_expression') {
         const ctorType = initializer.childForFieldName('type');
         if (ctorType) typeName = extractSimpleTypeName(ctorType);
@@ -143,9 +131,374 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName: nameNode.text, calleeName };
 };
 
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'foreach_statement',
+]);
+
+/** Extract element type from a C# type annotation AST node.
+ *  Handles generic_name (List<User>), array_type (User[]), nullable_type (?).
+ *  `pos` selects which type arg: 'first' for keys, 'last' for values (default). */
+const extractCSharpElementTypeFromTypeNode = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last', depth = 0): string | undefined => {
+  if (depth > 50) return undefined;
+  // generic_name: List<User>, IEnumerable<User>, Dictionary<string, User>
+  // C# uses generic_name (not generic_type)
+  if (typeNode.type === 'generic_name') {
+    const argList = findChild(typeNode, 'type_argument_list');
+    if (argList && argList.namedChildCount >= 1) {
+      if (pos === 'first') {
+        const firstArg = argList.namedChild(0);
+        if (firstArg) return extractSimpleTypeName(firstArg);
+      } else {
+        const lastArg = argList.namedChild(argList.namedChildCount - 1);
+        if (lastArg) return extractSimpleTypeName(lastArg);
+      }
+    }
+  }
+  // array_type: User[]
+  if (typeNode.type === 'array_type') {
+    const elemNode = typeNode.firstNamedChild;
+    if (elemNode) return extractSimpleTypeName(elemNode);
+  }
+  // nullable_type: unwrap and recurse (List<User>? → List<User> → User)
+  if (typeNode.type === 'nullable_type') {
+    const inner = typeNode.firstNamedChild;
+    if (inner) return extractCSharpElementTypeFromTypeNode(inner, pos, depth + 1);
+  }
+  return undefined;
+};
+
+/** Walk up from a foreach to the enclosing method and search parameters. */
+const findCSharpParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'method_declaration' || current.type === 'local_function_statement') {
+      const paramsNode = current.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param || param.type !== 'parameter') continue;
+          const nameNode = param.childForFieldName('name');
+          if (nameNode?.text !== iterableName) continue;
+          const typeNode = param.childForFieldName('type');
+          if (typeNode) return extractCSharpElementTypeFromTypeNode(typeNode, pos);
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** C#: foreach (User user in users) — extract loop variable binding.
+ *  Tier 1c: for `foreach (var user in users)`, resolves element type from iterable. */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  const typeNode = node.childForFieldName('type');
+  const nameNode = node.childForFieldName('left');
+  if (!typeNode || !nameNode) return;
+  const varName = extractVarName(nameNode);
+  if (!varName) return;
+
+  // Explicit type (existing behavior): foreach (User user in users)
+  if (!(typeNode.type === 'implicit_type' && typeNode.text === 'var')) {
+    const typeName = extractSimpleTypeName(typeNode);
+    if (typeName) scopeEnv.set(varName, typeName);
+    return;
+  }
+
+  // Tier 1c: implicit type (var) — resolve from iterable's container type
+  const rightNode = node.childForFieldName('right');
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  let callExprElementType: string | undefined;
+
+  if (rightNode?.type === 'identifier') {
+    iterableName = rightNode.text;
+  } else if (rightNode?.type === 'member_access_expression') {
+    // C# property access: data.Keys, data.Values → member_access_expression
+    // Also handles bare member access: this.users, repo.users → use property as iterableName
+    const obj = rightNode.childForFieldName('expression');
+    const prop = rightNode.childForFieldName('name');
+    const propText = prop?.type === 'identifier' ? prop.text : undefined;
+    if (propText && KNOWN_CONTAINER_PROPS.has(propText)) {
+      if (obj?.type === 'identifier') {
+        iterableName = obj.text;
+      } else if (obj?.type === 'member_access_expression') {
+        // Nested member access: this.data.Values → obj is "this.data", extract "data"
+        const innerProp = obj.childForFieldName('name');
+        if (innerProp) iterableName = innerProp.text;
+      }
+      methodName = propText;
+    } else if (propText) {
+      // Bare member access: this.users → use property name for scopeEnv lookup
+      iterableName = propText;
+    }
+  } else if (rightNode?.type === 'invocation_expression') {
+    // C# method call: data.Select(...) → invocation_expression > member_access_expression
+    // Direct function call: GetUsers() → invocation_expression > identifier
+    const fn = rightNode.firstNamedChild;
+    if (fn?.type === 'member_access_expression') {
+      const obj = fn.childForFieldName('expression');
+      const prop = fn.childForFieldName('name');
+      if (obj?.type === 'identifier') iterableName = obj.text;
+      if (prop?.type === 'identifier') methodName = prop.text;
+    } else if (fn?.type === 'identifier') {
+      // Direct function call: foreach (var u in GetUsers())
+      const rawReturn = returnTypeLookup.lookupRawReturnType(fn.text);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    const containerTypeName = scopeEnv.get(iterableName!);
+    const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractCSharpElementTypeFromTypeNode, findCSharpParamElementType,
+      typeArgPos,
+    );
+  }
+  if (elementType) scopeEnv.set(varName, elementType);
+};
+
+/**
+ * C# pattern binding extractor for `obj is Type variable` (type pattern).
+ *
+ * AST structure:
+ *   is_pattern_expression
+ *     expression: (the variable being tested)
+ *     pattern: declaration_pattern
+ *       type: (the declared type)
+ *       name: single_variable_designation > identifier (the new variable name)
+ *
+ * Conservative: returns undefined when the pattern field is absent, is not a
+ * declaration_pattern, or when the type/name cannot be extracted.
+ * No scopeEnv lookup is needed — the pattern explicitly declares the new variable's type.
+ */
+/**
+ * Find the if-body (consequence) block for a C# null-check.
+ * Walks up from the expression to find the enclosing if_statement,
+ * then returns its first block child (the truthy branch body).
+ */
+const findCSharpIfConsequenceBlock = (expr: SyntaxNode): SyntaxNode | undefined => {
+  let current = expr.parent;
+  while (current) {
+    if (current.type === 'if_statement') {
+      // C# if_statement consequence is the 'consequence' field or first block child
+      const consequence = current.childForFieldName('consequence');
+      if (consequence) return consequence;
+      for (let i = 0; i < current.childCount; i++) {
+        const child = current.child(i);
+        if (child?.type === 'block') return child;
+      }
+      return undefined;
+    }
+    if (current.type === 'block' || current.type === 'method_declaration'
+      || current.type === 'constructor_declaration' || current.type === 'local_function_statement'
+      || current.type === 'lambda_expression') return undefined;
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** Check if a C# declaration type node represents a nullable type.
+ *  Checks for nullable_type AST node or '?' in the type text (e.g., User?). */
+const isCSharpNullableDecl = (declTypeNode: SyntaxNode): boolean => {
+  if (declTypeNode.type === 'nullable_type') return true;
+  return declTypeNode.text.includes('?');
+};
+
+const extractPatternBinding: PatternBindingExtractor = (node, scopeEnv, declarationTypeNodes, scope) => {
+  // is_pattern_expression: `obj is User user` — has a declaration_pattern child
+  // Also handles `x is not null` for null-check narrowing
+  if (node.type === 'is_pattern_expression') {
+    const pattern = node.childForFieldName('pattern');
+    if (!pattern) return undefined;
+
+    // Standard type pattern: `obj is User user`
+    if (pattern.type === 'declaration_pattern' || pattern.type === 'recursive_pattern') {
+      const typeNode = pattern.childForFieldName('type');
+      const nameNode = pattern.childForFieldName('name');
+      if (!typeNode || !nameNode) return undefined;
+      const typeName = extractSimpleTypeName(typeNode);
+      const varName = extractVarName(nameNode);
+      if (!typeName || !varName) return undefined;
+      return { varName, typeName };
+    }
+
+    // Null-check: `x is not null` — negated_pattern > constant_pattern > null_literal
+    if (pattern.type === 'negated_pattern') {
+      const inner = pattern.firstNamedChild;
+      if (inner?.type === 'constant_pattern') {
+        const literal = inner.firstNamedChild ?? inner.firstChild;
+        if (literal?.type === 'null_literal' || literal?.text === 'null') {
+          const expr = node.childForFieldName('expression');
+          if (!expr || expr.type !== 'identifier') return undefined;
+          const varName = expr.text;
+          const resolvedType = scopeEnv.get(varName);
+          if (!resolvedType) return undefined;
+          // Verify the original declaration was nullable
+          const declTypeNode = declarationTypeNodes.get(`${scope}\0${varName}`);
+          if (!declTypeNode || !isCSharpNullableDecl(declTypeNode)) return undefined;
+          const ifBody = findCSharpIfConsequenceBlock(node);
+          if (!ifBody) return undefined;
+          return {
+            varName,
+            typeName: resolvedType,
+            narrowingRange: { startIndex: ifBody.startIndex, endIndex: ifBody.endIndex },
+          };
+        }
+      }
+    }
+    return undefined;
+  }
+  // declaration_pattern / recursive_pattern: standalone in switch statements and switch expressions
+  // `case User u:` or `User u =>` or `User { Name: "Alice" } u =>`
+  // Both use the same 'type' and 'name' fields.
+  if (node.type === 'declaration_pattern' || node.type === 'recursive_pattern') {
+    const typeNode = node.childForFieldName('type');
+    const nameNode = node.childForFieldName('name');
+    if (!typeNode || !nameNode) return undefined;
+    const typeName = extractSimpleTypeName(typeNode);
+    const varName = extractVarName(nameNode);
+    if (!typeName || !varName) return undefined;
+    return { varName, typeName };
+  }
+  // Null-check: `x != null` — binary_expression with != operator
+  if (node.type === 'binary_expression') {
+    const op = node.children.find(c => !c.isNamed && c.text === '!=');
+    if (!op) return undefined;
+    const left = node.namedChild(0);
+    const right = node.namedChild(1);
+    if (!left || !right) return undefined;
+    let varNode: SyntaxNode | undefined;
+    if (left.type === 'identifier' && (right.type === 'null_literal' || right.text === 'null')) {
+      varNode = left;
+    } else if (right.type === 'identifier' && (left.type === 'null_literal' || left.text === 'null')) {
+      varNode = right;
+    }
+    if (!varNode) return undefined;
+    const varName = varNode.text;
+    const resolvedType = scopeEnv.get(varName);
+    if (!resolvedType) return undefined;
+    // Verify the original declaration was nullable
+    const declTypeNode = declarationTypeNodes.get(`${scope}\0${varName}`);
+    if (!declTypeNode || !isCSharpNullableDecl(declTypeNode)) return undefined;
+    const ifBody = findCSharpIfConsequenceBlock(node);
+    if (!ifBody) return undefined;
+    return {
+      varName,
+      typeName: resolvedType,
+      narrowingRange: { startIndex: ifBody.startIndex, endIndex: ifBody.endIndex },
+    };
+  }
+  return undefined;
+};
+
+/** C#: var alias = u → variable_declarator with name + equals_value_clause.
+ *  Only local_declaration_statement and variable_declaration contain variable_declarator children;
+ *  is_pattern_expression and field_declaration never do — skip them early. */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type === 'is_pattern_expression' || node.type === 'field_declaration') return undefined;
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (!child || child.type !== 'variable_declarator') continue;
+    const nameNode = child.childForFieldName('name');
+    if (!nameNode) continue;
+    const lhs = nameNode.text;
+    if (scopeEnv.has(lhs)) continue;
+    // C# wraps value in equals_value_clause; fall back to last named child
+    let evc: SyntaxNode | null = null;
+    for (let j = 0; j < child.childCount; j++) {
+      if (child.child(j)?.type === 'equals_value_clause') { evc = child.child(j); break; }
+    }
+    const valueNode = evc?.firstNamedChild ?? child.namedChild(child.namedChildCount - 1);
+    if (valueNode && valueNode !== nameNode && (valueNode.type === 'identifier' || valueNode.type === 'simple_identifier')) {
+      return { kind: 'copy', lhs, rhs: valueNode.text };
+    }
+    // member_access_expression RHS → fieldAccess (a.Field)
+    if (valueNode?.type === 'member_access_expression') {
+      const expr = valueNode.childForFieldName('expression');
+      const name = valueNode.childForFieldName('name');
+      if (expr?.type === 'identifier' && name?.type === 'identifier') {
+        return { kind: 'fieldAccess', lhs, receiver: expr.text, field: name.text };
+      }
+    }
+    // invocation_expression RHS
+    if (valueNode?.type === 'invocation_expression') {
+      const funcNode = valueNode.firstNamedChild;
+      if (funcNode?.type === 'identifier_name' || funcNode?.type === 'identifier') {
+        return { kind: 'callResult', lhs, callee: funcNode.text };
+      }
+      // method call with receiver → methodCallResult: a.GetC()
+      if (funcNode?.type === 'member_access_expression') {
+        const expr = funcNode.childForFieldName('expression');
+        const name = funcNode.childForFieldName('name');
+        if (expr?.type === 'identifier' && name?.type === 'identifier') {
+          return { kind: 'methodCallResult', lhs, receiver: expr.text, method: name.text };
+        }
+      }
+    }
+    // await_expression → unwrap and check inner
+    if (valueNode?.type === 'await_expression') {
+      const inner = valueNode.firstNamedChild;
+      if (inner?.type === 'invocation_expression') {
+        const funcNode = inner.firstNamedChild;
+        if (funcNode?.type === 'identifier_name' || funcNode?.type === 'identifier') {
+          return { kind: 'callResult', lhs, callee: funcNode.text };
+        }
+        if (funcNode?.type === 'member_access_expression') {
+          const expr = funcNode.childForFieldName('expression');
+          const name = funcNode.childForFieldName('name');
+          if (expr?.type === 'identifier' && name?.type === 'identifier') {
+            return { kind: 'methodCallResult', lhs, receiver: expr.text, method: name.text };
+          }
+        }
+      }
+    }
+  }
+  return undefined;
+};
+
+/** Infer the type of a literal AST node for C# overload disambiguation. */
+const inferLiteralType: LiteralTypeInferrer = (node) => {
+  switch (node.type) {
+    case 'integer_literal':
+      if (node.text.endsWith('L') || node.text.endsWith('l')) return 'long';
+      return 'int';
+    case 'real_literal':
+      if (node.text.endsWith('f') || node.text.endsWith('F')) return 'float';
+      if (node.text.endsWith('m') || node.text.endsWith('M')) return 'decimal';
+      return 'double';
+    case 'string_literal':
+    case 'verbatim_string_literal':
+    case 'raw_string_literal':
+    case 'interpolated_string_expression':
+      return 'string';
+    case 'character_literal':
+      return 'char';
+    case 'boolean_literal':
+      return 'bool';
+    case 'null_literal':
+      return 'null';
+    default:
+      return undefined;
+  }
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
+  patternBindingNodeTypes: new Set(['is_pattern_expression', 'declaration_pattern', 'recursive_pattern', 'binary_expression']),
   extractDeclaration,
   extractParameter,
   scanConstructorBinding,
+  extractForLoopBinding,
+  extractPendingAssignment,
+  extractPatternBinding,
+  inferLiteralType,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/go.ts b/gitnexus/src/core/ingestion/type-extractors/go.ts
index 6a5c13d9b..138899a8d 100644
--- a/gitnexus/src/core/ingestion/type-extractors/go.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/go.ts
@@ -1,6 +1,6 @@
 import type { SyntaxNode } from '../utils.js';
-import type { ConstructorBindingScanner, LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor } from './types.js';
-import { extractSimpleTypeName, extractVarName } from './shared.js';
+import type { ConstructorBindingScanner, ForLoopExtractor, LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, PendingAssignmentExtractor } from './types.js';
+import { extractSimpleTypeName, extractVarName, extractElementTypeFromString, extractGenericTypeArgs, resolveIterableElementType, methodToTypeArgPosition, type TypeArgPosition } from './shared.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'var_declaration',
@@ -181,9 +181,303 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName: leftIds[0].text, calleeName };
 };
 
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'for_statement',
+]);
+
+/** Go function/method node types that carry a parameter list. */
+const GO_FUNCTION_NODE_TYPES = new Set([
+  'function_declaration', 'method_declaration', 'func_literal',
+]);
+
+/**
+ * Extract element type from a Go type annotation AST node.
+ * Handles:
+ *   slice_type "[]User"  →  element field → type_identifier "User"
+ *   array_type "[10]User" →  element field → type_identifier "User"
+ * Falls back to text-based extraction via extractElementTypeFromString.
+ */
+const extractGoElementTypeFromTypeNode = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  // slice_type: []User — element field is the element type
+  if (typeNode.type === 'slice_type' || typeNode.type === 'array_type') {
+    const elemNode = typeNode.childForFieldName('element');
+    if (elemNode) return extractSimpleTypeName(elemNode);
+  }
+  // map_type: map[string]User — value field is the element type (for range, second var gets value)
+  if (typeNode.type === 'map_type') {
+    const valueNode = typeNode.childForFieldName('value');
+    if (valueNode) return extractSimpleTypeName(valueNode);
+  }
+  // channel_type: chan User — the type argument is the element type
+  if (typeNode.type === 'channel_type') {
+    const valueNode = typeNode.childForFieldName('value') ?? typeNode.lastNamedChild;
+    if (valueNode) return extractSimpleTypeName(valueNode);
+  }
+  // generic_type: Go 1.18+ generics (e.g., MySlice[User], Cache[string, User])
+  // Use position-aware arg selection: 'first' for keys, 'last' for values.
+  if (typeNode.type === 'generic_type') {
+    const args = extractGenericTypeArgs(typeNode);
+    if (args.length >= 1) return pos === 'first' ? args[0] : args[args.length - 1];
+  }
+  // Fallback: text-based extraction ([]User → User, User[] → User)
+  return extractElementTypeFromString(typeNode.text, pos);
+};
+
+/** Check if a Go type node represents a channel type. Used to determine
+ *  whether single-var range yields the element (channels) vs index (slices/maps). */
+const isChannelType = (
+  iterableName: string,
+  scopeEnv: ReadonlyMap<string, string>,
+  declarationTypeNodes?: ReadonlyMap<string, SyntaxNode>,
+  scope?: string,
+): boolean => {
+  if (declarationTypeNodes && scope) {
+    const typeNode = declarationTypeNodes.get(`${scope}\0${iterableName}`);
+    if (typeNode) return typeNode.type === 'channel_type';
+  }
+  const t = scopeEnv.get(iterableName);
+  return !!t && t.startsWith('chan ');
+};
+
+/**
+ * Walk up the AST from a for-statement to find the enclosing function declaration,
+ * then search its parameters for one named `iterableName`.
+ * Returns the element type extracted from its type annotation, or undefined.
+ *
+ * Go parameter_declaration has:
+ *   name field: identifier (the parameter name)
+ *   type field: the type node (slice_type for []User)
+ */
+const findGoParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (GO_FUNCTION_NODE_TYPES.has(current.type)) {
+      const paramsNode = current.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const paramDecl = paramsNode.namedChild(i);
+          if (!paramDecl || paramDecl.type !== 'parameter_declaration') continue;
+          // parameter_declaration: name type — name field is the identifier
+          const nameNode = paramDecl.childForFieldName('name');
+          if (nameNode?.text === iterableName) {
+            const typeNode = paramDecl.childForFieldName('type');
+            if (typeNode) return extractGoElementTypeFromTypeNode(typeNode, pos);
+          }
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/**
+ * Go: for _, user := range users where users has a known slice type.
+ *
+ * Go uses a single `for_statement` node for all for-loop forms. We detect
+ * range-based loops by looking for a `range_clause` child node. C-style for
+ * loops (with `for_clause`) and infinite loops (no clause) are ignored.
+ *
+ * Tier 1c: resolves the element type via three strategies in priority order:
+ *   1. declarationTypeNodes — raw type annotation AST node
+ *   2. scopeEnv string — extractElementTypeFromString on the stored type
+ *   3. AST walk — walks up to the enclosing function's parameters to read []User directly
+ * For `_, user := range users`, the loop variable is the second identifier in
+ * the `left` expression_list (index is discarded, value is the element).
+ */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  if (node.type !== 'for_statement') return;
+
+  // Find the range_clause child — this distinguishes range loops from other for forms.
+  let rangeClause: SyntaxNode | null = null;
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (child?.type === 'range_clause') {
+      rangeClause = child;
+      break;
+    }
+  }
+  if (!rangeClause) return;
+
+  // The iterable is the `right` field of the range_clause.
+  const rightNode = rangeClause.childForFieldName('right');
+  let iterableName: string | undefined;
+  let callExprElementType: string | undefined;
+  if (rightNode?.type === 'identifier') {
+    iterableName = rightNode.text;
+  } else if (rightNode?.type === 'selector_expression') {
+    const field = rightNode.childForFieldName('field');
+    if (field) iterableName = field.text;
+  } else if (rightNode?.type === 'call_expression') {
+    // Range over a call result: `for _, v := range getItems()` or `for _, v := range repo.All()`
+    const funcNode = rightNode.childForFieldName('function');
+    let callee: string | undefined;
+    if (funcNode?.type === 'identifier') {
+      callee = funcNode.text;
+    } else if (funcNode?.type === 'selector_expression') {
+      const field = funcNode.childForFieldName('field');
+      if (field) callee = field.text;
+    }
+    if (callee) {
+      const rawReturn = returnTypeLookup.lookupRawReturnType(callee);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    const containerTypeName = scopeEnv.get(iterableName!);
+    const typeArgPos = methodToTypeArgPosition(undefined, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractGoElementTypeFromTypeNode, findGoParamElementType,
+      typeArgPos,
+    );
+  }
+  if (!elementType) return;
+
+  // The loop variable(s) are in the `left` field.
+  // Go range semantics:
+  //   Slice/Array/String: single-var → INDEX (int); two-var → (index, element)
+  //   Map:                single-var → KEY; two-var → (key, value)
+  //   Channel:            single-var → ELEMENT (channels have no index)
+  const leftNode = rangeClause.childForFieldName('left');
+  if (!leftNode) return;
+
+  let loopVarNode: SyntaxNode | null = null;
+  if (leftNode.type === 'expression_list') {
+    if (leftNode.namedChildCount >= 2) {
+      // Two-var form: `_, user` or `i, user` — second variable gets element/value type
+      loopVarNode = leftNode.namedChild(1);
+    } else {
+      // Single-var in expression_list — yields INDEX for slices/maps, ELEMENT for channels.
+      // For call-expression iterables (iterableName undefined), conservative: treat as non-channel.
+      // Channels are rarely returned from function calls, and even if they were, skipping here
+      // just means we miss a binding rather than create an incorrect one.
+      if (iterableName && isChannelType(iterableName, scopeEnv, declarationTypeNodes, scope)) {
+        loopVarNode = leftNode.namedChild(0);
+      } else {
+        return; // index-only range on slice/map — skip
+      }
+    }
+  } else {
+    // Plain identifier (single-var form without expression_list)
+    // For call-expression iterables (iterableName undefined), conservative: treat as non-channel.
+    // Channels are rarely returned from function calls, and even if they were, skipping here
+    // just means we miss a binding rather than create an incorrect one.
+    if (iterableName && isChannelType(iterableName, scopeEnv, declarationTypeNodes, scope)) {
+      loopVarNode = leftNode;
+    } else {
+      return; // index-only range on slice/map — skip
+    }
+  }
+  if (!loopVarNode) return;
+
+  // Skip the blank identifier `_`
+  if (loopVarNode.text === '_') return;
+
+  const loopVarName = extractVarName(loopVarNode);
+  if (loopVarName) scopeEnv.set(loopVarName, elementType);
+};
+
+/** Go: alias := u (short_var_declaration) or var b = u (var_spec) */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type === 'short_var_declaration') {
+    const left = node.childForFieldName('left');
+    const right = node.childForFieldName('right');
+    if (!left || !right) return undefined;
+    const lhsNode = left.type === 'expression_list' ? left.firstNamedChild : left;
+    const rhsNode = right.type === 'expression_list' ? right.firstNamedChild : right;
+    if (!lhsNode || !rhsNode) return undefined;
+    if (lhsNode.type !== 'identifier') return undefined;
+    const lhs = lhsNode.text;
+    if (scopeEnv.has(lhs)) return undefined;
+    if (rhsNode.type === 'identifier') return { kind: 'copy', lhs, rhs: rhsNode.text };
+    // selector_expression RHS → fieldAccess (a.field)
+    if (rhsNode.type === 'selector_expression') {
+      const operand = rhsNode.childForFieldName('operand');
+      const field = rhsNode.childForFieldName('field');
+      if (operand?.type === 'identifier' && field) {
+        return { kind: 'fieldAccess', lhs, receiver: operand.text, field: field.text };
+      }
+    }
+    // call_expression RHS
+    if (rhsNode.type === 'call_expression') {
+      const funcNode = rhsNode.childForFieldName('function');
+      if (funcNode?.type === 'identifier') {
+        return { kind: 'callResult', lhs, callee: funcNode.text };
+      }
+      // method call with receiver: call_expression → function: selector_expression
+      if (funcNode?.type === 'selector_expression') {
+        const operand = funcNode.childForFieldName('operand');
+        const field = funcNode.childForFieldName('field');
+        if (operand?.type === 'identifier' && field) {
+          return { kind: 'methodCallResult', lhs, receiver: operand.text, method: field.text };
+        }
+      }
+    }
+    return undefined;
+  }
+  if (node.type === 'var_spec' || node.type === 'var_declaration') {
+    // var_declaration contains var_spec children; var_spec has name + expression_list value
+    const specs: SyntaxNode[] = [];
+    if (node.type === 'var_declaration') {
+      for (let i = 0; i < node.namedChildCount; i++) {
+        const c = node.namedChild(i);
+        if (c?.type === 'var_spec') specs.push(c);
+      }
+    } else {
+      specs.push(node);
+    }
+    for (const spec of specs) {
+      const nameNode = spec.childForFieldName('name');
+      if (!nameNode || nameNode.type !== 'identifier') continue;
+      const lhs = nameNode.text;
+      if (scopeEnv.has(lhs)) continue;
+      // Check if the last named child is a bare identifier (no type annotation between name and value)
+      let exprList: SyntaxNode | null = null;
+      for (let i = 0; i < spec.childCount; i++) {
+        if (spec.child(i)?.type === 'expression_list') { exprList = spec.child(i); break; }
+      }
+      const rhsNode = exprList?.firstNamedChild;
+      if (rhsNode?.type === 'identifier') return { kind: 'copy', lhs, rhs: rhsNode.text };
+      // selector_expression RHS → fieldAccess
+      if (rhsNode?.type === 'selector_expression') {
+        const operand = rhsNode.childForFieldName('operand');
+        const field = rhsNode.childForFieldName('field');
+        if (operand?.type === 'identifier' && field) {
+          return { kind: 'fieldAccess', lhs, receiver: operand.text, field: field.text };
+        }
+      }
+      // call_expression RHS
+      if (rhsNode?.type === 'call_expression') {
+        const funcNode = rhsNode.childForFieldName('function');
+        if (funcNode?.type === 'identifier') {
+          return { kind: 'callResult', lhs, callee: funcNode.text };
+        }
+        if (funcNode?.type === 'selector_expression') {
+          const operand = funcNode.childForFieldName('operand');
+          const field = funcNode.childForFieldName('field');
+          if (operand?.type === 'identifier' && field) {
+            return { kind: 'methodCallResult', lhs, receiver: operand.text, method: field.text };
+          }
+        }
+      }
+    }
+  }
+  return undefined;
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
   extractDeclaration,
   extractParameter,
   scanConstructorBinding,
+  extractForLoopBinding,
+  extractPendingAssignment,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/index.ts b/gitnexus/src/core/ingestion/type-extractors/index.ts
index 98f62bdf7..adcf8fd9c 100644
--- a/gitnexus/src/core/ingestion/type-extractors/index.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/index.ts
@@ -33,12 +33,19 @@ export const typeConfigs = {
   [SupportedLanguages.Ruby]: rubyConfig,
 } satisfies Record<SupportedLanguages, LanguageTypeConfig>;
 
-export type { LanguageTypeConfig, TypeBindingExtractor, ParameterExtractor, ConstructorBindingScanner } from './types.js';
+export type {
+  LanguageTypeConfig,
+  TypeBindingExtractor,
+  ParameterExtractor,
+  ConstructorBindingScanner,
+  ForLoopExtractor,
+  PendingAssignmentExtractor,
+  PatternBindingExtractor,
+} from './types.js';
 export { 
   TYPED_PARAMETER_TYPES,
   extractSimpleTypeName,
   extractGenericTypeArgs,
   extractVarName,
-  findChildByType,
   extractRubyConstructorAssignment
 } from './shared.js';
diff --git a/gitnexus/src/core/ingestion/type-extractors/jvm.ts b/gitnexus/src/core/ingestion/type-extractors/jvm.ts
index 05e9168be..f184e3330 100644
--- a/gitnexus/src/core/ingestion/type-extractors/jvm.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/jvm.ts
@@ -1,6 +1,7 @@
 import type { SyntaxNode } from '../utils.js';
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner } from './types.js';
-import { extractSimpleTypeName, extractVarName, findChildByType } from './shared.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ForLoopExtractor, PendingAssignmentExtractor, PatternBindingExtractor, LiteralTypeInferrer, ConstructorTypeDetector } from './types.js';
+import { extractSimpleTypeName, extractVarName, extractGenericTypeArgs, resolveIterableElementType, methodToTypeArgPosition, extractElementTypeFromString, type TypeArgPosition } from './shared.js';
+import { findChild } from '../resolvers/utils.js';
 
 // ── Java ──────────────────────────────────────────────────────────────────
 
@@ -73,7 +74,7 @@ const scanJavaConstructorBinding: ConstructorBindingScanner = (node) => {
   const typeNode = node.childForFieldName('type');
   if (!typeNode) return undefined;
   if (typeNode.text !== 'var') return undefined;
-  const declarator = node.namedChildren.find((c: SyntaxNode) => c.type === 'variable_declarator');
+  const declarator = findChild(node, 'variable_declarator');
   if (!declarator) return undefined;
   const nameNode = declarator.childForFieldName('name');
   const value = declarator.childForFieldName('value');
@@ -85,12 +86,233 @@ const scanJavaConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName: nameNode.text, calleeName: methodName.text };
 };
 
+const JAVA_FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'enhanced_for_statement',
+]);
+
+/** Extract element type from a Java type annotation AST node.
+ *  Handles generic_type (List<User>), array_type (User[]). */
+const extractJavaElementTypeFromTypeNode = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  if (typeNode.type === 'generic_type') {
+    const args = extractGenericTypeArgs(typeNode);
+    if (args.length >= 1) return pos === 'first' ? args[0] : args[args.length - 1];
+  }
+  if (typeNode.type === 'array_type') {
+    const elemNode = typeNode.firstNamedChild;
+    if (elemNode) return extractSimpleTypeName(elemNode);
+  }
+  return undefined;
+};
+
+/** Walk up from a for-each to the enclosing method_declaration and search parameters. */
+const findJavaParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'method_declaration' || current.type === 'constructor_declaration') {
+      const paramsNode = current.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param || param.type !== 'formal_parameter') continue;
+          const nameNode = param.childForFieldName('name');
+          if (nameNode?.text !== iterableName) continue;
+          const typeNode = param.childForFieldName('type');
+          if (typeNode) return extractJavaElementTypeFromTypeNode(typeNode, pos);
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** Java: for (User user : users) — extract loop variable binding.
+ *  Tier 1c: for `for (var user : users)`, resolves element type from iterable. */
+const extractJavaForLoopBinding: ForLoopExtractor = (node,  { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  const typeNode = node.childForFieldName('type');
+  const nameNode = node.childForFieldName('name');
+  if (!typeNode || !nameNode) return;
+  const varName = extractVarName(nameNode);
+  if (!varName) return;
+
+  // Explicit type (existing behavior): for (User user : users)
+  const typeName = extractSimpleTypeName(typeNode);
+  if (typeName && typeName !== 'var') {
+    scopeEnv.set(varName, typeName);
+    return;
+  }
+
+  // Tier 1c: var — resolve from iterable's container type
+  const iterableNode = node.childForFieldName('value');
+  if (!iterableNode) return;
+
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  let callExprElementType: string | undefined;
+  if (iterableNode.type === 'identifier') {
+    iterableName = iterableNode.text;
+  } else if (iterableNode.type === 'field_access') {
+    const field = iterableNode.childForFieldName('field');
+    if (field) iterableName = field.text;
+  } else if (iterableNode.type === 'method_invocation') {
+    // data.keySet() → method_invocation > object: identifier + name: identifier
+    // Also handles this.data.values() → object is field_access, extract inner field name
+    const obj = iterableNode.childForFieldName('object');
+    const name = iterableNode.childForFieldName('name');
+    if (obj?.type === 'identifier') {
+      iterableName = obj.text;
+    } else if (obj?.type === 'field_access') {
+      const innerField = obj.childForFieldName('field');
+      if (innerField) iterableName = innerField.text;
+    } else if (!obj && name) {
+      // Direct function call: for (var u : getUsers()) — no receiver object
+      const rawReturn = returnTypeLookup.lookupRawReturnType(name.text);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+    if (name) methodName = name.text;
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    const containerTypeName = scopeEnv.get(iterableName!);
+    const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractJavaElementTypeFromTypeNode, findJavaParamElementType,
+      typeArgPos,
+    );
+  }
+  if (elementType) scopeEnv.set(varName, elementType);
+};
+
+/** Java: var alias = u → local_variable_declaration > variable_declarator with name/value */
+const extractJavaPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (!child || child.type !== 'variable_declarator') continue;
+    const nameNode = child.childForFieldName('name');
+    const valueNode = child.childForFieldName('value');
+    if (!nameNode || !valueNode) continue;
+    const lhs = nameNode.text;
+    if (scopeEnv.has(lhs)) continue;
+    if (valueNode.type === 'identifier' || valueNode.type === 'simple_identifier') return { kind: 'copy', lhs, rhs: valueNode.text };
+    // field_access RHS → fieldAccess (a.field)
+    if (valueNode.type === 'field_access') {
+      const obj = valueNode.childForFieldName('object');
+      const field = valueNode.childForFieldName('field');
+      if (obj?.type === 'identifier' && field) {
+        return { kind: 'fieldAccess', lhs, receiver: obj.text, field: field.text };
+      }
+    }
+    // method_invocation RHS
+    if (valueNode.type === 'method_invocation') {
+      const objField = valueNode.childForFieldName('object');
+      if (!objField) {
+        // No receiver → callResult
+        const nameField = valueNode.childForFieldName('name');
+        if (nameField?.type === 'identifier') {
+          return { kind: 'callResult', lhs, callee: nameField.text };
+        }
+      } else if (objField.type === 'identifier') {
+        // With receiver → methodCallResult
+        const nameField = valueNode.childForFieldName('name');
+        if (nameField?.type === 'identifier') {
+          return { kind: 'methodCallResult', lhs, receiver: objField.text, method: nameField.text };
+        }
+      }
+    }
+  }
+  return undefined;
+};
+
+/**
+ * Java 16+ `instanceof` pattern variable: `x instanceof User user`
+ *
+ * AST structure:
+ *   instanceof_expression
+ *     left: expression (the variable being tested)
+ *     instanceof keyword
+ *     right: type (the type to test against)
+ *     name: identifier (the pattern variable — optional, Java 16+)
+ *
+ * Conservative: returns undefined when the `name` field is absent (plain instanceof
+ * without pattern variable, e.g. `x instanceof User`) or when the type cannot be
+ * extracted. The source variable's existing type is NOT used — the pattern explicitly
+ * declares the new type, so no scopeEnv lookup is needed.
+ */
+const extractJavaPatternBinding: PatternBindingExtractor = (node) => {
+  if (node.type === 'type_pattern') {
+    // Java 17+ switch pattern: case User u -> ...
+    // type_pattern has positional children (NO named fields):
+    //   namedChild(0) = type (type_identifier, e.g., User)
+    //   namedChild(1) = identifier (e.g., u)
+    const typeNode = node.namedChild(0);
+    const nameNode = node.namedChild(1);
+    if (!typeNode || !nameNode) return undefined;
+    const typeName = extractSimpleTypeName(typeNode);
+    const varName = extractVarName(nameNode);
+    if (!typeName || !varName) return undefined;
+    return { varName, typeName };
+  }
+  if (node.type !== 'instanceof_expression') return undefined;
+  const nameNode = node.childForFieldName('name');
+  if (!nameNode) return undefined;
+  const typeNode = node.childForFieldName('right');
+  if (!typeNode) return undefined;
+  const typeName = extractSimpleTypeName(typeNode);
+  const varName = extractVarName(nameNode);
+  if (!typeName || !varName) return undefined;
+  return { varName, typeName };
+};
+
+/** Infer the type of a literal AST node for Java/Kotlin overload disambiguation. */
+const inferJvmLiteralType: LiteralTypeInferrer = (node) => {
+  switch (node.type) {
+    case 'decimal_integer_literal':
+    case 'integer_literal':
+    case 'hex_integer_literal':
+    case 'octal_integer_literal':
+    case 'binary_integer_literal':
+      // Check for long suffix
+      if (node.text.endsWith('L') || node.text.endsWith('l')) return 'long';
+      return 'int';
+    case 'decimal_floating_point_literal':
+    case 'real_literal':
+      if (node.text.endsWith('f') || node.text.endsWith('F')) return 'float';
+      return 'double';
+    case 'string_literal':
+    case 'line_string_literal':
+    case 'multi_line_string_literal':
+      return 'String';
+    case 'character_literal':
+      return 'char';
+    case 'true':
+    case 'false':
+    case 'boolean_literal':
+      return 'boolean';
+    case 'null_literal':
+      return 'null';
+    default:
+      return undefined;
+  }
+};
+
 export const javaTypeConfig: LanguageTypeConfig = {
   declarationNodeTypes: JAVA_DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: JAVA_FOR_LOOP_NODE_TYPES,
+  patternBindingNodeTypes: new Set(['instanceof_expression', 'type_pattern']),
   extractDeclaration: extractJavaDeclaration,
   extractParameter: extractJavaParameter,
   extractInitializer: extractJavaInitializer,
   scanConstructorBinding: scanJavaConstructorBinding,
+  extractForLoopBinding: extractJavaForLoopBinding,
+  extractPendingAssignment: extractJavaPendingAssignment,
+  extractPatternBinding: extractJavaPatternBinding,
+  inferLiteralType: inferJvmLiteralType,
 };
 
 // ── Kotlin ────────────────────────────────────────────────────────────────
@@ -104,10 +326,11 @@ const KOTLIN_DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
 const extractKotlinDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<string, string>): void => {
   if (node.type === 'property_declaration') {
     // Kotlin property_declaration: name/type are inside a variable_declaration child
-    const varDecl = findChildByType(node, 'variable_declaration');
+    const varDecl = findChild(node, 'variable_declaration');
     if (varDecl) {
-      const nameNode = findChildByType(varDecl, 'simple_identifier');
-      const typeNode = findChildByType(varDecl, 'user_type');
+      const nameNode = findChild(varDecl, 'simple_identifier');
+      const typeNode = findChild(varDecl, 'user_type')
+        ?? findChild(varDecl, 'nullable_type');
       if (!nameNode || !typeNode) return;
       const varName = extractVarName(nameNode);
       const typeName = extractSimpleTypeName(typeNode);
@@ -116,17 +339,17 @@ const extractKotlinDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: M
     }
     // Fallback: try direct fields
     const nameNode = node.childForFieldName('name')
-      ?? findChildByType(node, 'simple_identifier');
+      ?? findChild(node, 'simple_identifier');
     const typeNode = node.childForFieldName('type')
-      ?? findChildByType(node, 'user_type');
+      ?? findChild(node, 'user_type');
     if (!nameNode || !typeNode) return;
     const varName = extractVarName(nameNode);
     const typeName = extractSimpleTypeName(typeNode);
     if (varName && typeName) env.set(varName, typeName);
   } else if (node.type === 'variable_declaration') {
     // variable_declaration directly inside functions
-    const nameNode = findChildByType(node, 'simple_identifier');
-    const typeNode = findChildByType(node, 'user_type');
+    const nameNode = findChild(node, 'simple_identifier');
+    const typeNode = findChild(node, 'user_type');
     if (nameNode && typeNode) {
       const varName = extractVarName(nameNode);
       const typeName = extractSimpleTypeName(typeNode);
@@ -135,7 +358,10 @@ const extractKotlinDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: M
   }
 };
 
-/** Kotlin: formal_parameter → type name */
+/** Kotlin: parameter / formal_parameter → type name.
+ *  Kotlin's tree-sitter grammar uses positional children (simple_identifier, user_type)
+ *  rather than named fields (name, type) on `parameter` nodes, so we fall back to
+ *  findChild when childForFieldName returns null. */
 const extractKotlinParameter: ParameterExtractor = (node: SyntaxNode, env: Map<string, string>): void => {
   let nameNode: SyntaxNode | null = null;
   let typeNode: SyntaxNode | null = null;
@@ -148,50 +374,67 @@ const extractKotlinParameter: ParameterExtractor = (node: SyntaxNode, env: Map<s
     typeNode = node.childForFieldName('type');
   }
 
+  // Fallback: Kotlin `parameter` nodes use positional children, not named fields
+  if (!nameNode) nameNode = findChild(node, 'simple_identifier');
+  if (!typeNode) typeNode = findChild(node, 'user_type')
+    ?? findChild(node, 'nullable_type');
+
   if (!nameNode || !typeNode) return;
   const varName = extractVarName(nameNode);
   const typeName = extractSimpleTypeName(typeNode);
   if (varName && typeName) env.set(varName, typeName);
 };
 
+/** Find the constructor callee name in a Kotlin property_declaration's initializer.
+ *  Returns the class name if the callee is a verified class constructor, undefined otherwise. */
+const findKotlinConstructorCallee = (node: SyntaxNode, classNames: ClassNameLookup): string | undefined => {
+  if (node.type !== 'property_declaration') return undefined;
+  const value = node.childForFieldName('value')
+    ?? findChild(node, 'call_expression');
+  if (!value || value.type !== 'call_expression') return undefined;
+  const callee = value.firstNamedChild;
+  if (!callee || callee.type !== 'simple_identifier') return undefined;
+  const calleeName = callee.text;
+  if (!calleeName || !classNames.has(calleeName)) return undefined;
+  return calleeName;
+};
+
 /** Kotlin: val user = User() — infer type from call_expression when callee is a known class.
  *  Kotlin constructors are syntactically identical to function calls, so we verify
  *  against classNames (which may include cross-file SymbolTable lookups). */
 const extractKotlinInitializer: InitializerExtractor = (node: SyntaxNode, env: Map<string, string>, classNames: ClassNameLookup): void => {
-  if (node.type !== 'property_declaration') return;
   // Skip if there's an explicit type annotation — Tier 0 already handled it
-  const varDecl = findChildByType(node, 'variable_declaration');
-  if (varDecl && findChildByType(varDecl, 'user_type')) return;
+  const varDecl = findChild(node, 'variable_declaration');
+  if (varDecl && findChild(varDecl, 'user_type')) return;
 
-  // Get the initializer value — the call_expression after '='
-  const value = node.childForFieldName('value')
-    ?? findChildByType(node, 'call_expression');
-  if (!value || value.type !== 'call_expression') return;
-
-  // The callee is the first child of call_expression (simple_identifier for direct calls)
-  const callee = value.firstNamedChild;
-  if (!callee || callee.type !== 'simple_identifier') return;
-
-  const calleeName = callee.text;
-  if (!calleeName || !classNames.has(calleeName)) return;
+  const calleeName = findKotlinConstructorCallee(node, classNames);
+  if (!calleeName) return;
 
   // Extract the variable name from the variable_declaration inside property_declaration
   const nameNode = varDecl
-    ? findChildByType(varDecl, 'simple_identifier')
-    : findChildByType(node, 'simple_identifier');
+    ? findChild(varDecl, 'simple_identifier')
+    : findChild(node, 'simple_identifier');
   if (!nameNode) return;
 
   const varName = extractVarName(nameNode);
   if (varName) env.set(varName, calleeName);
 };
 
+/** Kotlin: detect constructor type from call_expression in typed declarations.
+ *  Unlike extractKotlinInitializer (which SKIPS typed declarations), this detects
+ *  the constructor type EVEN when a type annotation exists, enabling virtual dispatch
+ *  for patterns like `val a: Animal = Dog()`. */
+const detectKotlinConstructorType: ConstructorTypeDetector = (node, classNames) => {
+  return findKotlinConstructorCallee(node, classNames);
+};
+
 /** Kotlin: val x = User(...) — constructor binding for property_declaration with call_expression */
 const scanKotlinConstructorBinding: ConstructorBindingScanner = (node) => {
   if (node.type !== 'property_declaration') return undefined;
-  const varDecl = node.namedChildren.find(c => c.type === 'variable_declaration');
+  const varDecl = findChild(node, 'variable_declaration');
   if (!varDecl) return undefined;
-  if (varDecl.namedChildren.some(c => c.type === 'user_type')) return undefined;
-  const callExpr = node.namedChildren.find(c => c.type === 'call_expression');
+  if (findChild(varDecl, 'user_type')) return undefined;
+  const callExpr = findChild(node, 'call_expression');
   if (!callExpr) return undefined;
   const callee = callExpr.firstNamedChild;
   if (!callee) return undefined;
@@ -210,15 +453,338 @@ const scanKotlinConstructorBinding: ConstructorBindingScanner = (node) => {
     }
   }
   if (!calleeName) return undefined;
-  const nameNode = varDecl.namedChildren.find(c => c.type === 'simple_identifier');
+  const nameNode = findChild(varDecl, 'simple_identifier');
   if (!nameNode) return undefined;
   return { varName: nameNode.text, calleeName };
 };
 
+const KOTLIN_FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'for_statement',
+]);
+
+/** Extract element type from a Kotlin type annotation AST node (user_type wrapping generic).
+ *  Kotlin: user_type → [type_identifier, type_arguments → [type_projection → user_type]]
+ *  Handles the type_projection wrapper that Kotlin uses for generic type arguments. */
+const extractKotlinElementTypeFromTypeNode = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  if (typeNode.type === 'user_type') {
+    const argsNode = findChild(typeNode, 'type_arguments');
+    if (argsNode && argsNode.namedChildCount >= 1) {
+      const targetArg = pos === 'first'
+        ? argsNode.namedChild(0)
+        : argsNode.namedChild(argsNode.namedChildCount - 1);
+      if (!targetArg) return undefined;
+      // Kotlin wraps type args in type_projection — unwrap to get the inner type
+      const inner = targetArg.type === 'type_projection'
+        ? targetArg.firstNamedChild
+        : targetArg;
+      if (inner) return extractSimpleTypeName(inner);
+    }
+  }
+  return undefined;
+};
+
+/** Walk up from a for-loop to the enclosing function_declaration and search parameters.
+ *  Kotlin parameters use positional children (simple_identifier, user_type), not named fields. */
+const findKotlinParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'function_declaration') {
+      const paramsNode = findChild(current, 'function_value_parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param || param.type !== 'parameter') continue;
+          const nameNode = findChild(param, 'simple_identifier');
+          if (nameNode?.text !== iterableName) continue;
+          const typeNode = findChild(param, 'user_type');
+          if (typeNode) return extractKotlinElementTypeFromTypeNode(typeNode, pos);
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** Kotlin: for (user: User in users) — extract loop variable binding.
+ *  Tier 1c: for `for (user in users)` without annotation, resolves from iterable. */
+const extractKotlinForLoopBinding: ForLoopExtractor = (node, ctx): void => {
+  const { scopeEnv, declarationTypeNodes, scope, returnTypeLookup } = ctx;
+  const varDecl = findChild(node, 'variable_declaration');
+  if (!varDecl) return;
+  const nameNode = findChild(varDecl, 'simple_identifier');
+  if (!nameNode) return;
+  const varName = extractVarName(nameNode);
+  if (!varName) return;
+
+  // Explicit type annotation (existing behavior): for (user: User in users)
+  const typeNode = findChild(varDecl, 'user_type');
+  if (typeNode) {
+    const typeName = extractSimpleTypeName(typeNode);
+    if (typeName) scopeEnv.set(varName, typeName);
+    return;
+  }
+
+  // Tier 1c: no annotation — resolve from iterable's container type
+  // Kotlin for-loop children: [variable_declaration, iterable_expr, control_structure_body]
+  // The iterable is the second named child of the for_statement (after variable_declaration)
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  let fallbackIterableName: string | undefined;
+  let callExprElementType: string | undefined;
+  let foundVarDecl = false;
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (child === varDecl) { foundVarDecl = true; continue; }
+    if (!foundVarDecl || !child) continue;
+    if (child.type === 'simple_identifier') {
+      iterableName = child.text;
+      break;
+    }
+    if (child.type === 'navigation_expression') {
+      // data.keys → navigation_expression > simple_identifier(data) + navigation_suffix > simple_identifier(keys)
+      const obj = child.firstNamedChild;
+      const suffix = findChild(child, 'navigation_suffix');
+      const prop = suffix ? findChild(suffix, 'simple_identifier') : null;
+      const hasCallSuffix = suffix ? findChild(suffix, 'call_suffix') !== null : false;
+      // Always try object as iterable + property as method first (handles data.values, data.keys).
+      // For bare property access without call_suffix, also save property as fallback
+      // (handles this.users, repo.items where the property IS the iterable).
+      if (obj?.type === 'simple_identifier') iterableName = obj.text;
+      if (prop) methodName = prop.text;
+      if (!hasCallSuffix && prop) {
+        fallbackIterableName = prop.text;
+      }
+      break;
+    }
+    if (child.type === 'call_expression') {
+      // data.values() → call_expression > navigation_expression > simple_identifier + navigation_suffix
+      const callee = child.firstNamedChild;
+      if (callee?.type === 'navigation_expression') {
+        const obj = callee.firstNamedChild;
+        if (obj?.type === 'simple_identifier') iterableName = obj.text;
+        const suffix = findChild(callee, 'navigation_suffix');
+        if (suffix) {
+          const prop = findChild(suffix, 'simple_identifier');
+          if (prop) methodName = prop.text;
+        }
+      } else if (callee?.type === 'simple_identifier') {
+        // Direct function call: for (u in getUsers())
+        const rawReturn = returnTypeLookup.lookupRawReturnType(callee.text);
+        if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+      }
+      break;
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    let containerTypeName = scopeEnv.get(iterableName!);
+    // Fallback: if object has no type in scope, try the property as the iterable name.
+    // Handles patterns like this.users where the property itself is the iterable variable.
+    if (!containerTypeName && fallbackIterableName) {
+      iterableName = fallbackIterableName;
+      methodName = undefined;
+      containerTypeName = scopeEnv.get(iterableName);
+    }
+    const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractKotlinElementTypeFromTypeNode, findKotlinParamElementType,
+      typeArgPos,
+    );
+  }
+  if (elementType) scopeEnv.set(varName, elementType);
+};
+
+/** Kotlin: val alias = u → property_declaration or variable_declaration.
+ *  property_declaration has: binding_pattern_kind("val"), variable_declaration("alias"),
+ *  "=", and the RHS value (simple_identifier "u").
+ *  variable_declaration appears directly inside functions and has simple_identifier children. */
+const extractKotlinPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type === 'property_declaration') {
+    // Find the variable name from variable_declaration child
+    const varDecl = findChild(node, 'variable_declaration');
+    if (!varDecl) return undefined;
+    const nameNode = varDecl.firstNamedChild;
+    if (!nameNode || nameNode.type !== 'simple_identifier') return undefined;
+    const lhs = nameNode.text;
+    if (scopeEnv.has(lhs)) return undefined;
+    // Find the RHS after the "=" token
+    let foundEq = false;
+    for (let i = 0; i < node.childCount; i++) {
+      const child = node.child(i);
+      if (!child) continue;
+      if (child.type === '=') { foundEq = true; continue; }
+      if (foundEq && child.type === 'simple_identifier') {
+        return { kind: 'copy', lhs, rhs: child.text };
+      }
+      // navigation_expression RHS → fieldAccess (a.field)
+      if (foundEq && child.type === 'navigation_expression') {
+        const recv = child.firstNamedChild;
+        const suffix = child.lastNamedChild;
+        const fieldNode = suffix?.type === 'navigation_suffix' ? suffix.lastNamedChild : suffix;
+        if (recv?.type === 'simple_identifier' && fieldNode?.type === 'simple_identifier') {
+          return { kind: 'fieldAccess', lhs, receiver: recv.text, field: fieldNode.text };
+        }
+      }
+      // call_expression RHS
+      if (foundEq && child.type === 'call_expression') {
+        const calleeNode = child.firstNamedChild;
+        if (calleeNode?.type === 'simple_identifier') {
+          return { kind: 'callResult', lhs, callee: calleeNode.text };
+        }
+        // navigation_expression callee → methodCallResult (a.method())
+        if (calleeNode?.type === 'navigation_expression') {
+          const recv = calleeNode.firstNamedChild;
+          const suffix = calleeNode.lastNamedChild;
+          const methodNode = suffix?.type === 'navigation_suffix' ? suffix.lastNamedChild : suffix;
+          if (recv?.type === 'simple_identifier' && methodNode?.type === 'simple_identifier') {
+            return { kind: 'methodCallResult', lhs, receiver: recv.text, method: methodNode.text };
+          }
+        }
+      }
+    }
+    return undefined;
+  }
+
+  if (node.type === 'variable_declaration') {
+    // variable_declaration directly inside functions: simple_identifier children
+    const nameNode = findChild(node, 'simple_identifier');
+    if (!nameNode) return undefined;
+    const lhs = nameNode.text;
+    if (scopeEnv.has(lhs)) return undefined;
+    // Look for RHS after "=" in the parent (property_declaration)
+    const parent = node.parent;
+    if (!parent) return undefined;
+    let foundEq = false;
+    for (let i = 0; i < parent.childCount; i++) {
+      const child = parent.child(i);
+      if (!child) continue;
+      if (child.type === '=') { foundEq = true; continue; }
+      if (foundEq && child.type === 'simple_identifier') {
+        return { kind: 'copy', lhs, rhs: child.text };
+      }
+      if (foundEq && child.type === 'navigation_expression') {
+        const recv = child.firstNamedChild;
+        const suffix = child.lastNamedChild;
+        const fieldNode = suffix?.type === 'navigation_suffix' ? suffix.lastNamedChild : suffix;
+        if (recv?.type === 'simple_identifier' && fieldNode?.type === 'simple_identifier') {
+          return { kind: 'fieldAccess', lhs, receiver: recv.text, field: fieldNode.text };
+        }
+      }
+      if (foundEq && child.type === 'call_expression') {
+        const calleeNode = child.firstNamedChild;
+        if (calleeNode?.type === 'simple_identifier') {
+          return { kind: 'callResult', lhs, callee: calleeNode.text };
+        }
+        if (calleeNode?.type === 'navigation_expression') {
+          const recv = calleeNode.firstNamedChild;
+          const suffix = calleeNode.lastNamedChild;
+          const methodNode = suffix?.type === 'navigation_suffix' ? suffix.lastNamedChild : suffix;
+          if (recv?.type === 'simple_identifier' && methodNode?.type === 'simple_identifier') {
+            return { kind: 'methodCallResult', lhs, receiver: recv.text, method: methodNode.text };
+          }
+        }
+      }
+    }
+    return undefined;
+  }
+
+  return undefined;
+};
+
+/** Walk up from a node to find an ancestor of a given type. */
+const findAncestorByType = (node: SyntaxNode, type: string): SyntaxNode | undefined => {
+  let current = node.parent;
+  while (current) {
+    if (current.type === type) return current;
+    current = current.parent;
+  }
+  return undefined;
+};
+
+const extractKotlinPatternBinding: PatternBindingExtractor = (node, scopeEnv, declarationTypeNodes, scope) => {
+  // Kotlin when/is smart casts (existing behavior)
+  if (node.type === 'type_test') {
+    const typeNode = node.lastNamedChild;
+    if (!typeNode) return undefined;
+    const typeName = extractSimpleTypeName(typeNode);
+    if (!typeName) return undefined;
+    const whenExpr = findAncestorByType(node, 'when_expression');
+    if (!whenExpr) return undefined;
+    const whenSubject = whenExpr.namedChild(0);
+    const subject = whenSubject?.firstNamedChild ?? whenSubject;
+    if (!subject) return undefined;
+    const varName = extractVarName(subject);
+    if (!varName) return undefined;
+    return { varName, typeName };
+  }
+
+  // Null-check narrowing: if (x != null) { ... }
+  // Kotlin AST: equality_expression > simple_identifier, "!=" [anon], "null" [anon]
+  // Note: `null` is an anonymous node in tree-sitter-kotlin, not `null_literal`.
+  if (node.type === 'equality_expression') {
+    const op = node.children.find(c => !c.isNamed && c.text === '!=');
+    if (!op) return undefined;
+
+    // `null` is anonymous in Kotlin grammar — use positional child scan
+    let varNode: SyntaxNode | undefined;
+    let hasNull = false;
+    for (let i = 0; i < node.childCount; i++) {
+      const c = node.child(i);
+      if (!c) continue;
+      if (c.type === 'simple_identifier') varNode = c;
+      if (!c.isNamed && c.text === 'null') hasNull = true;
+    }
+    if (!varNode || !hasNull) return undefined;
+
+    const varName = varNode.text;
+    const resolvedType = scopeEnv.get(varName);
+    if (!resolvedType) return undefined;
+
+    // Check if the original declaration type was nullable (ends with ?)
+    const declTypeNode = declarationTypeNodes.get(`${scope}\0${varName}`);
+    if (!declTypeNode) return undefined;
+    const declText = declTypeNode.text;
+    if (!declText.includes('?') && !declText.includes('null')) return undefined;
+
+    // Find the if-body: walk up to if_expression, then find control_structure_body
+    const ifExpr = findAncestorByType(node, 'if_expression');
+    if (!ifExpr) return undefined;
+    // The consequence is the first control_structure_body child
+    for (let i = 0; i < ifExpr.childCount; i++) {
+      const child = ifExpr.child(i);
+      if (child?.type === 'control_structure_body') {
+        return {
+          varName,
+          typeName: resolvedType,
+          narrowingRange: { startIndex: child.startIndex, endIndex: child.endIndex },
+        };
+      }
+    }
+    return undefined;
+  }
+
+  return undefined;
+};
+
 export const kotlinTypeConfig: LanguageTypeConfig = {
+  allowPatternBindingOverwrite: true,
   declarationNodeTypes: KOTLIN_DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: KOTLIN_FOR_LOOP_NODE_TYPES,
+  patternBindingNodeTypes: new Set(['type_test', 'equality_expression']),
   extractDeclaration: extractKotlinDeclaration,
   extractParameter: extractKotlinParameter,
   extractInitializer: extractKotlinInitializer,
   scanConstructorBinding: scanKotlinConstructorBinding,
+  extractForLoopBinding: extractKotlinForLoopBinding,
+  extractPendingAssignment: extractKotlinPendingAssignment,
+  extractPatternBinding: extractKotlinPatternBinding,
+  inferLiteralType: inferJvmLiteralType,
+  detectConstructorType: detectKotlinConstructorType,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/php.ts b/gitnexus/src/core/ingestion/type-extractors/php.ts
index f96298e66..ffaebde73 100644
--- a/gitnexus/src/core/ingestion/type-extractors/php.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/php.ts
@@ -1,6 +1,6 @@
 import type { SyntaxNode } from '../utils.js';
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ReturnTypeExtractor } from './types.js';
-import { extractSimpleTypeName, extractVarName, extractCalleeName } from './shared.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ReturnTypeExtractor, PendingAssignmentExtractor, ForLoopExtractor } from './types.js';
+import { extractSimpleTypeName, extractVarName, extractCalleeName, resolveIterableElementType, extractElementTypeFromString } from './shared.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'assignment_expression',   // For constructor inference: $x = new User()
@@ -61,6 +61,15 @@ const normalizePhpType = (raw: string): string | undefined => {
   type = segments[segments.length - 1];
   // Skip uninformative types
   if (type === 'mixed' || type === 'void' || type === 'self' || type === 'static' || type === 'object') return undefined;
+  // Extract element type from generic: Collection<User> → User
+  // PHPDoc generics encode the element type in angle brackets. Since PHP's Strategy B
+  // uses the scopeEnv value directly as the element type, we must store the inner type,
+  // not the container name. This mirrors how User[] → User is handled by the [] strip above.
+  const genericMatch = type.match(/^(\w+)\s*</);
+  if (genericMatch) {
+    const elementType = extractElementTypeFromString(type);
+    return elementType ?? undefined;
+  }
   if (/^\w+$/.test(type)) return type;
   return undefined;
 };
@@ -73,6 +82,67 @@ const SKIP_NODE_TYPES: ReadonlySet<string> = new Set(['attribute_list', 'attribu
 const PHPDOC_PARAM_RE = /@param\s+(\S+)\s+\$(\w+)/g;
 /** Alternate PHPDoc order: `@param $name Type` (name first) */
 const PHPDOC_PARAM_ALT_RE = /@param\s+\$(\w+)\s+(\S+)/g;
+/** Regex to extract PHPDoc @var annotations: `@var Type` */
+const PHPDOC_VAR_RE = /@var\s+(\S+)/;
+
+/**
+ * Extract the element type for a class property from its PHPDoc @var annotation or
+ * PHP 7.4+ native type. Walks backward from the property_declaration node to find
+ * an immediately preceding comment containing @var.
+ *
+ * Returns the normalized element type (e.g. User[] → User, Collection<User> → User).
+ * Returns undefined when no usable type annotation is found.
+ */
+const extractClassPropertyElementType = (propDecl: SyntaxNode): string | undefined => {
+  // Strategy 1: PHPDoc @var annotation on a preceding comment sibling
+  let sibling = propDecl.previousSibling;
+  while (sibling) {
+    if (sibling.type === 'comment') {
+      const match = PHPDOC_VAR_RE.exec(sibling.text);
+      if (match) return normalizePhpType(match[1]);
+    } else if (sibling.isNamed && !SKIP_NODE_TYPES.has(sibling.type)) {
+      break;
+    }
+    sibling = sibling.previousSibling;
+  }
+  // Strategy 2: PHP 7.4+ native type field — skip generic 'array' since element type is unknown
+  const typeNode = propDecl.childForFieldName('type');
+  if (!typeNode) return undefined;
+  const typeName = extractSimpleTypeName(typeNode);
+  if (!typeName || typeName === 'array') return undefined;
+  return typeName;
+};
+
+/**
+ * Scan a class body for a property_declaration matching the given property name,
+ * and extract its element type. The class body is the `declaration_list` child of
+ * a `class_declaration` node.
+ *
+ * Used as Strategy C in extractForLoopBinding for `$this->property` iterables
+ * where Strategy A (resolveIterableElementType) and Strategy B (scopeEnv lookup)
+ * both fail to find the type.
+ */
+const findClassPropertyElementType = (propName: string, classNode: SyntaxNode): string | undefined => {
+  const declList = classNode.childForFieldName('body')
+    ?? (classNode.namedChild(classNode.namedChildCount - 1)?.type === 'declaration_list'
+        ? classNode.namedChild(classNode.namedChildCount - 1)
+        : null); // fallback: last named child, only if it's a declaration_list
+  if (!declList) return undefined;
+  for (let i = 0; i < declList.namedChildCount; i++) {
+    const child = declList.namedChild(i);
+    if (child?.type !== 'property_declaration') continue;
+    // Check if any property_element has a variable_name matching '$propName'
+    for (let j = 0; j < child.namedChildCount; j++) {
+      const elem = child.namedChild(j);
+      if (elem?.type !== 'property_element') continue;
+      const varNameNode = elem.firstNamedChild; // variable_name node
+      if (varNameNode?.text === '$' + propName) {
+        return extractClassPropertyElementType(child);
+      }
+    }
+  }
+  return undefined;
+};
 
 /**
  * Collect PHPDoc @param type bindings from comment nodes preceding a method/function.
@@ -190,8 +260,12 @@ const extractParameter: ParameterExtractor = (node: SyntaxNode, env: Map<string,
 
   if (!nameNode || !typeNode) return;
   const varName = extractVarName(nameNode);
+  if (!varName) return;
+  // Don't overwrite PHPDoc-derived types (e.g. @param User[] $users → User)
+  // with the less-specific AST type annotation (e.g. array).
+  if (env.has(varName)) return;
   const typeName = extractSimpleTypeName(typeNode);
-  if (varName && typeName) env.set(varName, typeName);
+  if (typeName) env.set(varName, typeName);
 };
 
 /** PHP: $x = SomeFactory() or $x = $this->getUser() — bind variable to call return type */
@@ -229,27 +303,251 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
 /** Regex to extract PHPDoc @return annotations: `@return User` */
 const PHPDOC_RETURN_RE = /@return\s+(\S+)/;
 
+/**
+ * Normalize a PHPDoc return type for storage in the SymbolTable.
+ * Unlike normalizePhpType (which strips User[] → User for scopeEnv), this preserves
+ * array notation so lookupRawReturnType can extract element types for for-loop resolution.
+ *   \App\Models\User[] → User[]
+ *   ?User → User
+ *   Collection<User> → Collection<User>  (preserved for extractElementTypeFromString)
+ */
+const normalizePhpReturnType = (raw: string): string | undefined => {
+  // Strip nullable prefix: ?User[] → User[]
+  let type = raw.startsWith('?') ? raw.slice(1) : raw;
+  // Strip union with null/false/void: User[]|null → User[]
+  const parts = type.split('|').filter(p => p !== 'null' && p !== 'false' && p !== 'void' && p !== 'mixed');
+  if (parts.length !== 1) return undefined;
+  type = parts[0];
+  // Strip namespace: \App\Models\User[] → User[]
+  const segments = type.split('\\');
+  type = segments[segments.length - 1];
+  // Skip uninformative types
+  if (type === 'mixed' || type === 'void' || type === 'self' || type === 'static' || type === 'object' || type === 'array') return undefined;
+  if (/^\w+(\[\])?$/.test(type) || /^\w+\s*</.test(type)) return type;
+  return undefined;
+};
+
 /**
  * Extract return type from PHPDoc `@return Type` annotation preceding a method.
  * Walks backwards through preceding siblings looking for comment nodes.
+ * Preserves array notation (e.g., User[]) for for-loop element type extraction.
  */
 const extractReturnType: ReturnTypeExtractor = (node) => {
   let sibling = node.previousSibling;
   while (sibling) {
     if (sibling.type === 'comment') {
       const match = PHPDOC_RETURN_RE.exec(sibling.text);
-      if (match) return normalizePhpType(match[1]);
+      if (match) return normalizePhpReturnType(match[1]);
     } else if (sibling.isNamed && !SKIP_NODE_TYPES.has(sibling.type)) break;
     sibling = sibling.previousSibling;
   }
   return undefined;
 };
 
+/** PHP: $alias = $user → assignment_expression with variable_name left/right.
+ *  PHP TypeEnv stores variables WITH $ prefix ($user → User), so we keep $ in lhs/rhs. */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type !== 'assignment_expression') return undefined;
+  const left = node.childForFieldName('left');
+  const right = node.childForFieldName('right');
+  if (!left || !right) return undefined;
+  if (left.type !== 'variable_name') return undefined;
+  const lhs = left.text;
+  if (!lhs || scopeEnv.has(lhs)) return undefined;
+  if (right.type === 'variable_name') {
+    const rhs = right.text;
+    if (rhs) return { kind: 'copy', lhs, rhs };
+  }
+  // member_access_expression RHS → fieldAccess ($a->field)
+  if (right.type === 'member_access_expression') {
+    const obj = right.childForFieldName('object');
+    const name = right.childForFieldName('name');
+    if (obj?.type === 'variable_name' && name) {
+      return { kind: 'fieldAccess', lhs, receiver: obj.text, field: name.text };
+    }
+  }
+  // function_call_expression RHS → callResult (bare function calls only)
+  if (right.type === 'function_call_expression') {
+    const funcNode = right.childForFieldName('function');
+    if (funcNode?.type === 'name') {
+      return { kind: 'callResult', lhs, callee: funcNode.text };
+    }
+  }
+  // member_call_expression RHS → methodCallResult ($a->method())
+  if (right.type === 'member_call_expression') {
+    const obj = right.childForFieldName('object');
+    const name = right.childForFieldName('name');
+    if (obj?.type === 'variable_name' && name) {
+      return { kind: 'methodCallResult', lhs, receiver: obj.text, method: name.text };
+    }
+  }
+  return undefined;
+};
+
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'foreach_statement',
+]);
+
+/** Extract element type from a PHP type annotation AST node.
+ *  PHP has limited AST-level container types — `array` is a primitive_type with no generic args.
+ *  Named types (e.g., `Collection`) are returned as-is (container descriptor lookup handles them). */
+const extractPhpElementTypeFromTypeNode = (_typeNode: SyntaxNode): string | undefined => {
+  // PHP AST type nodes don't carry generic parameters (array<User> is PHPDoc-only).
+  // primitive_type 'array' and named_type 'Collection' don't encode element types.
+  return undefined;
+};
+
+/** Walk up from a foreach to the enclosing function and search parameter type annotations.
+ *  PHP parameter type hints are limited (array, ClassName) — this extracts element type when possible. */
+const findPhpParamElementType = (iterableName: string, startNode: SyntaxNode): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'method_declaration' || current.type === 'function_definition') {
+      const paramsNode = current.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param || param.type !== 'simple_parameter') continue;
+          const nameNode = param.childForFieldName('name');
+          if (nameNode?.text !== iterableName) continue;
+          const typeNode = param.childForFieldName('type');
+          if (typeNode) return extractPhpElementTypeFromTypeNode(typeNode);
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/**
+ * PHP: foreach ($users as $user) — extract loop variable binding.
+ *
+ * AST structure (from tree-sitter-php grammar):
+ *   foreach_statement — no named fields for iterable/value (only 'body')
+ *     children[0]: expression (iterable, e.g. $users)
+ *     children[1]: expression (simple value) OR pair ($key => $value)
+ *       pair children: expression (key), expression (value)
+ *
+ * PHP's PHPDoc @param normalizes `User[]` → `User` in the env, so the iterable's
+ * stored type IS the element type. We first try resolveIterableElementType (for
+ * constructor-binding cases that retain container types), then fall back to direct
+ * scopeEnv lookup (for PHPDoc-normalized types).
+ */
+const extractForLoopBinding: ForLoopExtractor = (node,  { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  if (node.type !== 'foreach_statement') return;
+
+  // Collect non-body named children: first is the iterable, second is value or pair
+  const children: SyntaxNode[] = [];
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (child && child !== node.childForFieldName('body')) {
+      children.push(child);
+    }
+  }
+  if (children.length < 2) return;
+
+  const iterableNode = children[0];
+  const valueOrPair = children[1];
+
+  // Determine the loop variable node
+  let loopVarNode: SyntaxNode;
+  if (valueOrPair.type === 'pair') {
+    // $key => $value — the value is the last named child of the pair
+    const lastChild = valueOrPair.namedChild(valueOrPair.namedChildCount - 1);
+    if (!lastChild) return;
+    // Handle by_ref: foreach ($arr as $k => &$v)
+    loopVarNode = lastChild.type === 'by_ref' ? (lastChild.firstNamedChild ?? lastChild) : lastChild;
+  } else {
+    // Simple: foreach ($users as $user) or foreach ($users as &$user)
+    loopVarNode = valueOrPair.type === 'by_ref' ? (valueOrPair.firstNamedChild ?? valueOrPair) : valueOrPair;
+  }
+
+  const varName = extractVarName(loopVarNode);
+  if (!varName) return;
+
+  // Get iterable variable name (PHP vars include $ prefix)
+  let iterableName: string | undefined;
+  let callExprElementType: string | undefined;
+  if (iterableNode.type === 'variable_name') {
+    iterableName = iterableNode.text;
+  } else if (iterableNode?.type === 'member_access_expression') {
+    const name = iterableNode.childForFieldName('name');
+    // PHP properties are stored in scopeEnv with $ prefix ($users), but
+    // member_access_expression.name returns without $ (users). Add $ to match.
+    if (name) iterableName = '$' + name.text;
+  } else if (iterableNode?.type === 'function_call_expression') {
+    // foreach (getUsers() as $user) — resolve via return type lookup
+    const calleeName = extractCalleeName(iterableNode);
+    if (calleeName) {
+      const rawReturn = returnTypeLookup.lookupRawReturnType(calleeName);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  } else if (iterableNode?.type === 'member_call_expression') {
+    // foreach ($this->getUsers() as $user) — resolve via return type lookup
+    const methodName = iterableNode.childForFieldName('name');
+    if (methodName) {
+      const rawReturn = returnTypeLookup.lookupRawReturnType(methodName.text);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  // If we resolved the element type from a call expression, bind and return early
+  if (callExprElementType) {
+    scopeEnv.set(varName, callExprElementType);
+    return;
+  }
+
+  // Strategy A: try resolveIterableElementType (handles constructor-binding container types)
+  const elementType = resolveIterableElementType(
+    iterableName, node, scopeEnv, declarationTypeNodes, scope,
+    extractPhpElementTypeFromTypeNode, findPhpParamElementType,
+    undefined,
+  );
+  if (elementType) {
+    scopeEnv.set(varName, elementType);
+    return;
+  }
+
+  // Strategy B: direct scopeEnv lookup — PHP normalizePhpType strips User[] → User,
+  // so the iterable's stored type is already the element type from PHPDoc annotations.
+  const iterableType = scopeEnv.get(iterableName);
+  if (iterableType) {
+    scopeEnv.set(varName, iterableType);
+    return;
+  }
+
+  // Strategy C: $this->property — scan the enclosing class body for the property
+  // declaration and extract its element type from @var PHPDoc or native type.
+  // This handles the common PHP pattern where the property type is declared on the
+  // class body (/** @var User[] */ private $users) but the foreach is in a method
+  // whose scopeEnv does not contain the property type.
+  if (iterableNode?.type === 'member_access_expression') {
+    const obj = iterableNode.childForFieldName('object');
+    if (obj?.text === '$this') {
+      const nameNode = iterableNode.childForFieldName('name');
+      const propName = nameNode?.text;
+      if (propName) {
+        const classNode = findEnclosingClass(iterableNode);
+        if (classNode) {
+          const elementType = findClassPropertyElementType(propName, classNode);
+          if (elementType) scopeEnv.set(varName, elementType);
+        }
+      }
+    }
+  }
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
   extractDeclaration,
   extractParameter,
   extractInitializer,
   scanConstructorBinding,
   extractReturnType,
+  extractForLoopBinding,
+  extractPendingAssignment,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/python.ts b/gitnexus/src/core/ingestion/type-extractors/python.ts
index e44c3f715..0b075dfc4 100644
--- a/gitnexus/src/core/ingestion/type-extractors/python.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/python.ts
@@ -1,21 +1,53 @@
 import type { SyntaxNode } from '../utils.js';
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner } from './types.js';
-import { extractSimpleTypeName, extractVarName } from './shared.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, PendingAssignmentExtractor, PatternBindingExtractor, ForLoopExtractor } from './types.js';
+import { extractSimpleTypeName, extractVarName, extractElementTypeFromString, extractGenericTypeArgs, resolveIterableElementType, methodToTypeArgPosition, type TypeArgPosition } from './shared.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'assignment',
   'named_expression',
+  'expression_statement',
 ]);
 
-/** Python: x: Foo = ... (PEP 484 annotations) */
+/** Python: x: Foo = ... (PEP 484 annotated assignment) or x: Foo (standalone annotation).
+ *
+ * tree-sitter-python grammar produces two distinct shapes:
+ *
+ *   1. Annotated assignment with value:  `name: str = ""`
+ *      Node type: `assignment`
+ *      Fields: left=identifier, type=identifier/type, right=value
+ *
+ *   2. Standalone annotation (no value):  `name: str`
+ *      Node type: `expression_statement`
+ *      Child: `type` node with fields name=identifier, type=identifier/type
+ *
+ * Both appear at file scope and inside class bodies (PEP 526 class variable annotations).
+ */
 const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<string, string>): void => {
-  // Python annotated assignment: left : type = value
-  // tree-sitter represents this differently based on grammar version
+  if (node.type === 'expression_statement') {
+    // Standalone annotation: expression_statement > type { name: identifier, type: identifier }
+    const typeChild = node.firstNamedChild;
+    if (!typeChild || typeChild.type !== 'type') return;
+    const nameNode = typeChild.childForFieldName('name');
+    const typeNode = typeChild.childForFieldName('type');
+    if (!nameNode || !typeNode) return;
+    const varName = extractVarName(nameNode);
+    const inner = typeNode.type === 'type' ? (typeNode.firstNamedChild ?? typeNode) : typeNode;
+    const typeName = extractSimpleTypeName(inner) ?? inner.text;
+    if (varName && typeName) env.set(varName, typeName);
+    return;
+  }
+
+  // Annotated assignment: left : type = value
   const left = node.childForFieldName('left');
   const typeNode = node.childForFieldName('type');
   if (!left || !typeNode) return;
   const varName = extractVarName(left);
-  const typeName = extractSimpleTypeName(typeNode);
+  // extractSimpleTypeName handles identifiers and qualified names.
+  // Python 3.10+ union syntax `User | None` is parsed as binary_operator,
+  // which extractSimpleTypeName doesn't handle. Fall back to raw text so
+  // stripNullable can process it at lookup time (e.g., "User | None" → "User").
+  const inner = typeNode.type === 'type' ? (typeNode.firstNamedChild ?? typeNode) : typeNode;
+  const typeName = extractSimpleTypeName(inner) ?? inner.text;
   if (varName && typeName) env.set(varName, typeName);
 };
 
@@ -30,6 +62,10 @@ const extractParameter: ParameterExtractor = (node: SyntaxNode, env: Map<string,
   } else {
     nameNode = node.childForFieldName('name') ?? node.childForFieldName('pattern');
     typeNode = node.childForFieldName('type');
+    // Python typed_parameter: name is a positional child (identifier), not a named field
+    if (!nameNode && node.type === 'typed_parameter') {
+      nameNode = node.firstNamedChild?.type === 'identifier' ? node.firstNamedChild : null;
+    }
   }
 
   if (!nameNode || !typeNode) return;
@@ -102,10 +138,323 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName: left.text, calleeName };
 };
 
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'for_statement',
+]);
+
+/** Python function/method node types that carry a parameters list. */
+const PY_FUNCTION_NODE_TYPES = new Set([
+  'function_definition', 'decorated_definition',
+]);
+
+/**
+ * Extract element type from a Python type annotation AST node.
+ * Handles:
+ *   subscript "List[User]"  →  extractElementTypeFromString("List[User]") → "User"
+ *   generic_type            →  extractGenericTypeArgs → first arg
+ * Falls back to text-based extraction.
+ */
+const extractPyElementTypeFromAnnotation = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  // Unwrap 'type' wrapper node to get to the actual type (e.g., type > generic_type)
+  const inner = typeNode.type === 'type' ? (typeNode.firstNamedChild ?? typeNode) : typeNode;
+
+  // Python subscript: List[User], Sequence[User] — use raw text
+  if (inner.type === 'subscript') {
+    return extractElementTypeFromString(inner.text, pos);
+  }
+  // generic_type: dict[str, User] — tree-sitter-python uses type_parameter child
+  if (inner.type === 'generic_type') {
+    // Try standard extractGenericTypeArgs first (handles type_arguments)
+    const args = extractGenericTypeArgs(inner);
+    if (args.length >= 1) return pos === 'first' ? args[0] : args[args.length - 1];
+    // Fallback: look for type_parameter child (tree-sitter-python specific)
+    for (let i = 0; i < inner.namedChildCount; i++) {
+      const child = inner.namedChild(i);
+      if (child?.type === 'type_parameter') {
+        if (pos === 'first') {
+          const firstArg = child.firstNamedChild;
+          if (firstArg) return extractSimpleTypeName(firstArg);
+        } else {
+          const lastArg = child.lastNamedChild;
+          if (lastArg) return extractSimpleTypeName(lastArg);
+        }
+      }
+    }
+  }
+  // Fallback: raw text extraction (handles User[], [User], etc.)
+  return extractElementTypeFromString(inner.text, pos);
+};
+
+/**
+ * Walk up the AST from a for-statement to find the enclosing function definition,
+ * then search its parameters for one named `iterableName`.
+ * Returns the element type extracted from its type annotation, or undefined.
+ *
+ * Handles both `parameter` and `typed_parameter` node types in tree-sitter-python.
+ * `typed_parameter` may not expose the name as a `name` field — falls back to
+ * checking the first identifier-type named child.
+ */
+const findPyParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'function_definition') {
+      const paramsNode = current.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param) continue;
+          // Try named `name` field first (parameter node), then first identifier child
+          // (typed_parameter node may store name as first positional child)
+          const nameNode = param.childForFieldName('name')
+            ?? (param.firstNamedChild?.type === 'identifier' ? param.firstNamedChild : null);
+          if (nameNode?.text !== iterableName) continue;
+          // Try `type` field, then last named child (typed_parameter stores type last)
+          const typeAnnotation = param.childForFieldName('type')
+            ?? (param.namedChildCount >= 2 ? param.namedChild(param.namedChildCount - 1) : null);
+          if (typeAnnotation && typeAnnotation !== nameNode) {
+            return extractPyElementTypeFromAnnotation(typeAnnotation, pos);
+          }
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/**
+ * Extracts iterableName and methodName from a call expression like `data.items()`.
+ * Returns undefined if the call doesn't match the expected pattern.
+ */
+const extractMethodCall = (callNode: SyntaxNode): { iterableName: string; methodName?: string } | undefined => {
+  const fn = callNode.childForFieldName('function');
+  if (fn?.type !== 'attribute') return undefined;
+  const obj = fn.firstNamedChild;
+  if (obj?.type !== 'identifier') return undefined;
+  const method = fn.lastNamedChild;
+  const methodName = (method?.type === 'identifier' && method !== obj) ? method.text : undefined;
+  return { iterableName: obj.text, methodName };
+};
+
+/**
+ * Collects all identifier nodes from a pattern, descending into nested tuple_patterns.
+ * For `i, (k, v)` returns [i, k, v]. For `key, value` returns [key, value].
+ */
+const collectPatternIdentifiers = (pattern: SyntaxNode): SyntaxNode[] => {
+  const vars: SyntaxNode[] = [];
+  for (let i = 0; i < pattern.namedChildCount; i++) {
+    const child = pattern.namedChild(i);
+    if (child?.type === 'identifier') {
+      vars.push(child);
+    } else if (child?.type === 'tuple_pattern') {
+      vars.push(...collectPatternIdentifiers(child));
+    }
+  }
+  return vars;
+};
+
+/**
+ * Python: for user in users: where users has a known container type annotation.
+ *
+ * AST node: `for_statement` with `left` (loop variable) and `right` (iterable).
+ *
+ * Tier 1c: resolves the element type via three strategies in priority order:
+ *   1. declarationTypeNodes — raw type annotation AST node (covers stored container types)
+ *   2. scopeEnv string — extractElementTypeFromString on the stored type
+ *   3. AST walk — walks up to the enclosing function's parameters to read List[User] directly
+ *
+ * Also handles `enumerate(iterable)` — unwraps the outer call and skips the integer
+ * index variable so the value variable still resolves to the element type.
+ */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  if (node.type !== 'for_statement') return;
+
+  const rightNode = node.childForFieldName('right');
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  let callExprElementType: string | undefined;
+  let isEnumerate = false;
+
+  // Extract iterable info from the `right` field — may be identifier, attribute, or call.
+  if (rightNode?.type === 'identifier') {
+    iterableName = rightNode.text;
+  } else if (rightNode?.type === 'attribute') {
+    const prop = rightNode.lastNamedChild;
+    if (prop) iterableName = prop.text;
+  } else if (rightNode?.type === 'call') {
+    const fn = rightNode.childForFieldName('function');
+    if (fn?.type === 'identifier' && fn.text === 'enumerate') {
+      // enumerate(iterable) or enumerate(d.items()) — unwrap to inner iterable.
+      isEnumerate = true;
+      const innerArg = rightNode.childForFieldName('arguments')?.firstNamedChild;
+      if (innerArg?.type === 'identifier') {
+        iterableName = innerArg.text;
+      } else if (innerArg?.type === 'call') {
+        const extracted = extractMethodCall(innerArg);
+        if (extracted) ({ iterableName, methodName } = extracted);
+      }
+    } else if (fn?.type === 'attribute') {
+      // data.items() → call > function: attribute > identifier('data') + identifier('items')
+      const extracted = extractMethodCall(rightNode);
+      if (extracted) ({ iterableName, methodName } = extracted);
+    } else if (fn?.type === 'identifier') {
+      // Direct function call: for user in get_users() (Phase 7.3 — return-type path)
+      const rawReturn = returnTypeLookup.lookupRawReturnType(fn.text);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    const containerTypeName = scopeEnv.get(iterableName!);
+    const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractPyElementTypeFromAnnotation, findPyParamElementType,
+      typeArgPos,
+    );
+  }
+  if (!elementType) return;
+
+  // The loop variable is the `left` field — identifier or pattern_list.
+  const leftNode = node.childForFieldName('left');
+  if (!leftNode) return;
+
+  if (leftNode.type === 'pattern_list' || leftNode.type === 'tuple_pattern') {
+    // Tuple unpacking: `key, value` or `i, (k, v)` or `(k, v)` — bind the last identifier to element type.
+    // With enumerate, skip binding if there's only one var (just the index, no value to bind).
+    const vars = collectPatternIdentifiers(leftNode);
+    if (vars.length > 0 && (!isEnumerate || vars.length > 1)) {
+      scopeEnv.set(vars[vars.length - 1].text, elementType);
+    }
+    return;
+  }
+
+  const loopVarName = extractVarName(leftNode);
+  if (loopVarName) scopeEnv.set(loopVarName, elementType);
+};
+
+/** Python: alias = u → assignment with left/right fields.
+ *  Also handles walrus operator: alias := u → named_expression with name/value fields. */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  let left: SyntaxNode | null;
+  let right: SyntaxNode | null;
+
+  if (node.type === 'assignment') {
+    left = node.childForFieldName('left');
+    right = node.childForFieldName('right');
+  } else if (node.type === 'named_expression') {
+    left = node.childForFieldName('name');
+    right = node.childForFieldName('value');
+  } else {
+    return undefined;
+  }
+
+  if (!left || !right) return undefined;
+  const lhs = left.type === 'identifier' ? left.text : undefined;
+  if (!lhs || scopeEnv.has(lhs)) return undefined;
+  if (right.type === 'identifier') return { kind: 'copy', lhs, rhs: right.text };
+  // attribute RHS → fieldAccess (a.field)
+  if (right.type === 'attribute') {
+    const obj = right.firstNamedChild;
+    const field = right.lastNamedChild;
+    if (obj?.type === 'identifier' && field?.type === 'identifier' && obj !== field) {
+      return { kind: 'fieldAccess', lhs, receiver: obj.text, field: field.text };
+    }
+  }
+  // call RHS
+  if (right.type === 'call') {
+    const funcNode = right.childForFieldName('function');
+    if (funcNode?.type === 'identifier') {
+      return { kind: 'callResult', lhs, callee: funcNode.text };
+    }
+    // method call with receiver: call → function: attribute
+    if (funcNode?.type === 'attribute') {
+      const obj = funcNode.firstNamedChild;
+      const method = funcNode.lastNamedChild;
+      if (obj?.type === 'identifier' && method?.type === 'identifier' && obj !== method) {
+        return { kind: 'methodCallResult', lhs, receiver: obj.text, method: method.text };
+      }
+    }
+  }
+  return undefined;
+};
+
+/**
+ * Python match/case `as` pattern binding: `case User() as u:`
+ *
+ * AST structure (tree-sitter-python):
+ *   as_pattern
+ *     alias: as_pattern_target   ← the bound variable name (e.g. "u")
+ *     children[0]: case_pattern  ← wraps class_pattern (or is class_pattern directly)
+ *       class_pattern
+ *         dotted_name            ← the class name (e.g. "User")
+ *
+ * The `alias` field is an `as_pattern_target` node whose `.text` is the identifier.
+ * The class name lives in the first non-alias named child: either a `case_pattern`
+ * wrapping a `class_pattern`, or a direct `class_pattern`.
+ *
+ * Conservative: returns undefined when:
+ * - The node is not an `as_pattern`
+ * - The pattern side is not a class_pattern (e.g. guard or literal match)
+ * - The variable was already bound in scopeEnv
+ */
+const extractPatternBinding: PatternBindingExtractor = (node, scopeEnv) => {
+  if (node.type !== 'as_pattern') return undefined;
+
+  // as_pattern: `case User() as u:` — binds matched value to a name.
+  // Try named field first (future grammar versions may expose it), fall back to positional.
+  if (node.namedChildCount < 2) return undefined;
+
+  const patternChild = node.namedChild(0);
+  const varNameNode = node.childForFieldName('alias')
+    ?? node.namedChild(node.namedChildCount - 1);
+  if (!patternChild || !varNameNode) return undefined;
+  if (varNameNode.type !== 'identifier') return undefined;
+
+  const varName = varNameNode.text;
+  if (!varName || scopeEnv.has(varName)) return undefined;
+
+  // Find the class_pattern — may be direct or wrapped in case_pattern.
+  let classPattern: SyntaxNode | null = null;
+  if (patternChild.type === 'class_pattern') {
+    classPattern = patternChild;
+  } else if (patternChild.type === 'case_pattern') {
+    // Unwrap one level: case_pattern wraps class_pattern
+    for (let j = 0; j < patternChild.namedChildCount; j++) {
+      const inner = patternChild.namedChild(j);
+      if (inner?.type === 'class_pattern') {
+        classPattern = inner;
+        break;
+      }
+    }
+  }
+  if (!classPattern) return undefined;
+
+  // class_pattern children: dotted_name (the class name) + optional keyword_pattern args.
+  const classNameNode = classPattern.firstNamedChild;
+  if (!classNameNode || (classNameNode.type !== 'dotted_name' && classNameNode.type !== 'identifier')) return undefined;
+  const typeName = classNameNode.text;
+  if (!typeName) return undefined;
+
+  return { varName, typeName };
+};
+
+const PATTERN_BINDING_NODE_TYPES: ReadonlySet<string> = new Set(['as_pattern']);
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
+  patternBindingNodeTypes: PATTERN_BINDING_NODE_TYPES,
   extractDeclaration,
   extractParameter,
   extractInitializer,
   scanConstructorBinding,
+  extractForLoopBinding,
+  extractPendingAssignment,
+  extractPatternBinding,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/ruby.ts b/gitnexus/src/core/ingestion/type-extractors/ruby.ts
index e2c890760..5a1f29f26 100644
--- a/gitnexus/src/core/ingestion/type-extractors/ruby.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/ruby.ts
@@ -1,6 +1,6 @@
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ReturnTypeExtractor } from './types.js';
-import { extractRubyConstructorAssignment, extractSimpleTypeName } from './shared.js';
-import { SyntaxNode } from '../utils.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ReturnTypeExtractor, PendingAssignmentExtractor, ForLoopExtractor } from './types.js';
+import { extractRubyConstructorAssignment, extractSimpleTypeName, extractElementTypeFromString, extractVarName, resolveIterableElementType } from './shared.js';
+import type { SyntaxNode } from '../utils.js';
 
 /**
  * Ruby type extractor — YARD annotation parsing.
@@ -261,11 +261,160 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName: left.text, calleeName };
 };
 
+/** Ruby method node types that carry a parameter list. */
+const RUBY_METHOD_NODE_TYPES = new Set(['method', 'singleton_method']);
+
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set(['for']);
+
+/**
+ * Collect raw YARD @param type strings from comment nodes preceding a method.
+ * Unlike collectYardParams which returns simplified type names, this returns the
+ * raw bracket content (e.g., "Array<User>" not "Array") for element type extraction.
+ */
+const collectYardRawParams = (methodNode: SyntaxNode): Map<string, string> => {
+  const params = new Map<string, string>();
+  const commentTexts: string[] = [];
+
+  const collectComments = (startNode: SyntaxNode): void => {
+    let sibling = startNode.previousSibling;
+    while (sibling) {
+      if (sibling.type === 'comment') {
+        commentTexts.unshift(sibling.text);
+      } else if (sibling.isNamed) {
+        break;
+      }
+      sibling = sibling.previousSibling;
+    }
+  };
+
+  collectComments(methodNode);
+  if (commentTexts.length === 0 && methodNode.parent?.type === 'body_statement') {
+    collectComments(methodNode.parent);
+  }
+
+  const commentBlock = commentTexts.join('\n');
+  let match: RegExpExecArray | null;
+
+  YARD_PARAM_RE.lastIndex = 0;
+  while ((match = YARD_PARAM_RE.exec(commentBlock)) !== null) {
+    params.set(match[1], match[2]);
+  }
+  YARD_PARAM_ALT_RE.lastIndex = 0;
+  while ((match = YARD_PARAM_ALT_RE.exec(commentBlock)) !== null) {
+    if (!params.has(match[2])) params.set(match[2], match[1]);
+  }
+
+  return params;
+};
+
+/**
+ * Walk up the AST from a for-statement to find the enclosing method,
+ * then search its YARD @param annotations for one named `iterableName`.
+ * Returns the element type extracted from the raw YARD type string.
+ *
+ * Example: `@param users [Array<User>]` → extracts "User" from "Array<User>".
+ */
+const findRubyParamElementType = (iterableName: string, startNode: SyntaxNode): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (RUBY_METHOD_NODE_TYPES.has(current.type)) {
+      const rawParams = collectYardRawParams(current);
+      const rawType = rawParams.get(iterableName);
+      if (rawType) return extractElementTypeFromString(rawType);
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/**
+ * Ruby: for user in users ... end
+ *
+ * tree-sitter-ruby `for` node structure:
+ *   pattern field: the loop variable (identifier)
+ *   value field: `in` node whose child is the iterable expression
+ *
+ * Tier 1c: resolves the element type via:
+ *   1. scopeEnv string — extractElementTypeFromString on the stored type
+ *   2. AST walk — walks up to the enclosing method's YARD @param to read Array<User> directly
+ *
+ * Ruby has no static types on loop variables, so this mainly works when the
+ * iterable has a YARD-annotated container type (e.g., `@param users [Array<User>]`).
+ */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope }): void => {
+  if (node.type !== 'for') return;
+
+  // The loop variable is the `pattern` field (identifier).
+  const patternNode = node.childForFieldName('pattern');
+  if (!patternNode) return;
+  const loopVarName = extractVarName(patternNode);
+  if (!loopVarName) return;
+
+  // The iterable is inside the `value` field which is an `in` node wrapping the expression.
+  const inNode = node.childForFieldName('value');
+  if (!inNode) return;
+  const iterableNode = inNode.firstNamedChild;
+  let iterableName: string | undefined;
+  if (iterableNode?.type === 'identifier') {
+    iterableName = iterableNode.text;
+  } else if (iterableNode?.type === 'call') {
+    const method = iterableNode.childForFieldName('method');
+    if (method) iterableName = method.text;
+  }
+  if (!iterableName) return;
+
+  // Ruby has no extractFromTypeNode (no AST type annotations), pass a no-op.
+  const noopExtractFromTypeNode = (): string | undefined => undefined;
+
+  const elementType = resolveIterableElementType(
+    iterableName, node, scopeEnv, declarationTypeNodes, scope,
+    noopExtractFromTypeNode, findRubyParamElementType,
+    undefined,
+  );
+  if (!elementType) return;
+
+  scopeEnv.set(loopVarName, elementType);
+};
+
+/**
+ * Ruby: alias_user = user → assignment with left/right identifier fields.
+ * Only handles plain identifier RHS (not calls, not literals).
+ * Skips if LHS already has a resolved type in scopeEnv.
+ */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type !== 'assignment') return undefined;
+  const lhsNode = node.childForFieldName('left');
+  if (!lhsNode || lhsNode.type !== 'identifier') return undefined;
+  const varName = lhsNode.text;
+  if (scopeEnv.has(varName)) return undefined;
+  const rhsNode = node.childForFieldName('right');
+  if (!rhsNode) return undefined;
+  if (rhsNode.type === 'identifier') return { kind: 'copy', lhs: varName, rhs: rhsNode.text };
+  // call/method_call RHS — Ruby uses method calls for both field access and method calls
+  if (rhsNode.type === 'call' || rhsNode.type === 'method_call') {
+    const methodNode = rhsNode.childForFieldName('method');
+    const receiverNode = rhsNode.childForFieldName('receiver');
+    if (!receiverNode && methodNode?.type === 'identifier') {
+      // No receiver → callResult (bare function call)
+      return { kind: 'callResult', lhs: varName, callee: methodNode.text };
+    }
+    if (receiverNode?.type === 'identifier' && methodNode?.type === 'identifier') {
+      // With receiver → methodCallResult (a.method)
+      return { kind: 'methodCallResult', lhs: varName, receiver: receiverNode.text, method: methodNode.text };
+    }
+  }
+  return undefined;
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
   extractDeclaration,
   extractParameter,
   extractInitializer,
   scanConstructorBinding,
   extractReturnType,
+  extractForLoopBinding,
+  extractPendingAssignment,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/rust.ts b/gitnexus/src/core/ingestion/type-extractors/rust.ts
index 746c7ea30..6bdcb4bad 100644
--- a/gitnexus/src/core/ingestion/type-extractors/rust.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/rust.ts
@@ -1,6 +1,6 @@
 import type { SyntaxNode } from '../utils.js';
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner } from './types.js';
-import { extractSimpleTypeName, extractVarName, hasTypeAnnotation, unwrapAwait } from './shared.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, PendingAssignmentExtractor, PendingAssignment, PatternBindingExtractor, ForLoopExtractor } from './types.js';
+import { extractSimpleTypeName, extractVarName, hasTypeAnnotation, unwrapAwait, extractGenericTypeArgs, resolveIterableElementType, methodToTypeArgPosition, extractElementTypeFromString, type TypeArgPosition } from './shared.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'let_declaration',
@@ -35,7 +35,8 @@ const extractStructPatternType = (structPattern: SyntaxNode): string | undefined
  * Recursively scan a pattern tree for captured_pattern nodes (x @ StructType { .. })
  * and extract variable → type bindings from them.
  */
-const extractCapturedPatternBindings = (pattern: SyntaxNode, env: Map<string, string>): void => {
+const extractCapturedPatternBindings = (pattern: SyntaxNode, env: Map<string, string>, depth = 0): void => {
+  if (depth > 50) return;
   if (pattern.type === 'captured_pattern') {
     // captured_pattern: identifier @ inner_pattern
     // The first named child is the identifier, followed by the inner pattern.
@@ -57,7 +58,7 @@ const extractCapturedPatternBindings = (pattern: SyntaxNode, env: Map<string, st
   if (pattern.type === 'tuple_struct_pattern') {
     for (let i = 0; i < pattern.namedChildCount; i++) {
       const child = pattern.namedChild(i);
-      if (child) extractCapturedPatternBindings(child, env);
+      if (child) extractCapturedPatternBindings(child, env, depth + 1);
     }
   }
 };
@@ -94,7 +95,7 @@ const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<str
 };
 
 /** Rust: let x = User::new(), let x = User::default(), or let x = User { ... } */
-const extractInitializer: InitializerExtractor = (node: SyntaxNode, env: Map<string, string>, _classNames: ClassNameLookup): void => {
+const extractInitializer: InitializerExtractor = (node: SyntaxNode, env: Map<string, string>, classNames: ClassNameLookup): void => {
   // Skip if there's an explicit type annotation — Tier 0 already handled it
   if (node.childForFieldName('type') !== null) return;
   const pattern = node.childForFieldName('pattern');
@@ -115,6 +116,13 @@ const extractInitializer: InitializerExtractor = (node: SyntaxNode, env: Map<str
     return;
   }
 
+  // Unit struct instantiation: let svc = UserService; (bare identifier, no braces or call)
+  if (value.type === 'identifier' && classNames.has(value.text)) {
+    const varName = extractVarName(pattern);
+    if (varName) env.set(varName, value.text);
+    return;
+  }
+
   if (value.type !== 'call_expression') return;
   const func = value.childForFieldName('function');
   if (!func || func.type !== 'scoped_identifier') return;
@@ -181,10 +189,299 @@ const scanConstructorBinding: ConstructorBindingScanner = (node) => {
   return { varName: patternNode.text, calleeName };
 };
 
+/** Rust: let alias = u; → let_declaration with pattern + value fields.
+ *  Also handles struct destructuring: `let Point { x, y } = p` → N fieldAccess items. */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  if (node.type !== 'let_declaration') return undefined;
+  const pattern = node.childForFieldName('pattern');
+  const value = node.childForFieldName('value');
+  if (!pattern || !value) return undefined;
+
+  // Struct pattern destructuring: `let Point { x, y } = receiver`
+  // struct_pattern has a type child (struct name) and field_pattern children
+  if (pattern.type === 'struct_pattern' && value.type === 'identifier') {
+    const receiver = value.text;
+    const items: PendingAssignment[] = [];
+    for (let j = 0; j < pattern.namedChildCount; j++) {
+      const field = pattern.namedChild(j);
+      if (!field) continue;
+      if (field.type === 'field_pattern') {
+        // `Point { x: local_x }` → field_pattern with name + pattern children
+        const nameNode = field.childForFieldName('name');
+        const patNode = field.childForFieldName('pattern');
+        if (nameNode && patNode) {
+          const fieldName = nameNode.text;
+          const varName = extractVarName(patNode);
+          if (varName && !scopeEnv.has(varName)) {
+            items.push({ kind: 'fieldAccess', lhs: varName, receiver, field: fieldName });
+          }
+        } else if (nameNode) {
+          // Shorthand: `Point { x }` → field_pattern with only name (varName = fieldName)
+          const varName = nameNode.text;
+          if (!scopeEnv.has(varName)) {
+            items.push({ kind: 'fieldAccess', lhs: varName, receiver, field: varName });
+          }
+        }
+      }
+    }
+    if (items.length > 0) return items;
+    return undefined;
+  }
+
+  const lhs = extractVarName(pattern);
+  if (!lhs || scopeEnv.has(lhs)) return undefined;
+  // Unwrap Rust .await: `let user = get_user().await` → call_expression
+  const unwrapped = unwrapAwait(value) ?? value;
+  if (unwrapped.type === 'identifier') return { kind: 'copy', lhs, rhs: unwrapped.text };
+  // field_expression RHS → fieldAccess (a.field)
+  if (unwrapped.type === 'field_expression') {
+    const obj = unwrapped.firstNamedChild;
+    const field = unwrapped.lastNamedChild;
+    if (obj?.type === 'identifier' && field?.type === 'field_identifier') {
+      return { kind: 'fieldAccess', lhs, receiver: obj.text, field: field.text };
+    }
+  }
+  // call_expression RHS → callResult (simple calls only)
+  if (unwrapped.type === 'call_expression') {
+    const funcNode = unwrapped.childForFieldName('function');
+    if (funcNode?.type === 'identifier') {
+      return { kind: 'callResult', lhs, callee: funcNode.text };
+    }
+  }
+  // method_call_expression RHS → methodCallResult (receiver.method())
+  if (unwrapped.type === 'method_call_expression') {
+    const obj = unwrapped.firstNamedChild;
+    if (obj?.type === 'identifier') {
+      const methodNode = unwrapped.childForFieldName('name') ?? unwrapped.namedChild(1);
+      if (methodNode?.type === 'field_identifier') {
+        return { kind: 'methodCallResult', lhs, receiver: obj.text, method: methodNode.text };
+      }
+    }
+  }
+  return undefined;
+};
+
+/**
+ * Rust pattern binding extractor for `if let` / `while let` constructs that unwrap
+ * enum variants and introduce new typed variables.
+ *
+ * Supported patterns:
+ * - `if let Some(x) = opt`  → x: T  (opt: Option<T>, T already in scopeEnv via NULLABLE_WRAPPER_TYPES)
+ * - `if let Ok(x) = res`    → x: T  (res: Result<T, E>, T extracted from declarationTypeNodes)
+ *
+ * These complement the captured_pattern support in extractDeclaration (which handles
+ * `if let x @ Struct { .. } = expr` but NOT tuple struct unwrapping like Some(x) / Ok(x)).
+ *
+ * Conservative: returns undefined when:
+ * - The source variable's type is unknown (not in scopeEnv)
+ * - The wrapper is not a known single-unwrap variant (Some / Ok)
+ * - The value side is not a simple identifier
+ */
+const extractPatternBinding: PatternBindingExtractor = (
+  node,
+  scopeEnv,
+  declarationTypeNodes,
+  scope,
+) => {
+  let patternNode: SyntaxNode | null = null;
+  let valueNode: SyntaxNode | null = null;
+
+  if (node.type === 'let_condition') {
+    patternNode = node.childForFieldName('pattern');
+    valueNode = node.childForFieldName('value');
+  } else if (node.type === 'match_arm') {
+    // match_arm → pattern field is match_pattern wrapping the actual pattern
+    const matchPatternNode = node.childForFieldName('pattern');
+    // Unwrap match_pattern to get the tuple_struct_pattern inside
+    patternNode = matchPatternNode?.type === 'match_pattern'
+      ? matchPatternNode.firstNamedChild
+      : matchPatternNode;
+    // source variable is in the parent match_expression's 'value' field
+    const matchExpr = node.parent?.parent; // match_arm → match_block → match_expression
+    if (matchExpr?.type === 'match_expression') {
+      valueNode = matchExpr.childForFieldName('value');
+    }
+  }
+  if (!patternNode || !valueNode) return undefined;
+
+  // Only handle tuple_struct_pattern: Some(x) or Ok(x)
+  if (patternNode.type !== 'tuple_struct_pattern') return undefined;
+
+  // Extract the wrapper type name: Some | Ok
+  const wrapperTypeNode = patternNode.childForFieldName('type');
+  if (!wrapperTypeNode) return undefined;
+  const wrapperName = extractSimpleTypeName(wrapperTypeNode);
+  if (wrapperName !== 'Some' && wrapperName !== 'Ok' && wrapperName !== 'Err') return undefined;
+
+  // Extract the inner variable name from the single child of the tuple_struct_pattern.
+  // `Some(x)` → the first named child after the type field is the identifier.
+  // tree-sitter-rust: tuple_struct_pattern has 'type' field + unnamed children for args.
+  let innerVar: string | undefined;
+  for (let i = 0; i < patternNode.namedChildCount; i++) {
+    const child = patternNode.namedChild(i);
+    if (!child) continue;
+    // Skip the type node itself
+    if (child === wrapperTypeNode) continue;
+    if (child.type === 'identifier') {
+      innerVar = child.text;
+      break;
+    }
+  }
+  if (!innerVar) return undefined;
+
+  // The value must be a simple identifier so we can look it up in scopeEnv
+  const sourceVarName = valueNode.type === 'identifier' ? valueNode.text : undefined;
+  if (!sourceVarName) return undefined;
+
+  // For `Some(x)`: Option<T> is already unwrapped to T in scopeEnv (via NULLABLE_WRAPPER_TYPES).
+  // For `Ok(x)`: Result<T, E> stores "Result" in scopeEnv — must use declarationTypeNodes.
+  if (wrapperName === 'Some') {
+    const innerType = scopeEnv.get(sourceVarName);
+    if (!innerType) return undefined;
+    return { varName: innerVar, typeName: innerType };
+  }
+
+  // wrapperName === 'Ok' or 'Err': look up the Result<T, E> type AST node.
+  // Ok(x) → extract T (typeArgs[0]), Err(e) → extract E (typeArgs[1]).
+  const typeNodeKey = `${scope}\0${sourceVarName}`;
+  const typeAstNode = declarationTypeNodes.get(typeNodeKey);
+  if (!typeAstNode) return undefined;
+  const typeArgs = extractGenericTypeArgs(typeAstNode);
+  const argIndex = wrapperName === 'Err' ? 1 : 0;
+  if (typeArgs.length < argIndex + 1) return undefined;
+  return { varName: innerVar, typeName: typeArgs[argIndex] };
+};
+
+// --- For-loop Tier 1c ---
+
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set(['for_expression']);
+
+/** Extract element type from a Rust type annotation AST node.
+ *  Handles: generic_type (Vec<User>), reference_type (&[User]), array_type ([User; N]),
+ *  slice_type ([User]). For call-graph purposes, strips references (&User → User). */
+const extractRustElementTypeFromTypeNode = (typeNode: SyntaxNode, pos: TypeArgPosition = 'last', depth = 0): string | undefined => {
+  if (depth > 50) return undefined;
+  // generic_type: Vec<User>, HashMap<K, V> — extract type arg based on position
+  if (typeNode.type === 'generic_type') {
+    const args = extractGenericTypeArgs(typeNode);
+    if (args.length >= 1) return pos === 'first' ? args[0] : args[args.length - 1];
+  }
+  // reference_type: &[User] or &Vec<User> — unwrap the reference and recurse
+  if (typeNode.type === 'reference_type') {
+    const inner = typeNode.lastNamedChild;
+    if (inner) return extractRustElementTypeFromTypeNode(inner, pos, depth + 1);
+  }
+  // array_type: [User; N] — element is the first child
+  if (typeNode.type === 'array_type') {
+    const elemNode = typeNode.firstNamedChild;
+    if (elemNode) return extractSimpleTypeName(elemNode);
+  }
+  // slice_type: [User] — element is the first child
+  if (typeNode.type === 'slice_type') {
+    const elemNode = typeNode.firstNamedChild;
+    if (elemNode) return extractSimpleTypeName(elemNode);
+  }
+  return undefined;
+};
+
+/** Walk up from a for-loop to the enclosing function_item and search parameters
+ *  for one named `iterableName`. Returns the element type from its annotation. */
+const findRustParamElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  while (current) {
+    if (current.type === 'function_item') {
+      const paramsNode = current.childForFieldName('parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param || param.type !== 'parameter') continue;
+          const nameNode = param.childForFieldName('pattern');
+          if (!nameNode) continue;
+          // Unwrap reference patterns: &users, &mut users
+          let identNode = nameNode;
+          if (identNode.type === 'reference_pattern') {
+            identNode = identNode.lastNamedChild ?? identNode;
+          }
+          if (identNode.type === 'mut_pattern') {
+            identNode = identNode.firstNamedChild ?? identNode;
+          }
+          if (identNode.text !== iterableName) continue;
+          const typeNode = param.childForFieldName('type');
+          if (typeNode) return extractRustElementTypeFromTypeNode(typeNode, pos);
+        }
+      }
+      break;
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** Rust: for user in &users where users has a known container type.
+ *  Unwraps reference_expression (&users, &mut users) to get the iterable name. */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  if (node.type !== 'for_expression') return;
+
+  const patternNode = node.childForFieldName('pattern');
+  const valueNode = node.childForFieldName('value');
+  if (!patternNode || !valueNode) return;
+
+  // Extract iterable name + method — may be &users, users, or users.iter()/keys()/values()
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  let callExprElementType: string | undefined;
+  if (valueNode.type === 'reference_expression') {
+    const inner = valueNode.lastNamedChild;
+    if (inner?.type === 'identifier') iterableName = inner.text;
+  } else if (valueNode.type === 'identifier') {
+    iterableName = valueNode.text;
+  } else if (valueNode.type === 'field_expression') {
+    const prop = valueNode.lastNamedChild;
+    if (prop) iterableName = prop.text;
+  } else if (valueNode.type === 'call_expression') {
+    const funcExpr = valueNode.childForFieldName('function');
+    if (funcExpr?.type === 'field_expression') {
+      // users.iter() → field_expression > identifier + field_identifier
+      const obj = funcExpr.firstNamedChild;
+      if (obj?.type === 'identifier') iterableName = obj.text;
+      // Extract method name: iter, keys, values, into_iter, etc.
+      const field = funcExpr.lastNamedChild;
+      if (field?.type === 'field_identifier') methodName = field.text;
+    } else if (funcExpr?.type === 'identifier') {
+      // Direct function call: for user in get_users()
+      const rawReturn = returnTypeLookup.lookupRawReturnType(funcExpr.text);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    const containerTypeName = scopeEnv.get(iterableName!);
+    const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractRustElementTypeFromTypeNode, findRustParamElementType,
+      typeArgPos,
+    );
+  }
+  if (!elementType) return;
+
+  const loopVarName = extractVarName(patternNode);
+  if (loopVarName) scopeEnv.set(loopVarName, elementType);
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
+  patternBindingNodeTypes: new Set(['let_condition', 'match_arm']),
   extractDeclaration,
   extractInitializer,
   extractParameter,
   scanConstructorBinding,
+  extractForLoopBinding,
+  extractPendingAssignment,
+  extractPatternBinding,
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/shared.ts b/gitnexus/src/core/ingestion/type-extractors/shared.ts
index e01aee02c..ff402adce 100644
--- a/gitnexus/src/core/ingestion/type-extractors/shared.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/shared.ts
@@ -1,12 +1,189 @@
 import type { SyntaxNode } from '../utils.js';
 
+/** Which type argument to extract from a multi-arg generic container.
+ *  - 'first': key type (e.g., K from Map<K,V>) — used for .keys(), .keySet()
+ *  - 'last':  value type (e.g., V from Map<K,V>) — used for .values(), .items(), .iter() */
+export type TypeArgPosition = 'first' | 'last';
+
+// ---------------------------------------------------------------------------
+// Container type descriptors — maps container base names to type parameter
+// semantics per access method. Replaces the simple KEY_METHODS heuristic.
+//
+// For user-defined generics (MyCache<K,V> extends Map<K,V>), heritage-aware
+// fallback can walk the EXTENDS chain to find a matching descriptor.
+// ---------------------------------------------------------------------------
+
+/** Describes which type parameter position each access method yields. */
+interface ContainerDescriptor {
+  /** Number of type parameters (1 = single-element, 2 = key-value) */
+  arity: number;
+  /** Methods that yield the first type parameter (key type for maps) */
+  keyMethods: ReadonlySet<string>;
+  /** Methods that yield the last type parameter (value type) */
+  valueMethods: ReadonlySet<string>;
+}
+
+/** Empty set for containers that have no key-yielding methods */
+const NO_KEYS: ReadonlySet<string> = new Set();
+
+/** Standard key-yielding methods across languages */
+const STD_KEY_METHODS: ReadonlySet<string> = new Set(['keys']);
+const JAVA_KEY_METHODS: ReadonlySet<string> = new Set(['keySet']);
+const CSHARP_KEY_METHODS: ReadonlySet<string> = new Set(['Keys']);
+
+/** Standard value-yielding methods across languages */
+const STD_VALUE_METHODS: ReadonlySet<string> = new Set(['values', 'get', 'pop', 'remove']);
+const CSHARP_VALUE_METHODS: ReadonlySet<string> = new Set(['Values', 'TryGetValue']);
+const SINGLE_ELEMENT_METHODS: ReadonlySet<string> = new Set([
+  'iter', 'into_iter', 'iterator', 'get', 'first', 'last', 'pop',
+  'peek', 'poll', 'find', 'filter', 'map',
+]);
+
+const CONTAINER_DESCRIPTORS: ReadonlyMap<string, ContainerDescriptor> = new Map([
+  // --- Map / Dict types (arity 2: key + value) ---
+  ['Map',           { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['WeakMap',       { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['HashMap',       { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['BTreeMap',      { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['LinkedHashMap', { arity: 2, keyMethods: JAVA_KEY_METHODS,   valueMethods: STD_VALUE_METHODS }],
+  ['TreeMap',       { arity: 2, keyMethods: JAVA_KEY_METHODS,   valueMethods: STD_VALUE_METHODS }],
+  ['dict',          { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['Dict',          { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['Dictionary',    { arity: 2, keyMethods: CSHARP_KEY_METHODS, valueMethods: CSHARP_VALUE_METHODS }],
+  ['SortedDictionary', { arity: 2, keyMethods: CSHARP_KEY_METHODS, valueMethods: CSHARP_VALUE_METHODS }],
+  ['Record',        { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['OrderedDict',   { arity: 2, keyMethods: STD_KEY_METHODS,    valueMethods: STD_VALUE_METHODS }],
+  ['ConcurrentHashMap', { arity: 2, keyMethods: JAVA_KEY_METHODS, valueMethods: STD_VALUE_METHODS }],
+  ['ConcurrentDictionary', { arity: 2, keyMethods: CSHARP_KEY_METHODS, valueMethods: CSHARP_VALUE_METHODS }],
+
+  // --- Single-element containers (arity 1) ---
+  ['Array',     { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['List',      { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['ArrayList', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['LinkedList',{ arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Vec',       { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['VecDeque',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Set',       { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['HashSet',   { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['BTreeSet',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['TreeSet',   { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Queue',     { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Deque',     { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Stack',     { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Sequence',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Iterable',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Iterator',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['IEnumerable', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['IList',     { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['ICollection', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Collection',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['ObservableCollection', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['IEnumerator', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['SortedSet', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['Stream',    { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['MutableList', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['MutableSet',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['LinkedHashSet', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['ArrayDeque',  { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['PriorityQueue', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['MutableMap', { arity: 2, keyMethods: STD_KEY_METHODS, valueMethods: STD_VALUE_METHODS }],
+  ['list',      { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['set',       { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['tuple',     { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+  ['frozenset', { arity: 1, keyMethods: NO_KEYS, valueMethods: SINGLE_ELEMENT_METHODS }],
+]);
+
+/** Determine which type arg to extract based on container type name and access method.
+ *
+ *  Resolution order:
+ *  1. If container is known and method is in keyMethods → 'first'
+ *  2. If container is known with arity 1 → 'last' (same as 'first' for single-arg)
+ *  3. If container is unknown → fall back to method name heuristic
+ *  4. Default: 'last' (value type)
+ */
+export function methodToTypeArgPosition(methodName: string | undefined, containerTypeName?: string): TypeArgPosition {
+  if (containerTypeName) {
+    const desc = CONTAINER_DESCRIPTORS.get(containerTypeName);
+    if (desc) {
+      // Single-element container: always 'last' (= only arg)
+      if (desc.arity === 1) return 'last';
+      // Multi-element: check if method yields key type
+      if (methodName && desc.keyMethods.has(methodName)) return 'first';
+      // Default for multi-element: value type
+      return 'last';
+    }
+  }
+  // Fallback for unknown containers: simple method name heuristic
+  if (methodName && (methodName === 'keys' || methodName === 'keySet' || methodName === 'Keys')) {
+    return 'first';
+  }
+  return 'last';
+}
+
+/** Look up the container descriptor for a type name. Exported for heritage-chain lookups. */
+export function getContainerDescriptor(typeName: string): ContainerDescriptor | undefined {
+  return CONTAINER_DESCRIPTORS.get(typeName);
+}
+
+/**
+ * Shared 3-strategy fallback for resolving the element type of a container variable.
+ * Used by all for-loop extractors to resolve the loop variable's type from the iterable.
+ *
+ * Strategy 1: declarationTypeNodes — raw AST type annotation node (handles container types
+ *             where extractSimpleTypeName returned undefined, e.g., User[], List[User])
+ * Strategy 2: scopeEnv string — extractElementTypeFromString on the stored type string
+ * Strategy 3: AST walk — language-specific upward walk to enclosing function parameters
+ *
+ * @param extractFromTypeNode Language-specific function to extract element type from AST node
+ * @param findParamElementType Optional language-specific AST walk to find parameter type
+ * @param typeArgPos Which generic type arg to extract: 'first' for keys, 'last' for values (default)
+ */
+export function resolveIterableElementType(
+  iterableName: string,
+  node: SyntaxNode,
+  scopeEnv: ReadonlyMap<string, string>,
+  declarationTypeNodes: ReadonlyMap<string, SyntaxNode>,
+  scope: string,
+  extractFromTypeNode: (typeNode: SyntaxNode, pos?: TypeArgPosition) => string | undefined,
+  findParamElementType?: (name: string, startNode: SyntaxNode, pos?: TypeArgPosition) => string | undefined,
+  typeArgPos: TypeArgPosition = 'last',
+): string | undefined {
+  // Strategy 1: declarationTypeNodes AST node (check current scope, then file scope)
+  const typeNode = declarationTypeNodes.get(`${scope}\0${iterableName}`)
+    ?? (scope !== '' ? declarationTypeNodes.get(`\0${iterableName}`) : undefined);
+  if (typeNode) {
+    const t = extractFromTypeNode(typeNode, typeArgPos);
+    if (t) return t;
+  }
+  // Strategy 2: scopeEnv string → extractElementTypeFromString
+  const iterableType = scopeEnv.get(iterableName);
+  if (iterableType) {
+    const el = extractElementTypeFromString(iterableType, typeArgPos);
+    if (el) return el;
+  }
+  // Strategy 3: AST walk to function parameters
+  if (findParamElementType) return findParamElementType(iterableName, node, typeArgPos);
+  return undefined;
+}
+
+/** Known single-arg nullable wrapper types that unwrap to their inner type
+ *  for receiver resolution. Optional<User> → "User", Option<User> → "User".
+ *  Only nullable wrappers — NOT containers (List, Vec) or async wrappers (Promise, Future).
+ *  See WRAPPER_GENERICS below for the full set used in return-type inference. */
+const NULLABLE_WRAPPER_TYPES = new Set([
+  'Optional',    // Java
+  'Option',      // Rust, Scala
+  'Maybe',       // Haskell-style, Kotlin Arrow
+]);
+
 /**
  * Extract the simple type name from a type AST node.
  * Handles generic types (e.g., List<User> → List), qualified names
  * (e.g., models.User → User), and nullable types (e.g., User? → User).
  * Returns undefined for complex types (unions, intersections, function types).
  */
-export const extractSimpleTypeName = (typeNode: SyntaxNode): string | undefined => {
+export const extractSimpleTypeName = (typeNode: SyntaxNode, depth = 0): string | undefined => {
+  if (depth > 50 || typeNode.text.length > 2048) return undefined;
   // Direct type identifier (includes Ruby 'constant' for class names)
   if (typeNode.type === 'type_identifier' || typeNode.type === 'identifier'
     || typeNode.type === 'simple_identifier' || typeNode.type === 'constant') {
@@ -30,18 +207,33 @@ export const extractSimpleTypeName = (typeNode: SyntaxNode): string | undefined
     }
   }
 
+  // C++ template_type (e.g., vector<User>, map<string, User>): extract base name
+  if (typeNode.type === 'template_type') {
+    const base = typeNode.childForFieldName('name') ?? typeNode.firstNamedChild;
+    if (base) return extractSimpleTypeName(base, depth + 1);
+  }
+
   // Generic types: extract the base type (e.g., List<User> → List)
-  if (typeNode.type === 'generic_type' || typeNode.type === 'parameterized_type') {
+  // For nullable wrappers (Optional<User>, Option<User>), unwrap to inner type.
+  if (typeNode.type === 'generic_type' || typeNode.type === 'parameterized_type'
+    || typeNode.type === 'generic_name') {
     const base = typeNode.childForFieldName('name')
       ?? typeNode.childForFieldName('type')
       ?? typeNode.firstNamedChild;
-    if (base) return extractSimpleTypeName(base);
+    if (!base) return undefined;
+    const baseName = extractSimpleTypeName(base, depth + 1);
+    // Unwrap known nullable wrappers: Optional<User> → User, Option<User> → User
+    if (baseName && NULLABLE_WRAPPER_TYPES.has(baseName)) {
+      const args = extractGenericTypeArgs(typeNode);
+      if (args.length >= 1) return args[0];
+    }
+    return baseName;
   }
 
   // Nullable types (Kotlin User?, C# User?)
   if (typeNode.type === 'nullable_type') {
     const inner = typeNode.firstNamedChild;
-    if (inner) return extractSimpleTypeName(inner);
+    if (inner) return extractSimpleTypeName(inner, depth + 1);
   }
 
   // Nullable union types (TS/JS: User | null, User | undefined, User | null | undefined)
@@ -58,7 +250,7 @@ export const extractSimpleTypeName = (typeNode: SyntaxNode): string | undefined
     }
     // Only unwrap if exactly one meaningful type remains
     if (nonNullTypes.length === 1) {
-      return extractSimpleTypeName(nonNullTypes[0]);
+      return extractSimpleTypeName(nonNullTypes[0], depth + 1);
     }
   }
 
@@ -66,24 +258,35 @@ export const extractSimpleTypeName = (typeNode: SyntaxNode): string | undefined
   if (typeNode.type === 'type_annotation' || typeNode.type === 'type'
     || typeNode.type === 'user_type') {
     const inner = typeNode.firstNamedChild;
-    if (inner) return extractSimpleTypeName(inner);
+    if (inner) return extractSimpleTypeName(inner, depth + 1);
   }
 
   // Pointer/reference types (C++, Rust): User*, &User, &mut User
   if (typeNode.type === 'pointer_type' || typeNode.type === 'reference_type') {
-    const inner = typeNode.firstNamedChild;
-    if (inner) return extractSimpleTypeName(inner);
+    // Skip mutable_specifier for Rust &mut references — firstNamedChild would be
+    // `mutable_specifier` not the actual type. Walk named children to find the type.
+    for (let i = 0; i < typeNode.namedChildCount; i++) {
+      const child = typeNode.namedChild(i);
+      if (child && child.type !== 'mutable_specifier') {
+        return extractSimpleTypeName(child, depth + 1);
+      }
+    }
   }
 
-  // PHP primitive_type (string, int, float, bool)
-  if (typeNode.type === 'primitive_type') {
+  // Primitive/predefined types: string, int, float, bool, number, unknown, any
+  // PHP: primitive_type; TS/JS: predefined_type
+  // Java: integral_type (int/long/short/byte), floating_point_type (float/double),
+  //       boolean_type (boolean), void_type (void)
+  if (typeNode.type === 'primitive_type' || typeNode.type === 'predefined_type'
+    || typeNode.type === 'integral_type' || typeNode.type === 'floating_point_type'
+    || typeNode.type === 'boolean_type' || typeNode.type === 'void_type') {
     return typeNode.text;
   }
 
   // PHP named_type / optional_type
   if (typeNode.type === 'named_type' || typeNode.type === 'optional_type') {
     const inner = typeNode.childForFieldName('name') ?? typeNode.firstNamedChild;
-    if (inner) return extractSimpleTypeName(inner);
+    if (inner) return extractSimpleTypeName(inner, depth + 1);
   }
 
   // Name node (PHP)
@@ -101,7 +304,7 @@ export const extractSimpleTypeName = (typeNode: SyntaxNode): string | undefined
 export const extractVarName = (node: SyntaxNode): string | undefined => {
   if (node.type === 'identifier' || node.type === 'simple_identifier'
     || node.type === 'variable_name' || node.type === 'name'
-    || node.type === 'constant') {
+    || node.type === 'constant' || node.type === 'property_identifier') {
     return node.text;
   }
   // variable_declarator (Java/C#): has a 'name' field
@@ -123,15 +326,19 @@ export const TYPED_PARAMETER_TYPES = new Set([
   'optional_parameter',      // TS: (x?: Foo)
   'formal_parameter',        // Java/Kotlin
   'parameter',               // C#/Rust/Go/Python/Swift
+  'typed_parameter',         // Python: def f(x: Foo) — distinct from 'parameter' in tree-sitter-python
   'parameter_declaration',   // C/C++ void f(Type name)
   'simple_parameter',        // PHP function(Foo $x)
   'property_promotion_parameter', // PHP 8.0+ constructor promotion: __construct(private Foo $x)
+  'closure_parameter',       // Rust: |user: User| — typed closure parameters
 ]);
 
 /**
  * Extract type arguments from a generic type node.
  * e.g., List<User, String> → ['User', 'String'], Vec<User> → ['User']
  *
+ * Used by extractSimpleTypeName to unwrap nullable wrappers (Optional<User> → User).
+ *
  * Handles language-specific AST structures:
  * - TS/Java/Rust/Go: generic_type > type_arguments > type nodes
  * - C#:              generic_type > type_argument_list > type nodes
@@ -144,18 +351,20 @@ export const TYPED_PARAMETER_TYPES = new Set([
  *   returns [] for non-generic types).
  * @returns Array of resolved type argument names. Unresolvable arguments are omitted.
  */
-export const extractGenericTypeArgs = (typeNode: SyntaxNode): string[] => {
+export const extractGenericTypeArgs = (typeNode: SyntaxNode, depth = 0): string[] => {
+  if (depth > 50) return [];
   // Unwrap wrapper nodes that may sit above the generic_type
   if (typeNode.type === 'type_annotation' || typeNode.type === 'type'
     || typeNode.type === 'user_type' || typeNode.type === 'nullable_type'
     || typeNode.type === 'optional_type') {
     const inner = typeNode.firstNamedChild;
-    if (inner) return extractGenericTypeArgs(inner);
+    if (inner) return extractGenericTypeArgs(inner, depth + 1);
     return [];
   }
 
-  // Only process generic/parameterized type nodes
-  if (typeNode.type !== 'generic_type' && typeNode.type !== 'parameterized_type') {
+  // Only process generic/parameterized type nodes (includes C#'s generic_name)
+  if (typeNode.type !== 'generic_type' && typeNode.type !== 'parameterized_type'
+    && typeNode.type !== 'generic_name') {
     return [];
   }
 
@@ -233,6 +442,42 @@ export const hasTypeAnnotation = (node: SyntaxNode): boolean => {
   return false;
 };
 
+/** Bare nullable keywords that should not produce a receiver binding. */
+const NULLABLE_KEYWORDS = new Set(['null', 'undefined', 'void', 'None', 'nil']);
+
+/**
+ * Strip nullable wrappers from a type name string.
+ * Used by both lookupInEnv (TypeEnv annotations) and extractReturnTypeName
+ * (return-type text) to normalize types before receiver lookup.
+ *
+ *   "User | null"           → "User"
+ *   "User | undefined"      → "User"
+ *   "User | null | undefined" → "User"
+ *   "User?"                 → "User"
+ *   "User | Repo"           → undefined  (genuine union — refuse)
+ *   "null"                  → undefined
+ */
+export const stripNullable = (typeName: string): string | undefined => {
+  let text = typeName.trim();
+  if (!text) return undefined;
+
+  if (NULLABLE_KEYWORDS.has(text)) return undefined;
+
+  // Strip nullable suffix: User? → User
+  if (text.endsWith('?')) text = text.slice(0, -1).trim();
+
+  // Strip union with null/undefined/None/nil/void
+  if (text.includes('|')) {
+    const parts = text.split('|').map(p => p.trim()).filter(p =>
+      p !== '' && !NULLABLE_KEYWORDS.has(p)
+    );
+    if (parts.length === 1) return parts[0];
+    return undefined; // genuine union or all-nullable — refuse
+  }
+
+  return text || undefined;
+};
+
 /**
  * Unwrap an await_expression to get the inner value.
  * Returns the node itself if not an await_expression, or null if input is null.
@@ -252,11 +497,351 @@ export const extractCalleeName = (callNode: SyntaxNode): string | undefined => {
   return extractSimpleTypeName(func);
 };
 
-/** Find the first named child with the given node type */
-export const findChildByType = (node: SyntaxNode, type: string): SyntaxNode | null => {
-  for (let i = 0; i < node.namedChildCount; i++) {
-    const child = node.namedChild(i);
-    if (child?.type === type) return child;
+// Internal helper: extract the first comma-separated argument from a string,
+// respecting nested angle-bracket and square-bracket depth.
+function extractFirstArg(args: string): string {
+  let depth = 0;
+  for (let i = 0; i < args.length; i++) {
+    const ch = args[i];
+    if (ch === '<' || ch === '[') depth++;
+    else if (ch === '>' || ch === ']') depth--;
+    else if (ch === ',' && depth === 0) return args.slice(0, i).trim();
   }
-  return null;
+  return args.trim();
+}
+
+/**
+ * Extract element type from a container type string.
+ * Uses bracket-balanced parsing (no regex) for generic argument extraction.
+ * Returns undefined for ambiguous or unparseable strings.
+ *
+ * Handles:
+ * - Array<User>    → User  (generic angle brackets)
+ * - User[]         → User  (array suffix)
+ * - []User         → User  (Go slice prefix)
+ * - List[User]     → User  (Python subscript)
+ * - [User]         → User  (Swift array sugar)
+ * - vector<User>   → User  (C++ container)
+ * - Vec<User>      → User  (Rust container)
+ *
+ * For multi-argument generics (Map<K, V>), returns the first or last type arg
+ * based on `pos` ('first' for keys, 'last' for values — default 'last').
+ * Returns undefined when the extracted type is not a simple word.
+ */
+export function extractElementTypeFromString(typeStr: string, pos: TypeArgPosition = 'last'): string | undefined {
+  if (!typeStr || typeStr.length === 0 || typeStr.length > 2048) return undefined;
+
+  // 1. Array suffix: User[] → User
+  if (typeStr.endsWith('[]')) {
+    const base = typeStr.slice(0, -2).trim();
+    return base && /^\w+$/.test(base) ? base : undefined;
+  }
+
+  // 2. Go slice prefix: []User → User
+  if (typeStr.startsWith('[]')) {
+    const element = typeStr.slice(2).trim();
+    return element && /^\w+$/.test(element) ? element : undefined;
+  }
+
+  // 3. Swift array sugar: [User] → User
+  //    Must start with '[', end with ']', and contain no angle brackets
+  //    (to avoid confusing with List[User] handled below).
+  if (typeStr.startsWith('[') && typeStr.endsWith(']') && !typeStr.includes('<')) {
+    const element = typeStr.slice(1, -1).trim();
+    return element && /^\w+$/.test(element) ? element : undefined;
+  }
+
+  // 4. Generic bracket-balanced extraction: Array<User> / List[User] / Vec<User>
+  //    Find the first opening bracket (< or [) and pick the one that appears first.
+  const openAngle = typeStr.indexOf('<');
+  const openSquare = typeStr.indexOf('[');
+
+  let openIdx = -1;
+  let openChar = '';
+  let closeChar = '';
+
+  if (openAngle >= 0 && (openSquare < 0 || openAngle < openSquare)) {
+    openIdx = openAngle;
+    openChar = '<';
+    closeChar = '>';
+  } else if (openSquare >= 0) {
+    openIdx = openSquare;
+    openChar = '[';
+    closeChar = ']';
+  }
+
+  if (openIdx < 0) return undefined;
+
+  // Walk bracket-balanced from the character after the opening bracket to find
+  // the matching close bracket, tracking depth for nested brackets.
+  // All bracket types (<, >, [, ]) contribute to depth uniformly, but only the
+  // selected closeChar can match at depth 0 (prevents cross-bracket miscounting).
+  let depth = 0;
+  const start = openIdx + 1;
+  let lastCommaIdx = -1; // Track last top-level comma for 'last' position
+  for (let i = start; i < typeStr.length; i++) {
+    const ch = typeStr[i];
+    if (ch === '<' || ch === '[') {
+      depth++;
+    } else if (ch === '>' || ch === ']') {
+      if (depth === 0) {
+        // At depth 0 — only match if it is our selected close bracket.
+        if (ch !== closeChar) return undefined; // mismatched bracket = malformed
+        if (pos === 'last' && lastCommaIdx >= 0) {
+          // Return last arg (text after last comma)
+          const lastArg = typeStr.slice(lastCommaIdx + 1, i).trim();
+          return lastArg && /^\w+$/.test(lastArg) ? lastArg : undefined;
+        }
+        const inner = typeStr.slice(start, i).trim();
+        const firstArg = extractFirstArg(inner);
+        return firstArg && /^\w+$/.test(firstArg) ? firstArg : undefined;
+      }
+      depth--;
+    } else if (ch === ',' && depth === 0) {
+      if (pos === 'first') {
+        // Return first arg (text before first comma)
+        const arg = typeStr.slice(start, i).trim();
+        return arg && /^\w+$/.test(arg) ? arg : undefined;
+      }
+      lastCommaIdx = i;
+    }
+  }
+
+  return undefined;
+}
+
+// ── Return type text helpers ─────────────────────────────────────────────
+// extractReturnTypeName works on raw return-type text already stored in
+// SymbolDefinition (e.g. "User", "Promise<User>", "User | null", "*User").
+// Extracts the base user-defined type name.
+
+/** Primitive / built-in types that should NOT produce a receiver binding. */
+const PRIMITIVE_TYPES = new Set([
+  'string', 'number', 'boolean', 'void', 'int', 'float', 'double', 'long',
+  'short', 'byte', 'char', 'bool', 'str', 'i8', 'i16', 'i32', 'i64',
+  'u8', 'u16', 'u32', 'u64', 'f32', 'f64', 'usize', 'isize',
+  'undefined', 'null', 'None', 'nil',
+]);
+
+/**
+ * Extract a simple type name from raw return-type text.
+ * Handles common patterns:
+ *   "User"                → "User"
+ *   "Promise<User>"       → "User"   (unwrap wrapper generics)
+ *   "Option<User>"        → "User"
+ *   "Result<User, Error>" → "User"   (first type arg)
+ *   "User | null"         → "User"   (strip nullable union)
+ *   "User?"               → "User"   (strip nullable suffix)
+ *   "*User"               → "User"   (Go pointer)
+ *   "&User"               → "User"   (Rust reference)
+ * Returns undefined for complex types or primitives.
+ */
+const WRAPPER_GENERICS = new Set([
+  'Promise', 'Observable', 'Future', 'CompletableFuture', 'Task', 'ValueTask',  // async wrappers
+  'Option', 'Some', 'Optional', 'Maybe',                                         // nullable wrappers
+  'Result', 'Either',                                                             // result wrappers
+  // Rust smart pointers (Deref to inner type)
+  'Rc', 'Arc', 'Weak',                                                          // pointer types
+  'MutexGuard', 'RwLockReadGuard', 'RwLockWriteGuard',                          // guard types
+  'Ref', 'RefMut',                                                               // RefCell guards
+  'Cow',                                                                         // copy-on-write
+  // Containers (List, Array, Vec, Set, etc.) are intentionally excluded —
+  // methods are called on the container, not the element type.
+  // Non-wrapper generics return the base type (e.g., List) via the else branch.
+]);
+
+/**
+ * Extracts the first type argument from a comma-separated generic argument string,
+ * respecting nested angle brackets. For example:
+ *   "Result<User, Error>"  → "Result<User, Error>"  (no top-level comma)
+ *   "User, Error"          → "User"
+ *   "Map<K, V>, string"    → "Map<K, V>"
+ */
+function extractFirstGenericArg(args: string): string {
+  let depth = 0;
+  for (let i = 0; i < args.length; i++) {
+    if (args[i] === '<') depth++;
+    else if (args[i] === '>') depth--;
+    else if (args[i] === ',' && depth === 0) return args.slice(0, i).trim();
+  }
+  return args.trim();
+}
+
+/**
+ * Extract the first non-lifetime type argument from a generic argument string.
+ * Skips Rust lifetime parameters (e.g., `'a`, `'_`) to find the actual type.
+ *   "'_, User"       → "User"
+ *   "'a, User"       → "User"
+ *   "User, Error"    → "User"  (no lifetime — delegates to extractFirstGenericArg)
+ */
+function extractFirstTypeArg(args: string): string {
+  let remaining = args;
+  while (remaining) {
+    const first = extractFirstGenericArg(remaining);
+    if (!first.startsWith("'")) return first;
+    // Skip past this lifetime arg + the comma separator
+    const commaIdx = remaining.indexOf(',', first.length);
+    if (commaIdx < 0) return first; // only lifetimes — fall through
+    remaining = remaining.slice(commaIdx + 1).trim();
+  }
+  return args.trim();
+}
+
+const MAX_RETURN_TYPE_INPUT_LENGTH = 2048;
+const MAX_RETURN_TYPE_LENGTH = 512;
+
+export const extractReturnTypeName = (raw: string, depth = 0): string | undefined => {
+  if (depth > 10) return undefined;
+  if (raw.length > MAX_RETURN_TYPE_INPUT_LENGTH) return undefined;
+  let text = raw.trim();
+  if (!text) return undefined;
+
+  // Strip pointer/reference prefixes: *User, &User, &mut User
+  text = text.replace(/^[&*]+\s*(mut\s+)?/, '');
+
+  // Strip nullable suffix: User?
+  text = text.replace(/\?$/, '');
+
+  // Handle union types: "User | null" → "User"
+  if (text.includes('|')) {
+    const parts = text.split('|').map(p => p.trim()).filter(p =>
+      p !== 'null' && p !== 'undefined' && p !== 'void' && p !== 'None' && p !== 'nil'
+    );
+    if (parts.length === 1) text = parts[0];
+    else return undefined; // genuine union — too complex
+  }
+
+  // Handle generics: Promise<User> → unwrap if wrapper, else take base
+  const genericMatch = text.match(/^(\w+)\s*<(.+)>$/);
+  if (genericMatch) {
+    const [, base, args] = genericMatch;
+    if (WRAPPER_GENERICS.has(base)) {
+      // Take the first non-lifetime type argument, using bracket-balanced splitting
+      // so that nested generics like Result<User, Error> are not split at the inner
+      // comma. Lifetime parameters (Rust 'a, '_) are skipped.
+      const firstArg = extractFirstTypeArg(args);
+      return extractReturnTypeName(firstArg, depth + 1);
+    }
+    // Non-wrapper generic: return the base type (e.g., Map<K,V> → Map)
+    return PRIMITIVE_TYPES.has(base.toLowerCase()) ? undefined : base;
+  }
+
+  // Bare wrapper type without generic argument (e.g. Task, Promise, Option)
+  // should not produce a binding — these are meaningless without a type parameter
+  if (WRAPPER_GENERICS.has(text)) return undefined;
+
+  // Handle qualified names: models.User → User, Models::User → User, \App\Models\User → User
+  if (text.includes('::') || text.includes('.') || text.includes('\\')) {
+    text = text.split(/::|[.\\]/).pop()!;
+  }
+
+  // Final check: skip primitives
+  if (PRIMITIVE_TYPES.has(text) || PRIMITIVE_TYPES.has(text.toLowerCase())) return undefined;
+
+  // Must start with uppercase (class/type convention) or be a valid identifier
+  if (!/^[A-Z_]\w*$/.test(text)) return undefined;
+
+  // If the final extracted type name is too long, reject it
+  if (text.length > MAX_RETURN_TYPE_LENGTH) return undefined;
+
+  return text;
+};
+
+// ── Property declared-type extraction ────────────────────────────────────
+// Shared between parse-worker (worker path) and parsing-processor (sequential path).
+
+/**
+ * Extract the declared type of a property/field from its AST definition node.
+ * Handles cross-language patterns:
+ * - TypeScript: `name: Type` → type_annotation child
+ * - Java: `Type name` → type child on field_declaration
+ * - C#: `Type Name { get; set; }` → type child on property_declaration
+ * - Go: `Name Type` → type child on field_declaration
+ * - Kotlin: `var name: Type` → variable_declaration child with type field
+ *
+ * Returns the normalized type name, or undefined if no type can be extracted.
+ */
+export const extractPropertyDeclaredType = (definitionNode: SyntaxNode | null): string | undefined => {
+  if (!definitionNode) return undefined;
+
+  // Strategy 1: Look for a `type` or `type_annotation` named field
+  const typeNode = definitionNode.childForFieldName?.('type');
+  if (typeNode) {
+    const typeName = extractSimpleTypeName(typeNode);
+    if (typeName) return typeName;
+    // Fallback: use the raw text (for complex types like User[] or List<User>)
+    const text = typeNode.text?.trim();
+    if (text && text.length < 100) return text;
+  }
+
+  // Strategy 2: Walk children looking for type_annotation (TypeScript pattern)
+  for (let i = 0; i < definitionNode.childCount; i++) {
+    const child = definitionNode.child(i);
+    if (!child) continue;
+    if (child.type === 'type_annotation') {
+      // Type annotation has the actual type as a child
+      for (let j = 0; j < child.childCount; j++) {
+        const typeChild = child.child(j);
+        if (typeChild && typeChild.type !== ':') {
+          const typeName = extractSimpleTypeName(typeChild);
+          if (typeName) return typeName;
+          const text = typeChild.text?.trim();
+          if (text && text.length < 100) return text;
+        }
+      }
+    }
+  }
+
+  // Strategy 3: For Java field_declaration, the type is a sibling of variable_declarator
+  // AST: (field_declaration type: (type_identifier) declarator: (variable_declarator ...))
+  const parentDecl = definitionNode.parent;
+  if (parentDecl) {
+    const parentType = parentDecl.childForFieldName?.('type');
+    if (parentType) {
+      const typeName = extractSimpleTypeName(parentType);
+      if (typeName) return typeName;
+    }
+  }
+
+  // Strategy 4: Kotlin property_declaration — type is nested inside variable_declaration child
+  // AST: (property_declaration (variable_declaration (simple_identifier) ":" (user_type (type_identifier))))
+  // Kotlin's variable_declaration has NO named 'type' field — children are all positional.
+  for (let i = 0; i < definitionNode.childCount; i++) {
+    const child = definitionNode.child(i);
+    if (child?.type === 'variable_declaration') {
+      // Try named field first (works for other languages sharing this strategy)
+      const varType = child.childForFieldName?.('type');
+      if (varType) {
+        const typeName = extractSimpleTypeName(varType);
+        if (typeName) return typeName;
+        const text = varType.text?.trim();
+        if (text && text.length < 100) return text;
+      }
+      // Fallback: walk unnamed children for user_type / type_identifier (Kotlin)
+      for (let j = 0; j < child.namedChildCount; j++) {
+        const varChild = child.namedChild(j);
+        if (varChild && (varChild.type === 'user_type' || varChild.type === 'type_identifier'
+          || varChild.type === 'nullable_type' || varChild.type === 'generic_type')) {
+          const typeName = extractSimpleTypeName(varChild);
+          if (typeName) return typeName;
+        }
+      }
+    }
+  }
+
+  // Strategy 5: PHP @var PHPDoc — look for preceding comment with @var Type
+  // Handles pre-PHP-7.4 code: /** @var Address */ public $address;
+  const prevSibling = definitionNode.previousNamedSibling ?? definitionNode.parent?.previousNamedSibling;
+  if (prevSibling?.type === 'comment') {
+    const commentText = prevSibling.text;
+    const varMatch = commentText?.match(/@var\s+([A-Z][\w\\]*)/);
+    if (varMatch) {
+      // Strip namespace prefix: \App\Models\User → User
+      const raw = varMatch[1];
+      const base = raw.includes('\\') ? raw.split('\\').pop()! : raw;
+      if (base && /^[A-Z]\w*$/.test(base)) return base;
+    }
+  }
+
+  return undefined;
 };
diff --git a/gitnexus/src/core/ingestion/type-extractors/swift.ts b/gitnexus/src/core/ingestion/type-extractors/swift.ts
index 3d3dbe729..e142497b6 100644
--- a/gitnexus/src/core/ingestion/type-extractors/swift.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/swift.ts
@@ -1,6 +1,7 @@
 import type { SyntaxNode } from '../utils.js';
 import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner } from './types.js';
-import { extractSimpleTypeName, extractVarName, findChildByType, hasTypeAnnotation } from './shared.js';
+import { extractSimpleTypeName, extractVarName, hasTypeAnnotation } from './shared.js';
+import { findChild } from '../resolvers/utils.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'property_declaration',
@@ -10,9 +11,9 @@ const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
 const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<string, string>): void => {
   // Swift property_declaration has pattern and type_annotation
   const pattern = node.childForFieldName('pattern')
-    ?? findChildByType(node, 'pattern');
+    ?? findChild(node, 'pattern');
   const typeAnnotation = node.childForFieldName('type')
-    ?? findChildByType(node, 'type_annotation');
+    ?? findChild(node, 'type_annotation');
   if (!pattern || !typeAnnotation) return;
   const varName = extractVarName(pattern) ?? pattern.text;
   const typeName = extractSimpleTypeName(typeAnnotation);
@@ -45,14 +46,14 @@ const extractParameter: ParameterExtractor = (node: SyntaxNode, env: Map<string,
 const extractInitializer: InitializerExtractor = (node: SyntaxNode, env: Map<string, string>, classNames: ClassNameLookup): void => {
   if (node.type !== 'property_declaration') return;
   // Skip if has type annotation — extractDeclaration handled it
-  if (node.childForFieldName('type') || findChildByType(node, 'type_annotation')) return;
+  if (node.childForFieldName('type') || findChild(node, 'type_annotation')) return;
   // Find pattern (variable name)
-  const pattern = node.childForFieldName('pattern') ?? findChildByType(node, 'pattern');
+  const pattern = node.childForFieldName('pattern') ?? findChild(node, 'pattern');
   if (!pattern) return;
   const varName = extractVarName(pattern) ?? pattern.text;
   if (!varName || env.has(varName)) return;
   // Find call_expression in the value
-  const callExpr = findChildByType(node, 'call_expression');
+  const callExpr = findChild(node, 'call_expression');
   if (!callExpr) return;
   const callee = callExpr.firstNamedChild;
   if (!callee) return;
diff --git a/gitnexus/src/core/ingestion/type-extractors/types.ts b/gitnexus/src/core/ingestion/type-extractors/types.ts
index 29c76e7dc..e6c4c227b 100644
--- a/gitnexus/src/core/ingestion/type-extractors/types.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/types.ts
@@ -24,10 +24,119 @@ export type ConstructorBindingScanner = (node: SyntaxNode) => { varName: string;
  *  rather than in AST fields. Returns undefined if no return type can be determined. */
 export type ReturnTypeExtractor = (node: SyntaxNode) => string | undefined;
 
+/** Infer the type name of a literal AST node for overload disambiguation.
+ *  Returns the canonical type name (e.g. 'int', 'String', 'boolean') or undefined
+ *  for non-literal nodes. Only used when resolveCallTarget has multiple candidates
+ *  with parameterTypes — ~1-3% of call sites. */
+export type LiteralTypeInferrer = (node: SyntaxNode) => string | undefined;
+
+/** Detect constructor-style call expressions that don't use `new` keyword.
+ *  Returns the constructor class name if the node's initializer is a constructor call,
+ *  or undefined otherwise. Used for virtual dispatch in languages like Kotlin
+ *  where constructors are syntactically identical to function calls, and C++
+ *  where smart pointer factory functions (make_shared/make_unique) wrap constructors. */
+export type ConstructorTypeDetector = (node: SyntaxNode, classNames: ClassNameLookup) => string | undefined;
+
+/** Unwrap a declared type name to its inner type for virtual dispatch comparison.
+ *  E.g., C++ shared_ptr<Animal> → Animal. Returns undefined if no unwrapping applies. */
+export type DeclaredTypeUnwrapper = (declaredType: string, typeNode: SyntaxNode) => string | undefined;
+
+/** Narrow lookup interface for resolving a callee name → return type name.
+ *  Backed by SymbolTable.lookupFuzzyCallable; passed via ForLoopExtractorContext.
+ *  Conservative: returns undefined when the callee is ambiguous (0 or 2+ matches). */
+export interface ReturnTypeLookup {
+  /** Processed type name after stripping wrappers (e.g., 'User' from 'Promise<User>').
+   *  Use for call-result variable bindings (`const b = foo()`). */
+  lookupReturnType(callee: string): string | undefined;
+  /** Raw return type as declared in the symbol (e.g., '[]User', 'List<User>').
+   *  Use for iterable-element extraction (`for v := range foo()`). */
+  lookupRawReturnType(callee: string): string | undefined;
+}
+
+/** Context object passed to ForLoopExtractor.
+ *  Groups the four parameters that were previously positional. */
+export interface ForLoopExtractorContext {
+  /** Mutable type-env for the current scope — extractor writes bindings here */
+  scopeEnv: Map<string, string>;
+  /** Maps `scope\0varName` to the declaration's type annotation AST node */
+  declarationTypeNodes: ReadonlyMap<string, SyntaxNode>;
+  /** Current scope key, e.g. `"process@42"` */
+  scope: string;
+  /** Resolves a callee name to its declared return type (undefined = unknown/ambiguous) */
+  returnTypeLookup: ReturnTypeLookup;
+}
+
+/** Extracts loop variable type binding from a for-each statement. */
+export type ForLoopExtractor = (node: SyntaxNode, ctx: ForLoopExtractorContext) => void;
+
+/** Discriminated union for pending Tier-2 propagation items.
+ *  - `copy`             — `const b = a` (identifier alias, propagate a's type to b)
+ *  - `callResult`       — `const b = foo()` (bind b to foo's declared return type)
+ *  - `fieldAccess`      — `const b = a.field` (bind b to field's declaredType on a's type)
+ *  - `methodCallResult` — `const b = a.method()` (bind b to method's returnType on a's type) */
+export type PendingAssignment =
+  | { kind: 'copy'; lhs: string; rhs: string }
+  | { kind: 'callResult'; lhs: string; callee: string }
+  | { kind: 'fieldAccess'; lhs: string; receiver: string; field: string }
+  | { kind: 'methodCallResult'; lhs: string; receiver: string; method: string };
+
+/** Extracts a pending assignment for Tier 2 propagation.
+ *  Returns a PendingAssignment when the RHS is a bare identifier (`copy`), a
+ *  call expression (`callResult`), a field access (`fieldAccess`), or a
+ *  method call with receiver (`methodCallResult`) and the LHS has no resolved type yet.
+ *  May return an array of PendingAssignment items for destructuring patterns
+ *  (e.g., `const { a, b } = obj` emits N fieldAccess items).
+ *  Returns undefined if the node is not a matching assignment. */
+export type PendingAssignmentExtractor = (
+  node: SyntaxNode,
+  scopeEnv: ReadonlyMap<string, string>,
+) => PendingAssignment | PendingAssignment[] | undefined;
+
+/** Result of a pattern binding extraction. */
+export interface PatternBindingResult {
+  varName: string;
+  typeName: string;
+  /** Optional: AST node whose position range should be used for the patternOverride.
+   *  When present, the override uses this node's range instead of the auto-detected
+   *  branch scope. Used by null-check narrowing to target the if-body specifically. */
+  narrowingRange?: { startIndex: number; endIndex: number };
+}
+
+/** Extracts a typed variable binding from a pattern-matching construct.
+ *  Returns { varName, typeName } for patterns that introduce NEW variables
+ *  or narrow existing variables (null-check narrowing).
+ *  Examples: `if let Some(user) = opt` (Rust), `x instanceof User user` (Java),
+ *  `if (x != null)` (null-check narrowing in TS/Kotlin/C#).
+ *  Conservative: returns undefined when the source variable's type is unknown.
+ *
+ *  @param scopeEnv   Read-only view of already-resolved type bindings in the current scope.
+ *  @param declarationTypeNodes  Maps `scope\0varName` to the original declaration's type
+ *    annotation AST node. Allows extracting generic type arguments (e.g., T from Result<T,E>)
+ *    that are stripped during normal TypeEnv extraction.
+ *  @param scope  Current scope key (e.g. `"process@42"`) for declarationTypeNodes lookups. */
+export type PatternBindingExtractor = (
+  node: SyntaxNode,
+  scopeEnv: ReadonlyMap<string, string>,
+  declarationTypeNodes: ReadonlyMap<string, SyntaxNode>,
+  scope: string,
+) => PatternBindingResult | undefined;
+
 /** Per-language type extraction configuration */
 export interface LanguageTypeConfig {
+  /** Allow pattern binding to overwrite existing scopeEnv entries.
+   *  WARNING: Enables function-scope type pollution. Only for languages with
+   *  smart-cast semantics (e.g., Kotlin `when/is`) where the subject variable
+   *  already exists in scopeEnv from its declaration. */
+  readonly allowPatternBindingOverwrite?: boolean;
   /** Node types that represent typed declarations for this language */
   declarationNodeTypes: ReadonlySet<string>;
+  /** AST node types for for-each/for-in statements with explicit element types. */
+  forLoopNodeTypes?: ReadonlySet<string>;
+  /** Optional allowlist of AST node types on which extractPatternBinding should run.
+   *  When present, extractPatternBinding is only invoked for nodes whose type is in this set,
+   *  short-circuiting the call for all other node types. When absent, every node is passed to
+   *  extractPatternBinding (legacy behaviour). */
+  patternBindingNodeTypes?: ReadonlySet<string>;
   /** Extract a (varName → typeName) binding from a declaration node */
   extractDeclaration: TypeBindingExtractor;
   /** Extract a (varName → typeName) binding from a parameter node */
@@ -44,4 +153,20 @@ export interface LanguageTypeConfig {
   /** Extract return type from comment-based annotations (e.g. YARD @return [Type]).
    *  Called as fallback when extractMethodSignature finds no AST-based return type. */
   extractReturnType?: ReturnTypeExtractor;
+  /** Extract loop variable → type binding from a for-each AST node. */
+  extractForLoopBinding?: ForLoopExtractor;
+  /** Extract pending assignment for Tier 2 propagation.
+   *  Called on declaration/assignment nodes; returns a PendingAssignment when the RHS
+   *  is a bare identifier (copy) or call expression (callResult) and the LHS has no
+   *  resolved type yet. Language-specific because AST shapes differ widely. */
+  extractPendingAssignment?: PendingAssignmentExtractor;
+  /** Extract a typed variable binding from a pattern-matching construct.
+   *  Called on every AST node; returns { varName, typeName } when the node introduces a new
+   *  typed variable via pattern matching (e.g. `if let Some(x) = opt`, `x instanceof T t`).
+   *  The extractor receives the current scope's resolved bindings (read-only) to look up the
+   *  source variable's type. Returns undefined for non-matching nodes or unknown source types. */
+  extractPatternBinding?: PatternBindingExtractor;
+  inferLiteralType?: LiteralTypeInferrer;
+  detectConstructorType?: ConstructorTypeDetector;
+  unwrapDeclaredType?: DeclaredTypeUnwrapper;
 }
diff --git a/gitnexus/src/core/ingestion/type-extractors/typescript.ts b/gitnexus/src/core/ingestion/type-extractors/typescript.ts
index 86b357b05..eba798cc0 100644
--- a/gitnexus/src/core/ingestion/type-extractors/typescript.ts
+++ b/gitnexus/src/core/ingestion/type-extractors/typescript.ts
@@ -1,12 +1,13 @@
 import type { SyntaxNode } from '../utils.js';
-import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ReturnTypeExtractor } from './types.js';
-import { extractSimpleTypeName, extractVarName, hasTypeAnnotation, unwrapAwait, extractCalleeName } from './shared.js';
+import type { LanguageTypeConfig, ParameterExtractor, TypeBindingExtractor, InitializerExtractor, ClassNameLookup, ConstructorBindingScanner, ReturnTypeExtractor, PendingAssignmentExtractor, PendingAssignment, ForLoopExtractor, PatternBindingExtractor, LiteralTypeInferrer } from './types.js';
+import { extractSimpleTypeName, extractVarName, hasTypeAnnotation, unwrapAwait, extractCalleeName, extractElementTypeFromString, extractGenericTypeArgs, resolveIterableElementType, methodToTypeArgPosition, type TypeArgPosition } from './shared.js';
 
 const DECLARATION_NODE_TYPES: ReadonlySet<string> = new Set([
   'lexical_declaration',
   'variable_declaration',
   'function_declaration',   // JSDoc @param on function declarations
   'method_definition',      // JSDoc @param on class methods
+  'public_field_definition', // class field: private users: User[]
 ]);
 
 const normalizeJsDocType = (raw: string): string | undefined => {
@@ -80,6 +81,18 @@ const extractDeclaration: TypeBindingExtractor = (node: SyntaxNode, env: Map<str
     return;
   }
 
+  // Class field: `private users: User[]` — public_field_definition has name + type fields directly.
+  if (node.type === 'public_field_definition') {
+    const nameNode = node.childForFieldName('name');
+    const typeAnnotation = node.childForFieldName('type');
+    if (!nameNode || !typeAnnotation) return;
+    const varName = nameNode.text;
+    if (!varName) return;
+    const typeName = extractSimpleTypeName(typeAnnotation);
+    if (typeName) env.set(varName, typeName);
+    return;
+  }
+
   for (let i = 0; i < node.namedChildCount; i++) {
     const declarator = node.namedChild(i);
     if (declarator?.type !== 'variable_declarator') continue;
@@ -191,11 +204,432 @@ const extractReturnType: ReturnTypeExtractor = (node) => {
   return undefined;
 };
 
+const FOR_LOOP_NODE_TYPES: ReadonlySet<string> = new Set([
+  'for_in_statement',
+]);
+
+/** TS function/method node types that carry a parameters list. */
+const TS_FUNCTION_NODE_TYPES = new Set([
+  'function_declaration', 'function_expression', 'arrow_function',
+  'method_definition', 'generator_function', 'generator_function_declaration',
+]);
+
+/**
+ * Extract element type from a TypeScript type annotation AST node.
+ * Handles:
+ *   type_annotation ": User[]"  →  array_type → type_identifier "User"
+ *   type_annotation ": Array<User>"  →  generic_type → extractGenericTypeArgs → "User"
+ * Falls back to text-based extraction via extractElementTypeFromString.
+ */
+const extractTsElementTypeFromAnnotation = (typeAnnotation: SyntaxNode, pos: TypeArgPosition = 'last', depth = 0): string | undefined => {
+  if (depth > 50) return undefined;
+  // Unwrap type_annotation (the node text includes ': ' prefix)
+  const inner = typeAnnotation.type === 'type_annotation'
+    ? (typeAnnotation.firstNamedChild ?? typeAnnotation)
+    : typeAnnotation;
+
+  // readonly User[] — readonly_type wraps array_type: unwrap and recurse
+  if (inner.type === 'readonly_type') {
+    const wrapped = inner.firstNamedChild;
+    if (wrapped) return extractTsElementTypeFromAnnotation(wrapped, pos, depth + 1);
+  }
+
+  // User[] — array_type: first named child is the element type
+  if (inner.type === 'array_type') {
+    const elem = inner.firstNamedChild;
+    if (elem) return extractSimpleTypeName(elem);
+  }
+
+  // Array<User>, Map<string, User> — generic_type
+  // pos determines which type arg: 'first' for keys, 'last' for values
+  if (inner.type === 'generic_type') {
+    const args = extractGenericTypeArgs(inner);
+    if (args.length >= 1) return pos === 'first' ? args[0] : args[args.length - 1];
+  }
+
+  // Fallback: strip ': ' prefix from type_annotation text and use string extraction
+  const rawText = inner.text;
+  return extractElementTypeFromString(rawText, pos);
+};
+
+/**
+ * Search a statement_block (function body) for a variable_declarator named `iterableName`
+ * that has a type annotation, preceding the given `beforeNode`.
+ * Returns the element type from the type annotation, or undefined.
+ */
+const findTsLocalDeclElementType = (
+  iterableName: string,
+  blockNode: SyntaxNode,
+  beforeNode: SyntaxNode,
+  pos: TypeArgPosition = 'last',
+): string | undefined => {
+  for (let i = 0; i < blockNode.namedChildCount; i++) {
+    const stmt = blockNode.namedChild(i);
+    if (!stmt) continue;
+    // Stop when we reach the for-loop itself
+    if (stmt === beforeNode || stmt.startIndex >= beforeNode.startIndex) break;
+    // Look for lexical_declaration or variable_declaration
+    if (stmt.type !== 'lexical_declaration' && stmt.type !== 'variable_declaration') continue;
+    for (let j = 0; j < stmt.namedChildCount; j++) {
+      const decl = stmt.namedChild(j);
+      if (decl?.type !== 'variable_declarator') continue;
+      const nameNode = decl.childForFieldName('name');
+      if (nameNode?.text !== iterableName) continue;
+      const typeAnnotation = decl.childForFieldName('type');
+      if (typeAnnotation) return extractTsElementTypeFromAnnotation(typeAnnotation, pos);
+    }
+  }
+  return undefined;
+};
+
+/**
+ * Walk up the AST from a for-loop node to find the enclosing function scope,
+ * then search (1) its parameter list and (2) local declarations in the body
+ * for a variable named `iterableName` with a container type annotation.
+ * Returns the element type extracted from the annotation, or undefined.
+ */
+const findTsIterableElementType = (iterableName: string, startNode: SyntaxNode, pos: TypeArgPosition = 'last'): string | undefined => {
+  let current: SyntaxNode | null = startNode.parent;
+  // Capture the immediate statement_block parent to search local declarations
+  const blockNode = current?.type === 'statement_block' ? current : null;
+
+  while (current) {
+    if (TS_FUNCTION_NODE_TYPES.has(current.type)) {
+      // Search function parameters
+      const paramsNode = current.childForFieldName('parameters')
+        ?? current.childForFieldName('formal_parameters');
+      if (paramsNode) {
+        for (let i = 0; i < paramsNode.namedChildCount; i++) {
+          const param = paramsNode.namedChild(i);
+          if (!param) continue;
+          const patternNode = param.childForFieldName('pattern') ?? param.childForFieldName('name');
+          if (patternNode?.text === iterableName) {
+            const typeAnnotation = param.childForFieldName('type');
+            if (typeAnnotation) return extractTsElementTypeFromAnnotation(typeAnnotation, pos);
+          }
+        }
+      }
+      // Search local declarations in the function body (statement_block)
+      if (blockNode) {
+        const result = findTsLocalDeclElementType(iterableName, blockNode, startNode, pos);
+        if (result) return result;
+      }
+      break; // stop at the nearest function boundary
+    }
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/**
+ * TypeScript/JavaScript: for (const user of users) where users has a known array type.
+ *
+ * Both `for...of` and `for...in` use the same `for_in_statement` AST node in tree-sitter.
+ * We differentiate by checking for the `of` keyword among the unnamed children.
+ *
+ * Tier 1c: resolves the element type via three strategies in priority order:
+ *   1. declarationTypeNodes — raw type annotation AST node (covers Array<User> from declarations)
+ *   2. scopeEnv string — extractElementTypeFromString on the stored type (covers locally annotated vars)
+ *   3. AST walk — walks up to the enclosing function's parameters to read User[] annotations directly
+ * Only handles `for...of`; `for...in` produces string keys, not element types.
+ */
+const extractForLoopBinding: ForLoopExtractor = (node, { scopeEnv, declarationTypeNodes, scope, returnTypeLookup }): void => {
+  if (node.type !== 'for_in_statement') return;
+
+  // Confirm this is `for...of`, not `for...in`, by scanning unnamed children for the keyword text.
+  let isForOf = false;
+  for (let i = 0; i < node.childCount; i++) {
+    const child = node.child(i);
+    if (child && !child.isNamed && child.text === 'of') {
+      isForOf = true;
+      break;
+    }
+  }
+  if (!isForOf) return;
+
+  // The iterable is the `right` field — may be identifier, member_expression, or call_expression.
+  const rightNode = node.childForFieldName('right');
+  let iterableName: string | undefined;
+  let methodName: string | undefined;
+  let callExprElementType: string | undefined;
+  if (rightNode?.type === 'identifier') {
+    iterableName = rightNode.text;
+  } else if (rightNode?.type === 'member_expression') {
+    const prop = rightNode.childForFieldName('property');
+    if (prop) iterableName = prop.text;
+  } else if (rightNode?.type === 'call_expression') {
+    // entries.values() → call_expression > function: member_expression > object + property
+    // this.repos.values() → nested member_expression: extract property from inner member
+    // getUsers() → call_expression > function: identifier (Phase 7.3 — return-type path)
+    const fn = rightNode.childForFieldName('function');
+    if (fn?.type === 'member_expression') {
+      const obj = fn.childForFieldName('object');
+      const prop = fn.childForFieldName('property');
+      if (obj?.type === 'identifier') {
+        iterableName = obj.text;
+      } else if (obj?.type === 'member_expression') {
+        // this.repos.values() → obj = this.repos → extract 'repos'
+        const innerProp = obj.childForFieldName('property');
+        if (innerProp) iterableName = innerProp.text;
+      }
+      if (prop?.type === 'property_identifier') methodName = prop.text;
+    } else if (fn?.type === 'identifier') {
+      // Direct function call: for (const user of getUsers())
+      const rawReturn = returnTypeLookup.lookupRawReturnType(fn.text);
+      if (rawReturn) callExprElementType = extractElementTypeFromString(rawReturn);
+    }
+  }
+  if (!iterableName && !callExprElementType) return;
+
+  let elementType: string | undefined;
+  if (callExprElementType) {
+    elementType = callExprElementType;
+  } else {
+    // Look up the container's base type name for descriptor-aware resolution
+    const containerTypeName = scopeEnv.get(iterableName!);
+    const typeArgPos = methodToTypeArgPosition(methodName, containerTypeName);
+    elementType = resolveIterableElementType(
+      iterableName!, node, scopeEnv, declarationTypeNodes, scope,
+      extractTsElementTypeFromAnnotation, findTsIterableElementType,
+      typeArgPos,
+    );
+  }
+  if (!elementType) return;
+
+  // The loop variable is the `left` field.
+  const leftNode = node.childForFieldName('left');
+  if (!leftNode) return;
+
+  // Handle destructured for-of: for (const [k, v] of entries)
+  // AST: left = array_pattern directly (no variable_declarator wrapper)
+  // Bind the LAST identifier to the element type (value in [key, value] patterns)
+  if (leftNode.type === 'array_pattern') {
+    const lastChild = leftNode.lastNamedChild;
+    if (lastChild?.type === 'identifier') {
+      scopeEnv.set(lastChild.text, elementType);
+    }
+    return;
+  }
+
+  if (leftNode.type === 'object_pattern') {
+    // Object destructuring (e.g., `for (const { id } of users)`) destructures
+    // into fields of the element type. Without field-level resolution, we cannot
+    // bind individual properties to their correct types. Skip to avoid false bindings.
+    return;
+  }
+
+  let loopVarNode: SyntaxNode | null = leftNode;
+  // `const user` parses as: left → variable_declarator containing an identifier named `user`
+  if (loopVarNode.type === 'variable_declarator') {
+    loopVarNode = loopVarNode.childForFieldName('name') ?? loopVarNode.firstNamedChild;
+  }
+  if (!loopVarNode) return;
+
+  const loopVarName = extractVarName(loopVarNode);
+  if (loopVarName) scopeEnv.set(loopVarName, elementType);
+};
+
+/** TS/JS: const alias = u → variable_declarator with name/value fields.
+ *  Also handles destructuring: `const { a, b } = obj` → N fieldAccess items. */
+const extractPendingAssignment: PendingAssignmentExtractor = (node, scopeEnv) => {
+  for (let i = 0; i < node.namedChildCount; i++) {
+    const child = node.namedChild(i);
+    if (!child || child.type !== 'variable_declarator') continue;
+    const nameNode = child.childForFieldName('name');
+    const valueNode = child.childForFieldName('value');
+    if (!nameNode || !valueNode) continue;
+
+    // Object destructuring: `const { address, name } = user`
+    // Emits N fieldAccess items — one per destructured binding.
+    if (nameNode.type === 'object_pattern' && valueNode.type === 'identifier') {
+      const receiver = valueNode.text;
+      const items: PendingAssignment[] = [];
+      for (let j = 0; j < nameNode.namedChildCount; j++) {
+        const prop = nameNode.namedChild(j);
+        if (!prop) continue;
+        if (prop.type === 'shorthand_property_identifier_pattern') {
+          // `const { name } = user` → shorthand: varName = fieldName
+          const varName = prop.text;
+          if (!scopeEnv.has(varName)) {
+            items.push({ kind: 'fieldAccess', lhs: varName, receiver, field: varName });
+          }
+        } else if (prop.type === 'pair_pattern') {
+          // `const { address: addr } = user` → pair_pattern: key=field, value=varName
+          const keyNode = prop.childForFieldName('key');
+          const valNode = prop.childForFieldName('value');
+          if (keyNode && valNode) {
+            const fieldName = keyNode.text;
+            const varName = valNode.text;
+            if (!scopeEnv.has(varName)) {
+              items.push({ kind: 'fieldAccess', lhs: varName, receiver, field: fieldName });
+            }
+          }
+        }
+      }
+      if (items.length > 0) return items;
+      continue;
+    }
+
+    const lhs = nameNode.text;
+    if (scopeEnv.has(lhs)) continue;
+    if (valueNode.type === 'identifier') return { kind: 'copy', lhs, rhs: valueNode.text };
+    // member_expression RHS → fieldAccess (a.field, this.field)
+    if (valueNode.type === 'member_expression') {
+      const obj = valueNode.childForFieldName('object');
+      const prop = valueNode.childForFieldName('property');
+      if (obj && prop?.type === 'property_identifier' &&
+          (obj.type === 'identifier' || obj.type === 'this')) {
+        return { kind: 'fieldAccess', lhs, receiver: obj.text, field: prop.text };
+      }
+      continue;
+    }
+    // Unwrap await: `const user = await fetchUser()` or `await a.getC()`
+    const callNode = unwrapAwait(valueNode);
+    if (!callNode || callNode.type !== 'call_expression') continue;
+    const funcNode = callNode.childForFieldName('function');
+    if (!funcNode) continue;
+    // Simple call → callResult: getUser()
+    if (funcNode.type === 'identifier') {
+      return { kind: 'callResult', lhs, callee: funcNode.text };
+    }
+    // Method call with receiver → methodCallResult: a.getC()
+    if (funcNode.type === 'member_expression') {
+      const obj = funcNode.childForFieldName('object');
+      const prop = funcNode.childForFieldName('property');
+      if (obj && prop?.type === 'property_identifier' &&
+          (obj.type === 'identifier' || obj.type === 'this')) {
+        return { kind: 'methodCallResult', lhs, receiver: obj.text, method: prop.text };
+      }
+    }
+  }
+  return undefined;
+};
+
+/** Null-check keywords that indicate a null-comparison in binary expressions. */
+const NULL_CHECK_KEYWORDS = new Set(['null', 'undefined']);
+
+/**
+ * Find the if-body (consequence) block for a null-check binary_expression.
+ * Walks up from the binary_expression through parenthesized_expression to if_statement,
+ * then returns the consequence block (statement_block).
+ *
+ * AST structure: if_statement > parenthesized_expression > binary_expression
+ *                if_statement > statement_block (consequence)
+ */
+const findIfConsequenceBlock = (binaryExpr: SyntaxNode): SyntaxNode | undefined => {
+  // Walk up to find the if_statement (typically: binary_expression > parenthesized_expression > if_statement)
+  let current = binaryExpr.parent;
+  while (current) {
+    if (current.type === 'if_statement') {
+      // The consequence is the first statement_block child of if_statement
+      for (let i = 0; i < current.childCount; i++) {
+        const child = current.child(i);
+        if (child?.type === 'statement_block') return child;
+      }
+      return undefined;
+    }
+    // Stop climbing at function/block boundaries — don't cross scope
+    if (current.type === 'function_declaration' || current.type === 'function_expression'
+      || current.type === 'arrow_function' || current.type === 'method_definition') return undefined;
+    current = current.parent;
+  }
+  return undefined;
+};
+
+/** TS instanceof narrowing: `x instanceof User` → bind x to User.
+ *  Also handles null-check narrowing: `x !== null`, `x != undefined` etc.
+ *  instanceof: first-writer-wins (no prior type binding).
+ *  null-check: position-indexed narrowing via narrowingRange. */
+const extractPatternBinding: PatternBindingExtractor = (node, scopeEnv, declarationTypeNodes, scope) => {
+  if (node.type !== 'binary_expression') return undefined;
+
+  // Check for instanceof first (existing behavior)
+  const instanceofOp = node.children.find(c => !c.isNamed && c.text === 'instanceof');
+  if (instanceofOp) {
+    const left = node.namedChild(0);
+    const right = node.namedChild(1);
+    if (left?.type !== 'identifier' || right?.type !== 'identifier') return undefined;
+    return { varName: left.text, typeName: right.text };
+  }
+
+  // Null-check narrowing: x !== null, x != null, x !== undefined, x != undefined
+  const op = node.children.find(c => !c.isNamed && (c.text === '!==' || c.text === '!='));
+  if (!op) return undefined;
+
+  const left = node.namedChild(0);
+  const right = node.namedChild(1);
+  if (!left || !right) return undefined;
+
+  // Determine which side is the variable and which is null/undefined
+  let varNode: SyntaxNode | undefined;
+  let isNullCheck = false;
+  if (left.type === 'identifier' && NULL_CHECK_KEYWORDS.has(right.text)) {
+    varNode = left;
+    isNullCheck = true;
+  } else if (right.type === 'identifier' && NULL_CHECK_KEYWORDS.has(left.text)) {
+    varNode = right;
+    isNullCheck = true;
+  }
+  if (!isNullCheck || !varNode) return undefined;
+
+  const varName = varNode.text;
+  // Look up the variable's resolved type (already stripped of nullable by extractSimpleTypeName)
+  const resolvedType = scopeEnv.get(varName);
+  if (!resolvedType) return undefined;
+
+  // Check if the original declaration type was nullable by looking at the raw AST type node.
+  // extractSimpleTypeName already strips nullable markers, so we need the original to know
+  // if narrowing is meaningful (i.e., the variable was declared as nullable).
+  const declTypeNode = declarationTypeNodes.get(`${scope}\0${varName}`);
+  if (!declTypeNode) return undefined;
+  const declText = declTypeNode.text;
+  // Only narrow if the original declaration was nullable
+  if (!declText.includes('null') && !declText.includes('undefined')) return undefined;
+
+  // Find the if-body block to scope the narrowing
+  const ifBody = findIfConsequenceBlock(node);
+  if (!ifBody) return undefined;
+
+  return {
+    varName,
+    typeName: resolvedType,
+    narrowingRange: { startIndex: ifBody.startIndex, endIndex: ifBody.endIndex },
+  };
+};
+
+/** Infer the type of a literal AST node for TypeScript overload disambiguation. */
+const inferTsLiteralType: LiteralTypeInferrer = (node) => {
+  switch (node.type) {
+    case 'number':
+      return 'number';
+    case 'string':
+    case 'template_string':
+      return 'string';
+    case 'true':
+    case 'false':
+      return 'boolean';
+    case 'null':
+      return 'null';
+    case 'undefined':
+      return 'undefined';
+    case 'regex':
+      return 'RegExp';
+    default:
+      return undefined;
+  }
+};
+
 export const typeConfig: LanguageTypeConfig = {
   declarationNodeTypes: DECLARATION_NODE_TYPES,
+  forLoopNodeTypes: FOR_LOOP_NODE_TYPES,
+  patternBindingNodeTypes: new Set(['binary_expression']),
   extractDeclaration,
   extractParameter,
   extractInitializer,
   scanConstructorBinding,
   extractReturnType,
+  extractForLoopBinding,
+  extractPendingAssignment,
+  extractPatternBinding,
+  inferLiteralType: inferTsLiteralType,
 };
diff --git a/gitnexus/src/core/ingestion/utils.ts b/gitnexus/src/core/ingestion/utils.ts
index b0da07588..510321d4f 100644
--- a/gitnexus/src/core/ingestion/utils.ts
+++ b/gitnexus/src/core/ingestion/utils.ts
@@ -1,98 +1,4 @@
-import type Parser from 'tree-sitter';
 import { SupportedLanguages } from '../../config/supported-languages.js';
-import { generateId } from '../../lib/utils.js';
-
-/** Tree-sitter AST node. Re-exported for use across ingestion modules. */
-export type SyntaxNode = Parser.SyntaxNode;
-
-/**
- * Ordered list of definition capture keys for tree-sitter query matches.
- * Used to extract the definition node from a capture map.
- */
-export const DEFINITION_CAPTURE_KEYS = [
-  'definition.function',
-  'definition.class',
-  'definition.interface',
-  'definition.method',
-  'definition.struct',
-  'definition.enum',
-  'definition.namespace',
-  'definition.module',
-  'definition.trait',
-  'definition.impl',
-  'definition.type',
-  'definition.const',
-  'definition.static',
-  'definition.typedef',
-  'definition.macro',
-  'definition.union',
-  'definition.property',
-  'definition.record',
-  'definition.delegate',
-  'definition.annotation',
-  'definition.constructor',
-  'definition.template',
-] as const;
-
-/** Extract the definition node from a tree-sitter query capture map. */
-export const getDefinitionNodeFromCaptures = (captureMap: Record<string, any>): any | null => {
-  for (const key of DEFINITION_CAPTURE_KEYS) {
-    if (captureMap[key]) return captureMap[key];
-  }
-  return null;
-};
-
-/**
- * Node types that represent function/method definitions across languages.
- * Used to find the enclosing function for a call site.
- */
-export const FUNCTION_NODE_TYPES = new Set([
-  // TypeScript/JavaScript
-  'function_declaration',
-  'arrow_function',
-  'function_expression',
-  'method_definition',
-  'generator_function_declaration',
-  // Python
-  'function_definition',
-  // Common async variants
-  'async_function_declaration',
-  'async_arrow_function',
-  // Java
-  'method_declaration',
-  'constructor_declaration',
-  // C/C++
-  // 'function_definition' already included above
-  // Go
-  // 'method_declaration' already included from Java
-  // C#
-  'local_function_statement',
-  // Rust
-  'function_item',
-  'impl_item', // Methods inside impl blocks
-  // PHP
-  'anonymous_function',
-  // Kotlin
-  'lambda_literal',
-  // Swift
-  'init_declaration',
-  'deinit_declaration',
-  // Ruby
-  'method',           // def foo
-  'singleton_method', // def self.foo
-]);
-
-/**
- * Node types for standard function declarations that need C/C++ declarator handling.
- * Used by extractFunctionName to determine how to extract the function name.
- */
-export const FUNCTION_DECLARATION_TYPES = new Set([
-  'function_declaration',
-  'function_definition',
-  'async_function_declaration',
-  'generator_function_declaration',
-  'function_item',
-]);
 
 /**
  * Built-in function/method names that should not be tracked as call targets.
@@ -259,191 +165,6 @@ export const BUILT_IN_NAMES = new Set([
 /** Check if a name is a built-in function or common noise that should be filtered out */
 export const isBuiltInOrNoise = (name: string): boolean => BUILT_IN_NAMES.has(name);
 
-/** AST node types that represent a class-like container (for HAS_METHOD edge extraction) */
-export const CLASS_CONTAINER_TYPES = new Set([
-  'class_declaration', 'abstract_class_declaration',
-  'interface_declaration', 'struct_declaration', 'record_declaration',
-  'class_specifier', 'struct_specifier',
-  'impl_item', 'trait_item',
-  'class_definition',
-  'trait_declaration',
-  'protocol_declaration',
-  // Ruby
-  'class',
-  'module',
-  // Kotlin
-  'object_declaration',
-  'companion_object',
-]);
-
-export const CONTAINER_TYPE_TO_LABEL: Record<string, string> = {
-  class_declaration: 'Class',
-  abstract_class_declaration: 'Class',
-  interface_declaration: 'Interface',
-  struct_declaration: 'Struct',
-  struct_specifier: 'Struct',
-  class_specifier: 'Class',
-  class_definition: 'Class',
-  impl_item: 'Impl',
-  trait_item: 'Trait',
-  trait_declaration: 'Trait',
-  record_declaration: 'Record',
-  protocol_declaration: 'Interface',
-  class: 'Class',
-  module: 'Module',
-  object_declaration: 'Class',
-  companion_object: 'Class',
-};
-
-/** Walk up AST to find enclosing class/struct/interface/impl, return its generateId or null.
- *  For Go method_declaration nodes, extracts receiver type (e.g. `func (u *User) Save()` → User struct). */
-export const findEnclosingClassId = (node: any, filePath: string): string | null => {
-  let current = node.parent;
-  while (current) {
-    // Go: method_declaration has a receiver parameter with the struct type
-    if (current.type === 'method_declaration') {
-      const receiver = current.childForFieldName?.('receiver');
-      if (receiver) {
-        // receiver is a parameter_list: (u *User) or (u User)
-        const paramDecl = receiver.namedChildren?.find?.((c: any) => c.type === 'parameter_declaration');
-        if (paramDecl) {
-          const typeNode = paramDecl.childForFieldName?.('type');
-          if (typeNode) {
-            // Unwrap pointer_type (*User → User)
-            const inner = typeNode.type === 'pointer_type' ? typeNode.firstNamedChild : typeNode;
-            if (inner && (inner.type === 'type_identifier' || inner.type === 'identifier')) {
-              return generateId('Struct', `${filePath}:${inner.text}`);
-            }
-          }
-        }
-      }
-    }
-    if (CLASS_CONTAINER_TYPES.has(current.type)) {
-      // Rust impl_item: for `impl Trait for Struct {}`, pick the type after `for`
-      if (current.type === 'impl_item') {
-        const children = current.children ?? [];
-        const forIdx = children.findIndex((c: any) => c.text === 'for');
-        if (forIdx !== -1) {
-          const nameNode = children.slice(forIdx + 1).find((c: any) =>
-            c.type === 'type_identifier' || c.type === 'identifier'
-          );
-          if (nameNode) {
-            return generateId('Impl', `${filePath}:${nameNode.text}`);
-          }
-        }
-        // Fall through: plain `impl Struct {}` — use first type_identifier below
-      }
-      const nameNode = current.childForFieldName?.('name')
-        ?? current.children?.find((c: any) =>
-          c.type === 'type_identifier' || c.type === 'identifier' || c.type === 'name' || c.type === 'constant'
-        );
-      if (nameNode) {
-        const label = CONTAINER_TYPE_TO_LABEL[current.type] || 'Class';
-        return generateId(label, `${filePath}:${nameNode.text}`);
-      }
-    }
-    current = current.parent;
-  }
-  return null;
-};
-
-/**
- * Extract function name and label from a function_definition or similar AST node.
- * Handles C/C++ qualified_identifier (ClassName::MethodName) and other language patterns.
- */
-export const extractFunctionName = (node: any): { funcName: string | null; label: string } => {
-  let funcName: string | null = null;
-  let label = 'Function';
-
-  // Swift init/deinit
-  if (node.type === 'init_declaration' || node.type === 'deinit_declaration') {
-    return {
-      funcName: node.type === 'init_declaration' ? 'init' : 'deinit',
-      label: 'Constructor',
-    };
-  }
-
-  if (FUNCTION_DECLARATION_TYPES.has(node.type)) {
-    // C/C++: function_definition -> [pointer_declarator ->] function_declarator -> qualified_identifier/identifier
-    // Unwrap pointer_declarator / reference_declarator wrappers to reach function_declarator
-    let declarator = node.childForFieldName?.('declarator') ||
-                        node.children?.find((c: any) => c.type === 'function_declarator');
-    while (declarator && (declarator.type === 'pointer_declarator' || declarator.type === 'reference_declarator')) {
-      declarator = declarator.childForFieldName?.('declarator') ||
-                   declarator.children?.find((c: any) =>
-                     c.type === 'function_declarator' || c.type === 'pointer_declarator' || c.type === 'reference_declarator');
-    }
-    if (declarator) {
-      const innerDeclarator = declarator.childForFieldName?.('declarator') ||
-                               declarator.children?.find((c: any) =>
-                                 c.type === 'qualified_identifier' || c.type === 'identifier' || c.type === 'parenthesized_declarator');
-
-      if (innerDeclarator?.type === 'qualified_identifier') {
-        const nameNode = innerDeclarator.childForFieldName?.('name') ||
-                          innerDeclarator.children?.find((c: any) => c.type === 'identifier');
-        if (nameNode?.text) {
-          funcName = nameNode.text;
-          label = 'Method';
-        }
-      } else if (innerDeclarator?.type === 'identifier') {
-        funcName = innerDeclarator.text;
-      } else if (innerDeclarator?.type === 'parenthesized_declarator') {
-        const nestedId = innerDeclarator.children?.find((c: any) =>
-          c.type === 'qualified_identifier' || c.type === 'identifier');
-        if (nestedId?.type === 'qualified_identifier') {
-          const nameNode = nestedId.childForFieldName?.('name') ||
-                            nestedId.children?.find((c: any) => c.type === 'identifier');
-          if (nameNode?.text) {
-            funcName = nameNode.text;
-            label = 'Method';
-          }
-        } else if (nestedId?.type === 'identifier') {
-          funcName = nestedId.text;
-        }
-      }
-    }
-
-    // Fallback for other languages (Kotlin uses simple_identifier, Swift uses simple_identifier)
-    if (!funcName) {
-      const nameNode = node.childForFieldName?.('name') ||
-                        node.children?.find((c: any) => c.type === 'identifier' || c.type === 'property_identifier' || c.type === 'simple_identifier');
-      funcName = nameNode?.text;
-    }
-  } else if (node.type === 'impl_item') {
-    const funcItem = node.children?.find((c: any) => c.type === 'function_item');
-    if (funcItem) {
-      const nameNode = funcItem.childForFieldName?.('name') ||
-                        funcItem.children?.find((c: any) => c.type === 'identifier');
-      funcName = nameNode?.text;
-      label = 'Method';
-    }
-  } else if (node.type === 'method_definition') {
-    const nameNode = node.childForFieldName?.('name') ||
-                      node.children?.find((c: any) => c.type === 'property_identifier');
-    funcName = nameNode?.text;
-    label = 'Method';
-  } else if (node.type === 'method_declaration' || node.type === 'constructor_declaration') {
-    const nameNode = node.childForFieldName?.('name') ||
-                      node.children?.find((c: any) => c.type === 'identifier');
-    funcName = nameNode?.text;
-    label = 'Method';
-  } else if (node.type === 'arrow_function' || node.type === 'function_expression') {
-    const parent = node.parent;
-    if (parent?.type === 'variable_declarator') {
-      const nameNode = parent.childForFieldName?.('name') ||
-                        parent.children?.find((c: any) => c.type === 'identifier');
-      funcName = nameNode?.text;
-    }
-  } else if (node.type === 'method' || node.type === 'singleton_method') {
-    const nameNode = node.childForFieldName?.('name') ||
-                      node.children?.find((c: any) => c.type === 'identifier');
-    funcName = nameNode?.text;
-    label = 'Method';
-  }
-
-  return { funcName, label };
-};
-
 /**
  * Yield control to the event loop so spinners/progress can render.
  * Call periodically in hot loops to prevent UI freezes.
@@ -453,23 +174,6 @@ export const yieldToEventLoop = (): Promise<void> => new Promise(resolve => setI
 /** Ruby extensionless filenames recognised as Ruby source */
 const RUBY_EXTENSIONLESS_FILES = new Set(['Rakefile', 'Gemfile', 'Guardfile', 'Vagrantfile', 'Brewfile']);
 
-/**
- * Find a child of `childType` within a sibling node of `siblingType`.
- * Used for Kotlin AST traversal where visibility_modifier lives inside a modifiers sibling.
- */
-export const findSiblingChild = (parent: any, siblingType: string, childType: string): any | null => {
-  for (let i = 0; i < parent.childCount; i++) {
-    const sibling = parent.child(i);
-    if (sibling?.type === siblingType) {
-      for (let j = 0; j < sibling.childCount; j++) {
-        const child = sibling.child(j);
-        if (child?.type === childType) return child;
-      }
-    }
-  }
-  return null;
-};
-
 /**
  * Map file extension to SupportedLanguage enum
  */
@@ -519,389 +223,6 @@ export const getLanguageFromFilename = (filename: string): SupportedLanguages |
   return null;
 };
 
-export interface MethodSignature {
-  parameterCount: number | undefined;
-  returnType: string | undefined;
-}
-
-const CALL_ARGUMENT_LIST_TYPES = new Set([
-  'arguments',
-  'argument_list',
-  'value_arguments',
-]);
-
-/**
- * Extract parameter count and return type text from an AST method/function node.
- * Works across languages by looking for common AST patterns.
- */
-export const extractMethodSignature = (node: SyntaxNode | null | undefined): MethodSignature => {
-  let parameterCount: number | undefined = 0;
-  let returnType: string | undefined;
-  let isVariadic = false;
-
-  if (!node) return { parameterCount, returnType };
-
-  const paramListTypes = new Set([
-    'formal_parameters', 'parameters', 'parameter_list',
-    'function_parameters', 'method_parameters', 'function_value_parameters',
-  ]);
-
-  // Node types that indicate variadic/rest parameters
-  const VARIADIC_PARAM_TYPES = new Set([
-    'variadic_parameter_declaration',  // Go: ...string
-    'variadic_parameter',              // Rust: extern "C" fn(...)
-    'spread_parameter',                // Java: Object... args
-    'list_splat_pattern',              // Python: *args
-    'dictionary_splat_pattern',        // Python: **kwargs
-  ]);
-
-  const findParameterList = (current: SyntaxNode): SyntaxNode | null => {
-    for (const child of current.children) {
-      if (paramListTypes.has(child.type)) return child;
-    }
-    for (const child of current.children) {
-      const nested = findParameterList(child);
-      if (nested) return nested;
-    }
-    return null;
-  };
-
-  const parameterList = (
-    paramListTypes.has(node.type) ? node                // node itself IS the parameter list (e.g. C# primary constructors)
-      : node.childForFieldName?.('parameters')
-        ?? findParameterList(node)
-  );
-
-  if (parameterList && paramListTypes.has(parameterList.type)) {
-    for (const param of parameterList.namedChildren) {
-      if (param.type === 'comment') continue;
-      if (param.text === 'self' || param.text === '&self' || param.text === '&mut self' ||
-          param.type === 'self_parameter') {
-        continue;
-      }
-      // Check for variadic parameter types
-      if (VARIADIC_PARAM_TYPES.has(param.type)) {
-        isVariadic = true;
-        continue;
-      }
-      // TypeScript/JavaScript: rest parameter — required_parameter containing rest_pattern
-      if (param.type === 'required_parameter' || param.type === 'optional_parameter') {
-        for (const child of param.children) {
-          if (child.type === 'rest_pattern') {
-            isVariadic = true;
-            break;
-          }
-        }
-        if (isVariadic) continue;
-      }
-      // Kotlin: vararg modifier on a regular parameter
-      if (param.type === 'parameter' || param.type === 'formal_parameter') {
-        const prev = param.previousSibling;
-        if (prev?.type === 'parameter_modifiers' && prev.text.includes('vararg')) {
-          isVariadic = true;
-        }
-      }
-      parameterCount++;
-    }
-    // C/C++: bare `...` token in parameter list (not a named child — check all children)
-    if (!isVariadic) {
-      for (const child of parameterList.children) {
-        if (!child.isNamed && child.text === '...') {
-          isVariadic = true;
-          break;
-        }
-      }
-    }
-  }
-
-  // Return type extraction — language-specific field names
-  // Go: 'result' field is either a type_identifier or parameter_list (multi-return)
-  const goResult = node.childForFieldName?.('result');
-  if (goResult) {
-    if (goResult.type === 'parameter_list') {
-      // Multi-return: extract first parameter's type only (e.g. (*User, error) → *User)
-      const firstParam = goResult.firstNamedChild;
-      if (firstParam?.type === 'parameter_declaration') {
-        const typeNode = firstParam.childForFieldName('type');
-        if (typeNode) returnType = typeNode.text;
-      } else if (firstParam) {
-        // Unnamed return types: (string, error) — first child is a bare type node
-        returnType = firstParam.text;
-      }
-    } else {
-      returnType = goResult.text;
-    }
-  }
-
-  // Rust: 'return_type' field — the value IS the type node (e.g. primitive_type, type_identifier).
-  // Skip if the node is a type_annotation (TS/Python), which is handled by the generic loop below.
-  if (!returnType) {
-    const rustReturn = node.childForFieldName?.('return_type');
-    if (rustReturn && rustReturn.type !== 'type_annotation') {
-      returnType = rustReturn.text;
-    }
-  }
-
-  // C/C++: 'type' field on function_definition
-  if (!returnType) {
-    const cppType = node.childForFieldName?.('type');
-    if (cppType && cppType.text !== 'void') {
-      returnType = cppType.text;
-    }
-  }
-
-  // C#: 'returns' field on method_declaration
-  if (!returnType) {
-    const csReturn = node.childForFieldName?.('returns');
-    if (csReturn && csReturn.text !== 'void') {
-      returnType = csReturn.text;
-    }
-  }
-
-  // TS/Rust/Python/C#/Kotlin: type_annotation or return_type child
-  if (!returnType) {
-    for (const child of node.children) {
-      if (child.type === 'type_annotation' || child.type === 'return_type') {
-        const typeNode = child.children.find((c) => c.isNamed);
-        if (typeNode) returnType = typeNode.text;
-      }
-    }
-  }
-
-  if (isVariadic) parameterCount = undefined;
-
-  return { parameterCount, returnType };
-};
-
-/**
- * Count direct arguments for a call expression across common tree-sitter grammars.
- * Returns undefined when the argument container cannot be located cheaply.
- */
-export const countCallArguments = (callNode: SyntaxNode | null | undefined): number | undefined => {
-  if (!callNode) return undefined;
-
-  // Direct field or direct child (most languages)
-  let argsNode: SyntaxNode | null | undefined = callNode.childForFieldName('arguments')
-    ?? callNode.children.find((child) => CALL_ARGUMENT_LIST_TYPES.has(child.type));
-
-  // Kotlin/Swift: call_expression → call_suffix → value_arguments
-  // Search one level deeper for languages that wrap arguments in a suffix node
-  if (!argsNode) {
-    for (const child of callNode.children) {
-      if (!child.isNamed) continue;
-      const nested = child.children.find((gc) => CALL_ARGUMENT_LIST_TYPES.has(gc.type));
-      if (nested) { argsNode = nested; break; }
-    }
-  }
-
-  if (!argsNode) return undefined;
-
-  let count = 0;
-  for (const child of argsNode.children) {
-    if (!child.isNamed) continue;
-    if (child.type === 'comment') continue;
-    count++;
-  }
-
-  return count;
-};
-
-// ── Call-form discrimination (Phase 1, Step D) ─────────────────────────
-
-/**
- * AST node types that indicate a member-access wrapper around the callee name.
- * When nameNode.parent.type is one of these, the call is a member call.
- */
-const MEMBER_ACCESS_NODE_TYPES = new Set([
-  'member_expression',           // TS/JS: obj.method()
-  'attribute',                   // Python: obj.method()
-  'member_access_expression',    // C#: obj.Method()
-  'field_expression',            // Rust/C++: obj.method() / ptr->method()
-  'selector_expression',         // Go: obj.Method()
-  'navigation_suffix',           // Kotlin/Swift: obj.method() — nameNode sits inside navigation_suffix
-  'member_binding_expression',   // C#: user?.Method() — null-conditional access
-]);
-
-/**
- * Call node types that are inherently constructor invocations.
- * Only includes patterns that the tree-sitter queries already capture as @call.
- */
-const CONSTRUCTOR_CALL_NODE_TYPES = new Set([
-  'constructor_invocation',              // Kotlin: Foo()
-  'new_expression',                      // TS/JS/C++: new Foo()
-  'object_creation_expression',          // Java/C#/PHP: new Foo()
-  'implicit_object_creation_expression', // C# 9: User u = new(...)
-  'composite_literal',                   // Go: User{...}
-  'struct_expression',                   // Rust: User { ... }
-]);
-
-/**
- * AST node types for scoped/qualified calls (e.g., Foo::new() in Rust, Foo::bar() in C++).
- */
-const SCOPED_CALL_NODE_TYPES = new Set([
-  'scoped_identifier',           // Rust: Foo::new()
-  'qualified_identifier',        // C++: ns::func()
-]);
-
-type CallForm = 'free' | 'member' | 'constructor';
-
-/**
- * Infer whether a captured call site is a free call, member call, or constructor.
- * Returns undefined if the form cannot be determined.
- *
- * Works by inspecting the AST structure between callNode (@call) and nameNode (@call.name).
- * No tree-sitter query changes needed — the distinction is in the node types.
- */
-export const inferCallForm = (
-  callNode: SyntaxNode,
-  nameNode: SyntaxNode,
-): CallForm | undefined => {
-  // 1. Constructor: callNode itself is a constructor invocation (Kotlin)
-  if (CONSTRUCTOR_CALL_NODE_TYPES.has(callNode.type)) {
-    return 'constructor';
-  }
-
-  // 2. Member call: nameNode's parent is a member-access wrapper
-  const nameParent = nameNode.parent;
-  if (nameParent && MEMBER_ACCESS_NODE_TYPES.has(nameParent.type)) {
-    return 'member';
-  }
-
-  // 3. PHP: the callNode itself distinguishes member vs free calls
-  if (callNode.type === 'member_call_expression' || callNode.type === 'nullsafe_member_call_expression') {
-    return 'member';
-  }
-  if (callNode.type === 'scoped_call_expression') {
-    return 'member'; // static call Foo::bar()
-  }
-
-  // 4. Java method_invocation: member if it has an 'object' field
-  if (callNode.type === 'method_invocation' && callNode.childForFieldName('object')) {
-    return 'member';
-  }
-
-  // 4b. Ruby call with receiver: obj.method
-  if (callNode.type === 'call' && callNode.childForFieldName('receiver')) {
-    return 'member';
-  }
-
-  // 5. Scoped calls (Rust Foo::new(), C++ ns::func()): treat as free
-  //    The receiver is a type, not an instance — handled differently in Phase 3
-  if (nameParent && SCOPED_CALL_NODE_TYPES.has(nameParent.type)) {
-    return 'free';
-  }
-
-  // 6. Default: if nameNode is a direct child of callNode, it's a free call
-  if (nameNode.parent === callNode || nameParent?.parent === callNode) {
-    return 'free';
-  }
-
-  return undefined;
-};
-
-/**
- * Extract the receiver identifier for member calls.
- * Only captures simple identifiers — returns undefined for complex expressions
- * like getUser().save() or arr[0].method().
- */
-const SIMPLE_RECEIVER_TYPES = new Set([
-  'identifier',
-  'simple_identifier',
-  'variable_name',     // PHP $variable (tree-sitter-php)
-  'name',              // PHP name node
-  'this',              // TS/JS/Java/C# this.method()
-  'self',              // Rust/Python self.method()
-  'super',             // TS/JS/Java/Kotlin/Ruby super.method()
-  'super_expression',  // Kotlin wraps super in super_expression
-  'base',              // C# base.Method()
-  'parent',            // PHP parent::method()
-  'constant',          // Ruby CONSTANT.method() (uppercase identifiers)
-]);
-
-export const extractReceiverName = (
-  nameNode: SyntaxNode,
-): string | undefined => {
-  const parent = nameNode.parent;
-  if (!parent) return undefined;
-
-  // PHP: member_call_expression / nullsafe_member_call_expression — receiver is on the callNode
-  // Java: method_invocation — receiver is the 'object' field on callNode
-  // For these, parent of nameNode is the call itself, so check the call's object field
-  const callNode = parent.parent ?? parent;
-
-  let receiver: SyntaxNode | null = null;
-
-  // Try standard field names used across grammars
-  receiver = parent.childForFieldName('object')       // TS/JS member_expression, Python attribute, PHP, Java
-    ?? parent.childForFieldName('value')               // Rust field_expression
-    ?? parent.childForFieldName('operand')             // Go selector_expression
-    ?? parent.childForFieldName('expression')          // C# member_access_expression
-    ?? parent.childForFieldName('argument');            // C++ field_expression
-
-  // Java method_invocation: 'object' field is on the callNode, not on nameNode's parent
-  if (!receiver && callNode.type === 'method_invocation') {
-    receiver = callNode.childForFieldName('object');
-  }
-
-  // PHP: member_call_expression has 'object' on the call node
-  if (!receiver && (callNode.type === 'member_call_expression' || callNode.type === 'nullsafe_member_call_expression')) {
-    receiver = callNode.childForFieldName('object');
-  }
-
-  // Ruby: call node has 'receiver' field
-  if (!receiver && parent.type === 'call') {
-    receiver = parent.childForFieldName('receiver');
-  }
-
-  // PHP scoped_call_expression (parent::method(), self::method()):
-  // nameNode's direct parent IS the scoped_call_expression (name is a direct child)
-  if (!receiver && (parent.type === 'scoped_call_expression' || callNode.type === 'scoped_call_expression')) {
-    const scopedCall = parent.type === 'scoped_call_expression' ? parent : callNode;
-    receiver = scopedCall.childForFieldName('scope');
-    // relative_scope wraps 'parent'/'self'/'static' — unwrap to get the keyword
-    if (receiver?.type === 'relative_scope') {
-      receiver = receiver.firstChild;
-    }
-  }
-
-  // C# null-conditional: user?.Save() → conditional_access_expression wraps member_binding_expression
-  if (!receiver && parent.type === 'member_binding_expression') {
-    const condAccess = parent.parent;
-    if (condAccess?.type === 'conditional_access_expression') {
-      receiver = condAccess.firstNamedChild;
-    }
-  }
-
-  // Kotlin/Swift: navigation_expression target is the first child
-  if (!receiver && parent.type === 'navigation_suffix') {
-    const navExpr = parent.parent;
-    if (navExpr?.type === 'navigation_expression') {
-      // First named child is the target (receiver)
-      for (const child of navExpr.children) {
-        if (child.isNamed && child !== parent) {
-          receiver = child;
-          break;
-        }
-      }
-    }
-  }
-
-  if (!receiver) return undefined;
-
-  // Only capture simple identifiers — refuse complex expressions
-  if (SIMPLE_RECEIVER_TYPES.has(receiver.type)) {
-    return receiver.text;
-  }
-
-  // Python super().method(): receiver is a call node `super()` — extract the function name
-  if (receiver.type === 'call') {
-    const func = receiver.childForFieldName('function');
-    if (func?.text === 'super') return 'super';
-  }
-
-  return undefined;
-};
-
 export const isVerboseIngestionEnabled = (): boolean => {
   const raw = process.env.GITNEXUS_VERBOSE;
   if (!raw) return false;
@@ -909,6 +230,6 @@ export const isVerboseIngestionEnabled = (): boolean => {
   return value === '1' || value === 'true' || value === 'yes';
 };
 
-
-
-
+// Re-exports for backward compatibility
+export * from './ast-helpers.js';
+export * from './call-analysis.js';
diff --git a/gitnexus/src/core/ingestion/workers/parse-worker.ts b/gitnexus/src/core/ingestion/workers/parse-worker.ts
index c74032ef5..fc31469d0 100644
--- a/gitnexus/src/core/ingestion/workers/parse-worker.ts
+++ b/gitnexus/src/core/ingestion/workers/parse-worker.ts
@@ -9,7 +9,6 @@ import CPP from 'tree-sitter-cpp';
 import CSharp from 'tree-sitter-c-sharp';
 import Go from 'tree-sitter-go';
 import Rust from 'tree-sitter-rust';
-import Kotlin from 'tree-sitter-kotlin';
 import PHP from 'tree-sitter-php';
 import Ruby from 'tree-sitter-ruby';
 import { createRequire } from 'node:module';
@@ -21,17 +20,25 @@ import { getTreeSitterBufferSize, TREE_SITTER_MAX_BUFFER } from '../constants.js
 const _require = createRequire(import.meta.url);
 let Swift: any = null;
 try { Swift = _require('tree-sitter-swift'); } catch {}
-import { 
+
+// tree-sitter-kotlin is an optionalDependency — may not be installed
+let Kotlin: any = null;
+try { Kotlin = _require('tree-sitter-kotlin'); } catch {}
+import {
   getLanguageFromFilename,
   FUNCTION_NODE_TYPES,
   extractFunctionName,
   isBuiltInOrNoise,
   getDefinitionNodeFromCaptures,
   findEnclosingClassId,
+  getLabelFromCaptures,
   extractMethodSignature,
   countCallArguments,
   inferCallForm,
-  extractReceiverName
+  extractReceiverName,
+  extractReceiverNode,
+  extractMixedChain,
+  type MixedChainStep,
 } from '../utils.js';
 import { buildTypeEnv } from '../type-env.js';
 import type { ConstructorBinding } from '../type-env.js';
@@ -39,9 +46,11 @@ import { isNodeExported } from '../export-detection.js';
 import { detectFrameworkFromAST } from '../framework-detection.js';
 import { typeConfigs } from '../type-extractors/index.js';
 import { generateId } from '../../../lib/utils.js';
-import { extractNamedBindings } from '../named-binding-extraction.js';
-import { appendKotlinWildcard } from '../resolvers/index.js';
+import { namedBindingExtractors, preprocessImportPath } from '../import-resolution.js';
+import type { NamedBinding } from '../import-resolution.js';
 import { callRouters } from '../call-routing.js';
+import { extractPropertyDeclaredType } from '../type-extractors/shared.js';
+import type { NodeLabel } from '../../graph/types.js';
 
 // ============================================================================
 // Types for serializable results
@@ -61,6 +70,7 @@ interface ParsedNode {
     astFrameworkReason?: string;
     description?: string;
     parameterCount?: number;
+    requiredParameterCount?: number;
     returnType?: string;
   };
 }
@@ -69,7 +79,7 @@ interface ParsedRelationship {
   id: string;
   sourceId: string;
   targetId: string;
-  type: 'DEFINES' | 'HAS_METHOD';
+  type: 'DEFINES' | 'HAS_METHOD' | 'HAS_PROPERTY';
   confidence: number;
   reason: string;
 }
@@ -78,9 +88,12 @@ interface ParsedSymbol {
   filePath: string;
   name: string;
   nodeId: string;
-  type: string;
+  type: NodeLabel;
   parameterCount?: number;
+  requiredParameterCount?: number;
+  parameterTypes?: string[];
   returnType?: string;
+  declaredType?: string;
   ownerId?: string;
 }
 
@@ -89,7 +102,7 @@ export interface ExtractedImport {
   rawImportPath: string;
   language: SupportedLanguages;
   /** Named bindings from the import (e.g., import {User as U} → [{local:'U', exported:'User'}]) */
-  namedBindings?: { local: string; exported: string }[];
+  namedBindings?: NamedBinding[];
 }
 
 export interface ExtractedCall {
@@ -104,6 +117,27 @@ export interface ExtractedCall {
   receiverName?: string;
   /** Resolved type name of the receiver (e.g., 'User' for user.save() when user: User) */
   receiverTypeName?: string;
+  /**
+   * Unified mixed chain when the receiver is a chain of field accesses and/or method calls.
+   * Steps are ordered base-first (innermost to outermost). Examples:
+   *   `svc.getUser().save()`        → chain=[{kind:'call',name:'getUser'}], receiverName='svc'
+   *   `user.address.save()`         → chain=[{kind:'field',name:'address'}], receiverName='user'
+   *   `svc.getUser().address.save()` → chain=[{kind:'call',name:'getUser'},{kind:'field',name:'address'}]
+   * Length is capped at MAX_CHAIN_DEPTH (3).
+   */
+  receiverMixedChain?: MixedChainStep[];
+}
+
+export interface ExtractedAssignment {
+  filePath: string;
+  /** generateId of enclosing function, or generateId('File', filePath) for top-level */
+  sourceId: string;
+  /** Receiver text (e.g., 'user' from user.address = value) */
+  receiverText: string;
+  /** Property name being written (e.g., 'address') */
+  propertyName: string;
+  /** Resolved type name of the receiver if available from TypeEnv */
+  receiverTypeName?: string;
 }
 
 export interface ExtractedHeritage {
@@ -131,15 +165,26 @@ export interface FileConstructorBindings {
   bindings: ConstructorBinding[];
 }
 
+/** File-scope type bindings from TypeEnv fixpoint — used for cross-file ExportedTypeMap. */
+export interface FileTypeEnvBindings {
+  filePath: string;
+  /** [varName, typeName] pairs from file scope (scope = '') */
+  bindings: [string, string][];
+}
+
 export interface ParseWorkerResult {
   nodes: ParsedNode[];
   relationships: ParsedRelationship[];
   symbols: ParsedSymbol[];
   imports: ExtractedImport[];
   calls: ExtractedCall[];
+  assignments: ExtractedAssignment[];
   heritage: ExtractedHeritage[];
   routes: ExtractedRoute[];
   constructorBindings: FileConstructorBindings[];
+  /** File-scope type bindings from TypeEnv fixpoint for exported symbol collection. */
+  typeEnvBindings: FileTypeEnvBindings[];
+  skippedLanguages: Record<string, number>;
   fileCount: number;
 }
 
@@ -165,12 +210,25 @@ const languageMap: Record<string, any> = {
   [SupportedLanguages.CSharp]: CSharp,
   [SupportedLanguages.Go]: Go,
   [SupportedLanguages.Rust]: Rust,
-  [SupportedLanguages.Kotlin]: Kotlin,
+  ...(Kotlin ? { [SupportedLanguages.Kotlin]: Kotlin } : {}),
   [SupportedLanguages.PHP]: PHP.php_only,
   [SupportedLanguages.Ruby]: Ruby,
   ...(Swift ? { [SupportedLanguages.Swift]: Swift } : {}),
 };
 
+/**
+ * Check if a language grammar is available in this worker.
+ * Duplicated from parser-loader.ts because workers can't import from the main thread.
+ * Extra filePath parameter needed to distinguish .tsx from .ts (different grammars
+ * under the same SupportedLanguages.TypeScript key).
+ */
+const isLanguageAvailable = (language: SupportedLanguages, filePath: string): boolean => {
+  const key = language === SupportedLanguages.TypeScript && filePath.endsWith('.tsx')
+    ? `${language}:tsx`
+    : language;
+  return key in languageMap && languageMap[key] != null;
+};
+
 const setLanguage = (language: SupportedLanguages, filePath: string): void => {
   const key = language === SupportedLanguages.TypeScript && filePath.endsWith('.tsx')
     ? `${language}:tsx`
@@ -201,39 +259,7 @@ const findEnclosingFunctionId = (node: any, filePath: string): string | null =>
   return null;
 };
 
-// ============================================================================
-// Label detection from capture map
-// ============================================================================
-
-const getLabelFromCaptures = (captureMap: Record<string, any>): string | null => {
-  // Skip imports (handled separately) and calls
-  if (captureMap['import'] || captureMap['call']) return null;
-  if (!captureMap['name']) return null;
-
-  if (captureMap['definition.function']) return 'Function';
-  if (captureMap['definition.class']) return 'Class';
-  if (captureMap['definition.interface']) return 'Interface';
-  if (captureMap['definition.method']) return 'Method';
-  if (captureMap['definition.struct']) return 'Struct';
-  if (captureMap['definition.enum']) return 'Enum';
-  if (captureMap['definition.namespace']) return 'Namespace';
-  if (captureMap['definition.module']) return 'Module';
-  if (captureMap['definition.trait']) return 'Trait';
-  if (captureMap['definition.impl']) return 'Impl';
-  if (captureMap['definition.type']) return 'TypeAlias';
-  if (captureMap['definition.const']) return 'Const';
-  if (captureMap['definition.static']) return 'Static';
-  if (captureMap['definition.typedef']) return 'Typedef';
-  if (captureMap['definition.macro']) return 'Macro';
-  if (captureMap['definition.union']) return 'Union';
-  if (captureMap['definition.property']) return 'Property';
-  if (captureMap['definition.record']) return 'Record';
-  if (captureMap['definition.delegate']) return 'Delegate';
-  if (captureMap['definition.annotation']) return 'Annotation';
-  if (captureMap['definition.constructor']) return 'Constructor';
-  if (captureMap['definition.template']) return 'Template';
-  return 'CodeElement';
-};
+// Label detection moved to shared getLabelFromCaptures in utils.ts
 
 // DEFINITION_CAPTURE_KEYS and getDefinitionNodeFromCaptures imported from ../utils.js
 
@@ -249,9 +275,12 @@ const processBatch = (files: ParseWorkerInput[], onProgress?: (filesProcessed: n
     symbols: [],
     imports: [],
     calls: [],
+    assignments: [],
     heritage: [],
     routes: [],
     constructorBindings: [],
+    typeEnvBindings: [],
+    skippedLanguages: {},
     fileCount: 0,
   };
 
@@ -302,21 +331,29 @@ const processBatch = (files: ParseWorkerInput[], onProgress?: (filesProcessed: n
 
     // Process regular files for this language
     if (regularFiles.length > 0) {
-      try {
-        setLanguage(language, regularFiles[0].path);
-        processFileGroup(regularFiles, language, queryString, result, onFileProcessed);
-      } catch {
-        // parser unavailable — skip this language group
+      if (isLanguageAvailable(language, regularFiles[0].path)) {
+        try {
+          setLanguage(language, regularFiles[0].path);
+          processFileGroup(regularFiles, language, queryString, result, onFileProcessed);
+        } catch {
+          // parser unavailable — skip this language group
+        }
+      } else {
+        result.skippedLanguages[language] = (result.skippedLanguages[language] || 0) + regularFiles.length;
       }
     }
 
     // Process tsx files separately (different grammar)
     if (tsxFiles.length > 0) {
-      try {
-        setLanguage(language, tsxFiles[0].path);
-        processFileGroup(tsxFiles, language, queryString, result, onFileProcessed);
-      } catch {
-        // parser unavailable — skip this language group
+      if (isLanguageAvailable(language, tsxFiles[0].path)) {
+        try {
+          setLanguage(language, tsxFiles[0].path);
+          processFileGroup(tsxFiles, language, queryString, result, onFileProcessed);
+        } catch {
+          // parser unavailable — skip this language group
+        }
+      } else {
+        result.skippedLanguages[language] = (result.skippedLanguages[language] || 0) + tsxFiles.length;
       }
     }
   }
@@ -835,15 +872,6 @@ const processFileGroup = (
     result.fileCount++;
     onFileProcessed?.();
 
-    // Build per-file type environment + constructor bindings in a single AST walk.
-    // Constructor bindings are verified against the SymbolTable in processCallsFromExtracted.
-    const typeEnv = buildTypeEnv(tree, language);
-    const callRouter = callRouters[language];
-
-    if (typeEnv.constructorBindings.length > 0) {
-      result.constructorBindings.push({ filePath: file.path, bindings: [...typeEnv.constructorBindings] });
-    }
-
     let matches;
     try {
       matches = query.matches(tree.rootNode);
@@ -852,6 +880,49 @@ const processFileGroup = (
       continue;
     }
 
+    // Pre-pass: extract heritage from query matches to build parentMap for buildTypeEnv.
+    // Heritage edges (EXTENDS/IMPLEMENTS) are created by heritage-processor which runs
+    // in PARALLEL with call-processor, so the graph edges don't exist when buildTypeEnv
+    // runs. This pre-pass makes parent class information available for type resolution.
+    const fileParentMap = new Map<string, string[]>();
+    for (const match of matches) {
+      const captureMap: Record<string, any> = {};
+      for (const c of match.captures) {
+        captureMap[c.name] = c.node;
+      }
+      if (captureMap['heritage.class'] && captureMap['heritage.extends']) {
+        const className: string = captureMap['heritage.class'].text;
+        const parentName: string = captureMap['heritage.extends'].text;
+        // Skip Go named fields (only anonymous fields are struct embedding)
+        const extendsNode = captureMap['heritage.extends'];
+        const fieldDecl = extendsNode.parent;
+        if (fieldDecl?.type === 'field_declaration' && fieldDecl.childForFieldName('name')) continue;
+        let parents = fileParentMap.get(className);
+        if (!parents) { parents = []; fileParentMap.set(className, parents); }
+        if (!parents.includes(parentName)) parents.push(parentName);
+      }
+    }
+
+    // Build per-file type environment + constructor bindings in a single AST walk.
+    // Constructor bindings are verified against the SymbolTable in processCallsFromExtracted.
+    const parentMap: ReadonlyMap<string, readonly string[]> = fileParentMap;
+    const typeEnv = buildTypeEnv(tree, language, { parentMap });
+    const callRouter = callRouters[language];
+
+    if (typeEnv.constructorBindings.length > 0) {
+      result.constructorBindings.push({ filePath: file.path, bindings: [...typeEnv.constructorBindings] });
+    }
+
+    // Extract file-scope bindings for ExportedTypeMap (closes worker/sequential quality gap).
+    // Sequential path uses collectExportedBindings(typeEnv) directly; worker path serializes
+    // these bindings so the main thread can merge them into ExportedTypeMap.
+    const fileScope = typeEnv.env.get('');
+    if (fileScope && fileScope.size > 0) {
+      const bindings: [string, string][] = [];
+      for (const [name, type] of fileScope) bindings.push([name, type]);
+      result.typeEnvBindings.push({ filePath: file.path, bindings });
+    }
+
     for (const match of matches) {
       const captureMap: Record<string, any> = {};
       for (const c of match.captures) {
@@ -860,10 +931,10 @@ const processFileGroup = (
 
       // Extract import paths before skipping
       if (captureMap['import'] && captureMap['import.source']) {
-        const rawImportPath = language === SupportedLanguages.Kotlin
-          ? appendKotlinWildcard(captureMap['import.source'].text.replace(/['"<>]/g, ''), captureMap['import'])
-          : captureMap['import.source'].text.replace(/['"<>]/g, '');
-        const namedBindings = extractNamedBindings(captureMap['import'], language);
+        const rawImportPath = preprocessImportPath(captureMap['import.source'].text, captureMap['import'], language);
+        if (!rawImportPath) continue;
+        const extractor = namedBindingExtractors[language];
+        const namedBindings = extractor ? extractor(captureMap['import']) : undefined;
         result.imports.push({
           filePath: file.path,
           rawImportPath,
@@ -873,6 +944,28 @@ const processFileGroup = (
         continue;
       }
 
+      // Extract assignment sites (field write access)
+      if (captureMap['assignment'] && captureMap['assignment.receiver'] && captureMap['assignment.property']) {
+        const receiverText = captureMap['assignment.receiver'].text;
+        const propertyName = captureMap['assignment.property'].text;
+        if (receiverText && propertyName) {
+          const srcId = findEnclosingFunctionId(captureMap['assignment'], file.path)
+            || generateId('File', file.path);
+          let receiverTypeName: string | undefined;
+          if (typeEnv) {
+            receiverTypeName = typeEnv.lookup(receiverText, captureMap['assignment']) ?? undefined;
+          }
+          result.assignments.push({
+            filePath: file.path,
+            sourceId: srcId,
+            receiverText,
+            propertyName,
+            ...(receiverTypeName ? { receiverTypeName } : {}),
+          });
+        }
+        if (!captureMap['call']) continue;
+      }
+
       // Extract call sites
       if (captureMap['call']) {
         const callNameNode = captureMap['call.name'];
@@ -928,6 +1021,7 @@ const processFileGroup = (
                   nodeId,
                   type: 'Property',
                   ...(propEnclosingClassId ? { ownerId: propEnclosingClassId } : {}),
+                  ...(item.declaredType ? { declaredType: item.declaredType } : {}),
                 });
                 const fileId = generateId('File', file.path);
                 const relId = generateId('DEFINES', `${fileId}->${nodeId}`);
@@ -941,10 +1035,10 @@ const processFileGroup = (
                 });
                 if (propEnclosingClassId) {
                   result.relationships.push({
-                    id: generateId('HAS_METHOD', `${propEnclosingClassId}->${nodeId}`),
+                    id: generateId('HAS_PROPERTY', `${propEnclosingClassId}->${nodeId}`),
                     sourceId: propEnclosingClassId,
                     targetId: nodeId,
-                    type: 'HAS_METHOD',
+                    type: 'HAS_PROPERTY',
                     confidence: 1.0,
                     reason: '',
                   });
@@ -961,8 +1055,29 @@ const processFileGroup = (
             const sourceId = findEnclosingFunctionId(callNode, file.path)
               || generateId('File', file.path);
             const callForm = inferCallForm(callNode, callNameNode);
-            const receiverName = callForm === 'member' ? extractReceiverName(callNameNode) : undefined;
-            const receiverTypeName = receiverName ? typeEnv.lookup(receiverName, callNode) : undefined;
+            let receiverName = callForm === 'member' ? extractReceiverName(callNameNode) : undefined;
+            let receiverTypeName = receiverName ? typeEnv.lookup(receiverName, callNode) : undefined;
+            let receiverMixedChain: MixedChainStep[] | undefined;
+
+            // When the receiver is a complex expression (call chain, field chain, or mixed),
+            // extractReceiverName returns undefined. Walk the receiver node to build a unified
+            // mixed chain for deferred resolution in processCallsFromExtracted.
+            if (callForm === 'member' && receiverName === undefined && !receiverTypeName) {
+              const receiverNode = extractReceiverNode(callNameNode);
+              if (receiverNode) {
+                const extracted = extractMixedChain(receiverNode);
+                if (extracted && extracted.chain.length > 0) {
+                  receiverMixedChain = extracted.chain;
+                  receiverName = extracted.baseReceiverName;
+                  // Try the type environment immediately for the base receiver
+                  // (covers explicitly-typed locals and annotated parameters).
+                  if (receiverName) {
+                    receiverTypeName = typeEnv.lookup(receiverName, callNode);
+                  }
+                }
+              }
+            }
+
             result.calls.push({
               filePath: file.path,
               calledName,
@@ -971,6 +1086,7 @@ const processFileGroup = (
               ...(callForm !== undefined ? { callForm } : {}),
               ...(receiverName !== undefined ? { receiverName } : {}),
               ...(receiverTypeName !== undefined ? { receiverTypeName } : {}),
+              ...(receiverMixedChain !== undefined ? { receiverMixedChain } : {}),
             });
           }
         }
@@ -1017,7 +1133,7 @@ const processFileGroup = (
         }
       }
 
-      const nodeLabel = getLabelFromCaptures(captureMap);
+      const nodeLabel = getLabelFromCaptures(captureMap, language);
       if (!nodeLabel) continue;
 
       const nameNode = captureMap['name'];
@@ -1042,19 +1158,30 @@ const processFileGroup = (
         : null;
 
       let parameterCount: number | undefined;
+      let requiredParameterCount: number | undefined;
+      let parameterTypes: string[] | undefined;
       let returnType: string | undefined;
+      let declaredType: string | undefined;
       if (nodeLabel === 'Function' || nodeLabel === 'Method' || nodeLabel === 'Constructor') {
         const sig = extractMethodSignature(definitionNode);
         parameterCount = sig.parameterCount;
+        requiredParameterCount = sig.requiredParameterCount;
+        parameterTypes = sig.parameterTypes;
         returnType = sig.returnType;
 
         // Language-specific return type fallback (e.g. Ruby YARD @return [Type])
-        if (!returnType && definitionNode) {
+        // Also upgrades uninformative AST types like PHP `array` with PHPDoc `@return User[]`
+        if ((!returnType || returnType === 'array' || returnType === 'iterable') && definitionNode) {
           const tc = typeConfigs[language as keyof typeof typeConfigs];
           if (tc?.extractReturnType) {
-            returnType = tc.extractReturnType(definitionNode);
+            const docReturn = tc.extractReturnType(definitionNode);
+            if (docReturn) returnType = docReturn;
           }
         }
+      } else if (nodeLabel === 'Property' && definitionNode) {
+        // Extract the declared type for property/field nodes.
+        // Walk the definition node for type annotation children.
+        declaredType = extractPropertyDeclaredType(definitionNode);
       }
 
       result.nodes.push({
@@ -1073,6 +1200,8 @@ const processFileGroup = (
           } : {}),
           ...(description !== undefined ? { description } : {}),
           ...(parameterCount !== undefined ? { parameterCount } : {}),
+          ...(requiredParameterCount !== undefined ? { requiredParameterCount } : {}),
+          ...(parameterTypes !== undefined ? { parameterTypes } : {}),
           ...(returnType !== undefined ? { returnType } : {}),
         },
       });
@@ -1088,7 +1217,10 @@ const processFileGroup = (
         nodeId,
         type: nodeLabel,
         ...(parameterCount !== undefined ? { parameterCount } : {}),
+        ...(requiredParameterCount !== undefined ? { requiredParameterCount } : {}),
+        ...(parameterTypes !== undefined ? { parameterTypes } : {}),
         ...(returnType !== undefined ? { returnType } : {}),
+        ...(declaredType !== undefined ? { declaredType } : {}),
         ...(enclosingClassId ? { ownerId: enclosingClassId } : {}),
       });
 
@@ -1103,13 +1235,14 @@ const processFileGroup = (
         reason: '',
       });
 
-      // ── HAS_METHOD: link method/constructor/property to enclosing class ──
+      // ── HAS_METHOD / HAS_PROPERTY: link member to enclosing class ──
       if (enclosingClassId) {
+        const memberEdgeType = nodeLabel === 'Property' ? 'HAS_PROPERTY' : 'HAS_METHOD';
         result.relationships.push({
-          id: generateId('HAS_METHOD', `${enclosingClassId}->${nodeId}`),
+          id: generateId(memberEdgeType, `${enclosingClassId}->${nodeId}`),
           sourceId: enclosingClassId,
           targetId: nodeId,
-          type: 'HAS_METHOD',
+          type: memberEdgeType,
           confidence: 1.0,
           reason: '',
         });
@@ -1131,7 +1264,7 @@ const processFileGroup = (
 /** Accumulated result across sub-batches */
 let accumulated: ParseWorkerResult = {
   nodes: [], relationships: [], symbols: [],
-  imports: [], calls: [], heritage: [], routes: [], constructorBindings: [], fileCount: 0,
+  imports: [], calls: [], assignments: [], heritage: [], routes: [], constructorBindings: [], typeEnvBindings: [], skippedLanguages: {}, fileCount: 0,
 };
 let cumulativeProcessed = 0;
 
@@ -1141,9 +1274,14 @@ const mergeResult = (target: ParseWorkerResult, src: ParseWorkerResult) => {
   target.symbols.push(...src.symbols);
   target.imports.push(...src.imports);
   target.calls.push(...src.calls);
+  target.assignments.push(...src.assignments);
   target.heritage.push(...src.heritage);
   target.routes.push(...src.routes);
   target.constructorBindings.push(...src.constructorBindings);
+  target.typeEnvBindings.push(...src.typeEnvBindings);
+  for (const [lang, count] of Object.entries(src.skippedLanguages)) {
+    target.skippedLanguages[lang] = (target.skippedLanguages[lang] || 0) + count;
+  }
   target.fileCount += src.fileCount;
 };
 
@@ -1165,7 +1303,7 @@ parentPort!.on('message', (msg: any) => {
     if (msg && msg.type === 'flush') {
       parentPort!.postMessage({ type: 'result', data: accumulated });
       // Reset for potential reuse
-      accumulated = { nodes: [], relationships: [], symbols: [], imports: [], calls: [], heritage: [], routes: [], constructorBindings: [], fileCount: 0 };
+      accumulated = { nodes: [], relationships: [], symbols: [], imports: [], calls: [], assignments: [], heritage: [], routes: [], constructorBindings: [], typeEnvBindings: [], skippedLanguages: {}, fileCount: 0 };
       cumulativeProcessed = 0;
       return;
     }
diff --git a/gitnexus/src/core/lbug/csv-generator.ts b/gitnexus/src/core/lbug/csv-generator.ts
index 9c99eb04b..e8f8a2fc8 100644
--- a/gitnexus/src/core/lbug/csv-generator.ts
+++ b/gitnexus/src/core/lbug/csv-generator.ts
@@ -238,6 +238,9 @@ export const streamAllCSVsToDisk = async (
   const communityWriter = new BufferedCSVWriter(path.join(csvDir, 'community.csv'), 'id,label,heuristicLabel,keywords,description,enrichedBy,cohesion,symbolCount');
   const processWriter = new BufferedCSVWriter(path.join(csvDir, 'process.csv'), 'id,label,heuristicLabel,processType,stepCount,communities,entryPointId,terminalId');
 
+  // Section nodes have an extra 'level' column
+  const sectionWriter = new BufferedCSVWriter(path.join(csvDir, 'section.csv'), 'id,name,filePath,startLine,endLine,level,content,description');
+
   // Multi-language node types share the same CSV shape (no isExported column)
   const multiLangHeader = 'id,name,filePath,startLine,endLine,content,description';
   const MULTI_LANG_TYPES = ['Struct', 'Enum', 'Macro', 'Typedef', 'Union', 'Namespace', 'Trait', 'Impl',
@@ -324,6 +327,20 @@ export const streamAllCSVsToDisk = async (
         ].join(','));
         break;
       }
+      case 'Section': {
+        const content = await extractContent(node, contentCache);
+        await sectionWriter.addRow([
+          escapeCSVField(node.id),
+          escapeCSVField(node.properties.name || ''),
+          escapeCSVField(node.properties.filePath || ''),
+          escapeCSVNumber(node.properties.startLine, -1),
+          escapeCSVNumber(node.properties.endLine, -1),
+          escapeCSVNumber((node.properties as any).level, 1),
+          escapeCSVField(content),
+          escapeCSVField((node.properties as any).description || ''),
+        ].join(','));
+        break;
+      }
       default: {
         // Code element nodes (Function, Class, Interface, CodeElement)
         const writer = codeWriterMap[node.label];
@@ -361,7 +378,7 @@ export const streamAllCSVsToDisk = async (
   }
 
   // Finish all node writers
-  const allWriters = [fileWriter, folderWriter, functionWriter, classWriter, interfaceWriter, methodWriter, codeElemWriter, communityWriter, processWriter, ...multiLangWriters.values()];
+  const allWriters = [fileWriter, folderWriter, functionWriter, classWriter, interfaceWriter, methodWriter, codeElemWriter, communityWriter, processWriter, sectionWriter, ...multiLangWriters.values()];
   await Promise.all(allWriters.map(w => w.finish()));
 
   // --- Stream relationship CSV ---
@@ -387,6 +404,7 @@ export const streamAllCSVsToDisk = async (
     ['Interface', interfaceWriter], ['Method', methodWriter],
     ['CodeElement', codeElemWriter],
     ['Community', communityWriter], ['Process', processWriter],
+    ['Section' as NodeTableName, sectionWriter],
     ...Array.from(multiLangWriters.entries()).map(([name, w]) => [name as NodeTableName, w] as [NodeTableName, BufferedCSVWriter]),
   ];
   for (const [name, writer] of tableMap) {
diff --git a/gitnexus/src/core/lbug/lbug-adapter.ts b/gitnexus/src/core/lbug/lbug-adapter.ts
index e46c03c58..ff8345d06 100644
--- a/gitnexus/src/core/lbug/lbug-adapter.ts
+++ b/gitnexus/src/core/lbug/lbug-adapter.ts
@@ -18,6 +18,9 @@ let conn: lbug.Connection | null = null;
 let currentDbPath: string | null = null;
 let ftsLoaded = false;
 
+/** Expose the current Database for pool adapter reuse in tests. */
+export const getDatabase = (): lbug.Database | null => db;
+
 // Global session lock for operations that touch module-level lbug globals.
 // This guarantees no DB switch can happen while an operation is running.
 let sessionLock: Promise<void> = Promise.resolve();
@@ -333,6 +336,9 @@ const getCopyQuery = (table: NodeTableName, filePath: string): string => {
   if (table === 'Process') {
     return `COPY ${t}(id, label, heuristicLabel, processType, stepCount, communities, entryPointId, terminalId) FROM "${filePath}" ${COPY_CSV_OPTS}`;
   }
+  if (table === 'Section') {
+    return `COPY ${t}(id, name, filePath, startLine, endLine, level, content, description) FROM "${filePath}" ${COPY_CSV_OPTS}`;
+  }
   if (table === 'Method') {
     return `COPY ${t}(id, name, filePath, startLine, endLine, isExported, content, description, parameterCount, returnType) FROM "${filePath}" ${COPY_CSV_OPTS}`;
   }
@@ -377,6 +383,9 @@ export const insertNodeToLbug = async (
       query = `CREATE (n:File {id: ${escapeValue(properties.id)}, name: ${escapeValue(properties.name)}, filePath: ${escapeValue(properties.filePath)}, content: ${escapeValue(properties.content || '')}})`;
     } else if (label === 'Folder') {
       query = `CREATE (n:Folder {id: ${escapeValue(properties.id)}, name: ${escapeValue(properties.name)}, filePath: ${escapeValue(properties.filePath)}})`;
+    } else if (label === 'Section') {
+      const descPart = properties.description ? `, description: ${escapeValue(properties.description)}` : '';
+      query = `CREATE (n:Section {id: ${escapeValue(properties.id)}, name: ${escapeValue(properties.name)}, filePath: ${escapeValue(properties.filePath)}, startLine: ${properties.startLine || 0}, endLine: ${properties.endLine || 0}, level: ${properties.level || 1}, content: ${escapeValue(properties.content || '')}${descPart}})`;
     } else if (TABLES_WITH_EXPORTED.has(label)) {
       const descPart = properties.description ? `, description: ${escapeValue(properties.description)}` : '';
       query = `CREATE (n:${t} {id: ${escapeValue(properties.id)}, name: ${escapeValue(properties.name)}, filePath: ${escapeValue(properties.filePath)}, startLine: ${properties.startLine || 0}, endLine: ${properties.endLine || 0}, isExported: ${!!properties.isExported}, content: ${escapeValue(properties.content || '')}${descPart}})`;
@@ -448,6 +457,9 @@ export const batchInsertNodesToLbug = async (
           query = `MERGE (n:File {id: ${escapeValue(properties.id)}}) SET n.name = ${escapeValue(properties.name)}, n.filePath = ${escapeValue(properties.filePath)}, n.content = ${escapeValue(properties.content || '')}`;
         } else if (label === 'Folder') {
           query = `MERGE (n:Folder {id: ${escapeValue(properties.id)}}) SET n.name = ${escapeValue(properties.name)}, n.filePath = ${escapeValue(properties.filePath)}`;
+        } else if (label === 'Section') {
+          const descPart = properties.description ? `, n.description = ${escapeValue(properties.description)}` : '';
+          query = `MERGE (n:Section {id: ${escapeValue(properties.id)}}) SET n.name = ${escapeValue(properties.name)}, n.filePath = ${escapeValue(properties.filePath)}, n.startLine = ${properties.startLine || 0}, n.endLine = ${properties.endLine || 0}, n.level = ${properties.level || 1}, n.content = ${escapeValue(properties.content || '')}${descPart}`;
         } else if (TABLES_WITH_EXPORTED.has(label)) {
           const descPart = properties.description ? `, n.description = ${escapeValue(properties.description)}` : '';
           query = `MERGE (n:${t} {id: ${escapeValue(properties.id)}}) SET n.name = ${escapeValue(properties.name)}, n.filePath = ${escapeValue(properties.filePath)}, n.startLine = ${properties.startLine || 0}, n.endLine = ${properties.endLine || 0}, n.isExported = ${!!properties.isExported}, n.content = ${escapeValue(properties.content || '')}${descPart}`;
diff --git a/gitnexus/src/core/lbug/schema.ts b/gitnexus/src/core/lbug/schema.ts
index 11f55ae7b..a47aa9674 100644
--- a/gitnexus/src/core/lbug/schema.ts
+++ b/gitnexus/src/core/lbug/schema.ts
@@ -13,7 +13,7 @@
 // NODE TABLE NAMES
 // ============================================================================
 export const NODE_TABLES = [
-  'File', 'Folder', 'Function', 'Class', 'Interface', 'Method', 'CodeElement', 'Community', 'Process',
+  'File', 'Folder', 'Function', 'Class', 'Interface', 'Method', 'CodeElement', 'Community', 'Process', 'Section',
   // Multi-language support
   'Struct', 'Enum', 'Macro', 'Typedef', 'Union', 'Namespace', 'Trait', 'Impl',
   'TypeAlias', 'Const', 'Static', 'Property', 'Record', 'Delegate', 'Annotation', 'Constructor', 'Template', 'Module'
@@ -26,7 +26,7 @@ export type NodeTableName = typeof NODE_TABLES[number];
 export const REL_TABLE_NAME = 'CodeRelation';
 
 // Valid relation types
-export const REL_TYPES = ['CONTAINS', 'DEFINES', 'IMPORTS', 'CALLS', 'EXTENDS', 'IMPLEMENTS', 'HAS_METHOD', 'OVERRIDES', 'MEMBER_OF', 'STEP_IN_PROCESS'] as const;
+export const REL_TYPES = ['CONTAINS', 'DEFINES', 'IMPORTS', 'CALLS', 'EXTENDS', 'IMPLEMENTS', 'HAS_METHOD', 'HAS_PROPERTY', 'ACCESSES', 'OVERRIDES', 'MEMBER_OF', 'STEP_IN_PROCESS'] as const;
 export type RelType = typeof REL_TYPES[number];
 
 // ============================================================================
@@ -192,6 +192,19 @@ export const ANNOTATION_SCHEMA = CODE_ELEMENT_BASE('Annotation');
 export const CONSTRUCTOR_SCHEMA = CODE_ELEMENT_BASE('Constructor');
 export const TEMPLATE_SCHEMA = CODE_ELEMENT_BASE('Template');
 export const MODULE_SCHEMA = CODE_ELEMENT_BASE('Module');
+// Markdown heading sections
+export const SECTION_SCHEMA = `
+CREATE NODE TABLE Section (
+  id STRING,
+  name STRING,
+  filePath STRING,
+  startLine INT64,
+  endLine INT64,
+  level INT64,
+  content STRING,
+  description STRING,
+  PRIMARY KEY (id)
+)`;
 
 // ============================================================================
 // RELATION TABLE SCHEMA
@@ -225,6 +238,7 @@ CREATE REL TABLE ${REL_TABLE_NAME} (
   FROM File TO \`Constructor\`,
   FROM File TO \`Template\`,
   FROM File TO \`Module\`,
+  FROM File TO Section,
   FROM Folder TO Folder,
   FROM Folder TO File,
   FROM Function TO Function,
@@ -289,6 +303,8 @@ CREATE REL TABLE ${REL_TABLE_NAME} (
   FROM \`Template\` TO Interface,
   FROM \`Template\` TO \`Constructor\`,
   FROM \`Module\` TO \`Module\`,
+  FROM Section TO Section,
+  FROM Section TO File,
   FROM CodeElement TO Community,
   FROM Interface TO Community,
   FROM Interface TO Function,
@@ -447,6 +463,8 @@ export const NODE_SCHEMA_QUERIES = [
   CONSTRUCTOR_SCHEMA,
   TEMPLATE_SCHEMA,
   MODULE_SCHEMA,
+  // Markdown support
+  SECTION_SCHEMA,
 ];
 
 export const REL_SCHEMA_QUERIES = [
diff --git a/gitnexus/src/core/tree-sitter/parser-loader.ts b/gitnexus/src/core/tree-sitter/parser-loader.ts
index c8cac82af..f7740ab6c 100644
--- a/gitnexus/src/core/tree-sitter/parser-loader.ts
+++ b/gitnexus/src/core/tree-sitter/parser-loader.ts
@@ -8,7 +8,6 @@ import CPP from 'tree-sitter-cpp';
 import CSharp from 'tree-sitter-c-sharp';
 import Go from 'tree-sitter-go';
 import Rust from 'tree-sitter-rust';
-import Kotlin from 'tree-sitter-kotlin';
 import PHP from 'tree-sitter-php';
 import Ruby from 'tree-sitter-ruby';
 import { createRequire } from 'node:module';
@@ -19,6 +18,10 @@ const _require = createRequire(import.meta.url);
 let Swift: any = null;
 try { Swift = _require('tree-sitter-swift'); } catch {}
 
+// tree-sitter-kotlin is an optionalDependency — may not be installed
+let Kotlin: any = null;
+try { Kotlin = _require('tree-sitter-kotlin'); } catch {}
+
 let parser: Parser | null = null;
 
 const languageMap: Record<string, any> = {
@@ -32,7 +35,7 @@ const languageMap: Record<string, any> = {
   [SupportedLanguages.CSharp]: CSharp,
   [SupportedLanguages.Go]: Go,
   [SupportedLanguages.Rust]: Rust,
-  [SupportedLanguages.Kotlin]: Kotlin,
+  ...(Kotlin ? { [SupportedLanguages.Kotlin]: Kotlin } : {}),
   [SupportedLanguages.PHP]: PHP.php_only,
   [SupportedLanguages.Ruby]: Ruby,
   ...(Swift ? { [SupportedLanguages.Swift]: Swift } : {}),
diff --git a/gitnexus/src/mcp/core/lbug-adapter.ts b/gitnexus/src/mcp/core/lbug-adapter.ts
index 1780675af..0de368d73 100644
--- a/gitnexus/src/mcp/core/lbug-adapter.ts
+++ b/gitnexus/src/mcp/core/lbug-adapter.ts
@@ -27,6 +27,8 @@ interface PoolEntry {
   waiters: Array<(conn: lbug.Connection) => void>;
   lastUsed: number;
   dbPath: string;
+  /** Set to true when the pool entry is closed — checkin will close orphaned connections */
+  closed: boolean;
 }
 
 const pool = new Map<string, PoolEntry>();
@@ -40,6 +42,8 @@ interface SharedDB {
   db: lbug.Database;
   refCount: number;
   ftsLoaded: boolean;
+  /** When true, closeOne skips db.close() — the Database is owned externally. */
+  external?: boolean;
 }
 const dbCache = new Map<string, SharedDB>();
 
@@ -49,14 +53,14 @@ const MAX_POOL_SIZE = 5;
 const IDLE_TIMEOUT_MS = 5 * 60 * 1000; // 5 minutes
 /** Max connections per repo (caps concurrent queries per repo) */
 const MAX_CONNS_PER_REPO = 8;
-/** Connections created eagerly on init */
-const INITIAL_CONNS_PER_REPO = 2;
 
 let idleTimer: ReturnType<typeof setInterval> | null = null;
 
 /** Saved real stdout.write — used to silence LadybugDB native output without race conditions */
-const realStdoutWrite = process.stdout.write.bind(process.stdout);
+export const realStdoutWrite = process.stdout.write.bind(process.stdout);
 let stdoutSilenceCount = 0;
+/** True while pre-warming connections — prevents watchdog from prematurely restoring stdout */
+let preWarmActive = false;
 
 /**
  * Start the idle cleanup timer (runs every 60s)
@@ -96,21 +100,47 @@ function evictLRU(): void {
 }
 
 /**
- * Remove a repo from the pool and release its shared Database ref.
- *
- * LadybugDB's native .closeSync() triggers N-API destructor hooks that
- * segfault on Linux/macOS.  Pool databases are opened read-only, so
- * there is no WAL to flush — just deleting the pool entry and letting
- * the GC (or process exit) reclaim native resources is safe.
+ * Remove a repo from the pool, close its connections, and release its
+ * shared Database ref.  Only closes the Database when no other repoIds
+ * reference it (refCount === 0).
  */
 function closeOne(repoId: string): void {
   const entry = pool.get(repoId);
-  if (entry) {
-    const shared = dbCache.get(entry.dbPath);
-    if (shared && shared.refCount > 0) {
-      shared.refCount--;
+  if (!entry) return;
+
+  entry.closed = true;
+
+  // Close available connections — fire-and-forget with .catch() to prevent
+  // unhandled rejections.  Native close() returns Promise<void> but can crash
+  // the N-API destructor on macOS/Windows; deferring to process exit lets
+  // dangerouslyIgnoreUnhandledErrors absorb the crash.
+  for (const conn of entry.available) {
+    conn.close().catch(() => {});
+  }
+  entry.available.length = 0;
+
+  // Checked-out connections can't be closed here — they're in-flight.
+  // The checkin() function detects entry.closed and closes them on return.
+
+  // Only close the Database when no other repoIds reference it.
+  // External databases (injected via initLbugWithDb) are never closed here —
+  // the core adapter owns them and handles their lifecycle.
+  const shared = dbCache.get(entry.dbPath);
+  if (shared) {
+    shared.refCount--;
+    if (shared.refCount === 0) {
+      if (shared.external) {
+        // External databases are owned by the core adapter — don't close
+        // or remove from cache.  Keep the entry so future initLbug() calls
+        // for the same dbPath reuse it instead of hitting a file lock.
+        shared.refCount = 0;
+      } else {
+        shared.db.close().catch(() => {});
+        dbCache.delete(entry.dbPath);
+      }
     }
   }
+
   pool.delete(repoId);
 }
 
@@ -118,6 +148,8 @@ function closeOne(repoId: string): void {
  * Create a new Connection from a repo's Database.
  * Silences stdout to prevent native module output from corrupting MCP stdio.
  */
+let activeQueryCount = 0;
+
 function silenceStdout(): void {
   if (stdoutSilenceCount++ === 0) {
     process.stdout.write = (() => true) as any;
@@ -131,6 +163,17 @@ function restoreStdout(): void {
   }
 }
 
+// Safety watchdog: restore stdout if it gets stuck silenced (e.g. native crash
+// inside createConnection before restoreStdout runs).
+// Exempts active queries and pre-warm — these legitimately hold silence for
+// longer than 1 second (queries can take up to QUERY_TIMEOUT_MS = 30s).
+setInterval(() => {
+  if (stdoutSilenceCount > 0 && !preWarmActive && activeQueryCount === 0) {
+    stdoutSilenceCount = 0;
+    process.stdout.write = realStdoutWrite;
+  }
+}, 1000).unref();
+
 function createConnection(db: lbug.Database): lbug.Connection {
   silenceStdout();
   try {
@@ -148,9 +191,15 @@ const WAITER_TIMEOUT_MS = 15_000;
 const LOCK_RETRY_ATTEMPTS = 3;
 const LOCK_RETRY_DELAY_MS = 2000;
 
+/** Deduplicates concurrent initLbug calls for the same repoId */
+const initPromises = new Map<string, Promise<void>>();
+
 /**
  * Initialize (or reuse) a Database + connection pool for a specific repo.
  * Retries on lock errors (e.g., when `gitnexus analyze` is running).
+ *
+ * Concurrent calls for the same repoId are deduplicated — the second caller
+ * awaits the first's in-progress init rather than starting a redundant one.
  */
 export const initLbug = async (repoId: string, dbPath: string): Promise<void> => {
   const existing = pool.get(repoId);
@@ -159,6 +208,27 @@ export const initLbug = async (repoId: string, dbPath: string): Promise<void> =>
     return;
   }
 
+  // Deduplicate concurrent init calls for the same repoId —
+  // prevents double-init race when multiple parallel tool calls
+  // trigger initialization for the same repo simultaneously.
+  const pending = initPromises.get(repoId);
+  if (pending) return pending;
+
+  const promise = doInitLbug(repoId, dbPath);
+  initPromises.set(repoId, promise);
+  try {
+    await promise;
+  } finally {
+    initPromises.delete(repoId);
+  }
+};
+
+/**
+ * Internal init — creates DB, pre-warms connections, loads FTS, then registers pool.
+ * Pool entry is registered LAST so concurrent executeQuery calls see either
+ * "not initialized" (and throw) or a fully ready pool — never a half-built one.
+ */
+async function doInitLbug(repoId: string, dbPath: string): Promise<void> {
   // Check if database exists
   try {
     await fs.stat(dbPath);
@@ -210,16 +280,22 @@ export const initLbug = async (repoId: string, dbPath: string): Promise<void> =>
   shared.refCount++;
   const db = shared.db;
 
-  // Pre-create a small pool of connections
+  // Pre-create the full pool upfront so createConnection() (which silences
+  // stdout) is never called lazily during active query execution.
+  // Mark preWarmActive so the watchdog timer doesn't interfere.
+  preWarmActive = true;
   const available: lbug.Connection[] = [];
-  for (let i = 0; i < INITIAL_CONNS_PER_REPO; i++) {
-    available.push(createConnection(db));
+  try {
+    for (let i = 0; i < MAX_CONNS_PER_REPO; i++) {
+      available.push(createConnection(db));
+    }
+  } finally {
+    preWarmActive = false;
   }
 
-  pool.set(repoId, { db, available, checkedOut: 0, waiters: [], lastUsed: Date.now(), dbPath });
-  ensureIdleTimer();
-
-  // Load FTS extension once per shared Database
+  // Load FTS extension once per shared Database.
+  // Done BEFORE pool registration so no concurrent checkout can grab
+  // the connection while the async FTS load is in progress.
   if (!shared.ftsLoaded) {
     try {
       await available[0].query('LOAD EXTENSION fts');
@@ -228,7 +304,75 @@ export const initLbug = async (repoId: string, dbPath: string): Promise<void> =>
       // Extension may not be installed — FTS queries will fail gracefully
     }
   }
-};
+
+  // Register pool entry only after all connections are pre-warmed and FTS is
+  // loaded.  Concurrent executeQuery calls see either "not initialized"
+  // (and throw cleanly) or a fully ready pool — never a half-built one.
+  pool.set(repoId, { db, available, checkedOut: 0, waiters: [], lastUsed: Date.now(), dbPath, closed: false });
+  ensureIdleTimer();
+}
+
+/**
+ * Initialize a pool entry from a pre-existing Database object.
+ *
+ * Used in tests to avoid the writable→close→read-only cycle that crashes
+ * on macOS due to N-API destructor segfaults.  The pool adapter reuses
+ * the core adapter's writable Database instead of opening a new read-only one.
+ *
+ * The Database is registered in the shared dbCache so closeOne() decrements
+ * the refCount correctly.  If the Database is already cached (e.g. another
+ * repoId already injected it), the existing entry is reused.
+ */
+export async function initLbugWithDb(
+  repoId: string,
+  existingDb: lbug.Database,
+  dbPath: string,
+): Promise<void> {
+  const existing = pool.get(repoId);
+  if (existing) {
+    existing.lastUsed = Date.now();
+    return;
+  }
+
+  // Register in dbCache with external: true so other initLbug() calls
+  // for the same dbPath reuse this Database instead of trying to open
+  // a new one (which would fail with a file lock error).
+  // closeOne() respects the external flag and skips db.close().
+  let shared = dbCache.get(dbPath);
+  if (!shared) {
+    shared = { db: existingDb, refCount: 0, ftsLoaded: false, external: true };
+    dbCache.set(dbPath, shared);
+  }
+  shared.refCount++;
+
+  const available: lbug.Connection[] = [];
+  preWarmActive = true;
+  try {
+    for (let i = 0; i < MAX_CONNS_PER_REPO; i++) {
+      available.push(createConnection(existingDb));
+    }
+  } finally {
+    preWarmActive = false;
+  }
+
+  // Load FTS extension if not already loaded on this Database
+  try {
+    await available[0].query('LOAD EXTENSION fts');
+  } catch {
+    // Extension may already be loaded or not installed
+  }
+
+  pool.set(repoId, { 
+    db: existingDb,
+    available,
+    checkedOut: 0,
+    waiters: [],
+    lastUsed: Date.now(),
+    dbPath,
+    closed: false 
+  });
+  ensureIdleTimer();
+}
 
 /**
  * Checkout a connection from the pool.
@@ -242,11 +386,16 @@ function checkout(entry: PoolEntry): Promise<lbug.Connection> {
     return Promise.resolve(entry.available.pop()!);
   }
 
-  // Grow the pool if under the cap
+  // Pool was pre-warmed to MAX_CONNS_PER_REPO during init.  If we're here
+  // with fewer total connections, something leaked — surface the bug rather
+  // than silently creating a connection (which would silence stdout mid-query).
   const totalConns = entry.available.length + entry.checkedOut;
   if (totalConns < MAX_CONNS_PER_REPO) {
-    entry.checkedOut++;
-    return Promise.resolve(createConnection(entry.db));
+    throw new Error(
+      `Connection pool integrity error: expected ${MAX_CONNS_PER_REPO} ` +
+      `connections but found ${totalConns} (${entry.available.length} available, ` +
+      `${entry.checkedOut} checked out)`
+    );
   }
 
   // At capacity — queue the caller with a timeout.
@@ -266,10 +415,17 @@ function checkout(entry: PoolEntry): Promise<lbug.Connection> {
 
 /**
  * Return a connection to the pool after use.
+ * If the pool entry was closed while the connection was checked out (e.g.
+ * LRU eviction), close the orphaned connection instead of returning it.
  * If there are queued waiters, hand the connection directly to the next one
  * instead of putting it back in the available array (avoids race conditions).
  */
 function checkin(entry: PoolEntry, conn: lbug.Connection): void {
+  if (entry.closed) {
+    // Pool entry was deleted during checkout — close the orphaned connection
+    conn.close().catch(() => {});
+    return;
+  }
   if (entry.waiters.length > 0) {
     // Hand directly to the next waiter — no intermediate available state
     const waiter = entry.waiters.shift()!;
@@ -299,15 +455,23 @@ export const executeQuery = async (repoId: string, cypher: string): Promise<any[
     throw new Error(`LadybugDB not initialized for repo "${repoId}". Call initLbug first.`);
   }
 
+  if (isWriteQuery(cypher)) {
+    throw new Error('Write operations are not allowed. The pool adapter is read-only.');
+  }
+
   entry.lastUsed = Date.now();
 
   const conn = await checkout(entry);
+  silenceStdout();
+  activeQueryCount++;
   try {
     const queryResult = await withTimeout(conn.query(cypher), QUERY_TIMEOUT_MS, 'Query');
     const result = Array.isArray(queryResult) ? queryResult[0] : queryResult;
     const rows = await result.getAll();
     return rows;
   } finally {
+    activeQueryCount--;
+    restoreStdout();
     checkin(entry, conn);
   }
 };
@@ -329,6 +493,8 @@ export const executeParameterized = async (
   entry.lastUsed = Date.now();
 
   const conn = await checkout(entry);
+  silenceStdout();
+  activeQueryCount++;
   try {
     const stmt = await withTimeout(conn.prepare(cypher), QUERY_TIMEOUT_MS, 'Prepare');
     if (!stmt.isSuccess()) {
@@ -340,6 +506,8 @@ export const executeParameterized = async (
     const rows = await result.getAll();
     return rows;
   } finally {
+    activeQueryCount--;
+    restoreStdout();
     checkin(entry, conn);
   }
 };
@@ -370,3 +538,11 @@ export const closeLbug = async (repoId?: string): Promise<void> => {
  * Check if a specific repo's pool is active
  */
 export const isLbugReady = (repoId: string): boolean => pool.has(repoId);
+
+/** Regex to detect write operations in user-supplied Cypher queries */
+export const CYPHER_WRITE_RE = /\b(CREATE|DELETE|SET|MERGE|REMOVE|DROP|ALTER|COPY|DETACH)\b/i;
+
+/** Check if a Cypher query contains write operations */
+export function isWriteQuery(query: string): boolean {
+  return CYPHER_WRITE_RE.test(query);
+}
diff --git a/gitnexus/src/mcp/local/local-backend.ts b/gitnexus/src/mcp/local/local-backend.ts
index 957be8eab..40c9e5eca 100644
--- a/gitnexus/src/mcp/local/local-backend.ts
+++ b/gitnexus/src/mcp/local/local-backend.ts
@@ -47,7 +47,7 @@ export const VALID_NODE_LABELS = new Set([
 ]);
 
 /** Valid relation types for impact analysis filtering */
-export const VALID_RELATION_TYPES = new Set(['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS']);
+export const VALID_RELATION_TYPES = new Set(['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS', 'HAS_METHOD', 'HAS_PROPERTY', 'OVERRIDES', 'ACCESSES']);
 
 /** Regex to detect write operations in user-supplied Cypher queries */
 export const CYPHER_WRITE_RE = /\b(CREATE|DELETE|SET|MERGE|REMOVE|DROP|ALTER|COPY|DETACH)\b/i;
@@ -88,6 +88,8 @@ export class LocalBackend {
   private repos: Map<string, RepoHandle> = new Map();
   private contextCache: Map<string, CodebaseContext> = new Map();
   private initializedRepos: Set<string> = new Set();
+  private reinitPromises: Map<string, Promise<void>> = new Map();
+  private lastStalenessCheck: Map<string, number> = new Map();
 
   // ─── Initialization ──────────────────────────────────────────────
 
@@ -246,12 +248,51 @@ export class LocalBackend {
   // ─── Lazy LadybugDB Init ────────────────────────────────────────────
 
   private async ensureInitialized(repoId: string): Promise<void> {
-    // Always check the actual pool — the idle timer may have evicted the connection
-    if (this.initializedRepos.has(repoId) && isLbugReady(repoId)) return;
+    // If a reinit is already in progress for this repo, wait for it
+    const pending = this.reinitPromises.get(repoId);
+    if (pending) return pending;
 
     const handle = this.repos.get(repoId);
     if (!handle) throw new Error(`Unknown repo: ${repoId}`);
 
+    // Check if the index was rebuilt since we opened the connection (#297).
+    // Throttle staleness checks to at most once per 5 seconds per repo to
+    // avoid an fs.readFile round-trip on every tool invocation.
+    if (this.initializedRepos.has(repoId) && isLbugReady(repoId)) {
+      const now = Date.now();
+      const lastCheck = this.lastStalenessCheck.get(repoId) ?? 0;
+      if (now - lastCheck < 5000) return; // Checked recently — skip
+
+      this.lastStalenessCheck.set(repoId, now);
+      try {
+        const metaPath = path.join(handle.storagePath, 'meta.json');
+        const metaRaw = await fs.readFile(metaPath, 'utf-8');
+        const meta = JSON.parse(metaRaw);
+        if (meta.indexedAt && meta.indexedAt !== handle.indexedAt) {
+          // Index was rebuilt — close stale connection and re-init.
+          // Wrap in reinitPromises to prevent TOCTOU race where concurrent
+          // callers both detect staleness and double-close the pool.
+          const reinit = (async () => {
+            try {
+              await closeLbug(repoId);
+              this.initializedRepos.delete(repoId);
+              handle.indexedAt = meta.indexedAt;
+              await initLbug(repoId, handle.lbugPath);
+              this.initializedRepos.add(repoId);
+            } finally {
+              this.reinitPromises.delete(repoId);
+            }
+          })();
+          this.reinitPromises.set(repoId, reinit);
+          return reinit;
+        } else {
+          return; // Pool is current
+        }
+      } catch {
+        return; // Can't read meta — assume pool is fine
+      }
+    }
+
     try {
       await initLbug(repoId, handle.lbugPath);
       this.initializedRepos.add(repoId);
@@ -898,7 +939,7 @@ export class LocalBackend {
     // Categorized incoming refs
     const incomingRows = await executeParameterized(repo.id, `
       MATCH (caller)-[r:CodeRelation]->(n {id: $symId})
-      WHERE r.type IN ['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS']
+      WHERE r.type IN ['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS', 'HAS_METHOD', 'HAS_PROPERTY', 'OVERRIDES', 'ACCESSES']
       RETURN r.type AS relType, caller.id AS uid, caller.name AS name, caller.filePath AS filePath, labels(caller)[0] AS kind
       LIMIT 30
     `, { symId });
@@ -906,7 +947,7 @@ export class LocalBackend {
     // Categorized outgoing refs
     const outgoingRows = await executeParameterized(repo.id, `
       MATCH (n {id: $symId})-[r:CodeRelation]->(target)
-      WHERE r.type IN ['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS']
+      WHERE r.type IN ['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS', 'HAS_METHOD', 'HAS_PROPERTY', 'OVERRIDES', 'ACCESSES']
       RETURN r.type AS relType, target.id AS uid, target.name AS name, target.filePath AS filePath, labels(target)[0] AS kind
       LIMIT 30
     `, { symId });
@@ -1329,6 +1370,29 @@ export class LocalBackend {
     relationTypes?: string[];
     includeTests?: boolean;
     minConfidence?: number;
+  }): Promise<any> {
+    try {
+      return await this._impactImpl(repo, params);
+    } catch (err: any) {
+      // Return structured error instead of crashing (#321)
+      return {
+        error: (err instanceof Error ? err.message : String(err)) || 'Impact analysis failed',
+        target: { name: params.target },
+        direction: params.direction,
+        impactedCount: 0,
+        risk: 'UNKNOWN',
+        suggestion: 'The graph query failed — try gitnexus context <symbol> as a fallback',
+      };
+    }
+  }
+
+  private async _impactImpl(repo: RepoHandle, params: {
+    target: string;
+    direction: 'upstream' | 'downstream';
+    maxDepth?: number;
+    relationTypes?: string[];
+    includeTests?: boolean;
+    minConfidence?: number;
   }): Promise<any> {
     await this.ensureInitialized(repo.id);
     
@@ -1358,6 +1422,7 @@ export class LocalBackend {
     const impacted: any[] = [];
     const visited = new Set<string>([symId]);
     let frontier = [symId];
+    let traversalComplete = true;
     
     for (let depth = 1; depth <= maxDepth && frontier.length > 0; depth++) {
       const nextFrontier: string[] = [];
@@ -1391,7 +1456,13 @@ export class LocalBackend {
             });
           }
         }
-      } catch (e) { logQueryError('impact:depth-traversal', e); }
+      } catch (e) {
+        logQueryError('impact:depth-traversal', e);
+        // Break out of depth loop on query failure but return partial results
+        // collected so far, rather than silently swallowing the error (#321)
+        traversalComplete = false;
+        break;
+      }
       
       frontier = nextFrontier;
     }
@@ -1408,31 +1479,51 @@ export class LocalBackend {
     let affectedModules: any[] = [];
 
     if (impacted.length > 0) {
-      const allIds = impacted.map(i => `'${i.id.replace(/'/g, "''")}'`).join(', ');
-      const d1Ids = (grouped[1] || []).map((i: any) => `'${i.id.replace(/'/g, "''")}'`).join(', ');
+      // Cap IN-clause to 100 IDs to prevent oversized queries that crash
+      // the native DB engine on arm64 macOS (#292)
+      const cappedImpacted = impacted.slice(0, 100);
+      const allIds = cappedImpacted.map(i => `'${String(i.id ?? '').replace(/'/g, "''")}'`).join(', ');
+      const d1Items = (grouped[1] || []).slice(0, 100);
+      const d1Ids = d1Items.map((i: any) => `'${String(i.id ?? '').replace(/'/g, "''")}'`).join(', ');
 
-      // Affected processes: which execution flows are broken and at which step
-      const [processRows, moduleRows, directModuleRows] = await Promise.all([
-        executeQuery(repo.id, `
-          MATCH (s)-[r:CodeRelation {type: 'STEP_IN_PROCESS'}]->(p:Process)
-          WHERE s.id IN [${allIds}]
-          RETURN p.heuristicLabel AS name, COUNT(DISTINCT s.id) AS hits, MIN(r.step) AS minStep, p.stepCount AS stepCount
-          ORDER BY hits DESC
-          LIMIT 20
-        `).catch(() => []),
-        executeQuery(repo.id, `
-          MATCH (s)-[:CodeRelation {type: 'MEMBER_OF'}]->(c:Community)
-          WHERE s.id IN [${allIds}]
-          RETURN c.heuristicLabel AS name, COUNT(DISTINCT s.id) AS hits
-          ORDER BY hits DESC
-          LIMIT 20
-        `).catch(() => []),
-        d1Ids ? executeQuery(repo.id, `
-          MATCH (s)-[:CodeRelation {type: 'MEMBER_OF'}]->(c:Community)
-          WHERE s.id IN [${d1Ids}]
-          RETURN DISTINCT c.heuristicLabel AS name
-        `).catch(() => []) : Promise.resolve([]),
-      ]);
+      // Enrichment queries: sequential on arm64 macOS to avoid SIGSEGV from
+      // concurrent native DB access (#285, #290, #292); parallel elsewhere
+      // to preserve performance on unaffected platforms.
+      const isArm64Mac = process.platform === 'darwin' && process.arch === 'arm64';
+
+      const processQuery = executeQuery(repo.id, `
+        MATCH (s)-[r:CodeRelation {type: 'STEP_IN_PROCESS'}]->(p:Process)
+        WHERE s.id IN [${allIds}]
+        RETURN p.heuristicLabel AS name, COUNT(DISTINCT s.id) AS hits, MIN(r.step) AS minStep, p.stepCount AS stepCount
+        ORDER BY hits DESC
+        LIMIT 20
+      `).catch(() => []);
+      const moduleQuery = () => executeQuery(repo.id, `
+        MATCH (s)-[:CodeRelation {type: 'MEMBER_OF'}]->(c:Community)
+        WHERE s.id IN [${allIds}]
+        RETURN c.heuristicLabel AS name, COUNT(DISTINCT s.id) AS hits
+        ORDER BY hits DESC
+        LIMIT 20
+      `).catch(() => []);
+      const directModuleQuery = () => d1Ids
+        ? executeQuery(repo.id, `
+            MATCH (s)-[:CodeRelation {type: 'MEMBER_OF'}]->(c:Community)
+            WHERE s.id IN [${d1Ids}]
+            RETURN DISTINCT c.heuristicLabel AS name
+          `).catch(() => [])
+        : Promise.resolve([]);
+
+      let processRows: any[], moduleRows: any[], directModuleRows: any[];
+      if (isArm64Mac) {
+        // Sequential: avoid concurrent native DB access
+        processRows = await processQuery;
+        moduleRows = await moduleQuery();
+        directModuleRows = await directModuleQuery();
+      } else {
+        // Parallel: safe on non-arm64 platforms
+        processRows = await processQuery;
+        [moduleRows, directModuleRows] = await Promise.all([moduleQuery(), directModuleQuery()]);
+      }
 
       affectedProcesses = processRows.map((r: any) => ({
         name: r.name || r[0],
@@ -1474,6 +1565,7 @@ export class LocalBackend {
       direction,
       impactedCount: impacted.length,
       risk,
+      ...(!traversalComplete && { partial: true }),
       summary: {
         direct: directCount,
         processes_affected: processCount,
diff --git a/gitnexus/src/mcp/resources.ts b/gitnexus/src/mcp/resources.ts
index 95c7884dc..106a2273e 100644
--- a/gitnexus/src/mcp/resources.ts
+++ b/gitnexus/src/mcp/resources.ts
@@ -321,6 +321,13 @@ nodes:
 
 additional_node_types: "Multi-language: Struct, Enum, Macro, Typedef, Union, Namespace, Trait, Impl, TypeAlias, Const, Static, Property, Record, Delegate, Annotation, Constructor, Template, Module (use backticks in queries: \`Struct\`, \`Enum\`, etc.)"
 
+node_properties:
+  common: "name (STRING), filePath (STRING), startLine (INT32), endLine (INT32)"
+  Method: "parameterCount (INT32), returnType (STRING), isVariadic (BOOL)"
+  Function: "parameterCount (INT32), returnType (STRING), isVariadic (BOOL)"
+  Property: "declaredType (STRING) — the field's type annotation (e.g., 'Address', 'City'). Used for field-access chain resolution."
+  Constructor: "parameterCount (INT32)"
+
 relationships:
   - CONTAINS: File/Folder contains child
   - DEFINES: File defines a symbol
@@ -328,6 +335,10 @@ relationships:
   - IMPORTS: Module imports
   - EXTENDS: Class inheritance
   - IMPLEMENTS: Interface implementation
+  - HAS_METHOD: Class/Struct/Interface owns a Method
+  - HAS_PROPERTY: Class/Struct/Interface owns a Property (field)
+  - ACCESSES: Function/Method reads or writes a Property (reason: 'read' or 'write')
+  - OVERRIDES: Method overrides another Method (MRO)
   - MEMBER_OF: Symbol belongs to community
   - STEP_IN_PROCESS: Symbol is step N in process
 
diff --git a/gitnexus/src/mcp/server.ts b/gitnexus/src/mcp/server.ts
index 81a68c212..2b7314905 100644
--- a/gitnexus/src/mcp/server.ts
+++ b/gitnexus/src/mcp/server.ts
@@ -24,6 +24,7 @@ import {
   GetPromptRequestSchema,
 } from '@modelcontextprotocol/sdk/types.js';
 import { GITNEXUS_TOOLS } from './tools.js';
+import { realStdoutWrite } from './core/lbug-adapter.js';
 import type { LocalBackend } from './local/local-backend.js';
 import { getResourceDefinitions, getResourceTemplates, readResource } from './resources.js';
 
@@ -276,24 +277,45 @@ Follow these steps:
 export async function startMCPServer(backend: LocalBackend): Promise<void> {
   const server = createMCPServer(backend);
 
-  // Connect to stdio transport
-  const transport = new CompatibleStdioServerTransport();
+  // Use the shared stdout reference captured at module-load time by the
+  // lbug-adapter.  Avoids divergence if anything patches stdout between
+  // module load and server start.
+  const _safeStdout = new Proxy(process.stdout, {
+    get(target, prop, receiver) {
+      if (prop === 'write') return realStdoutWrite;
+      const val = Reflect.get(target, prop, receiver);
+      return typeof val === 'function' ? val.bind(target) : val;
+    }
+  });
+  const transport = new CompatibleStdioServerTransport(process.stdin, _safeStdout);
   await server.connect(transport);
 
   // Graceful shutdown helper
   let shuttingDown = false;
-  const shutdown = async () => {
+  const shutdown = async (exitCode = 0) => {
     if (shuttingDown) return;
     shuttingDown = true;
     try { await backend.disconnect(); } catch {}
     try { await server.close(); } catch {}
-    process.exit(0);
+    process.exit(exitCode);
   };
 
   // Handle graceful shutdown
   process.on('SIGINT', shutdown);
   process.on('SIGTERM', shutdown);
 
+  // Log crashes to stderr so they aren't silently lost.
+  // uncaughtException is fatal — shut down.
+  // unhandledRejection is logged but kept non-fatal (availability-first):
+  // killing the server for one missed catch would be worse than logging it.
+  process.on('uncaughtException', (err) => {
+    process.stderr.write(`GitNexus MCP uncaughtException: ${err?.stack || err}\n`);
+    shutdown(1);
+  });
+  process.on('unhandledRejection', (reason: any) => {
+    process.stderr.write(`GitNexus MCP unhandledRejection: ${reason?.stack || reason}\n`);
+  });
+
   // Handle stdio errors — stdin close means the parent process is gone
   process.stdin.on('end', shutdown);
   process.stdin.on('error', () => shutdown());
diff --git a/gitnexus/src/mcp/tools.ts b/gitnexus/src/mcp/tools.ts
index 8565c8bc0..b19baadbf 100644
--- a/gitnexus/src/mcp/tools.ts
+++ b/gitnexus/src/mcp/tools.ts
@@ -78,7 +78,7 @@ SCHEMA:
 - Nodes: File, Folder, Function, Class, Interface, Method, CodeElement, Community, Process
 - Multi-language nodes (use backticks): \`Struct\`, \`Enum\`, \`Trait\`, \`Impl\`, etc.
 - All edges via single CodeRelation table with 'type' property
-- Edge types: CONTAINS, DEFINES, CALLS, IMPORTS, EXTENDS, IMPLEMENTS, HAS_METHOD, OVERRIDES, MEMBER_OF, STEP_IN_PROCESS
+- Edge types: CONTAINS, DEFINES, CALLS, IMPORTS, EXTENDS, IMPLEMENTS, HAS_METHOD, HAS_PROPERTY, ACCESSES, OVERRIDES, MEMBER_OF, STEP_IN_PROCESS
 - Edge properties: type (STRING), confidence (DOUBLE), reason (STRING), step (INT32)
 
 EXAMPLES:
@@ -94,6 +94,12 @@ EXAMPLES:
 • Find all methods of a class:
   MATCH (c:Class {name: "UserService"})-[r:CodeRelation {type: 'HAS_METHOD'}]->(m:Method) RETURN m.name, m.parameterCount, m.returnType
 
+• Find all properties of a class:
+  MATCH (c:Class {name: "User"})-[r:CodeRelation {type: 'HAS_PROPERTY'}]->(p:Property) RETURN p.name, p.declaredType
+
+• Find all writers of a field:
+  MATCH (f:Function)-[r:CodeRelation {type: 'ACCESSES', reason: 'write'}]->(p:Property) WHERE p.name = "address" RETURN f.name, f.filePath
+
 • Find method overrides (MRO resolution):
   MATCH (winner:Method)-[r:CodeRelation {type: 'OVERRIDES'}]->(loser:Method) RETURN winner.name, winner.filePath, loser.filePath, r.reason
 
@@ -119,12 +125,14 @@ TIPS:
   {
     name: 'context',
     description: `360-degree view of a single code symbol.
-Shows categorized incoming/outgoing references (calls, imports, extends, implements), process participation, and file location.
+Shows categorized incoming/outgoing references (calls, imports, extends, implements, methods, properties, overrides), process participation, and file location.
 
 WHEN TO USE: After query() to understand a specific symbol in depth. When you need to know all callers, callees, and what execution flows a symbol participates in.
 AFTER THIS: Use impact() if planning changes, or READ gitnexus://repo/{name}/process/{processName} for full execution trace.
 
-Handles disambiguation: if multiple symbols share the same name, returns candidates for you to pick from. Use uid param for zero-ambiguity lookup from prior results.`,
+Handles disambiguation: if multiple symbols share the same name, returns candidates for you to pick from. Use uid param for zero-ambiguity lookup from prior results.
+
+NOTE: ACCESSES edges (field read/write tracking) are included in context results with reason 'read' or 'write'. CALLS edges resolve through field access chains and method-call chains (e.g., user.address.getCity().save() produces CALLS edges at each step).`,
     inputSchema: {
       type: 'object',
       properties: {
@@ -200,7 +208,9 @@ Depth groups:
 - d=2: LIKELY AFFECTED (indirect)
 - d=3: MAY NEED TESTING (transitive)
 
-EdgeType: CALLS, IMPORTS, EXTENDS, IMPLEMENTS, HAS_METHOD, OVERRIDES
+TIP: Default traversal uses CALLS/IMPORTS/EXTENDS/IMPLEMENTS. For class members, include HAS_METHOD and HAS_PROPERTY in relationTypes. For field access analysis, include ACCESSES in relationTypes.
+
+EdgeType: CALLS, IMPORTS, EXTENDS, IMPLEMENTS, HAS_METHOD, HAS_PROPERTY, OVERRIDES, ACCESSES
 Confidence: 1.0 = certain, <0.8 = fuzzy match`,
     inputSchema: {
       type: 'object',
@@ -208,7 +218,7 @@ Confidence: 1.0 = certain, <0.8 = fuzzy match`,
         target: { type: 'string', description: 'Name of function, class, or file to analyze' },
         direction: { type: 'string', description: 'upstream (what depends on this) or downstream (what this depends on)' },
         maxDepth: { type: 'number', description: 'Max relationship depth (default: 3)', default: 3 },
-        relationTypes: { type: 'array', items: { type: 'string' }, description: 'Filter: CALLS, IMPORTS, EXTENDS, IMPLEMENTS, HAS_METHOD, OVERRIDES (default: usage-based)' },
+        relationTypes: { type: 'array', items: { type: 'string' }, description: 'Filter: CALLS, IMPORTS, EXTENDS, IMPLEMENTS, HAS_METHOD, HAS_PROPERTY, OVERRIDES, ACCESSES (default: usage-based, ACCESSES excluded by default)' },
         includeTests: { type: 'boolean', description: 'Include test files (default: false)' },
         minConfidence: { type: 'number', description: 'Minimum confidence 0-1 (default: 0.7)' },
         repo: { type: 'string', description: 'Repository name or path. Omit if only one repo is indexed.' },
diff --git a/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/app/main.cpp b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/app/main.cpp
new file mode 100644
index 000000000..b8820bed5
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/app/main.cpp
@@ -0,0 +1,7 @@
+#include "../models/user_factory.h"
+
+void process() {
+    User user = get_user();
+    user.save();
+    user.get_name();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user.cpp b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user.cpp
new file mode 100644
index 000000000..7e1d2f646
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user.cpp
@@ -0,0 +1,7 @@
+#include "user.h"
+
+void User::save() {}
+
+std::string User::get_name() {
+    return "";
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user.h b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user.h
new file mode 100644
index 000000000..2dc4e1a99
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <string>
+
+class User {
+public:
+    void save();
+    std::string get_name();
+};
diff --git a/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user_factory.cpp b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user_factory.cpp
new file mode 100644
index 000000000..8f25718ca
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user_factory.cpp
@@ -0,0 +1,5 @@
+#include "user_factory.h"
+
+User get_user() {
+    return User();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user_factory.h b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user_factory.h
new file mode 100644
index 000000000..5eff92de6
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/cpp-cross-file/models/user_factory.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "user.h"
+
+User get_user();
diff --git a/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/App/Program.cs b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/App/Program.cs
new file mode 100644
index 000000000..ad073b105
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/App/Program.cs
@@ -0,0 +1,14 @@
+using static CrossFile.Models.UserFactory;
+
+namespace CrossFile.App
+{
+    public class Program
+    {
+        public void Run()
+        {
+            var u = GetUser();
+            u.Save();
+            u.GetName();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/CrossFile.csproj b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/CrossFile.csproj
new file mode 100644
index 000000000..fad9151a4
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/CrossFile.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <RootNamespace>CrossFile</RootNamespace>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/Models/User.cs b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/Models/User.cs
new file mode 100644
index 000000000..d33f57891
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/Models/User.cs
@@ -0,0 +1,8 @@
+namespace CrossFile.Models
+{
+    public class User
+    {
+        public void Save() {}
+        public string GetName() { return ""; }
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/Models/UserFactory.cs b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/Models/UserFactory.cs
new file mode 100644
index 000000000..f25181f73
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/csharp-cross-file/Models/UserFactory.cs
@@ -0,0 +1,7 @@
+namespace CrossFile.Models
+{
+    public static class UserFactory
+    {
+        public static User GetUser() { return new User(); }
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/go-cross-file/app/main.go b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/app/main.go
new file mode 100644
index 000000000..6b8efa12b
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/app/main.go
@@ -0,0 +1,9 @@
+package main
+
+import "go-cross-file/models"
+
+func main() {
+	user := models.GetUser()
+	user.Save()
+	user.GetName()
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/go-cross-file/go.mod b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/go.mod
new file mode 100644
index 000000000..478cb8e64
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/go.mod
@@ -0,0 +1,3 @@
+module go-cross-file
+
+go 1.21
diff --git a/gitnexus/test/fixtures/cross-file-binding/go-cross-file/models/factory.go b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/models/factory.go
new file mode 100644
index 000000000..2354cafae
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/models/factory.go
@@ -0,0 +1,5 @@
+package models
+
+func GetUser() User {
+	return User{}
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/go-cross-file/models/user.go b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/models/user.go
new file mode 100644
index 000000000..d1d70905a
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/go-cross-file/models/user.go
@@ -0,0 +1,7 @@
+package models
+
+type User struct{}
+
+func (u User) Save() {}
+
+func (u User) GetName() string { return "" }
diff --git a/gitnexus/test/fixtures/cross-file-binding/java-cross-file/app/App.java b/gitnexus/test/fixtures/cross-file-binding/java-cross-file/app/App.java
new file mode 100644
index 000000000..89bec4993
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/java-cross-file/app/App.java
@@ -0,0 +1,11 @@
+package app;
+
+import static models.UserFactory.getUser;
+
+public class App {
+    public void run() {
+        var user = getUser();
+        user.save();
+        user.getName();
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/java-cross-file/models/User.java b/gitnexus/test/fixtures/cross-file-binding/java-cross-file/models/User.java
new file mode 100644
index 000000000..ea2e8d1fe
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/java-cross-file/models/User.java
@@ -0,0 +1,6 @@
+package models;
+
+public class User {
+    public void save() {}
+    public String getName() { return ""; }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/java-cross-file/models/UserFactory.java b/gitnexus/test/fixtures/cross-file-binding/java-cross-file/models/UserFactory.java
new file mode 100644
index 000000000..b584cb62a
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/java-cross-file/models/UserFactory.java
@@ -0,0 +1,7 @@
+package models;
+
+public class UserFactory {
+    public static User getUser() {
+        return new User();
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/js-cross-file/src/app.js b/gitnexus/test/fixtures/cross-file-binding/js-cross-file/src/app.js
new file mode 100644
index 000000000..3ab06c455
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/js-cross-file/src/app.js
@@ -0,0 +1,7 @@
+import { getUser } from './models';
+
+export function run() {
+  const u = getUser();
+  u.save();
+  u.getName();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/js-cross-file/src/models.js b/gitnexus/test/fixtures/cross-file-binding/js-cross-file/src/models.js
new file mode 100644
index 000000000..5d33e9be4
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/js-cross-file/src/models.js
@@ -0,0 +1,8 @@
+export class User {
+  save() {}
+  getName() { return ''; }
+}
+
+export function getUser() {
+  return new User();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/kotlin-cross-file/app/App.kt b/gitnexus/test/fixtures/cross-file-binding/kotlin-cross-file/app/App.kt
new file mode 100644
index 000000000..071cf836e
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/kotlin-cross-file/app/App.kt
@@ -0,0 +1,11 @@
+package app
+
+import models.getUser
+
+class App {
+    fun run() {
+        val u = getUser()
+        u.save()
+        u.getName()
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/kotlin-cross-file/models/User.kt b/gitnexus/test/fixtures/cross-file-binding/kotlin-cross-file/models/User.kt
new file mode 100644
index 000000000..6cda54f94
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/kotlin-cross-file/models/User.kt
@@ -0,0 +1,8 @@
+package models
+
+class User {
+    fun save() {}
+    fun getName(): String = ""
+}
+
+fun getUser(): User = User()
diff --git a/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Main.php b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Main.php
new file mode 100644
index 000000000..29255e966
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Main.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace App;
+
+use function App\Models\getUser;
+
+class Main {
+    public function run(): void {
+        $u = getUser();
+        $u->save();
+        $u->getName();
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Models/User.php b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Models/User.php
new file mode 100644
index 000000000..4b452bf67
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Models/User.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Models;
+
+class User {
+    public function save(): void {}
+    public function getName(): string { return ''; }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Models/UserFactory.php b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Models/UserFactory.php
new file mode 100644
index 000000000..c89f5c62b
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/app/Models/UserFactory.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace App\Models;
+
+function getUser(): User {
+    return new User();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/php-cross-file/composer.json b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/composer.json
new file mode 100644
index 000000000..386b0bd2d
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/php-cross-file/composer.json
@@ -0,0 +1,7 @@
+{
+  "autoload": {
+    "psr-4": {
+      "App\\": "app/"
+    }
+  }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/py-cross-file/src/app.py b/gitnexus/test/fixtures/cross-file-binding/py-cross-file/src/app.py
new file mode 100644
index 000000000..82483b9ea
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/py-cross-file/src/app.py
@@ -0,0 +1,6 @@
+from models import get_user
+
+def run():
+    u = get_user()
+    u.save()
+    u.get_name()
diff --git a/gitnexus/test/fixtures/cross-file-binding/py-cross-file/src/models.py b/gitnexus/test/fixtures/cross-file-binding/py-cross-file/src/models.py
new file mode 100644
index 000000000..9986fc4fb
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/py-cross-file/src/models.py
@@ -0,0 +1,9 @@
+class User:
+    def save(self):
+        pass
+
+    def get_name(self) -> str:
+        return ''
+
+def get_user() -> User:
+    return User()
diff --git a/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/app.rb b/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/app.rb
new file mode 100644
index 000000000..7127c06dc
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/app.rb
@@ -0,0 +1,7 @@
+require_relative 'models/user_factory'
+
+def process
+  user = UserFactory.get_user
+  user.save
+  user.get_name
+end
diff --git a/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/models/user.rb b/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/models/user.rb
new file mode 100644
index 000000000..c5d2b4d9f
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/models/user.rb
@@ -0,0 +1,9 @@
+class User
+  def save
+    puts "saving"
+  end
+
+  def get_name
+    "Alice"
+  end
+end
diff --git a/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/models/user_factory.rb b/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/models/user_factory.rb
new file mode 100644
index 000000000..17119d6ee
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/rb-cross-file/models/user_factory.rb
@@ -0,0 +1,7 @@
+require_relative 'user'
+
+class UserFactory
+  def self.get_user
+    User.new
+  end
+end
diff --git a/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/factory.rs b/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/factory.rs
new file mode 100644
index 000000000..0ceeb44dc
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/factory.rs
@@ -0,0 +1,5 @@
+use crate::models::User;
+
+pub fn get_user() -> User {
+    User
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/main.rs b/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/main.rs
new file mode 100644
index 000000000..796c3b80c
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/main.rs
@@ -0,0 +1,10 @@
+mod factory;
+mod models;
+
+use crate::factory::get_user;
+
+pub fn process() {
+    let u = get_user();
+    u.save();
+    u.get_name();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/models.rs b/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/models.rs
new file mode 100644
index 000000000..d749a03f4
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/rs-cross-file/src/models.rs
@@ -0,0 +1,9 @@
+pub struct User;
+
+impl User {
+    pub fn save(&self) {}
+
+    pub fn get_name(&self) -> String {
+        String::new()
+    }
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-circular/src/a.ts b/gitnexus/test/fixtures/cross-file-binding/ts-circular/src/a.ts
new file mode 100644
index 000000000..54adda1f2
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-circular/src/a.ts
@@ -0,0 +1,8 @@
+import { getB } from './b';
+export class A {
+  doA(): void {}
+}
+export function processA() {
+  const b = getB();
+  b.doB();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-circular/src/b.ts b/gitnexus/test/fixtures/cross-file-binding/ts-circular/src/b.ts
new file mode 100644
index 000000000..f15cfe792
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-circular/src/b.ts
@@ -0,0 +1,7 @@
+import { A } from './a';
+export class B {
+  doB(): void {}
+}
+export function getB(): B {
+  return new B();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/app.ts b/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/app.ts
new file mode 100644
index 000000000..97b48527f
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/app.ts
@@ -0,0 +1,5 @@
+import { getConfig } from './index';
+export function init() {
+  const config = getConfig();
+  config.validate();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/core.ts b/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/core.ts
new file mode 100644
index 000000000..93000e716
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/core.ts
@@ -0,0 +1,6 @@
+export class Config {
+  validate(): boolean { return true; }
+}
+export function getConfig(): Config {
+  return new Config();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/index.ts b/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/index.ts
new file mode 100644
index 000000000..c7d471009
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-reexport/src/index.ts
@@ -0,0 +1 @@
+export { getConfig } from './core';
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-return-type/src/api.ts b/gitnexus/test/fixtures/cross-file-binding/ts-return-type/src/api.ts
new file mode 100644
index 000000000..93000e716
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-return-type/src/api.ts
@@ -0,0 +1,6 @@
+export class Config {
+  validate(): boolean { return true; }
+}
+export function getConfig(): Config {
+  return new Config();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-return-type/src/consumer.ts b/gitnexus/test/fixtures/cross-file-binding/ts-return-type/src/consumer.ts
new file mode 100644
index 000000000..5cfa8fec3
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-return-type/src/consumer.ts
@@ -0,0 +1,5 @@
+import { getConfig } from './api';
+export function run() {
+  const c = getConfig();
+  c.validate();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/app.ts b/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/app.ts
new file mode 100644
index 000000000..d9d0f0f16
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/app.ts
@@ -0,0 +1,5 @@
+import { user } from './service';
+export function main() {
+  user.save();
+  user.getName();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/models.ts b/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/models.ts
new file mode 100644
index 000000000..b2115f9f2
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/models.ts
@@ -0,0 +1,7 @@
+export class User {
+  save(): void {}
+  getName(): string { return ''; }
+}
+export function getUser(): User {
+  return new User();
+}
diff --git a/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/service.ts b/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/service.ts
new file mode 100644
index 000000000..e0fb9dd7b
--- /dev/null
+++ b/gitnexus/test/fixtures/cross-file-binding/ts-simple/src/service.ts
@@ -0,0 +1,2 @@
+import { getUser } from './models';
+export const user = getUser();
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/models/Repo.h b/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/models/Repo.h
new file mode 100644
index 000000000..5e9723b25
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/models/Repo.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class Repo {
+public:
+    Repo(const std::string& name) : name_(name) {}
+    bool save() { return false; }
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/models/User.h b/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/models/User.h
new file mode 100644
index 000000000..44b48cd6d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/models/User.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class User {
+public:
+    User(const std::string& name) : name_(name) {}
+    bool save() { return true; }
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/services/App.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/services/App.cpp
new file mode 100644
index 000000000..c6e85f78c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-assignment-chain/services/App.cpp
@@ -0,0 +1,13 @@
+#include "models/User.h"
+#include "models/Repo.h"
+
+// Tests C++ auto alias = u assignment chain propagation.
+void processEntities() {
+    User u("alice");
+    auto alias = u;
+    alias.save();
+
+    Repo r("maindb");
+    auto rAlias = r;
+    rAlias.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-call-result-binding/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-call-result-binding/app.cpp
new file mode 100644
index 000000000..69e818252
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-call-result-binding/app.cpp
@@ -0,0 +1,6 @@
+#include "user.h"
+
+void processUser() {
+    auto user = getUser("alice");
+    user.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-call-result-binding/user.h b/gitnexus/test/fixtures/lang-resolution/cpp-call-result-binding/user.h
new file mode 100644
index 000000000..112b70fea
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-call-result-binding/user.h
@@ -0,0 +1,14 @@
+#pragma once
+#include <string>
+
+class User {
+public:
+    User(const std::string& n) : name_(n) {}
+    bool save() { return true; }
+private:
+    std::string name_;
+};
+
+User getUser(const std::string& name) {
+    return User(name);
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/app.cpp
new file mode 100644
index 000000000..af1cd1bc3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/app.cpp
@@ -0,0 +1,8 @@
+#include "service.h"
+#include "user.h"
+#include "repo.h"
+
+void processUser() {
+    UserService svc;
+    svc.getUser().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/repo.h b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/repo.h
new file mode 100644
index 000000000..de47c0133
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/repo.h
@@ -0,0 +1,6 @@
+#pragma once
+
+class Repo {
+public:
+    bool save() { return true; }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/service.h b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/service.h
new file mode 100644
index 000000000..342b2f63b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/service.h
@@ -0,0 +1,7 @@
+#pragma once
+#include "user.h"
+
+class UserService {
+public:
+    User getUser() { return User(); }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-range-for/user.h b/gitnexus/test/fixtures/lang-resolution/cpp-chain-call/user.h
similarity index 100%
rename from gitnexus/test/fixtures/lang-resolution/cpp-range-for/user.h
rename to gitnexus/test/fixtures/lang-resolution/cpp-chain-call/user.h
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-deep-field-chain/models.h b/gitnexus/test/fixtures/lang-resolution/cpp-deep-field-chain/models.h
new file mode 100644
index 000000000..6c0553b82
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-deep-field-chain/models.h
@@ -0,0 +1,30 @@
+#pragma once
+
+class City {
+public:
+    std::string zipCode;
+
+    std::string getName() {
+        return "city";
+    }
+};
+
+class Address {
+public:
+    City city;
+    std::string street;
+
+    void save() {
+        // persist address
+    }
+};
+
+class User {
+public:
+    std::string name;
+    Address address;
+
+    std::string greet() {
+        return name;
+    }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-deep-field-chain/service.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-deep-field-chain/service.cpp
new file mode 100644
index 000000000..bfa5a904c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-deep-field-chain/service.cpp
@@ -0,0 +1,9 @@
+#include "models.h"
+
+void processUser(User user) {
+    // 2-level chain: user.address → Address, then .save() → Address#save
+    user.address.save();
+
+    // 3-level chain: user.address → Address, .city → City, .getName() → City#getName
+    user.address.city.getName();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-default-params/src/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-default-params/src/app.cpp
new file mode 100644
index 000000000..469ba7908
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-default-params/src/app.cpp
@@ -0,0 +1,10 @@
+#include <string>
+
+std::string greet(std::string name, std::string greeting = "Hello") {
+    return greeting + ", " + name;
+}
+
+void process() {
+    greet("Alice");
+    greet("Bob", "Hi");
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/App.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/App.cpp
new file mode 100644
index 000000000..849e5b206
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/App.cpp
@@ -0,0 +1,15 @@
+#include "User.h"
+#include "Repo.h"
+#include <vector>
+
+void processUsers(std::vector<User>* usersPtr) {
+    for (auto& user : *usersPtr) {
+        user.save();
+    }
+}
+
+void processRepos(std::vector<Repo>* reposPtr) {
+    for (const auto& repo : *reposPtr) {
+        repo.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/Repo.h b/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/Repo.h
new file mode 100644
index 000000000..b3858517c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/Repo.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class Repo {
+public:
+    Repo(const std::string& name) : name_(name) {}
+    void save() {}
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/User.h b/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/User.h
new file mode 100644
index 000000000..fdb227354
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-deref-range-for/User.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class User {
+public:
+    User(const std::string& name) : name_(name) {}
+    void save() {}
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-field-types/models.h b/gitnexus/test/fixtures/lang-resolution/cpp-field-types/models.h
new file mode 100644
index 000000000..0b91ffd26
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-field-types/models.h
@@ -0,0 +1,20 @@
+#pragma once
+
+class Address {
+public:
+    std::string city;
+
+    void save() {
+        // persist address
+    }
+};
+
+class User {
+public:
+    std::string name;
+    Address address;
+
+    std::string greet() {
+        return name;
+    }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-field-types/service.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-field-types/service.cpp
new file mode 100644
index 000000000..4b90c656c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-field-types/service.cpp
@@ -0,0 +1,6 @@
+#include "models.h"
+
+void processUser(User user) {
+    // Field-access chain: user.address → Address, then .save() → Address#save
+    user.address.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/A.h b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/A.h
new file mode 100644
index 000000000..f34c8dc32
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/A.h
@@ -0,0 +1,7 @@
+#pragma once
+#include "Greeting.h"
+
+class A {
+public:
+    Greeting greet() { return Greeting(); }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/B.h b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/B.h
new file mode 100644
index 000000000..dcc2220d1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/B.h
@@ -0,0 +1,4 @@
+#pragma once
+#include "A.h"
+
+class B : public A {};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/C.h b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/C.h
new file mode 100644
index 000000000..c664e8a5b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/C.h
@@ -0,0 +1,4 @@
+#pragma once
+#include "B.h"
+
+class C : public B {};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/Greeting.h b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/Greeting.h
new file mode 100644
index 000000000..b19ae1a81
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/Greeting.h
@@ -0,0 +1,6 @@
+#pragma once
+
+class Greeting {
+public:
+    void save() {}
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/app.cpp
new file mode 100644
index 000000000..3f702861a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-grandparent-resolution/src/app.cpp
@@ -0,0 +1,6 @@
+#include "C.h"
+
+void process() {
+    C c;
+    c.greet().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-method-chain-binding/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-method-chain-binding/app.cpp
new file mode 100644
index 000000000..fc69a7a21
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-method-chain-binding/app.cpp
@@ -0,0 +1,8 @@
+#include "models.h"
+
+void processChain() {
+    auto user = getUser();
+    auto addr = user.address;
+    auto city = addr.getCity();
+    city.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-method-chain-binding/models.h b/gitnexus/test/fixtures/lang-resolution/cpp-method-chain-binding/models.h
new file mode 100644
index 000000000..e7dad9478
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-method-chain-binding/models.h
@@ -0,0 +1,26 @@
+#pragma once
+#include <string>
+
+class City {
+public:
+    std::string name;
+    City(const std::string& n) : name(n) {}
+    bool save() { return true; }
+};
+
+class Address {
+public:
+    City city;
+    Address(const City& c) : city(c) {}
+    City getCity() { return city; }
+};
+
+class User {
+public:
+    Address address;
+    User(const Address& a) : address(a) {}
+};
+
+User getUser() {
+    return User(Address(City("NYC")));
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/models/Repo.h b/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/models/Repo.h
new file mode 100644
index 000000000..8e02df505
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/models/Repo.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class Repo {
+public:
+    Repo(const std::string& dbName) : dbName_(dbName) {}
+    bool save() { return false; }
+private:
+    std::string dbName_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/models/User.h b/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/models/User.h
new file mode 100644
index 000000000..44b48cd6d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/models/User.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class User {
+public:
+    User(const std::string& name) : name_(name) {}
+    bool save() { return true; }
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/services/App.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/services/App.cpp
new file mode 100644
index 000000000..2f42f2b96
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-nullable-receiver/services/App.cpp
@@ -0,0 +1,19 @@
+#include "models/User.h"
+#include "models/Repo.h"
+
+User* findUser() {
+    return new User("alice");
+}
+
+Repo* findRepo() {
+    return new Repo("maindb");
+}
+
+void processEntities() {
+    User* user = findUser();
+    Repo* repo = findRepo();
+
+    // Pointer-based nullable receivers — should disambiguate via unwrapped type
+    user->save();
+    repo->save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-overload-param-types/service.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-overload-param-types/service.cpp
new file mode 100644
index 000000000..b65fdacfa
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-overload-param-types/service.cpp
@@ -0,0 +1,19 @@
+#include <string>
+
+class User {};
+
+class UserService {
+public:
+    User* lookup(int id) {
+        return nullptr;
+    }
+
+    User* lookup(std::string name) {
+        return nullptr;
+    }
+
+    void run() {
+        lookup(42);        // literal int → should disambiguate to lookup(int)
+        lookup("alice");   // literal string → should disambiguate to lookup(string)
+    }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-pointer-ref-fields/models.h b/gitnexus/test/fixtures/lang-resolution/cpp-pointer-ref-fields/models.h
new file mode 100644
index 000000000..51443bc8a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-pointer-ref-fields/models.h
@@ -0,0 +1,21 @@
+#pragma once
+
+class Address {
+public:
+    std::string city;
+
+    void save() {
+        // persist address
+    }
+};
+
+class User {
+public:
+    Address* address;       // raw pointer member field
+    Address& ref_address;   // reference member field
+    std::string name;
+
+    std::string greet() {
+        return name;
+    }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-pointer-ref-fields/service.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-pointer-ref-fields/service.cpp
new file mode 100644
index 000000000..d7ffbfd77
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-pointer-ref-fields/service.cpp
@@ -0,0 +1,6 @@
+#include "models.h"
+
+void processUser(User user) {
+    // Pointer member field access: user.address->save()
+    user.address->save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-range-for/App.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/App.cpp
new file mode 100644
index 000000000..79fb20095
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/App.cpp
@@ -0,0 +1,15 @@
+#include "User.h"
+#include "Repo.h"
+#include <vector>
+
+void processUsers(const std::vector<User>& users) {
+    for (auto& user : users) {
+        user.save();
+    }
+}
+
+void processRepos(const std::vector<Repo>& repos) {
+    for (const auto& repo : repos) {
+        repo.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-range-for/Repo.h b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/Repo.h
new file mode 100644
index 000000000..b3858517c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/Repo.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class Repo {
+public:
+    Repo(const std::string& name) : name_(name) {}
+    void save() {}
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-range-for/User.h b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/User.h
new file mode 100644
index 000000000..fdb227354
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/User.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class User {
+public:
+    User(const std::string& name) : name_(name) {}
+    void save() {}
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-range-for/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-range-for/app.cpp
deleted file mode 100644
index e37a6e932..000000000
--- a/gitnexus/test/fixtures/lang-resolution/cpp-range-for/app.cpp
+++ /dev/null
@@ -1,8 +0,0 @@
-#include "user.h"
-#include <vector>
-
-void processUsers(std::vector<User> users) {
-    for (User& user : users) {
-        user.save();
-    }
-}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-smart-ptr-dispatch/src/app.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-smart-ptr-dispatch/src/app.cpp
new file mode 100644
index 000000000..ff3b38c85
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-smart-ptr-dispatch/src/app.cpp
@@ -0,0 +1,17 @@
+#include <memory>
+#include <string>
+
+class Animal {
+public:
+    virtual std::string speak() { return "..."; }
+};
+
+class Dog : public Animal {
+public:
+    std::string speak() override { return "woof"; }
+};
+
+void process() {
+    auto dog = std::make_shared<Dog>();
+    dog->speak();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/App.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/App.cpp
new file mode 100644
index 000000000..bd2e390f3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/App.cpp
@@ -0,0 +1,17 @@
+#include "User.h"
+#include "Repo.h"
+#include <map>
+#include <string>
+#include <vector>
+
+void processUserMap(std::map<std::string, User> userMap) {
+    for (auto& [key, user] : userMap) {
+        user.save();
+    }
+}
+
+void processRepoMap(std::map<std::string, Repo> repoMap) {
+    for (const auto& [key, repo] : repoMap) {
+        repo.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/Repo.h b/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/Repo.h
new file mode 100644
index 000000000..b3858517c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/Repo.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class Repo {
+public:
+    Repo(const std::string& name) : name_(name) {}
+    void save() {}
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/User.h b/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/User.h
new file mode 100644
index 000000000..fdb227354
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-structured-binding/User.h
@@ -0,0 +1,10 @@
+#pragma once
+#include <string>
+
+class User {
+public:
+    User(const std::string& name) : name_(name) {}
+    void save() {}
+private:
+    std::string name_;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-write-access/models.h b/gitnexus/test/fixtures/lang-resolution/cpp-write-access/models.h
new file mode 100644
index 000000000..da9b5ee8f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-write-access/models.h
@@ -0,0 +1,12 @@
+#pragma once
+
+class Address {
+public:
+    std::string city;
+};
+
+class User {
+public:
+    std::string name;
+    Address address;
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/cpp-write-access/service.cpp b/gitnexus/test/fixtures/lang-resolution/cpp-write-access/service.cpp
new file mode 100644
index 000000000..91bce93fa
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/cpp-write-access/service.cpp
@@ -0,0 +1,7 @@
+#include "models.h"
+
+void updateUser(User& user) {
+    user.name = "Alice";
+    user.address = Address();
+    user.name += " Smith";
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/AssignmentChain.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/AssignmentChain.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/AssignmentChain.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Models/Repo.cs
new file mode 100644
index 000000000..fc587e48a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Models/Repo.cs
@@ -0,0 +1,9 @@
+namespace Models;
+
+public class Repo
+{
+    public bool Save()
+    {
+        return false;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Models/User.cs
new file mode 100644
index 000000000..2d2ffe30a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Models/User.cs
@@ -0,0 +1,9 @@
+namespace Models;
+
+public class User
+{
+    public bool Save()
+    {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Program.cs
new file mode 100644
index 000000000..f32710836
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-assignment-chain/Program.cs
@@ -0,0 +1,20 @@
+using Models;
+
+namespace App;
+
+public class Program
+{
+    static User GetUser() => new User();
+    static Repo GetRepo() => new Repo();
+
+    public static void ProcessEntities()
+    {
+        User u = GetUser();
+        var alias = u;
+        alias.Save();
+
+        Repo r = GetRepo();
+        var rAlias = r;
+        rAlias.Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-call-result-binding/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-call-result-binding/App.cs
new file mode 100644
index 000000000..52a0e032a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-call-result-binding/App.cs
@@ -0,0 +1,22 @@
+class User {
+    public string Name { get; set; }
+
+    public User(string name) {
+        Name = name;
+    }
+
+    public bool Save() {
+        return true;
+    }
+}
+
+class App {
+    static User GetUser(string name) {
+        return new User(name);
+    }
+
+    void ProcessUser() {
+        var user = GetUser("alice");
+        user.Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Models/Repo.cs
new file mode 100644
index 000000000..e43cde2cd
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Models/Repo.cs
@@ -0,0 +1,9 @@
+namespace ChainCall.Models;
+
+public class Repo
+{
+    public bool Save()
+    {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Models/User.cs
new file mode 100644
index 000000000..dfff3d591
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Models/User.cs
@@ -0,0 +1,9 @@
+namespace ChainCall.Models;
+
+public class User
+{
+    public bool Save()
+    {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Program.cs
new file mode 100644
index 000000000..40fb68ac6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Program.cs
@@ -0,0 +1,10 @@
+using ChainCall.Services;
+
+public class App
+{
+    public void ProcessUser()
+    {
+        var svc = new UserService();
+        svc.GetUser().Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Services/UserService.cs b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Services/UserService.cs
new file mode 100644
index 000000000..32e40b18b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-chain-call/Services/UserService.cs
@@ -0,0 +1,11 @@
+using ChainCall.Models;
+
+namespace ChainCall.Services;
+
+public class UserService
+{
+    public User GetUser()
+    {
+        return new User();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-deep-field-chain/Models.cs b/gitnexus/test/fixtures/lang-resolution/csharp-deep-field-chain/Models.cs
new file mode 100644
index 000000000..7e3b1ae00
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-deep-field-chain/Models.cs
@@ -0,0 +1,33 @@
+namespace DeepFieldChain;
+
+public class City
+{
+    public string ZipCode { get; set; }
+
+    public string GetName()
+    {
+        return "city";
+    }
+}
+
+public class Address
+{
+    public City City { get; set; }
+    public string Street { get; set; }
+
+    public void Save()
+    {
+        // persist address
+    }
+}
+
+public class User
+{
+    public string Name { get; set; }
+    public Address Address { get; set; }
+
+    public string Greet()
+    {
+        return Name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-deep-field-chain/Service.cs b/gitnexus/test/fixtures/lang-resolution/csharp-deep-field-chain/Service.cs
new file mode 100644
index 000000000..52e8594bc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-deep-field-chain/Service.cs
@@ -0,0 +1,13 @@
+namespace DeepFieldChain;
+
+public class Service
+{
+    public static void ProcessUser(User user)
+    {
+        // 2-level chain: user.Address → Address, then .Save() → Address#Save
+        user.Address.Save();
+
+        // 3-level chain: user.Address → Address, .City → City, .GetName() → City#GetName
+        user.Address.City.GetName();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/App.cs
new file mode 100644
index 000000000..cd94c3653
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/App.cs
@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+
+public class App {
+    public void ProcessValues(Dictionary<string, User> data) {
+        foreach (var user in data.Values) {
+            user.Save();
+        }
+    }
+
+    public void ProcessList(List<User> users) {
+        foreach (var user in users) {
+            user.Save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/Repo.cs
new file mode 100644
index 000000000..0e8416a76
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/Repo.cs
@@ -0,0 +1,4 @@
+public class Repo {
+    public string Name { get; set; }
+    public void Save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/User.cs
new file mode 100644
index 000000000..57c04e93b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-dictionary-keys-values/User.cs
@@ -0,0 +1,4 @@
+public class User {
+    public string Name { get; set; }
+    public void Save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-field-types/Models.cs b/gitnexus/test/fixtures/lang-resolution/csharp-field-types/Models.cs
new file mode 100644
index 000000000..191c7624a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-field-types/Models.cs
@@ -0,0 +1,22 @@
+namespace FieldTypes;
+
+public class Address
+{
+    public string City { get; set; }
+
+    public void Save()
+    {
+        // persist address
+    }
+}
+
+public class User
+{
+    public string Name { get; set; }
+    public Address Address { get; set; }
+
+    public string Greet()
+    {
+        return Name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-field-types/Service.cs b/gitnexus/test/fixtures/lang-resolution/csharp-field-types/Service.cs
new file mode 100644
index 000000000..48e01d710
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-field-types/Service.cs
@@ -0,0 +1,10 @@
+namespace FieldTypes;
+
+public class Service
+{
+    public static void ProcessUser(User user)
+    {
+        // Field-access chain: user.Address → Address, then .Save() → Address#Save
+        user.Address.Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-foreach/ForeachProj.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/ForeachProj.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/ForeachProj.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Models/Repo.cs
new file mode 100644
index 000000000..fc587e48a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Models/Repo.cs
@@ -0,0 +1,9 @@
+namespace Models;
+
+public class Repo
+{
+    public bool Save()
+    {
+        return false;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Models/User.cs
new file mode 100644
index 000000000..2d2ffe30a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Models/User.cs
@@ -0,0 +1,9 @@
+namespace Models;
+
+public class User
+{
+    public bool Save()
+    {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Program.cs
new file mode 100644
index 000000000..75c0da7c7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-foreach/Program.cs
@@ -0,0 +1,19 @@
+using Models;
+using System.Collections.Generic;
+
+namespace App;
+
+public class AppService
+{
+    public void ProcessEntities(List<User> users, List<Repo> repos)
+    {
+        foreach (User user in users)
+        {
+            user.Save();
+        }
+        foreach (Repo repo in repos)
+        {
+            repo.Save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/A.cs b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/A.cs
new file mode 100644
index 000000000..5bcf24d93
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/A.cs
@@ -0,0 +1,7 @@
+namespace Grandparent.Models
+{
+    public class A
+    {
+        public Greeting Greet() => new Greeting();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/B.cs b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/B.cs
new file mode 100644
index 000000000..d5e37656c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/B.cs
@@ -0,0 +1,4 @@
+namespace Grandparent.Models
+{
+    public class B : A {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/C.cs b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/C.cs
new file mode 100644
index 000000000..20e6d2e4c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/C.cs
@@ -0,0 +1,4 @@
+namespace Grandparent.Models
+{
+    public class C : B {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/Greeting.cs b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/Greeting.cs
new file mode 100644
index 000000000..30a252561
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Models/Greeting.cs
@@ -0,0 +1,7 @@
+namespace Grandparent.Models
+{
+    public class Greeting
+    {
+        public void Save() {}
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Services/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Services/App.cs
new file mode 100644
index 000000000..1880f0484
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-grandparent-resolution/Services/App.cs
@@ -0,0 +1,13 @@
+using Grandparent.Models;
+
+namespace Grandparent.Services
+{
+    public class App
+    {
+        public void Process()
+        {
+            var c = new C();
+            c.Greet().Save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/IsPatternProj.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/IsPatternProj.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/IsPatternProj.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/models/Repo.cs
new file mode 100644
index 000000000..33d88e5a6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/models/Repo.cs
@@ -0,0 +1,6 @@
+namespace IsPattern.Models;
+
+public class Repo
+{
+    public void Save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/models/User.cs
new file mode 100644
index 000000000..5a742f216
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/models/User.cs
@@ -0,0 +1,6 @@
+namespace IsPattern.Models;
+
+public class User
+{
+    public void Save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/services/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/services/App.cs
new file mode 100644
index 000000000..2a28ba740
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-is-pattern/services/App.cs
@@ -0,0 +1,14 @@
+using IsPattern.Models;
+
+namespace IsPattern.Services;
+
+public class App
+{
+    public void Process(object obj)
+    {
+        if (obj is User user)
+        {
+            user.Save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-method-chain-binding/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-method-chain-binding/App.cs
new file mode 100644
index 000000000..1266c130e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-method-chain-binding/App.cs
@@ -0,0 +1,29 @@
+class City {
+    public string Name { get; set; }
+    public City(string name) { Name = name; }
+    public bool Save() { return true; }
+}
+
+class Address {
+    public City City { get; set; }
+    public Address(City city) { City = city; }
+    public City GetCity() { return City; }
+}
+
+class User {
+    public Address Address { get; set; }
+    public User(Address address) { Address = address; }
+}
+
+class App {
+    static User GetUser() {
+        return new User(new Address(new City("NYC")));
+    }
+
+    void ProcessChain() {
+        var user = GetUser();
+        var addr = user.Address;
+        var city = addr.GetCity();
+        city.Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/MixedDeclChain.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/MixedDeclChain.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/MixedDeclChain.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Models/Repo.cs
new file mode 100644
index 000000000..f20237fd9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Models/Repo.cs
@@ -0,0 +1,4 @@
+public class Repo
+{
+    public bool Save() => false;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Models/User.cs
new file mode 100644
index 000000000..605db1949
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Models/User.cs
@@ -0,0 +1,4 @@
+public class User
+{
+    public bool Save() => true;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Program.cs
new file mode 100644
index 000000000..f2565098b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-mixed-decl-chain/Program.cs
@@ -0,0 +1,29 @@
+// Tests assignment chain + is-pattern in the same file.
+// The is-pattern (obj is User u) creates a Tier 0 binding;
+// the assignment chain (var alias = u) propagates it via Tier 2.
+// Also verifies that the type guard in extractPendingAssignment
+// correctly skips is_pattern_expression nodes without breaking.
+public class App
+{
+    public static void ProcessWithChain()
+    {
+        User u = new User();
+        var alias = u;
+        alias.Save();
+    }
+
+    public static void ProcessWithPattern(object obj)
+    {
+        if (obj is User u)
+        {
+            u.Save();
+        }
+    }
+
+    public static void ProcessRepoChain()
+    {
+        Repo r = new Repo();
+        var alias = r;
+        alias.Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/App.cs
new file mode 100644
index 000000000..3550d259a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/App.cs
@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+
+public class App {
+    private Dictionary<string, User> data;
+
+    public void ProcessValues() {
+        foreach (var user in this.data.Values) {
+            user.Save();
+        }
+    }
+
+    public void ProcessKeys() {
+        foreach (var key in this.data.Keys) {
+            key.ToString();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/Repo.cs
new file mode 100644
index 000000000..0e8416a76
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/Repo.cs
@@ -0,0 +1,4 @@
+public class Repo {
+    public string Name { get; set; }
+    public void Save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/User.cs
new file mode 100644
index 000000000..57c04e93b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-nested-member-foreach/User.cs
@@ -0,0 +1,4 @@
+public class User {
+    public string Name { get; set; }
+    public void Save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-no-csproj/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-no-csproj/Models/User.cs
new file mode 100644
index 000000000..c7adb7aad
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-no-csproj/Models/User.cs
@@ -0,0 +1,8 @@
+namespace Models
+{
+    public class User
+    {
+        public void Save() { }
+        public string GetName() { return "alice"; }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-no-csproj/Services/UserService.cs b/gitnexus/test/fixtures/lang-resolution/csharp-no-csproj/Services/UserService.cs
new file mode 100644
index 000000000..e2648a657
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-no-csproj/Services/UserService.cs
@@ -0,0 +1,13 @@
+using Models;
+
+namespace Services
+{
+    public class UserService
+    {
+        public void ProcessUser()
+        {
+            var user = new User();
+            user.Save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Models/Repo.cs
new file mode 100644
index 000000000..e395663a4
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Models/Repo.cs
@@ -0,0 +1,7 @@
+namespace NullCheck.Models
+{
+    public class Repo
+    {
+        public void Save() {}
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Models/User.cs
new file mode 100644
index 000000000..1dbc2d66b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Models/User.cs
@@ -0,0 +1,7 @@
+namespace NullCheck.Models
+{
+    public class User
+    {
+        public void Save() {}
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Services/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Services/App.cs
new file mode 100644
index 000000000..0bc217252
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-null-check-narrowing/Services/App.cs
@@ -0,0 +1,44 @@
+using NullCheck.Models;
+using System;
+
+namespace NullCheck.Services
+{
+    public class App
+    {
+        public App(User? x)
+        {
+            if (x != null)
+            {
+                x.Save();
+            }
+        }
+
+        public void ProcessInequality(User x)
+        {
+            if (x != null)
+            {
+                x.Save();
+            }
+        }
+
+        public void ProcessIsNotNull(User x)
+        {
+            if (x is not null)
+            {
+                x.Save();
+            }
+        }
+
+        public void ProcessInLambda(User? x)
+        {
+            Action act = () =>
+            {
+                if (x != null)
+                {
+                    x.Save();
+                }
+            };
+            act();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-null-conditional/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-null-conditional/App.cs
index 8869ba372..be7f9770b 100644
--- a/gitnexus/test/fixtures/lang-resolution/csharp-null-conditional/App.cs
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-null-conditional/App.cs
@@ -6,10 +6,10 @@ public class AppService
 {
     public void Process()
     {
-        User user = new User();
-        Repo repo = new Repo();
+        User? user = new User();
+        Repo? repo = new Repo();
 
-        // Null-conditional calls — should disambiguate via receiver type
+        // Null-conditional calls — nullable receiver should be unwrapped
         user?.Save();
         repo?.Save();
     }
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-optional-params/Services/App.cs b/gitnexus/test/fixtures/lang-resolution/csharp-optional-params/Services/App.cs
new file mode 100644
index 000000000..99554713d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-optional-params/Services/App.cs
@@ -0,0 +1,13 @@
+public class Greeter {
+    public string Greet(string name, string greeting = "Hello") {
+        return greeting + ", " + name;
+    }
+}
+
+public class Program {
+    public static void Main() {
+        var g = new Greeter();
+        g.Greet("Alice");
+        g.Greet("Bob", "Hi");
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-overload-param-types/Models/UserService.cs b/gitnexus/test/fixtures/lang-resolution/csharp-overload-param-types/Models/UserService.cs
new file mode 100644
index 000000000..c03b367d5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-overload-param-types/Models/UserService.cs
@@ -0,0 +1,25 @@
+namespace Models;
+
+public class User
+{
+    public string GetName() => "user";
+}
+
+public class UserService
+{
+    public User Lookup(int id)
+    {
+        return new User();
+    }
+
+    public User Lookup(string name)
+    {
+        return new User();
+    }
+
+    public void Run()
+    {
+        Lookup(42);        // literal int → should disambiguate to Lookup(int)
+        Lookup("alice");   // literal string → should disambiguate to Lookup(string)
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Models/Repo.cs
new file mode 100644
index 000000000..aa05916b1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Models/Repo.cs
@@ -0,0 +1,7 @@
+namespace Models;
+
+public class Repo
+{
+    public string Name { get; set; } = "";
+    public bool Save() { return true; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Models/User.cs
new file mode 100644
index 000000000..77ec47364
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Models/User.cs
@@ -0,0 +1,7 @@
+namespace Models;
+
+public class User
+{
+    public string Name { get; set; } = "";
+    public bool Save() { return true; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Program.cs
new file mode 100644
index 000000000..429418670
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/Program.cs
@@ -0,0 +1,20 @@
+using Models;
+
+namespace App;
+
+public class AppService
+{
+    public void ProcessWithRecursivePattern(object obj)
+    {
+        if (obj is User { Name: "Alice" } u)
+        {
+            u.Save();
+        }
+
+        var result = obj switch
+        {
+            Repo { Name: "main" } r => r.Save(),
+            _ => false
+        };
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/RecursivePatternProj.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/RecursivePatternProj.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-recursive-pattern/RecursivePatternProj.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Models/Repo.cs
new file mode 100644
index 000000000..ff84d1899
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Models/Repo.cs
@@ -0,0 +1,6 @@
+namespace Models;
+
+public class Repo
+{
+    public bool Save() { return false; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Models/User.cs
new file mode 100644
index 000000000..13aff18b3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Models/User.cs
@@ -0,0 +1,6 @@
+namespace Models;
+
+public class User
+{
+    public bool Save() { return true; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Program.cs
new file mode 100644
index 000000000..9f0e1dc6f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/Program.cs
@@ -0,0 +1,21 @@
+using Models;
+
+namespace App;
+
+public class AppService
+{
+    public void Process(object obj)
+    {
+        if (obj is User user)
+        {
+            user.Save();
+        }
+
+        switch (obj)
+        {
+            case Repo repo:
+                repo.Save();
+                break;
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/SwitchPattern.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/SwitchPattern.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-switch-pattern/SwitchPattern.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Models/Repo.cs b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Models/Repo.cs
new file mode 100644
index 000000000..ff84d1899
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Models/Repo.cs
@@ -0,0 +1,6 @@
+namespace Models;
+
+public class Repo
+{
+    public bool Save() { return false; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Models/User.cs b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Models/User.cs
new file mode 100644
index 000000000..13aff18b3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Models/User.cs
@@ -0,0 +1,6 @@
+namespace Models;
+
+public class User
+{
+    public bool Save() { return true; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Program.cs b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Program.cs
new file mode 100644
index 000000000..412c40013
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/Program.cs
@@ -0,0 +1,29 @@
+using Models;
+using System.Collections.Generic;
+
+namespace App;
+
+public class AppService
+{
+    public void ProcessUsers(List<User> users)
+    {
+        foreach (var user in users)
+        {
+            user.Save();
+        }
+    }
+
+    public void ProcessRepos(List<Repo> repos)
+    {
+        foreach (var repo in repos)
+        {
+            repo.Save();
+        }
+    }
+
+    public void Direct(User u, Repo r)
+    {
+        u.Save();
+        r.Save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/VarForeach.csproj b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/VarForeach.csproj
new file mode 100644
index 000000000..ec2cce143
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-var-foreach/VarForeach.csproj
@@ -0,0 +1,5 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+</Project>
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-write-access/Models.cs b/gitnexus/test/fixtures/lang-resolution/csharp-write-access/Models.cs
new file mode 100644
index 000000000..c10cd6000
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-write-access/Models.cs
@@ -0,0 +1,8 @@
+public class Address {
+    public string City { get; set; }
+}
+
+public class User {
+    public string Name { get; set; }
+    public Address Address { get; set; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/csharp-write-access/Service.cs b/gitnexus/test/fixtures/lang-resolution/csharp-write-access/Service.cs
new file mode 100644
index 000000000..7ab39421e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/csharp-write-access/Service.cs
@@ -0,0 +1,6 @@
+public class UserService {
+    public void UpdateUser(User user) {
+        user.Name = "Alice";
+        user.Address = new Address();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/field-types/models.ts b/gitnexus/test/fixtures/lang-resolution/field-types/models.ts
new file mode 100644
index 000000000..4ac2d2109
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/field-types/models.ts
@@ -0,0 +1,24 @@
+export class Address {
+  city: string;
+
+  save(): void {
+    // persist address
+  }
+}
+
+export class User {
+  name: string;
+  address: Address;
+
+  greet(): string {
+    return this.name;
+  }
+}
+
+export class Config {
+  static DEFAULT: Config = new Config();
+
+  validate(): boolean {
+    return true;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/field-types/service.ts b/gitnexus/test/fixtures/lang-resolution/field-types/service.ts
new file mode 100644
index 000000000..ecb00b374
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/field-types/service.ts
@@ -0,0 +1,11 @@
+import { User, Config } from './models';
+
+function processUser(user: User) {
+  // Field-access chain: user.address resolves to Address, then .save() resolves to Address#save
+  user.address.save();
+}
+
+function validateConfig() {
+  // Static field access: Config.DEFAULT resolves to Config, then .validate() resolves to Config#validate
+  Config.DEFAULT.validate();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/cmd/main.go
new file mode 100644
index 000000000..77745d00e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/cmd/main.go
@@ -0,0 +1,31 @@
+package main
+
+import "example.com/go-assignment-chain/models"
+
+func getUser() models.User {
+	return models.User{}
+}
+
+func getRepo() models.Repo {
+	return models.Repo{}
+}
+
+func processEntities() {
+	var u models.User = getUser()
+	alias := u
+	alias.Save()
+
+	var r models.Repo = getRepo()
+	rAlias := r
+	rAlias.Save()
+}
+
+func processWithVar() {
+	var u models.User = getUser()
+	var alias = u
+	alias.Save()
+
+	var r models.Repo = getRepo()
+	var rAlias = r
+	rAlias.Save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/go.mod b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/go.mod
new file mode 100644
index 000000000..ae305b7f7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/go.mod
@@ -0,0 +1,3 @@
+module example.com/go-assignment-chain
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/models/repo.go b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/models/repo.go
new file mode 100644
index 000000000..25e42eaf5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/models/repo.go
@@ -0,0 +1,7 @@
+package models
+
+type Repo struct{}
+
+func (r *Repo) Save() bool {
+	return false
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/models/user.go
new file mode 100644
index 000000000..7307a10d6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-assignment-chain/models/user.go
@@ -0,0 +1,7 @@
+package models
+
+type User struct{}
+
+func (u *User) Save() bool {
+	return true
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/cmd/main.go
new file mode 100644
index 000000000..770cb8e77
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/cmd/main.go
@@ -0,0 +1,12 @@
+package main
+
+import "example.com/callresult/models"
+
+func GetUser(name string) *models.User {
+	return &models.User{Name: name}
+}
+
+func processUser() {
+	user := GetUser("alice")
+	user.Save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/go.mod b/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/go.mod
new file mode 100644
index 000000000..a08a7afac
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/go.mod
@@ -0,0 +1,3 @@
+module example.com/callresult
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/models/user.go
new file mode 100644
index 000000000..0e78a30a8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-call-result-binding/models/user.go
@@ -0,0 +1,9 @@
+package models
+
+type User struct {
+	Name string
+}
+
+func (u *User) Save() bool {
+	return true
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-chain-call/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-chain-call/cmd/main.go
new file mode 100644
index 000000000..ed0390d9f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-chain-call/cmd/main.go
@@ -0,0 +1,14 @@
+package main
+
+import "example.com/chaincall/models"
+
+type UserService struct{}
+
+func (s *UserService) GetUser() *models.User {
+	return &models.User{Name: "alice"}
+}
+
+func processUser() {
+	svc := &UserService{}
+	svc.GetUser().Save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-chain-call/go.mod b/gitnexus/test/fixtures/lang-resolution/go-chain-call/go.mod
new file mode 100644
index 000000000..cc2e4ab02
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-chain-call/go.mod
@@ -0,0 +1,3 @@
+module example.com/chaincall
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-chain-call/models/repo.go b/gitnexus/test/fixtures/lang-resolution/go-chain-call/models/repo.go
new file mode 100644
index 000000000..5abb2e7d8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-chain-call/models/repo.go
@@ -0,0 +1,9 @@
+package models
+
+type Repo struct {
+	Name string
+}
+
+func (r *Repo) Save() bool {
+	return true
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-chain-call/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-chain-call/models/user.go
new file mode 100644
index 000000000..0e78a30a8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-chain-call/models/user.go
@@ -0,0 +1,9 @@
+package models
+
+type User struct {
+	Name string
+}
+
+func (u *User) Save() bool {
+	return true
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/cmd/server/internal/config/config.go b/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/cmd/server/internal/config/config.go
new file mode 100644
index 000000000..326ce8291
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/cmd/server/internal/config/config.go
@@ -0,0 +1,5 @@
+package config
+
+func Load() string {
+	return "loaded"
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/cmd/server/main.go b/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/cmd/server/main.go
new file mode 100644
index 000000000..b9913521a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/cmd/server/main.go
@@ -0,0 +1,7 @@
+package main
+
+import "myapp/cmd/server/internal/config"
+
+func main() {
+	config.Load()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/go.mod b/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/go.mod
new file mode 100644
index 000000000..505b313a9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-cmd-helper/go.mod
@@ -0,0 +1,3 @@
+module myapp
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/cmd/main.go
new file mode 100644
index 000000000..c848c9368
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/cmd/main.go
@@ -0,0 +1,11 @@
+package main
+
+import "example.com/go-deep-field-chain/models"
+
+func processUser(user models.User) {
+	// 2-level chain: user.Address → Address, then .Save() → Address#Save
+	user.Address.Save()
+
+	// 3-level chain: user.Address → Address, .City → City, .GetName() → City#GetName
+	user.Address.City.GetName()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/go.mod b/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/go.mod
new file mode 100644
index 000000000..f9f8e3511
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/go.mod
@@ -0,0 +1,3 @@
+module example.com/go-deep-field-chain
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/models/models.go b/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/models/models.go
new file mode 100644
index 000000000..ac615e385
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-deep-field-chain/models/models.go
@@ -0,0 +1,27 @@
+package models
+
+type City struct {
+	ZipCode string
+}
+
+func (c *City) GetName() string {
+	return "city"
+}
+
+type Address struct {
+	City   City
+	Street string
+}
+
+func (a *Address) Save() bool {
+	return true
+}
+
+type User struct {
+	Name    string
+	Address Address
+}
+
+func (u *User) Greet() string {
+	return u.Name
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-field-types/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-field-types/cmd/main.go
new file mode 100644
index 000000000..50b64f816
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-field-types/cmd/main.go
@@ -0,0 +1,8 @@
+package main
+
+import "example.com/go-field-types/models"
+
+func processUser(user models.User) {
+	// Field-access chain: user.Address → Address, then .Save() → Address#Save
+	user.Address.Save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-field-types/go.mod b/gitnexus/test/fixtures/lang-resolution/go-field-types/go.mod
new file mode 100644
index 000000000..86923ee6f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-field-types/go.mod
@@ -0,0 +1,3 @@
+module example.com/go-field-types
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-field-types/models/models.go b/gitnexus/test/fixtures/lang-resolution/go-field-types/models/models.go
new file mode 100644
index 000000000..e769f2bbf
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-field-types/models/models.go
@@ -0,0 +1,18 @@
+package models
+
+type Address struct {
+	City string
+}
+
+func (a *Address) Save() bool {
+	return true
+}
+
+type User struct {
+	Name    string
+	Address Address
+}
+
+func (u *User) Greet() string {
+	return u.Name
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/cmd/main.go
new file mode 100644
index 000000000..7e2699d27
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/cmd/main.go
@@ -0,0 +1,17 @@
+package main
+
+import "example.com/for-call-expr/models"
+
+func processUsers() {
+	for _, user := range models.GetUsers() {
+		user.Save()
+	}
+}
+
+func processRepos() {
+	for _, repo := range models.GetRepos() {
+		repo.Save()
+	}
+}
+
+func main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/go.mod b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/go.mod
new file mode 100644
index 000000000..bd8bec4d7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/go.mod
@@ -0,0 +1,3 @@
+module example.com/for-call-expr
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/models/repo.go b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/models/repo.go
new file mode 100644
index 000000000..5876603f1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/models/repo.go
@@ -0,0 +1,13 @@
+package models
+
+type Repo struct {
+	Name string
+}
+
+func (r *Repo) Save() error {
+	return nil
+}
+
+func GetRepos() []Repo {
+	return []Repo{{Name: "main"}}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/models/user.go
new file mode 100644
index 000000000..97237bb4f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-for-call-expr/models/user.go
@@ -0,0 +1,13 @@
+package models
+
+type User struct {
+	Name string
+}
+
+func (u *User) Save() error {
+	return nil
+}
+
+func GetUsers() []User {
+	return []User{{Name: "alice"}}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-inc-dec-write-access/main.go b/gitnexus/test/fixtures/lang-resolution/go-inc-dec-write-access/main.go
new file mode 100644
index 000000000..51d2a4d2c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-inc-dec-write-access/main.go
@@ -0,0 +1,15 @@
+package main
+
+type Counter struct {
+	Count int
+	Total int
+}
+
+func increment(c *Counter) {
+	c.Count++
+	c.Total++
+}
+
+func decrement(c *Counter) {
+	c.Count--
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-map-range/main.go b/gitnexus/test/fixtures/lang-resolution/go-map-range/main.go
new file mode 100644
index 000000000..344206dcd
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-map-range/main.go
@@ -0,0 +1,9 @@
+package main
+
+import "models"
+
+func processMap(userMap map[string]models.User) {
+	for _, user := range userMap {
+		user.Save()
+	}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-map-range/models/repo.go b/gitnexus/test/fixtures/lang-resolution/go-map-range/models/repo.go
new file mode 100644
index 000000000..ad306c835
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-map-range/models/repo.go
@@ -0,0 +1,7 @@
+package models
+
+type Repo struct {
+	Path string
+}
+
+func (r Repo) Save() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-map-range/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-map-range/models/user.go
new file mode 100644
index 000000000..0c7df99e9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-map-range/models/user.go
@@ -0,0 +1,7 @@
+package models
+
+type User struct {
+	Name string
+}
+
+func (u User) Save() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/cmd/main.go
new file mode 100644
index 000000000..32c6ab877
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/cmd/main.go
@@ -0,0 +1,14 @@
+package main
+
+import "example.com/methodchain/models"
+
+func GetUser() *models.User {
+	return &models.User{}
+}
+
+func processChain() {
+	user := GetUser()
+	addr := user.Address
+	city := addr.GetCity()
+	city.Save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/go.mod b/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/go.mod
new file mode 100644
index 000000000..fba59f405
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/go.mod
@@ -0,0 +1,3 @@
+module example.com/methodchain
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/models/user.go
new file mode 100644
index 000000000..1cf6b6ca8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-method-chain-binding/models/user.go
@@ -0,0 +1,21 @@
+package models
+
+type City struct {
+	Name string
+}
+
+func (c *City) Save() bool {
+	return true
+}
+
+type Address struct {
+	City City
+}
+
+func (a *Address) GetCity() *City {
+	return &a.City
+}
+
+type User struct {
+	Address Address
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/cmd/main.go
new file mode 100644
index 000000000..5269dd6cf
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/cmd/main.go
@@ -0,0 +1,11 @@
+package main
+
+import "example.com/go-mixed-chain/models"
+
+func processWithService(svc *models.UserService) {
+	svc.GetUser().Address.Save()
+}
+
+func processWithUser(user *models.User) {
+	user.GetAddress().City.GetName()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/go.mod b/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/go.mod
new file mode 100644
index 000000000..e0b17c82b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/go.mod
@@ -0,0 +1,3 @@
+module example.com/go-mixed-chain
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/models/models.go b/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/models/models.go
new file mode 100644
index 000000000..7e19915c7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-mixed-chain/models/models.go
@@ -0,0 +1,32 @@
+package models
+
+type City struct {
+	Name string
+}
+
+func (c *City) GetName() string {
+	return c.Name
+}
+
+type Address struct {
+	City   City
+	Street string
+}
+
+func (a *Address) Save() {
+}
+
+type User struct {
+	Name    string
+	Address Address
+}
+
+func (u *User) GetAddress() *Address {
+	return &u.Address
+}
+
+type UserService struct{}
+
+func (s *UserService) GetUser() *User {
+	return &User{}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/cmd/main.go b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/cmd/main.go
new file mode 100644
index 000000000..b38f62555
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/cmd/main.go
@@ -0,0 +1,18 @@
+package main
+
+import "example.com/go-nullable-receiver/models"
+
+func findUser() *models.User {
+	return &models.User{}
+}
+
+func findRepo() *models.Repo {
+	return &models.Repo{}
+}
+
+func processEntities() {
+	var user *models.User = findUser()
+	var repo *models.Repo = findRepo()
+	user.Save()
+	repo.Save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/go.mod b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/go.mod
new file mode 100644
index 000000000..5a9859a88
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/go.mod
@@ -0,0 +1,3 @@
+module example.com/go-nullable-receiver
+
+go 1.21
diff --git a/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/models/repo.go b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/models/repo.go
new file mode 100644
index 000000000..25e42eaf5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/models/repo.go
@@ -0,0 +1,7 @@
+package models
+
+type Repo struct{}
+
+func (r *Repo) Save() bool {
+	return false
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/models/user.go b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/models/user.go
new file mode 100644
index 000000000..7307a10d6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-nullable-receiver/models/user.go
@@ -0,0 +1,7 @@
+package models
+
+type User struct{}
+
+func (u *User) Save() bool {
+	return true
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/go-write-access/main.go b/gitnexus/test/fixtures/lang-resolution/go-write-access/main.go
new file mode 100644
index 000000000..204fbda52
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/go-write-access/main.go
@@ -0,0 +1,15 @@
+package main
+
+type Address struct {
+	City string
+}
+
+type User struct {
+	Name    string
+	Address Address
+}
+
+func updateUser(user *User) {
+	user.Name = "Alice"
+	user.Address = Address{City: "NYC"}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/App.java b/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/App.java
new file mode 100644
index 000000000..a41cdbcb3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/App.java
@@ -0,0 +1,17 @@
+import models.User;
+import models.Repo;
+
+public class App {
+    static User getUser() { return new User(); }
+    static Repo getRepo() { return new Repo(); }
+
+    public static void processEntities() {
+        User u = getUser();
+        var alias = u;
+        alias.save();
+
+        Repo r = getRepo();
+        var rAlias = r;
+        rAlias.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/models/Repo.java
new file mode 100644
index 000000000..cf3712bbc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/models/Repo.java
@@ -0,0 +1,7 @@
+package models;
+
+public class Repo {
+    public boolean save() {
+        return false;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/models/User.java
new file mode 100644
index 000000000..e8dacc136
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-assignment-chain/models/User.java
@@ -0,0 +1,7 @@
+package models;
+
+public class User {
+    public boolean save() {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-call-result-binding/App.java b/gitnexus/test/fixtures/lang-resolution/java-call-result-binding/App.java
new file mode 100644
index 000000000..387648704
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-call-result-binding/App.java
@@ -0,0 +1,10 @@
+public class App {
+    static User getUser(String name) {
+        return new User(name);
+    }
+
+    void processUser() {
+        var user = getUser("alice");
+        user.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-call-result-binding/User.java b/gitnexus/test/fixtures/lang-resolution/java-call-result-binding/User.java
new file mode 100644
index 000000000..3d9d41eba
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-call-result-binding/User.java
@@ -0,0 +1,11 @@
+public class User {
+    private String name;
+
+    public User(String name) {
+        this.name = name;
+    }
+
+    public boolean save() {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-chain-call/App.java b/gitnexus/test/fixtures/lang-resolution/java-chain-call/App.java
new file mode 100644
index 000000000..8e58ee1ca
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-chain-call/App.java
@@ -0,0 +1,8 @@
+import services.UserService;
+
+public class App {
+    public static void processUser() {
+        UserService svc = new UserService();
+        svc.getUser().save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-chain-call/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-chain-call/models/Repo.java
new file mode 100644
index 000000000..4908ace6d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-chain-call/models/Repo.java
@@ -0,0 +1,7 @@
+package models;
+
+public class Repo {
+    public boolean save() {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-chain-call/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-chain-call/models/User.java
new file mode 100644
index 000000000..e8dacc136
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-chain-call/models/User.java
@@ -0,0 +1,7 @@
+package models;
+
+public class User {
+    public boolean save() {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-chain-call/services/UserService.java b/gitnexus/test/fixtures/lang-resolution/java-chain-call/services/UserService.java
new file mode 100644
index 000000000..fe18a97b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-chain-call/services/UserService.java
@@ -0,0 +1,9 @@
+package services;
+
+import models.User;
+
+public class UserService {
+    public User getUser() {
+        return new User();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/App.java b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/App.java
new file mode 100644
index 000000000..a158e6168
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/App.java
@@ -0,0 +1,11 @@
+import models.User;
+
+public class App {
+    public static void processUser(User user) {
+        // 2-level chain: user.address → Address, then .save() → Address#save
+        user.address.save();
+
+        // 3-level chain: user.address → Address, .city → City, .getName() → City#getName
+        user.address.city.getName();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/Address.java b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/Address.java
new file mode 100644
index 000000000..c89d8132c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/Address.java
@@ -0,0 +1,10 @@
+package models;
+
+public class Address {
+    public City city;
+    public String street;
+
+    public void save() {
+        // persist address
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/City.java b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/City.java
new file mode 100644
index 000000000..c843c5ccc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/City.java
@@ -0,0 +1,9 @@
+package models;
+
+public class City {
+    public String zipCode;
+
+    public String getName() {
+        return "city";
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/User.java
new file mode 100644
index 000000000..dc3b7e76a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-deep-field-chain/models/User.java
@@ -0,0 +1,10 @@
+package models;
+
+public class User {
+    public String name;
+    public Address address;
+
+    public String greet() {
+        return this.name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-enum-static-call/src/App.java b/gitnexus/test/fixtures/lang-resolution/java-enum-static-call/src/App.java
new file mode 100644
index 000000000..587716581
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-enum-static-call/src/App.java
@@ -0,0 +1,6 @@
+public class App {
+    public void process() {
+        Status s = Status.fromCode(200);
+        s.label();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-enum-static-call/src/Status.java b/gitnexus/test/fixtures/lang-resolution/java-enum-static-call/src/Status.java
new file mode 100644
index 000000000..a533cbf07
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-enum-static-call/src/Status.java
@@ -0,0 +1,12 @@
+public enum Status {
+    OK,
+    ERROR;
+
+    public static Status fromCode(int code) {
+        return code == 200 ? OK : ERROR;
+    }
+
+    public String label() {
+        return this.name().toLowerCase();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-field-types/App.java b/gitnexus/test/fixtures/lang-resolution/java-field-types/App.java
new file mode 100644
index 000000000..1ba64e00e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-field-types/App.java
@@ -0,0 +1,8 @@
+import models.User;
+
+public class App {
+    public static void processUser(User user) {
+        // Field-access chain: user.address → Address, then .save() → Address#save
+        user.address.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-field-types/models/Address.java b/gitnexus/test/fixtures/lang-resolution/java-field-types/models/Address.java
new file mode 100644
index 000000000..40107bbf1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-field-types/models/Address.java
@@ -0,0 +1,9 @@
+package models;
+
+public class Address {
+    public String city;
+
+    public void save() {
+        // persist address
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-field-types/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-field-types/models/User.java
new file mode 100644
index 000000000..dc3b7e76a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-field-types/models/User.java
@@ -0,0 +1,10 @@
+package models;
+
+public class User {
+    public String name;
+    public Address address;
+
+    public String greet() {
+        return this.name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/Main.java b/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/Main.java
new file mode 100644
index 000000000..38b79025f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/Main.java
@@ -0,0 +1,16 @@
+import models.User;
+import models.Repo;
+
+public class Main {
+    void processUsers() {
+        for (User user : User.getUsers()) {
+            user.save();
+        }
+    }
+
+    void processRepos() {
+        for (Repo repo : Repo.getRepos()) {
+            repo.save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/models/Repo.java
new file mode 100644
index 000000000..be7f2b830
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/models/Repo.java
@@ -0,0 +1,17 @@
+package models;
+
+import java.util.List;
+
+public class Repo {
+    private String name;
+
+    public Repo(String name) {
+        this.name = name;
+    }
+
+    public void save() {}
+
+    public static List<Repo> getRepos() {
+        return List.of(new Repo("main"));
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/models/User.java
new file mode 100644
index 000000000..f6470958d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-foreach-call-expr/models/User.java
@@ -0,0 +1,17 @@
+package models;
+
+import java.util.List;
+
+public class User {
+    private String name;
+
+    public User(String name) {
+        this.name = name;
+    }
+
+    public void save() {}
+
+    public static List<User> getUsers() {
+        return List.of(new User("alice"));
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-foreach/App.java b/gitnexus/test/fixtures/lang-resolution/java-foreach/App.java
new file mode 100644
index 000000000..a3675e102
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-foreach/App.java
@@ -0,0 +1,13 @@
+import models.User;
+import models.Repo;
+
+public class App {
+    public static void processEntities(User[] users, Repo[] repos) {
+        for (User user : users) {
+            user.save();
+        }
+        for (Repo repo : repos) {
+            repo.save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-foreach/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-foreach/models/Repo.java
new file mode 100644
index 000000000..cf3712bbc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-foreach/models/Repo.java
@@ -0,0 +1,7 @@
+package models;
+
+public class Repo {
+    public boolean save() {
+        return false;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-foreach/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-foreach/models/User.java
new file mode 100644
index 000000000..e8dacc136
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-foreach/models/User.java
@@ -0,0 +1,7 @@
+package models;
+
+public class User {
+    public boolean save() {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/A.java b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/A.java
new file mode 100644
index 000000000..f2a2c332d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/A.java
@@ -0,0 +1,5 @@
+package models;
+
+public class A {
+    public Greeting greet() { return new Greeting(); }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/B.java b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/B.java
new file mode 100644
index 000000000..54149019e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/B.java
@@ -0,0 +1,3 @@
+package models;
+
+public class B extends A {}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/C.java b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/C.java
new file mode 100644
index 000000000..3514bf12c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/C.java
@@ -0,0 +1,3 @@
+package models;
+
+public class C extends B {}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/Greeting.java b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/Greeting.java
new file mode 100644
index 000000000..fda3b67e5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/models/Greeting.java
@@ -0,0 +1,5 @@
+package models;
+
+public class Greeting {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/services/App.java b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/services/App.java
new file mode 100644
index 000000000..f7ec17158
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-grandparent-resolution/src/services/App.java
@@ -0,0 +1,10 @@
+package services;
+
+import models.C;
+
+public class App {
+    public void process() {
+        C c = new C();
+        c.greet().save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/models/Repo.java
new file mode 100644
index 000000000..acd3d3991
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/models/Repo.java
@@ -0,0 +1,5 @@
+package models;
+
+public class Repo {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/models/User.java
new file mode 100644
index 000000000..4bb729993
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/models/User.java
@@ -0,0 +1,5 @@
+package models;
+
+public class User {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/services/App.java b/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/services/App.java
new file mode 100644
index 000000000..fd23b5f42
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-instanceof-pattern/services/App.java
@@ -0,0 +1,12 @@
+package services;
+
+import models.User;
+import models.Repo;
+
+public class App {
+    public void process(Object obj) {
+        if (obj instanceof User user) {
+            user.save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/App.java b/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/App.java
new file mode 100644
index 000000000..2641fc4a4
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/App.java
@@ -0,0 +1,18 @@
+package src;
+
+import java.util.Map;
+import java.util.List;
+
+public class App {
+    public void processValues(Map<String, User> data) {
+        for (var user : data.values()) {
+            user.save();
+        }
+    }
+
+    public void processList(List<User> users) {
+        for (var user : users) {
+            user.save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/Repo.java
new file mode 100644
index 000000000..2ec27c97a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/Repo.java
@@ -0,0 +1,7 @@
+package src;
+
+public class Repo {
+    private String name;
+    public Repo(String name) { this.name = name; }
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/User.java b/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/User.java
new file mode 100644
index 000000000..6fe76df2a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-map-keys-values/src/User.java
@@ -0,0 +1,7 @@
+package src;
+
+public class User {
+    private String name;
+    public User(String name) { this.name = name; }
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-method-chain-binding/App.java b/gitnexus/test/fixtures/lang-resolution/java-method-chain-binding/App.java
new file mode 100644
index 000000000..6679b6fc8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-method-chain-binding/App.java
@@ -0,0 +1,12 @@
+class App {
+    static User getUser() {
+        return new User(new Address(new City("NYC")));
+    }
+
+    void processChain() {
+        var user = getUser();
+        var addr = user.address;
+        var city = addr.getCity();
+        city.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-method-chain-binding/Models.java b/gitnexus/test/fixtures/lang-resolution/java-method-chain-binding/Models.java
new file mode 100644
index 000000000..5f6d0cf81
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-method-chain-binding/Models.java
@@ -0,0 +1,16 @@
+class City {
+    String name;
+    City(String name) { this.name = name; }
+    boolean save() { return true; }
+}
+
+class Address {
+    City city;
+    Address(City city) { this.city = city; }
+    City getCity() { return city; }
+}
+
+class User {
+    Address address;
+    User(Address address) { this.address = address; }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/App.java b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/App.java
new file mode 100644
index 000000000..c3d0eeff4
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/App.java
@@ -0,0 +1,12 @@
+import services.UserService;
+import models.User;
+
+public class App {
+    public static void processWithService(UserService svc) {
+        svc.getUser().address.save();
+    }
+
+    public static void processWithUser(User user) {
+        user.getAddress().city.getName();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/Address.java b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/Address.java
new file mode 100644
index 000000000..b37a7f78d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/Address.java
@@ -0,0 +1,8 @@
+package models;
+
+public class Address {
+    public City city;
+
+    public void save() {
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/City.java b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/City.java
new file mode 100644
index 000000000..c75cf7e2e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/City.java
@@ -0,0 +1,7 @@
+package models;
+
+public class City {
+    public String getName() {
+        return "city";
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/User.java
new file mode 100644
index 000000000..3a9355ded
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/models/User.java
@@ -0,0 +1,9 @@
+package models;
+
+public class User {
+    public Address address;
+
+    public Address getAddress() {
+        return this.address;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/services/UserService.java b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/services/UserService.java
new file mode 100644
index 000000000..fe18a97b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-mixed-chain/services/UserService.java
@@ -0,0 +1,9 @@
+package services;
+
+import models.User;
+
+public class UserService {
+    public User getUser() {
+        return new User();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/App.java b/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/App.java
new file mode 100644
index 000000000..0ea99662a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/App.java
@@ -0,0 +1,19 @@
+import models.User;
+import models.Repo;
+
+public class App {
+    public static void processEntities() {
+        User user = findUser();
+        Repo repo = findRepo();
+        user.save();
+        repo.save();
+    }
+
+    private static User findUser() {
+        return new User();
+    }
+
+    private static Repo findRepo() {
+        return new Repo();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/models/Repo.java
new file mode 100644
index 000000000..cf3712bbc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/models/Repo.java
@@ -0,0 +1,7 @@
+package models;
+
+public class Repo {
+    public boolean save() {
+        return false;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/models/User.java
new file mode 100644
index 000000000..e8dacc136
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-nullable-receiver/models/User.java
@@ -0,0 +1,7 @@
+package models;
+
+public class User {
+    public boolean save() {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/App.java b/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/App.java
new file mode 100644
index 000000000..0f1c6d79c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/App.java
@@ -0,0 +1,20 @@
+import models.User;
+import models.Repo;
+
+// Tests that Optional<User> unwraps to User in TypeEnv,
+// so assignment chains from Optional-typed sources resolve correctly.
+public class App {
+    static User findUser() { return new User(); }
+    static Repo findRepo() { return new Repo(); }
+
+    static void processEntities() {
+        // Optional<User> declared — TypeEnv stores "User" (not "Optional")
+        // The alias then propagates User through the chain
+        java.util.Optional<User> opt = java.util.Optional.of(findUser());
+        User user = opt.get();
+        user.save();
+
+        Repo repo = findRepo();
+        repo.save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/models/Repo.java
new file mode 100644
index 000000000..acd3d3991
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/models/Repo.java
@@ -0,0 +1,5 @@
+package models;
+
+public class Repo {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/models/User.java
new file mode 100644
index 000000000..4bb729993
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-optional-receiver/models/User.java
@@ -0,0 +1,5 @@
+package models;
+
+public class User {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-overload-param-types/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-overload-param-types/models/User.java
new file mode 100644
index 000000000..c45c00c5f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-overload-param-types/models/User.java
@@ -0,0 +1,7 @@
+package models;
+
+public class User {
+    public String getName() {
+        return "user";
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-overload-param-types/models/UserService.java b/gitnexus/test/fixtures/lang-resolution/java-overload-param-types/models/UserService.java
new file mode 100644
index 000000000..b9c022017
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-overload-param-types/models/UserService.java
@@ -0,0 +1,16 @@
+package models;
+
+public class UserService {
+    public User lookup(int id) {
+        return new User();
+    }
+
+    public User lookup(String name) {
+        return new User();
+    }
+
+    public void run() {
+        lookup(42);        // literal int → should disambiguate to lookup(int)
+        lookup("alice");   // literal String → should disambiguate to lookup(String)
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/App.java b/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/App.java
new file mode 100644
index 000000000..1d28070fc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/App.java
@@ -0,0 +1,19 @@
+import models.User;
+import models.Repo;
+
+public class App {
+    public static void processAny(Object obj) {
+        switch (obj) {
+            case User user -> user.save();
+            case Repo repo -> repo.save();
+            default -> {}
+        }
+    }
+
+    public static void handleUser(Object obj) {
+        switch (obj) {
+            case User user -> user.save();
+            default -> {}
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/models/Repo.java b/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/models/Repo.java
new file mode 100644
index 000000000..acd3d3991
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/models/Repo.java
@@ -0,0 +1,5 @@
+package models;
+
+public class Repo {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/models/User.java
new file mode 100644
index 000000000..4bb729993
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-switch-pattern/models/User.java
@@ -0,0 +1,5 @@
+package models;
+
+public class User {
+    public void save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-virtual-dispatch/models/App.java b/gitnexus/test/fixtures/lang-resolution/java-virtual-dispatch/models/App.java
new file mode 100644
index 000000000..1e82b84c2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-virtual-dispatch/models/App.java
@@ -0,0 +1,31 @@
+package models;
+
+// All classes in same file so parentMap captures the extends relationship
+
+class Animal {
+    public String speak() {
+        return "...";
+    }
+}
+
+class Dog extends Animal {
+    public String speak() {
+        return "woof";
+    }
+
+    public String fetchBall() {
+        return "ball";
+    }
+}
+
+public class App {
+    public void run() {
+        // Virtual dispatch: declared as Animal, constructed as Dog
+        Animal animal = new Dog();
+        animal.fetchBall();  // Only Dog has fetchBall — proves virtual dispatch override
+
+        // Direct type: no override needed
+        Dog dog = new Dog();
+        dog.fetchBall();     // Direct resolution to Dog#fetchBall
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-write-access/App.java b/gitnexus/test/fixtures/lang-resolution/java-write-access/App.java
new file mode 100644
index 000000000..795e01a8a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-write-access/App.java
@@ -0,0 +1,9 @@
+import models.User;
+import models.Address;
+
+public class App {
+    public static void updateUser(User user) {
+        user.name = "Alice";
+        user.address = new Address();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-write-access/models/Address.java b/gitnexus/test/fixtures/lang-resolution/java-write-access/models/Address.java
new file mode 100644
index 000000000..85e1e79a8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-write-access/models/Address.java
@@ -0,0 +1,5 @@
+package models;
+
+public class Address {
+    public String city;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/java-write-access/models/User.java b/gitnexus/test/fixtures/lang-resolution/java-write-access/models/User.java
new file mode 100644
index 000000000..ec750c4f9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/java-write-access/models/User.java
@@ -0,0 +1,6 @@
+package models;
+
+public class User {
+    public String name;
+    public Address address;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/app.js b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/app.js
new file mode 100644
index 000000000..349625a47
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/app.js
@@ -0,0 +1,8 @@
+const { UserService } = require('./service');
+
+function processUser() {
+  const svc = new UserService();
+  svc.getUser().save();
+}
+
+module.exports = { processUser };
diff --git a/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/repo.js b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/repo.js
new file mode 100644
index 000000000..41ab272df
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/repo.js
@@ -0,0 +1,7 @@
+class Repo {
+  save() {
+    return true;
+  }
+}
+
+module.exports = { Repo };
diff --git a/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/service.js b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/service.js
new file mode 100644
index 000000000..ab665e280
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/service.js
@@ -0,0 +1,12 @@
+const { User } = require('./user');
+
+class UserService {
+  /**
+   * @returns {User}
+   */
+  getUser() {
+    return new User();
+  }
+}
+
+module.exports = { UserService };
diff --git a/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/user.js b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/user.js
new file mode 100644
index 000000000..62f995fae
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/javascript-chain-call/src/user.js
@@ -0,0 +1,7 @@
+class User {
+  save() {
+    return true;
+  }
+}
+
+module.exports = { User };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/app.js b/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/app.js
new file mode 100644
index 000000000..0b41f2e58
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/app.js
@@ -0,0 +1,6 @@
+const { getUser } = require('./service');
+
+function processUser() {
+  const user = getUser('alice');
+  user.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/models.js b/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/models.js
new file mode 100644
index 000000000..7f19a622d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/models.js
@@ -0,0 +1,11 @@
+class User {
+  constructor(name) {
+    this.name = name;
+  }
+
+  save() {
+    return true;
+  }
+}
+
+module.exports = { User };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/service.js b/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/service.js
new file mode 100644
index 000000000..88f942207
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-call-result-binding/service.js
@@ -0,0 +1,11 @@
+const { User } = require('./models');
+
+/**
+ * @param {string} name
+ * @returns {User}
+ */
+function getUser(name) {
+  return new User(name);
+}
+
+module.exports = { getUser };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-field-types/models.js b/gitnexus/test/fixtures/lang-resolution/js-field-types/models.js
new file mode 100644
index 000000000..4d9d45fa4
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-field-types/models.js
@@ -0,0 +1,26 @@
+class Address {
+  city = '';
+
+  save() {
+    // persist address
+  }
+}
+
+class User {
+  name = '';
+  address = new Address();
+
+  greet() {
+    return this.name;
+  }
+}
+
+class Config {
+  static DEFAULT = new Config();
+
+  validate() {
+    return true;
+  }
+}
+
+module.exports = { Address, User, Config };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-field-types/service.js b/gitnexus/test/fixtures/lang-resolution/js-field-types/service.js
new file mode 100644
index 000000000..9f9494621
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-field-types/service.js
@@ -0,0 +1,9 @@
+const { User, Config } = require('./models');
+
+function processUser(user) {
+  user.address.save();
+}
+
+function validateConfig() {
+  Config.DEFAULT.validate();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/js-fixpoint-for-loop/app.js b/gitnexus/test/fixtures/lang-resolution/js-fixpoint-for-loop/app.js
new file mode 100644
index 000000000..6d25720eb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-fixpoint-for-loop/app.js
@@ -0,0 +1,8 @@
+const { getUsers } = require('./models');
+
+function process() {
+  const users = getUsers();
+  for (const u of users) {
+    u.save();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/js-fixpoint-for-loop/models.js b/gitnexus/test/fixtures/lang-resolution/js-fixpoint-for-loop/models.js
new file mode 100644
index 000000000..28cbfb5e8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-fixpoint-for-loop/models.js
@@ -0,0 +1,13 @@
+/**
+ * @class
+ */
+class User {
+  save() {}
+}
+
+/**
+ * @returns {User[]}
+ */
+function getUsers() { return []; }
+
+module.exports = { User, getUsers };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/app.js b/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/app.js
new file mode 100644
index 000000000..f9e08c969
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/app.js
@@ -0,0 +1,11 @@
+const { User } = require('./user');
+const { Repo } = require('./repo');
+
+/**
+ * @param {User | null} user
+ * @param {Repo | null} repo
+ */
+function processEntities(user, repo) {
+  if (user) user.save();
+  if (repo) repo.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/repo.js b/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/repo.js
new file mode 100644
index 000000000..41ab63ddd
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/repo.js
@@ -0,0 +1,4 @@
+class Repo {
+  save() { return true; }
+}
+module.exports = { Repo };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/user.js b/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/user.js
new file mode 100644
index 000000000..e11c8bc1a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-nullable-receiver/src/user.js
@@ -0,0 +1,4 @@
+class User {
+  save() { return true; }
+}
+module.exports = { User };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/app.js b/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/app.js
new file mode 100644
index 000000000..0ce2b9da2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/app.js
@@ -0,0 +1,7 @@
+const { getUser } = require('./service');
+
+function processDestructured() {
+  const user = getUser();
+  const { address } = user;
+  address.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/models.js b/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/models.js
new file mode 100644
index 000000000..31cb47c9a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/models.js
@@ -0,0 +1,19 @@
+/**
+ * @class
+ */
+class Address {
+  /** @returns {boolean} */
+  save() { return true; }
+}
+
+/**
+ * @class
+ */
+class User {
+  constructor() {
+    /** @type {Address} */
+    this.address = new Address();
+  }
+}
+
+module.exports = { Address, User };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/service.js b/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/service.js
new file mode 100644
index 000000000..e8fc4565b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-object-destructuring/service.js
@@ -0,0 +1,8 @@
+const { User } = require('./models');
+
+/**
+ * @returns {User}
+ */
+function getUser() { return new User(); }
+
+module.exports = { getUser };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-write-access/models.js b/gitnexus/test/fixtures/lang-resolution/js-write-access/models.js
new file mode 100644
index 000000000..ac80db7e1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-write-access/models.js
@@ -0,0 +1,10 @@
+class Address {
+    city = '';
+}
+
+class User {
+    name = '';
+    address = null;
+}
+
+module.exports = { Address, User };
diff --git a/gitnexus/test/fixtures/lang-resolution/js-write-access/service.js b/gitnexus/test/fixtures/lang-resolution/js-write-access/service.js
new file mode 100644
index 000000000..f3e681179
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/js-write-access/service.js
@@ -0,0 +1,7 @@
+const { User, Address } = require('./models');
+
+function updateUser() {
+    const user = new User();
+    user.name = "Alice";
+    user.address = new Address();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/App.kt
new file mode 100644
index 000000000..d7cb22762
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/App.kt
@@ -0,0 +1,12 @@
+fun getUser(): User = User()
+fun getRepo(): Repo = Repo()
+
+fun processEntities() {
+    val u: User = getUser()
+    val alias = u
+    alias.save()
+
+    val r: Repo = getRepo()
+    val rAlias = r
+    rAlias.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/models/Repo.kt
new file mode 100644
index 000000000..2a2f09bf5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/models/Repo.kt
@@ -0,0 +1,3 @@
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/models/User.kt
new file mode 100644
index 000000000..e5d4114ba
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-assignment-chain/models/User.kt
@@ -0,0 +1,3 @@
+class User {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-call-result-binding/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-call-result-binding/User.kt
new file mode 100644
index 000000000..9a1e72ee3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-call-result-binding/User.kt
@@ -0,0 +1,14 @@
+class User(val name: String) {
+    fun save(): Boolean {
+        return true
+    }
+}
+
+fun getUser(name: String): User {
+    return User(name)
+}
+
+fun processUser() {
+    val user = getUser("alice")
+    user.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/App.kt
new file mode 100644
index 000000000..a15d839a6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/App.kt
@@ -0,0 +1,7 @@
+import models.User
+import services.UserService
+
+fun processUser() {
+    val svc = UserService()
+    svc.getUser().save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/Repo.kt
new file mode 100644
index 000000000..8e31ab2a0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/Repo.kt
@@ -0,0 +1,5 @@
+package models
+
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/User.kt
new file mode 100644
index 000000000..494376e42
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/User.kt
@@ -0,0 +1,5 @@
+package models
+
+class User {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/UserService.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/UserService.kt
new file mode 100644
index 000000000..e091d77a9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-chain-call/src/UserService.kt
@@ -0,0 +1,9 @@
+package services
+
+import models.User
+
+class UserService {
+    fun getUser(): User {
+        return User()
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/App.kt
new file mode 100644
index 000000000..dae685000
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/App.kt
@@ -0,0 +1,14 @@
+// Assignment chain with typed parameter propagation.
+// Tests that extractKotlinPendingAssignment handles val alias = u
+// where u comes from an explicit typed declaration.
+fun processUser() {
+    val u: User = User()
+    val alias = u
+    alias.save()
+}
+
+fun processRepo() {
+    val r: Repo = Repo()
+    val alias = r
+    alias.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/models/Repo.kt
new file mode 100644
index 000000000..2a2f09bf5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/models/Repo.kt
@@ -0,0 +1,3 @@
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/models/User.kt
new file mode 100644
index 000000000..e5d4114ba
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-class-method-chain/models/User.kt
@@ -0,0 +1,3 @@
+class User {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-data-class-fields/Models.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-data-class-fields/Models.kt
new file mode 100644
index 000000000..837c23633
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-data-class-fields/Models.kt
@@ -0,0 +1,13 @@
+class Address {
+    var city: String = ""
+
+    fun save() {
+        // persist address
+    }
+}
+
+data class User(
+    val name: String,
+    val address: Address,
+    val age: Int
+)
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-data-class-fields/Service.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-data-class-fields/Service.kt
new file mode 100644
index 000000000..706294126
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-data-class-fields/Service.kt
@@ -0,0 +1,4 @@
+fun processUser(user: User) {
+    // Field-access chain: user.address → Address, then .save() → Address#save
+    user.address.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-deep-field-chain/Models.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-deep-field-chain/Models.kt
new file mode 100644
index 000000000..44e658a3b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-deep-field-chain/Models.kt
@@ -0,0 +1,25 @@
+class City {
+    var zipCode: String = ""
+
+    fun getName(): String {
+        return "city"
+    }
+}
+
+class Address {
+    var city: City = City()
+    var street: String = ""
+
+    fun save() {
+        // persist address
+    }
+}
+
+class User {
+    var name: String = ""
+    var address: Address = Address()
+
+    fun greet(): String {
+        return name
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-deep-field-chain/Service.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-deep-field-chain/Service.kt
new file mode 100644
index 000000000..b07cdc865
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-deep-field-chain/Service.kt
@@ -0,0 +1,7 @@
+fun processUser(user: User) {
+    // 2-level chain: user.address → Address, then .save() → Address#save
+    user.address.save()
+
+    // 3-level chain: user.address → Address, .city → City, .getName() → City#getName
+    user.address.city.getName()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-default-params/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-default-params/App.kt
new file mode 100644
index 000000000..2ac83fa15
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-default-params/App.kt
@@ -0,0 +1,6 @@
+fun greet(name: String, greeting: String = "Hello"): String = "$greeting, $name!"
+
+fun process() {
+    greet("Alice")
+    greet("Bob", "Hi")
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-field-types/Models.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-field-types/Models.kt
new file mode 100644
index 000000000..de1190425
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-field-types/Models.kt
@@ -0,0 +1,16 @@
+class Address {
+    var city: String = ""
+
+    fun save() {
+        // persist address
+    }
+}
+
+class User {
+    var name: String = ""
+    var address: Address = Address()
+
+    fun greet(): String {
+        return name
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-field-types/Service.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-field-types/Service.kt
new file mode 100644
index 000000000..706294126
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-field-types/Service.kt
@@ -0,0 +1,4 @@
+fun processUser(user: User) {
+    // Field-access chain: user.address → Address, then .save() → Address#save
+    user.address.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/Main.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/Main.kt
new file mode 100644
index 000000000..763749152
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/Main.kt
@@ -0,0 +1,16 @@
+import models.getUsers
+import models.getRepos
+
+fun processUsers() {
+    for (user in getUsers()) {
+        user.save()
+    }
+}
+
+fun processRepos() {
+    for (repo in getRepos()) {
+        repo.save()
+    }
+}
+
+fun main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/models/Repo.kt
new file mode 100644
index 000000000..6e8ab9698
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/models/Repo.kt
@@ -0,0 +1,9 @@
+package models
+
+class Repo(val name: String) {
+    fun save() {}
+}
+
+fun getRepos(): List<Repo> {
+    return listOf(Repo("main"))
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/models/User.kt
new file mode 100644
index 000000000..82e54c8e9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach-call-expr/models/User.kt
@@ -0,0 +1,9 @@
+package models
+
+class User(val name: String) {
+    fun save() {}
+}
+
+fun getUsers(): List<User> {
+    return listOf(User("alice"))
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/App.kt
new file mode 100644
index 000000000..02896161f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/App.kt
@@ -0,0 +1,16 @@
+package app
+
+import models.User
+import models.Repo
+
+fun processUsers(users: List<User>) {
+    for (user: User in users) {
+        user.save()
+    }
+}
+
+fun processRepos(repos: List<Repo>) {
+    for (repo: Repo in repos) {
+        repo.save()
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/models/Repo.kt
new file mode 100644
index 000000000..8e31ab2a0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/models/Repo.kt
@@ -0,0 +1,5 @@
+package models
+
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/models/User.kt
new file mode 100644
index 000000000..494376e42
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-foreach/models/User.kt
@@ -0,0 +1,5 @@
+package models
+
+class User {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/A.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/A.kt
new file mode 100644
index 000000000..d83147da8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/A.kt
@@ -0,0 +1,5 @@
+package models
+
+open class A {
+    fun greet(): Greeting = Greeting()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/B.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/B.kt
new file mode 100644
index 000000000..8c4f1811a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/B.kt
@@ -0,0 +1,3 @@
+package models
+
+open class B : A()
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/C.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/C.kt
new file mode 100644
index 000000000..1f2a32536
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/C.kt
@@ -0,0 +1,3 @@
+package models
+
+class C : B()
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/Greeting.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/Greeting.kt
new file mode 100644
index 000000000..f458412e8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/models/Greeting.kt
@@ -0,0 +1,5 @@
+package models
+
+class Greeting {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/services/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/services/App.kt
new file mode 100644
index 000000000..4c9f14564
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-grandparent-resolution/services/App.kt
@@ -0,0 +1,8 @@
+package services
+
+import models.C
+
+fun process() {
+    val c = C()
+    c.greet().save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/App.kt
new file mode 100644
index 000000000..08be0d5e1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/App.kt
@@ -0,0 +1,29 @@
+fun processValues(data: HashMap<String, User>) {
+    for (user in data.values) {
+        user.save()
+    }
+}
+
+fun processKeys(data: HashMap<User, Repo>) {
+    for (user in data.keys) {
+        user.save()
+    }
+}
+
+fun processMutableMapValues(data: MutableMap<String, Repo>) {
+    for (repo in data.values) {
+        repo.save()
+    }
+}
+
+fun processList(users: List<User>) {
+    for (user in users) {
+        user.save()
+    }
+}
+
+fun processSet(repos: Set<Repo>) {
+    for (repo in repos) {
+        repo.save()
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/Repo.kt
new file mode 100644
index 000000000..0c3c2725f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/Repo.kt
@@ -0,0 +1,3 @@
+class Repo(val name: String) {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/User.kt
new file mode 100644
index 000000000..414952708
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-map-keys-values/src/User.kt
@@ -0,0 +1,3 @@
+class User(val name: String) {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-method-chain-binding/Models.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-method-chain-binding/Models.kt
new file mode 100644
index 000000000..ce1337136
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-method-chain-binding/Models.kt
@@ -0,0 +1,18 @@
+class City(val name: String) {
+    fun save(): Boolean = true
+}
+
+class Address(val city: City) {
+    fun getCity(): City = city
+}
+
+class User(val address: Address)
+
+fun getUser(): User = User(Address(City("NYC")))
+
+fun processChain() {
+    val user = getUser()
+    val addr = user.address
+    val city = addr.getCity()
+    city.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/models/Repo.kt
new file mode 100644
index 000000000..8e31ab2a0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/models/Repo.kt
@@ -0,0 +1,5 @@
+package models
+
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/models/User.kt
new file mode 100644
index 000000000..77912abe3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/models/User.kt
@@ -0,0 +1,9 @@
+package models
+
+class User {
+    fun save() {}
+}
+
+fun findUser(): User? {
+    return null
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/services/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/services/App.kt
new file mode 100644
index 000000000..393833b6f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-null-check-narrowing/services/App.kt
@@ -0,0 +1,17 @@
+package services
+
+import models.User
+import models.findUser
+
+fun processNullable(x: User?) {
+    if (x != null) {
+        x.save()
+    }
+}
+
+fun processLocalNullable() {
+    val x: User? = findUser()
+    if (x != null) {
+        x.save()
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/models/Repo.kt
new file mode 100644
index 000000000..c337e368c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/models/Repo.kt
@@ -0,0 +1,5 @@
+package models
+
+class Repo(val dbName: String) {
+    fun save(): Boolean = false
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/models/User.kt
new file mode 100644
index 000000000..7b3c39610
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/models/User.kt
@@ -0,0 +1,5 @@
+package models
+
+class User(val name: String) {
+    fun save(): Boolean = true
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/services/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/services/App.kt
new file mode 100644
index 000000000..63a2e97d1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-nullable-receiver/services/App.kt
@@ -0,0 +1,13 @@
+package services
+
+import models.User
+import models.Repo
+
+fun processEntities() {
+    val user: User? = User("alice")
+    val repo: Repo? = Repo("maindb")
+
+    // Safe calls on nullable receivers — should disambiguate via unwrapped type
+    user?.save()
+    repo?.save()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-overload-param-types/services/UserService.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-overload-param-types/services/UserService.kt
new file mode 100644
index 000000000..d81744524
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-overload-param-types/services/UserService.kt
@@ -0,0 +1,18 @@
+package services
+
+class User
+
+class UserService {
+    fun lookup(id: Int): User? {
+        return null
+    }
+
+    fun lookup(name: String): User? {
+        return null
+    }
+
+    fun run() {
+        lookup(42)        // literal Int → should disambiguate to lookup(Int)
+        lookup("alice")   // literal String → should disambiguate to lookup(String)
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/app.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/app.kt
new file mode 100644
index 000000000..fd31c8bbc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/app.kt
@@ -0,0 +1,16 @@
+package app
+
+import models.User
+import models.Repo
+
+fun processUsers(users: List<User>) {
+    for (user in users) {
+        user.save()
+    }
+}
+
+fun processRepos(repos: List<Repo>) {
+    for (repo in repos) {
+        repo.save()
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/models/Repo.kt
new file mode 100644
index 000000000..8e31ab2a0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/models/Repo.kt
@@ -0,0 +1,5 @@
+package models
+
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/models/User.kt
new file mode 100644
index 000000000..494376e42
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-var-foreach/models/User.kt
@@ -0,0 +1,5 @@
+package models
+
+class User {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/models/Animal.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/models/Animal.kt
new file mode 100644
index 000000000..036ef3e8d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/models/Animal.kt
@@ -0,0 +1,5 @@
+package models
+
+open class Animal {
+    open fun speak(): String = "..."
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/models/Dog.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/models/Dog.kt
new file mode 100644
index 000000000..ae7e76a47
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/models/Dog.kt
@@ -0,0 +1,5 @@
+package models
+
+class Dog : Animal() {
+    override fun speak(): String = "woof"
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/services/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/services/App.kt
new file mode 100644
index 000000000..8dc94d6dd
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-virtual-dispatch/services/App.kt
@@ -0,0 +1,9 @@
+package services
+
+import models.Animal
+import models.Dog
+
+fun process() {
+    val animal: Animal = Dog()
+    animal.speak()
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/App.kt
new file mode 100644
index 000000000..8a9929d99
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/App.kt
@@ -0,0 +1,34 @@
+import models.User
+import models.Repo
+import models.Admin
+
+// Three-arm when: each arm should resolve obj to its narrowed type
+fun processThreeArms(obj: Any) {
+    when (obj) {
+        is User -> obj.save()
+        is Repo -> obj.save()
+        is Admin -> obj.save()
+    }
+}
+
+// Multiple method calls within a single when arm
+fun processMultiCall(obj: Any) {
+    when (obj) {
+        is User -> {
+            obj.validate()
+            obj.save()
+        }
+        is Repo -> {
+            obj.validate()
+            obj.save()
+        }
+    }
+}
+
+// when with else branch — else should NOT narrow the type
+fun processWithElse(obj: Any) {
+    when (obj) {
+        is User -> obj.save()
+        else -> println(obj)
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/Admin.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/Admin.kt
new file mode 100644
index 000000000..75cf37876
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/Admin.kt
@@ -0,0 +1,5 @@
+package models
+
+class Admin {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/Repo.kt
new file mode 100644
index 000000000..ec37f1419
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/Repo.kt
@@ -0,0 +1,6 @@
+package models
+
+class Repo {
+    fun save() {}
+    fun validate() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/User.kt
new file mode 100644
index 000000000..bba8106c2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-complex/models/User.kt
@@ -0,0 +1,6 @@
+package models
+
+class User {
+    fun save() {}
+    fun validate() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/App.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/App.kt
new file mode 100644
index 000000000..572a601c8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/App.kt
@@ -0,0 +1,15 @@
+import models.User
+import models.Repo
+
+fun processAny(obj: Any) {
+    when (obj) {
+        is User -> obj.save()
+        is Repo -> obj.save()
+    }
+}
+
+fun handleUser(obj: Any) {
+    when (obj) {
+        is User -> obj.save()
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/models/Repo.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/models/Repo.kt
new file mode 100644
index 000000000..8e31ab2a0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/models/Repo.kt
@@ -0,0 +1,5 @@
+package models
+
+class Repo {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/models/User.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/models/User.kt
new file mode 100644
index 000000000..494376e42
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-when-pattern/models/User.kt
@@ -0,0 +1,5 @@
+package models
+
+class User {
+    fun save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-write-access/Models.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-write-access/Models.kt
new file mode 100644
index 000000000..f55b00f80
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-write-access/Models.kt
@@ -0,0 +1,9 @@
+class Address {
+    var city: String = ""
+}
+
+class User {
+    var name: String = ""
+    var address: Address = Address()
+    var score: Int = 0
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/kotlin-write-access/Service.kt b/gitnexus/test/fixtures/lang-resolution/kotlin-write-access/Service.kt
new file mode 100644
index 000000000..2b486a03b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/kotlin-write-access/Service.kt
@@ -0,0 +1,6 @@
+fun updateUser(user: User) {
+    user.name = "Alice"
+    user.address = Address()
+    // Compound assignment — tree-sitter-kotlin uses `assignment` node for both
+    user.score += 10
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Models/Repo.php b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Models/Repo.php
new file mode 100644
index 000000000..ba3ee4317
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Models/Repo.php
@@ -0,0 +1,8 @@
+<?php
+namespace App\Models;
+
+class Repo {
+    public function save(): bool {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Models/User.php b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Models/User.php
new file mode 100644
index 000000000..467512288
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Models/User.php
@@ -0,0 +1,8 @@
+<?php
+namespace App\Models;
+
+class User {
+    public function save(): bool {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Services/AppService.php b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Services/AppService.php
new file mode 100644
index 000000000..1bd2d285a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/app/Services/AppService.php
@@ -0,0 +1,15 @@
+<?php
+namespace App\Services;
+
+use App\Models\User;
+use App\Models\Repo;
+
+class AppService {
+    public function process(User $user, Repo $repo): void {
+        $alias = $user;
+        $alias->save();
+
+        $rAlias = $repo;
+        $rAlias->save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/composer.json b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/composer.json
new file mode 100644
index 000000000..f36c8cd0c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-assignment-chain/composer.json
@@ -0,0 +1,7 @@
+{
+    "autoload": {
+        "psr-4": {
+            "App\\": "app/"
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-call-result-binding/App.php b/gitnexus/test/fixtures/lang-resolution/php-call-result-binding/App.php
new file mode 100644
index 000000000..16f199b4d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-call-result-binding/App.php
@@ -0,0 +1,22 @@
+<?php
+
+class User {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): bool {
+        return true;
+    }
+}
+
+function getUser(string $name): User {
+    return new User($name);
+}
+
+function processUser(): void {
+    $user = getUser("alice");
+    $user->save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-constructor-promotion-fields/Models.php b/gitnexus/test/fixtures/lang-resolution/php-constructor-promotion-fields/Models.php
new file mode 100644
index 000000000..03eebc7b2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-constructor-promotion-fields/Models.php
@@ -0,0 +1,20 @@
+<?php
+
+class Address {
+    public string $city;
+
+    public function save(): void {
+        // persist address
+    }
+}
+
+class User {
+    public function __construct(
+        public string $name,
+        public Address $address,
+    ) {}
+
+    public function greet(): string {
+        return $this->name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-constructor-promotion-fields/Service.php b/gitnexus/test/fixtures/lang-resolution/php-constructor-promotion-fields/Service.php
new file mode 100644
index 000000000..5744b4da7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-constructor-promotion-fields/Service.php
@@ -0,0 +1,8 @@
+<?php
+
+class Service {
+    public function processUser(User $user): void {
+        // Field-access chain: $user->address → Address, then ->save() → Address#save
+        $user->address->save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-deep-field-chain/Models.php b/gitnexus/test/fixtures/lang-resolution/php-deep-field-chain/Models.php
new file mode 100644
index 000000000..1a91ced7a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-deep-field-chain/Models.php
@@ -0,0 +1,34 @@
+<?php
+
+class City {
+    /** @var string */
+    public string $zipCode;
+
+    public function getName(): string {
+        return "city";
+    }
+}
+
+class Address {
+    /** @var City */
+    public City $city;
+
+    /** @var string */
+    public string $street;
+
+    public function save(): void {
+        // persist address
+    }
+}
+
+class User {
+    /** @var string */
+    public string $name;
+
+    /** @var Address */
+    public Address $address;
+
+    public function greet(): string {
+        return $this->name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-deep-field-chain/Service.php b/gitnexus/test/fixtures/lang-resolution/php-deep-field-chain/Service.php
new file mode 100644
index 000000000..05cd4b017
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-deep-field-chain/Service.php
@@ -0,0 +1,11 @@
+<?php
+
+class Service {
+    public function processUser(User $user): void {
+        // 2-level chain: $user->address → Address, then ->save() → Address#save
+        $user->address->save();
+
+        // 3-level chain: $user->address → Address, ->city → City, ->getName() → City#getName
+        $user->address->city->getName();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-default-params/app.php b/gitnexus/test/fixtures/lang-resolution/php-default-params/app.php
new file mode 100644
index 000000000..58515e9b7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-default-params/app.php
@@ -0,0 +1,10 @@
+<?php
+
+function greet(string $name, string $greeting = "Hello"): string {
+    return "$greeting, $name";
+}
+
+function process(): void {
+    greet("Alice");
+    greet("Bob", "Hi");
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-field-types/Models.php b/gitnexus/test/fixtures/lang-resolution/php-field-types/Models.php
new file mode 100644
index 000000000..cec490ea1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-field-types/Models.php
@@ -0,0 +1,22 @@
+<?php
+
+class Address {
+    /** @var string */
+    public string $city;
+
+    public function save(): void {
+        // persist address
+    }
+}
+
+class User {
+    /** @var string */
+    public string $name;
+
+    /** @var Address */
+    public Address $address;
+
+    public function greet(): string {
+        return $this->name;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-field-types/Service.php b/gitnexus/test/fixtures/lang-resolution/php-field-types/Service.php
new file mode 100644
index 000000000..5744b4da7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-field-types/Service.php
@@ -0,0 +1,8 @@
+<?php
+
+class Service {
+    public function processUser(User $user): void {
+        // Field-access chain: $user->address → Address, then ->save() → Address#save
+        $user->address->save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/Repo.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/Repo.php
new file mode 100644
index 000000000..99a1b32b6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/Repo.php
@@ -0,0 +1,18 @@
+<?php
+
+class Repo {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
+
+/**
+ * @return Repo[]
+ */
+function getRepos(): array {
+    return [new Repo("main")];
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/User.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/User.php
new file mode 100644
index 000000000..8674e30c2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/User.php
@@ -0,0 +1,18 @@
+<?php
+
+class User {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
+
+/**
+ * @return User[]
+ */
+function getUsers(): array {
+    return [new User("alice")];
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/main.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/main.php
new file mode 100644
index 000000000..c8d138bfc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-call-expr/main.php
@@ -0,0 +1,16 @@
+<?php
+
+require_once 'User.php';
+require_once 'Repo.php';
+
+function processUsers(): void {
+    foreach (getUsers() as $user) {
+        $user->save();
+    }
+}
+
+function processRepos(): void {
+    foreach (getRepos() as $repo) {
+        $repo->save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/App.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/App.php
new file mode 100644
index 000000000..4f4d14342
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/App.php
@@ -0,0 +1,26 @@
+<?php
+
+require_once 'User.php';
+require_once 'Repo.php';
+
+class App {
+    /**
+     * PHPDoc generic Collection<User> — element type should resolve to User, not Collection.
+     * @param Collection<User> $users
+     */
+    public function processCollection($users): void {
+        foreach ($users as $user) {
+            $user->save();
+        }
+    }
+
+    /**
+     * PHPDoc array-style User[] — existing behavior, should still work.
+     * @param User[] $repos
+     */
+    public function processArray(array $repos): void {
+        foreach ($repos as $repo) {
+            $repo->save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/Repo.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/Repo.php
new file mode 100644
index 000000000..2a64b11be
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/Repo.php
@@ -0,0 +1,11 @@
+<?php
+
+class Repo {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/User.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/User.php
new file mode 100644
index 000000000..437c13028
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-generic/User.php
@@ -0,0 +1,11 @@
+<?php
+
+class User {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/App.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/App.php
new file mode 100644
index 000000000..cea2c74e1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/App.php
@@ -0,0 +1,12 @@
+<?php
+
+require_once 'User.php';
+
+class App {
+    /** @param User[] $users */
+    public function processUsers(array $users): void {
+        foreach ($users as $user) {
+            $user->save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/Repo.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/Repo.php
new file mode 100644
index 000000000..2a64b11be
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/Repo.php
@@ -0,0 +1,11 @@
+<?php
+
+class Repo {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/User.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/User.php
new file mode 100644
index 000000000..437c13028
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-loop/User.php
@@ -0,0 +1,11 @@
+<?php
+
+class User {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/App.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/App.php
new file mode 100644
index 000000000..1750a191c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/App.php
@@ -0,0 +1,24 @@
+<?php
+
+require_once 'User.php';
+require_once 'Repo.php';
+
+class App {
+    /** @var User[] */
+    private array $users;
+
+    public function __construct() {
+        $this->users = [];
+    }
+
+    /**
+     * $this->users member access in foreach — resolved via Phase 7.4 Strategy C:
+     * scans the class body for the property_declaration and extracts the element
+     * type from the @var PHPDoc annotation without requiring a @param workaround.
+     */
+    public function processMembers(): void {
+        foreach ($this->users as $user) {
+            $user->save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/Repo.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/Repo.php
new file mode 100644
index 000000000..2a64b11be
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/Repo.php
@@ -0,0 +1,11 @@
+<?php
+
+class Repo {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/User.php b/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/User.php
new file mode 100644
index 000000000..437c13028
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-foreach-member-access/User.php
@@ -0,0 +1,11 @@
+<?php
+
+class User {
+    public string $name;
+
+    public function __construct(string $name) {
+        $this->name = $name;
+    }
+
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/A.php b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/A.php
new file mode 100644
index 000000000..5e270007d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/A.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Models;
+
+class A
+{
+    public function greet(): Greeting { return new Greeting(); }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/B.php b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/B.php
new file mode 100644
index 000000000..50f757047
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/B.php
@@ -0,0 +1,5 @@
+<?php
+
+namespace App\Models;
+
+class B extends A {}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/C.php b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/C.php
new file mode 100644
index 000000000..56c44680b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/C.php
@@ -0,0 +1,5 @@
+<?php
+
+namespace App\Models;
+
+class C extends B {}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/Greeting.php b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/Greeting.php
new file mode 100644
index 000000000..aa4f8aa0b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Models/Greeting.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Models;
+
+class Greeting
+{
+    public function save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Services/App.php b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Services/App.php
new file mode 100644
index 000000000..2d49f3f86
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/app/Services/App.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\C;
+
+class App
+{
+    public function process(): void
+    {
+        $c = new C();
+        $c->greet()->save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/composer.json b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/composer.json
new file mode 100644
index 000000000..386b0bd2d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-grandparent-resolution/composer.json
@@ -0,0 +1,7 @@
+{
+  "autoload": {
+    "psr-4": {
+      "App\\": "app/"
+    }
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-method-chain-binding/App.php b/gitnexus/test/fixtures/lang-resolution/php-method-chain-binding/App.php
new file mode 100644
index 000000000..6b381bf39
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-method-chain-binding/App.php
@@ -0,0 +1,28 @@
+<?php
+
+class City {
+    public string $name;
+    public function __construct(string $name) { $this->name = $name; }
+    public function save(): bool { return true; }
+}
+
+class Address {
+    public City $city;
+    public function __construct(City $city) { $this->city = $city; }
+    public function getCity(): City { return $this->city; }
+}
+
+class User {
+    public Address $address;
+    public function __construct(Address $address) { $this->address = $address; }
+}
+
+function getUser(): User {
+    return new User(new Address(new City("NYC")));
+}
+
+function processChain(): void {
+    $user = getUser();
+    $city = $user->getCity();
+    $city->save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Models/Repo.php b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Models/Repo.php
new file mode 100644
index 000000000..d3670e2f5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Models/Repo.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Models;
+
+class Repo
+{
+    public function save(): bool
+    {
+        return false;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Models/User.php b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Models/User.php
new file mode 100644
index 000000000..b43d56083
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Models/User.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Models;
+
+class User
+{
+    public function save(): bool
+    {
+        return true;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Services/AppService.php b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Services/AppService.php
new file mode 100644
index 000000000..fb7f2c120
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/app/Services/AppService.php
@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\User;
+use App\Models\Repo;
+
+class AppService
+{
+    public function process(?User $user, ?Repo $repo): void
+    {
+        // Nullable type-hinted params — should disambiguate via unwrapped type
+        $user->save();
+        $repo->save();
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/composer.json b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/composer.json
new file mode 100644
index 000000000..386b0bd2d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-nullable-receiver/composer.json
@@ -0,0 +1,7 @@
+{
+  "autoload": {
+    "psr-4": {
+      "App\\": "app/"
+    }
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Config/constants.php b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Config/constants.php
new file mode 100644
index 000000000..fe5fb8d14
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Config/constants.php
@@ -0,0 +1,5 @@
+<?php
+
+namespace App\Config;
+
+const MAX_RETRIES = 3;
diff --git a/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Models/User.php b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Models/User.php
new file mode 100644
index 000000000..635b2a0fa
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Models/User.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Models;
+
+class User {
+    public function save(): void {}
+    public function getName(): string {
+        return "alice";
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Services/Calculator.php b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Services/Calculator.php
new file mode 100644
index 000000000..edfe607a6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Services/Calculator.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\User;
+use function App\Utils\formatName;
+use const App\Config\MAX_RETRIES;
+
+class Calculator {
+    public function process(): void {
+        $user = new User();
+        $user->save();
+
+        $name = formatName("test");
+        echo MAX_RETRIES;
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Utils/helpers.php b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Utils/helpers.php
new file mode 100644
index 000000000..dc2532223
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/app/Utils/helpers.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace App\Utils;
+
+function formatName(string $name): string {
+    return strtoupper($name);
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-use-function-const/composer.json b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/composer.json
new file mode 100644
index 000000000..386b0bd2d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-use-function-const/composer.json
@@ -0,0 +1,7 @@
+{
+  "autoload": {
+    "psr-4": {
+      "App\\": "app/"
+    }
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-write-access/models.php b/gitnexus/test/fixtures/lang-resolution/php-write-access/models.php
new file mode 100644
index 000000000..d34c17bc3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-write-access/models.php
@@ -0,0 +1,11 @@
+<?php
+
+class Address {
+    public string $city;
+}
+
+class User {
+    public string $name;
+    public Address $address;
+    public static int $count = 0;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/php-write-access/service.php b/gitnexus/test/fixtures/lang-resolution/php-write-access/service.php
new file mode 100644
index 000000000..c350e66e3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/php-write-access/service.php
@@ -0,0 +1,17 @@
+<?php
+
+require_once 'models.php';
+
+function updateUser(User $user) {
+    // Simple write
+    $user->name = "Alice";
+
+    // Object write
+    $user->address = new Address();
+
+    // Static property write
+    User::$count = 42;
+
+    // Compound assignment write
+    $user->name .= " Smith";
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/app.py b/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/app.py
new file mode 100644
index 000000000..7277e3904
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/app.py
@@ -0,0 +1,17 @@
+from user import User
+from repo import Repo
+
+def get_user() -> User:
+    return User()
+
+def get_repo() -> Repo:
+    return Repo()
+
+def process():
+    u: User = get_user()
+    alias = u
+    alias.save()
+
+    r: Repo = get_repo()
+    r_alias = r
+    r_alias.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/repo.py b/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/repo.py
new file mode 100644
index 000000000..18ce75c49
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self):
+        return False
diff --git a/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/user.py b/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/user.py
new file mode 100644
index 000000000..a9220e744
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-assignment-chain/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self):
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-bare-import/models/user.py b/gitnexus/test/fixtures/lang-resolution/python-bare-import/models/user.py
new file mode 100644
index 000000000..96f70f4d8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-bare-import/models/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-bare-import/services/auth.py b/gitnexus/test/fixtures/lang-resolution/python-bare-import/services/auth.py
new file mode 100644
index 000000000..c7e9edb1b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-bare-import/services/auth.py
@@ -0,0 +1,5 @@
+import user
+
+def authenticate():
+    svc = user.UserService()
+    svc.execute()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-bare-import/services/user.py b/gitnexus/test/fixtures/lang-resolution/python-bare-import/services/user.py
new file mode 100644
index 000000000..6b0bea09b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-bare-import/services/user.py
@@ -0,0 +1,3 @@
+class UserService:
+    def execute(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/app.py b/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/app.py
new file mode 100644
index 000000000..ed57b080c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/app.py
@@ -0,0 +1,5 @@
+from service import get_user
+
+def process_user():
+    user = get_user("alice")
+    user.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/models.py b/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/models.py
new file mode 100644
index 000000000..c0ddac39f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/models.py
@@ -0,0 +1,6 @@
+class User:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self) -> bool:
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/service.py b/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/service.py
new file mode 100644
index 000000000..7bf2641bd
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-call-result-binding/service.py
@@ -0,0 +1,4 @@
+from models import User
+
+def get_user(name: str) -> User:
+    return User(name)
diff --git a/gitnexus/test/fixtures/lang-resolution/python-chain-call/app.py b/gitnexus/test/fixtures/lang-resolution/python-chain-call/app.py
new file mode 100644
index 000000000..f924be17c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-chain-call/app.py
@@ -0,0 +1,6 @@
+from service import UserService
+
+
+def process_user():
+    svc = UserService()
+    svc.get_user().save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-chain-call/models/repo.py b/gitnexus/test/fixtures/lang-resolution/python-chain-call/models/repo.py
new file mode 100644
index 000000000..3b88a9847
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-chain-call/models/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-chain-call/models/user.py b/gitnexus/test/fixtures/lang-resolution/python-chain-call/models/user.py
new file mode 100644
index 000000000..96f70f4d8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-chain-call/models/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-chain-call/service.py b/gitnexus/test/fixtures/lang-resolution/python-chain-call/service.py
new file mode 100644
index 000000000..7118aba7f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-chain-call/service.py
@@ -0,0 +1,6 @@
+from models.user import User
+
+
+class UserService:
+    def get_user(self) -> User:
+        return User()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-class-annotations/repo.py b/gitnexus/test/fixtures/lang-resolution/python-class-annotations/repo.py
index 18ce75c49..792eaf081 100644
--- a/gitnexus/test/fixtures/lang-resolution/python-class-annotations/repo.py
+++ b/gitnexus/test/fixtures/lang-resolution/python-class-annotations/repo.py
@@ -1,3 +1,5 @@
 class Repo:
+    name: str = ""
+
     def save(self):
         return False
diff --git a/gitnexus/test/fixtures/lang-resolution/python-class-annotations/user.py b/gitnexus/test/fixtures/lang-resolution/python-class-annotations/user.py
index a9220e744..71899ec86 100644
--- a/gitnexus/test/fixtures/lang-resolution/python-class-annotations/user.py
+++ b/gitnexus/test/fixtures/lang-resolution/python-class-annotations/user.py
@@ -1,3 +1,5 @@
 class User:
+    name: str = ""
+
     def save(self):
         return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-default-params/app.py b/gitnexus/test/fixtures/lang-resolution/python-default-params/app.py
new file mode 100644
index 000000000..9d5f25837
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-default-params/app.py
@@ -0,0 +1,11 @@
+def greet(name: str, greeting: str = "Hello") -> str:
+    return greeting + ", " + name
+
+def search(query: str, limit: int = 10) -> list:
+    return []
+
+def process():
+    greet("alice")
+    greet("bob", "Hi")
+    search("test")
+    search("test", 5)
diff --git a/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/app.py b/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/app.py
new file mode 100644
index 000000000..2d78849a7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/app.py
@@ -0,0 +1,5 @@
+from user import User
+
+def process(data: dict[str, User]):
+    for key, user in data.items():
+        user.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/repo.py b/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/repo.py
new file mode 100644
index 000000000..2ab5d4e66
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/repo.py
@@ -0,0 +1,6 @@
+class Repo:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/user.py b/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/user.py
new file mode 100644
index 000000000..ce4796bd0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-dict-items-loop/user.py
@@ -0,0 +1,6 @@
+class User:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/app.py b/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/app.py
new file mode 100644
index 000000000..be3a8ff56
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/app.py
@@ -0,0 +1,20 @@
+from user import User
+from typing import List
+
+
+def process_users(users: dict[str, User]):
+    # 3-variable enumerate: i=index, k=key, v=value (User)
+    for i, k, v in enumerate(users.items()):
+        v.save()
+
+
+def process_nested_tuple(users: dict[str, User]):
+    # Nested tuple pattern: i=index, (k,v) tuple unpacked
+    for i, (k, v) in enumerate(users.items()):
+        v.save()
+
+
+def process_parenthesized_tuple(users: List[User]):
+    # Parenthesized tuple as top-level pattern
+    for (i, u) in enumerate(users):
+        u.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/repo.py b/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/repo.py
new file mode 100644
index 000000000..ec93e0e2f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self) -> bool:
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/user.py b/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/user.py
new file mode 100644
index 000000000..c0ddac39f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-enumerate-loop/user.py
@@ -0,0 +1,6 @@
+class User:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self) -> bool:
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/address.py b/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/address.py
new file mode 100644
index 000000000..83754b8df
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/address.py
@@ -0,0 +1,5 @@
+class Address:
+    city: str
+
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/service.py b/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/service.py
new file mode 100644
index 000000000..443bce2bb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/service.py
@@ -0,0 +1,6 @@
+from user import User
+
+def process_user(user: User):
+    # Field-access chain: user.address → Address, then .save() must resolve
+    # to Address#save (NOT User#save) — only lookupFieldByOwner can disambiguate.
+    user.address.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/user.py b/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/user.py
new file mode 100644
index 000000000..3681631d5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-field-type-disambig/user.py
@@ -0,0 +1,8 @@
+from address import Address
+
+class User:
+    name: str
+    address: Address
+
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-field-types/models.py b/gitnexus/test/fixtures/lang-resolution/python-field-types/models.py
new file mode 100644
index 000000000..fccf42ae2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-field-types/models.py
@@ -0,0 +1,12 @@
+class Address:
+    city: str
+
+    def save(self):
+        pass
+
+class User:
+    name: str
+    address: Address
+
+    def greet(self) -> str:
+        return self.name
diff --git a/gitnexus/test/fixtures/lang-resolution/python-field-types/service.py b/gitnexus/test/fixtures/lang-resolution/python-field-types/service.py
new file mode 100644
index 000000000..f7c2a8d74
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-field-types/service.py
@@ -0,0 +1,4 @@
+from models import User
+
+def process_user(user: User):
+    user.address.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-for-call-expr/main.py b/gitnexus/test/fixtures/lang-resolution/python-for-call-expr/main.py
new file mode 100644
index 000000000..58bfe40b1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-for-call-expr/main.py
@@ -0,0 +1,9 @@
+from models import get_users, get_repos
+
+def process_users():
+    for user in get_users():
+        user.save()
+
+def process_repos():
+    for repo in get_repos():
+        repo.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-for-call-expr/models.py b/gitnexus/test/fixtures/lang-resolution/python-for-call-expr/models.py
new file mode 100644
index 000000000..822eece85
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-for-call-expr/models.py
@@ -0,0 +1,19 @@
+class User:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self) -> None:
+        pass
+
+class Repo:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self) -> None:
+        pass
+
+def get_users() -> list[User]:
+    return [User("alice")]
+
+def get_repos() -> list[Repo]:
+    return [Repo("main")]
diff --git a/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/app.py b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/app.py
new file mode 100644
index 000000000..7a2fd07d8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/app.py
@@ -0,0 +1,5 @@
+from models.c import C
+
+def process():
+    c = C()
+    c.greet().save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/__init__.py b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/a.py b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/a.py
new file mode 100644
index 000000000..49d6098b9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/a.py
@@ -0,0 +1,5 @@
+from .greeting import Greeting
+
+class A:
+    def greet(self) -> Greeting:
+        return Greeting()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/b.py b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/b.py
new file mode 100644
index 000000000..26c582d28
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/b.py
@@ -0,0 +1,4 @@
+from .a import A
+
+class B(A):
+    pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/c.py b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/c.py
new file mode 100644
index 000000000..296322aec
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/c.py
@@ -0,0 +1,4 @@
+from .b import B
+
+class C(B):
+    pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/greeting.py b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/greeting.py
new file mode 100644
index 000000000..1774cb730
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-grandparent-resolution/models/greeting.py
@@ -0,0 +1,3 @@
+class Greeting:
+    def save(self) -> None:
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-match-case/app.py b/gitnexus/test/fixtures/lang-resolution/python-match-case/app.py
new file mode 100644
index 000000000..b56eae4ee
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-match-case/app.py
@@ -0,0 +1,8 @@
+from models.user import User
+from models.repo import Repo
+
+
+def process(x):
+    match x:
+        case User() as u:
+            u.save()  # should resolve to User#save, not Repo#save
diff --git a/gitnexus/test/fixtures/lang-resolution/python-match-case/models/repo.py b/gitnexus/test/fixtures/lang-resolution/python-match-case/models/repo.py
new file mode 100644
index 000000000..3b88a9847
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-match-case/models/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-match-case/models/user.py b/gitnexus/test/fixtures/lang-resolution/python-match-case/models/user.py
new file mode 100644
index 000000000..96f70f4d8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-match-case/models/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/app.py b/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/app.py
new file mode 100644
index 000000000..d91be40f5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/app.py
@@ -0,0 +1,13 @@
+from models.user import User
+from models.repo import Repo
+from typing import List
+
+class UserService:
+    def process_users(self, users: List[User]):
+        for user in self.users:
+            user.save()
+
+class RepoService:
+    def process_repos(self, repos: List[Repo]):
+        for repo in self.repos:
+            repo.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/models/repo.py b/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/models/repo.py
new file mode 100644
index 000000000..3b88a9847
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/models/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/models/user.py b/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/models/user.py
new file mode 100644
index 000000000..96f70f4d8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-member-access-for-loop/models/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self):
+        pass
diff --git a/gitnexus/test/fixtures/lang-resolution/python-method-chain-binding/app.py b/gitnexus/test/fixtures/lang-resolution/python-method-chain-binding/app.py
new file mode 100644
index 000000000..1469dbe3a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-method-chain-binding/app.py
@@ -0,0 +1,9 @@
+from models import User, Address, City
+
+def get_user() -> User:
+    return User(Address(City("NYC")))
+
+def process_chain():
+    user = get_user()
+    city = user.get_city()
+    city.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-method-chain-binding/models.py b/gitnexus/test/fixtures/lang-resolution/python-method-chain-binding/models.py
new file mode 100644
index 000000000..ca0e26c13
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-method-chain-binding/models.py
@@ -0,0 +1,21 @@
+class City:
+    def __init__(self, name: str):
+        self.name = name
+
+    def save(self) -> bool:
+        return True
+
+class Address:
+    city: City
+
+    def __init__(self, city: City):
+        self.city = city
+
+    def get_city(self) -> City:
+        return self.city
+
+class User:
+    address: Address
+
+    def __init__(self, address: Address):
+        self.address = address
diff --git a/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/app.py b/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/app.py
new file mode 100644
index 000000000..f04a0788b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/app.py
@@ -0,0 +1,24 @@
+from user import User
+from repo import Repo
+
+
+def get_user() -> User:
+    return User()
+
+
+def get_repo() -> Repo:
+    return Repo()
+
+
+# Python 3.10+ union: User | None is parsed as binary_operator,
+# stored as raw text "User | None" in TypeEnv, then stripNullable resolves it.
+def nullable_chain_user() -> None:
+    u: User | None = get_user()
+    alias = u
+    alias.save()
+
+
+def nullable_chain_repo() -> None:
+    r: Repo | None = get_repo()
+    alias = r
+    alias.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/repo.py b/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/repo.py
new file mode 100644
index 000000000..0d725eb53
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self) -> bool:
+        return False
diff --git a/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/user.py b/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/user.py
new file mode 100644
index 000000000..8ef6bb419
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-nullable-chain/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self) -> bool:
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/app.py b/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/app.py
new file mode 100644
index 000000000..4521d5913
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/app.py
@@ -0,0 +1,14 @@
+from user import User
+from repo import Repo
+
+def find_user() -> User | None:
+    return User()
+
+def find_repo() -> Repo | None:
+    return Repo()
+
+def process_entities():
+    user: User | None = find_user()
+    user.save()
+    repo: Repo | None = find_repo()
+    repo.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/repo.py b/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/repo.py
new file mode 100644
index 000000000..18ce75c49
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self):
+        return False
diff --git a/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/user.py b/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/user.py
new file mode 100644
index 000000000..a9220e744
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-nullable-receiver/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self):
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/app.py b/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/app.py
new file mode 100644
index 000000000..645a7f9f9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/app.py
@@ -0,0 +1,30 @@
+from user import User
+from repo import Repo
+
+
+def get_user() -> User:
+    return User()
+
+
+def get_repo() -> Repo:
+    return Repo()
+
+
+# Walrus operator (:=) creates a named_expression binding.
+# Tests that extractPendingAssignment propagates through walrus assignments.
+def walrus_chain_user() -> None:
+    u: User = get_user()
+    # Regular assignment where alias gets type from u (regular chain)
+    alias = u
+    # Walrus inside condition: w gets type from u via named_expression chain
+    if (w := u):
+        w.save()
+    alias.save()
+
+
+def walrus_chain_repo() -> None:
+    r: Repo = get_repo()
+    alias = r
+    if (w := r):
+        w.save()
+    alias.save()
diff --git a/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/repo.py b/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/repo.py
new file mode 100644
index 000000000..0d725eb53
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/repo.py
@@ -0,0 +1,3 @@
+class Repo:
+    def save(self) -> bool:
+        return False
diff --git a/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/user.py b/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/user.py
new file mode 100644
index 000000000..8ef6bb419
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-walrus-chain/user.py
@@ -0,0 +1,3 @@
+class User:
+    def save(self) -> bool:
+        return True
diff --git a/gitnexus/test/fixtures/lang-resolution/python-write-access/models.py b/gitnexus/test/fixtures/lang-resolution/python-write-access/models.py
new file mode 100644
index 000000000..bfe176dfb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-write-access/models.py
@@ -0,0 +1,6 @@
+class Address:
+    city: str
+
+class User:
+    name: str
+    address: Address
diff --git a/gitnexus/test/fixtures/lang-resolution/python-write-access/service.py b/gitnexus/test/fixtures/lang-resolution/python-write-access/service.py
new file mode 100644
index 000000000..9a76d77cf
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/python-write-access/service.py
@@ -0,0 +1,6 @@
+from models import User, Address
+
+def update_user(user: User):
+    # Write access
+    user.name = "Alice"
+    user.address = Address()
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-call-result-binding/app.rb b/gitnexus/test/fixtures/lang-resolution/ruby-call-result-binding/app.rb
new file mode 100644
index 000000000..c44f2d66b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-call-result-binding/app.rb
@@ -0,0 +1,15 @@
+class User
+  def save
+    true
+  end
+end
+
+# @return [User]
+def get_user(name)
+  User.new
+end
+
+def process_user
+  user = get_user("alice")
+  user.save
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/app.rb b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/app.rb
new file mode 100644
index 000000000..6b15a14bc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/app.rb
@@ -0,0 +1,8 @@
+require_relative './user_service'
+
+class App
+  def process
+    svc = UserService.new
+    svc.get_user.save
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/repo.rb b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/repo.rb
new file mode 100644
index 000000000..3e78d628c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/repo.rb
@@ -0,0 +1,5 @@
+class Repo
+  def save
+    true
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/user.rb b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/user.rb
new file mode 100644
index 000000000..98ecf7994
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/user.rb
@@ -0,0 +1,5 @@
+class User
+  def save
+    true
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/user_service.rb b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/user_service.rb
new file mode 100644
index 000000000..1b1b87524
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-chain-call/lib/user_service.rb
@@ -0,0 +1,8 @@
+require_relative './user'
+
+class UserService
+  # @return [User]
+  def get_user
+    User.new
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-default-params/app.rb b/gitnexus/test/fixtures/lang-resolution/ruby-default-params/app.rb
new file mode 100644
index 000000000..ca97a5cf1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-default-params/app.rb
@@ -0,0 +1,8 @@
+def greet(name, greeting = "Hello")
+  "#{greeting}, #{name}"
+end
+
+def process
+  greet("Alice")
+  greet("Bob", "Hi")
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/address.rb b/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/address.rb
new file mode 100644
index 000000000..6d96cbb10
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/address.rb
@@ -0,0 +1,8 @@
+class Address
+  # @return [String]
+  attr_accessor :city
+
+  def save
+    true
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/service.rb b/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/service.rb
new file mode 100644
index 000000000..30c7ffd2b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/service.rb
@@ -0,0 +1,8 @@
+require_relative 'user'
+
+# @param user [User]
+def process_user(user)
+  # Field-access chain: user.address → Address, then .save → Address#save
+  # Both User and Address have save — only lookupFieldByOwner can disambiguate.
+  user.address.save
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/user.rb b/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/user.rb
new file mode 100644
index 000000000..242e358d0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-field-type-disambig/user.rb
@@ -0,0 +1,13 @@
+require_relative 'address'
+
+class User
+  # @return [String]
+  attr_accessor :name
+
+  # @return [Address]
+  attr_accessor :address
+
+  def save
+    true
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-field-types/models.rb b/gitnexus/test/fixtures/lang-resolution/ruby-field-types/models.rb
new file mode 100644
index 000000000..a4bd432a7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-field-types/models.rb
@@ -0,0 +1,20 @@
+class Address
+  # @return [String]
+  attr_accessor :city
+
+  def save
+    true
+  end
+end
+
+class User
+  # @return [String]
+  attr_accessor :name
+
+  # @return [Address]
+  attr_accessor :address
+
+  def greet
+    name
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-field-types/service.rb b/gitnexus/test/fixtures/lang-resolution/ruby-field-types/service.rb
new file mode 100644
index 000000000..a7da3e692
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-field-types/service.rb
@@ -0,0 +1,7 @@
+require_relative 'models'
+
+# @param user [User]
+def process_user(user)
+  # Field-access chain: user.address → Address, then .save → Address#save
+  user.address.save
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/app.rb b/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/app.rb
new file mode 100644
index 000000000..9e326dd3d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/app.rb
@@ -0,0 +1,8 @@
+require_relative 'user'
+
+# @param users [Array<User>]
+def process_users(users)
+  for user in users
+    user.save
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/repo.rb b/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/repo.rb
new file mode 100644
index 000000000..9cf9c87f7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/repo.rb
@@ -0,0 +1,8 @@
+class Repo
+  def initialize(name)
+    @name = name
+  end
+
+  def save
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/user.rb b/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/user.rb
new file mode 100644
index 000000000..6c93f5b8b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-for-in-loop/user.rb
@@ -0,0 +1,8 @@
+class User
+  def initialize(name)
+    @name = name
+  end
+
+  def save
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/app.rb b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/app.rb
new file mode 100644
index 000000000..50b2e9303
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/app.rb
@@ -0,0 +1,6 @@
+require_relative 'models/c'
+
+def process
+  c = C.new
+  c.greet.save
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/a.rb b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/a.rb
new file mode 100644
index 000000000..e604abff9
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/a.rb
@@ -0,0 +1,7 @@
+require_relative 'greeting'
+
+class A
+  def greet
+    Greeting.new
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/b.rb b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/b.rb
new file mode 100644
index 000000000..197088d2c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/b.rb
@@ -0,0 +1,4 @@
+require_relative 'a'
+
+class B < A
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/c.rb b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/c.rb
new file mode 100644
index 000000000..e463dcd63
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/c.rb
@@ -0,0 +1,4 @@
+require_relative 'b'
+
+class C < B
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/greeting.rb b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/greeting.rb
new file mode 100644
index 000000000..d4886c078
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-grandparent-resolution/lib/models/greeting.rb
@@ -0,0 +1,5 @@
+class Greeting
+  def save
+    true
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-method-chain-binding/app.rb b/gitnexus/test/fixtures/lang-resolution/ruby-method-chain-binding/app.rb
new file mode 100644
index 000000000..c4063f1f6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-method-chain-binding/app.rb
@@ -0,0 +1,31 @@
+class City
+  def save
+    true
+  end
+end
+
+class Address
+  # @return [City]
+  def get_city
+    City.new
+  end
+end
+
+class User
+  # @return [Address]
+  def get_address
+    Address.new
+  end
+end
+
+# @return [User]
+def get_user
+  User.new
+end
+
+def process_chain
+  user = get_user()
+  addr = user.get_address()
+  city = addr.get_city()
+  city.save
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-write-access/models.rb b/gitnexus/test/fixtures/lang-resolution/ruby-write-access/models.rb
new file mode 100644
index 000000000..e6f1be6d2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-write-access/models.rb
@@ -0,0 +1,7 @@
+class Address
+  attr_accessor :city
+end
+
+class User
+  attr_accessor :name, :address, :score
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/ruby-write-access/service.rb b/gitnexus/test/fixtures/lang-resolution/ruby-write-access/service.rb
new file mode 100644
index 000000000..69342560d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ruby-write-access/service.rb
@@ -0,0 +1,16 @@
+require_relative 'models'
+
+class UserService
+  def update_user
+    user = User.new
+
+    # Simple write (setter method call)
+    user.name = "Alice"
+
+    # Object write
+    user.address = Address.new
+
+    # Compound assignment (operator_assignment node)
+    user.score += 10
+  end
+end
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/main.rs
new file mode 100644
index 000000000..dd98690ed
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/main.rs
@@ -0,0 +1,19 @@
+mod user;
+mod repo;
+use crate::user::User;
+use crate::repo::Repo;
+
+fn get_user() -> User { User }
+fn get_repo() -> Repo { Repo }
+
+fn process_entities() {
+    let u: User = get_user();
+    let alias = u;
+    alias.save();
+
+    let r: Repo = get_repo();
+    let r_alias = r;
+    r_alias.save();
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/repo.rs
new file mode 100644
index 000000000..18a786288
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo;
+
+impl Repo {
+    pub fn save(&self) -> bool {
+        false
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/user.rs
new file mode 100644
index 000000000..59bcfd2b2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-assignment-chain/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User;
+
+impl User {
+    pub fn save(&self) -> bool {
+        true
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-call-result-binding/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-call-result-binding/src/main.rs
new file mode 100644
index 000000000..c5c8006c8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-call-result-binding/src/main.rs
@@ -0,0 +1,7 @@
+mod models;
+use models::get_user;
+
+fn process_user() {
+    let user = get_user("alice");
+    user.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-call-result-binding/src/models.rs b/gitnexus/test/fixtures/lang-resolution/rust-call-result-binding/src/models.rs
new file mode 100644
index 000000000..eaa691743
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-call-result-binding/src/models.rs
@@ -0,0 +1,13 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) -> bool {
+        true
+    }
+}
+
+pub fn get_user(name: &str) -> User {
+    User { name: name.to_string() }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/main.rs
new file mode 100644
index 000000000..de26632de
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/main.rs
@@ -0,0 +1,16 @@
+mod models;
+
+use models::user::User;
+
+struct UserService;
+
+impl UserService {
+    fn get_user(&self) -> User {
+        User { name: String::from("alice") }
+    }
+}
+
+fn process_user() {
+    let svc = UserService;
+    svc.get_user().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/mod.rs b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/mod.rs
new file mode 100644
index 000000000..5122f5996
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/mod.rs
@@ -0,0 +1,2 @@
+pub mod user;
+pub mod repo;
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/repo.rs
new file mode 100644
index 000000000..76156e15d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/repo.rs
@@ -0,0 +1,9 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) -> bool {
+        true
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/user.rs
new file mode 100644
index 000000000..31e047e0e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-chain-call/src/models/user.rs
@@ -0,0 +1,9 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) -> bool {
+        true
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-deep-field-chain/models.rs b/gitnexus/test/fixtures/lang-resolution/rust-deep-field-chain/models.rs
new file mode 100644
index 000000000..03f26eda1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-deep-field-chain/models.rs
@@ -0,0 +1,25 @@
+pub struct City {
+    pub zip_code: String,
+}
+
+impl City {
+    pub fn get_name(&self) -> &str {
+        "city"
+    }
+}
+
+pub struct Address {
+    pub city: City,
+    pub street: String,
+}
+
+impl Address {
+    pub fn save(&self) {
+        // persist address
+    }
+}
+
+pub struct User {
+    pub name: String,
+    pub address: Address,
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-deep-field-chain/service.rs b/gitnexus/test/fixtures/lang-resolution/rust-deep-field-chain/service.rs
new file mode 100644
index 000000000..005e90695
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-deep-field-chain/service.rs
@@ -0,0 +1,6 @@
+use crate::models::{User, Address, City};
+
+fn process_user(user: &User) {
+    user.address.save();
+    user.address.city.get_name();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/error.rs b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/error.rs
new file mode 100644
index 000000000..de712550d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/error.rs
@@ -0,0 +1,7 @@
+pub struct AppError {
+    pub code: i32,
+}
+
+impl AppError {
+    pub fn report(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/main.rs
new file mode 100644
index 000000000..7c63893b5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/main.rs
@@ -0,0 +1,18 @@
+mod user;
+mod error;
+use crate::user::User;
+use crate::error::AppError;
+
+fn handle_err(res: Result<User, AppError>) {
+    if let Err(e) = res {
+        e.report();
+    }
+}
+
+fn handle_ok(res: Result<User, AppError>) {
+    if let Ok(user) = res {
+        user.save();
+    }
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/repo.rs
new file mode 100644
index 000000000..bc1ad22b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/user.rs
new file mode 100644
index 000000000..706b24558
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-err-unwrap/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-field-types/models.rs b/gitnexus/test/fixtures/lang-resolution/rust-field-types/models.rs
new file mode 100644
index 000000000..3d9f571ff
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-field-types/models.rs
@@ -0,0 +1,20 @@
+pub struct Address {
+    pub city: String,
+}
+
+impl Address {
+    pub fn save(&self) {
+        // persist address
+    }
+}
+
+pub struct User {
+    pub name: String,
+    pub address: Address,
+}
+
+impl User {
+    pub fn greet(&self) -> &str {
+        &self.name
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-field-types/service.rs b/gitnexus/test/fixtures/lang-resolution/rust-field-types/service.rs
new file mode 100644
index 000000000..be2ae66f7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-field-types/service.rs
@@ -0,0 +1,5 @@
+use crate::models::{User, Address};
+
+fn process_user(user: &User) {
+    user.address.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/main.rs
new file mode 100644
index 000000000..f87db8f4b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/main.rs
@@ -0,0 +1,18 @@
+mod user;
+mod repo;
+use crate::user::get_users;
+use crate::repo::get_repos;
+
+fn process_users() {
+    for user in get_users() {
+        user.save();
+    }
+}
+
+fn process_repos() {
+    for repo in get_repos() {
+        repo.save();
+    }
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/repo.rs
new file mode 100644
index 000000000..4ef7eb072
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/repo.rs
@@ -0,0 +1,11 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) {}
+}
+
+pub fn get_repos() -> Vec<Repo> {
+    vec![Repo { name: "main".into() }]
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/user.rs
new file mode 100644
index 000000000..5d53d6b34
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-for-call-expr/src/user.rs
@@ -0,0 +1,11 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) {}
+}
+
+pub fn get_users() -> Vec<User> {
+    vec![User { name: "alice".into() }]
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/main.rs
new file mode 100644
index 000000000..b09908fe2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/main.rs
@@ -0,0 +1,18 @@
+mod user;
+mod repo;
+use crate::user::User;
+use crate::repo::Repo;
+
+fn process_users(users: Vec<User>) {
+    for user in &users {
+        user.save();
+    }
+}
+
+fn process_repos(repos: Vec<Repo>) {
+    for repo in &repos {
+        repo.save();
+    }
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/repo.rs
new file mode 100644
index 000000000..bc1ad22b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/user.rs
new file mode 100644
index 000000000..706b24558
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-for-loop/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/mod.rs b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/mod.rs
new file mode 100644
index 000000000..4e7b9dc71
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/mod.rs
@@ -0,0 +1 @@
+// Placeholder — actual module structure is in src/
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/repo.rs
new file mode 100644
index 000000000..7ed292fe7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/repo.rs
@@ -0,0 +1 @@
+// Placeholder — actual Repo definition is in src/repo.rs
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/user.rs
new file mode 100644
index 000000000..d6e967f0d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/models/user.rs
@@ -0,0 +1 @@
+// Placeholder — actual User definition is in src/user.rs
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/main.rs
new file mode 100644
index 000000000..548b7628c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/main.rs
@@ -0,0 +1,11 @@
+mod user;
+mod repo;
+use crate::user::User;
+
+fn process(opt: Option<User>) {
+    if let Some(user) = opt {
+        user.save();
+    }
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/repo.rs
new file mode 100644
index 000000000..bc1ad22b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/user.rs
new file mode 100644
index 000000000..706b24558
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-if-let-unwrap/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/main.rs
new file mode 100644
index 000000000..e40a04da5
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/main.rs
@@ -0,0 +1,18 @@
+mod user;
+mod repo;
+use crate::user::User;
+use crate::repo::Repo;
+
+fn process_users(users: Vec<User>) {
+    for user in users.iter() {
+        user.save();
+    }
+}
+
+fn process_repos(repos: Vec<Repo>) {
+    for repo in repos.into_iter() {
+        repo.save();
+    }
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/repo.rs
new file mode 100644
index 000000000..bc1ad22b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/user.rs
new file mode 100644
index 000000000..706b24558
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-iter-for-loop/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/main.rs
new file mode 100644
index 000000000..7c40df44b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/main.rs
@@ -0,0 +1,19 @@
+mod user;
+mod repo;
+use crate::user::User;
+use crate::repo::Repo;
+
+fn process(opt: Option<User>) {
+    match opt {
+        Some(user) => user.save(),
+        None => {},
+    }
+}
+
+fn check(res: Result<Repo, String>) {
+    if let Ok(repo) = res {
+        repo.save();
+    }
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/repo.rs
new file mode 100644
index 000000000..bc1ad22b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo {
+    pub name: String,
+}
+
+impl Repo {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/user.rs
new file mode 100644
index 000000000..706b24558
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-match-unwrap/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User {
+    pub name: String,
+}
+
+impl User {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-method-chain-binding/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-method-chain-binding/src/main.rs
new file mode 100644
index 000000000..eb0ee3994
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-method-chain-binding/src/main.rs
@@ -0,0 +1,9 @@
+mod models;
+use models::get_user;
+
+fn process_chain() {
+    let user = get_user();
+    let addr = user.address;
+    let city = addr.get_city();
+    city.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-method-chain-binding/src/models.rs b/gitnexus/test/fixtures/lang-resolution/rust-method-chain-binding/src/models.rs
new file mode 100644
index 000000000..5d2817bbb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-method-chain-binding/src/models.rs
@@ -0,0 +1,23 @@
+pub struct City {
+    pub name: String,
+}
+
+impl City {
+    pub fn save(&self) -> bool { true }
+}
+
+pub struct Address {
+    pub city: City,
+}
+
+impl Address {
+    pub fn get_city(&self) -> &City { &self.city }
+}
+
+pub struct User {
+    pub address: Address,
+}
+
+pub fn get_user() -> User {
+    User { address: Address { city: City { name: "NYC".to_string() } } }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/main.rs
new file mode 100644
index 000000000..c94c16a09
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/main.rs
@@ -0,0 +1,21 @@
+mod user;
+mod repo;
+use crate::user::User;
+use crate::repo::Repo;
+
+fn find_user() -> Option<User> {
+    Some(User)
+}
+
+fn find_repo() -> Option<Repo> {
+    Some(Repo)
+}
+
+fn process_entities() {
+    let user: Option<User> = find_user();
+    user.unwrap().save();
+    let repo: Option<Repo> = find_repo();
+    repo.unwrap().save();
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/repo.rs
new file mode 100644
index 000000000..18a786288
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/repo.rs
@@ -0,0 +1,7 @@
+pub struct Repo;
+
+impl Repo {
+    pub fn save(&self) -> bool {
+        false
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/user.rs
new file mode 100644
index 000000000..59bcfd2b2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-nullable-receiver/src/user.rs
@@ -0,0 +1,7 @@
+pub struct User;
+
+impl User {
+    pub fn save(&self) -> bool {
+        true
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/main.rs
new file mode 100644
index 000000000..376d3ddaa
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/main.rs
@@ -0,0 +1,17 @@
+mod user;
+mod repo;
+use crate::user::User;
+use crate::repo::Repo;
+
+// Tests that Option<User> unwraps to User in TypeEnv,
+// and assignment chain from Option-typed source resolves correctly.
+fn process_entities() {
+    let opt: Option<User> = Some(User);
+    let alias = opt;
+    alias.save();
+
+    let repo: Repo = Repo;
+    repo.save();
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/repo.rs
new file mode 100644
index 000000000..dc20dc405
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/repo.rs
@@ -0,0 +1,5 @@
+pub struct Repo;
+
+impl Repo {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/user.rs
new file mode 100644
index 000000000..e58906565
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-option-receiver/src/user.rs
@@ -0,0 +1,5 @@
+pub struct User;
+
+impl User {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/main.rs
new file mode 100644
index 000000000..55e670ac3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/main.rs
@@ -0,0 +1,11 @@
+mod models;
+
+use crate::models::{User, Repo};
+
+fn main() {
+    let user = User::new("alice");
+    user.save();
+
+    let repo = Repo::new("my-repo");
+    repo.clone_repo();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/mod.rs b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/mod.rs
new file mode 100644
index 000000000..9a6f90be8
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/mod.rs
@@ -0,0 +1,5 @@
+mod user;
+mod repo;
+
+pub use user::User;
+pub use repo::Repo;
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/repo.rs b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/repo.rs
new file mode 100644
index 000000000..c76fd9270
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/repo.rs
@@ -0,0 +1,13 @@
+pub struct Repo {
+    name: String,
+}
+
+impl Repo {
+    pub fn new(name: &str) -> Self {
+        Repo { name: name.to_string() }
+    }
+
+    pub fn clone_repo(&self) {
+        println!("Cloning repo {}", self.name);
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/user.rs b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/user.rs
new file mode 100644
index 000000000..23a1d2368
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-scoped-multi-file/src/models/user.rs
@@ -0,0 +1,13 @@
+pub struct User {
+    name: String,
+}
+
+impl User {
+    pub fn new(name: &str) -> Self {
+        User { name: name.to_string() }
+    }
+
+    pub fn save(&self) {
+        println!("Saving user {}", self.name);
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/main.rs b/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/main.rs
new file mode 100644
index 000000000..92faf8afa
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/main.rs
@@ -0,0 +1,12 @@
+mod point;
+mod vec2;
+
+use crate::point::Point;
+
+fn process(p: Point) {
+    let Point { x, y } = p;
+    x.save();
+    y.save();
+}
+
+fn main() {}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/point.rs b/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/point.rs
new file mode 100644
index 000000000..690f27b46
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/point.rs
@@ -0,0 +1,6 @@
+use crate::vec2::Vec2;
+
+pub struct Point {
+    pub x: Vec2,
+    pub y: Vec2,
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/vec2.rs b/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/vec2.rs
new file mode 100644
index 000000000..be9ebe879
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-struct-destructuring/vec2.rs
@@ -0,0 +1,7 @@
+pub struct Vec2 {
+    pub value: f32,
+}
+
+impl Vec2 {
+    pub fn save(&self) {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-write-access/models.rs b/gitnexus/test/fixtures/lang-resolution/rust-write-access/models.rs
new file mode 100644
index 000000000..5971e1780
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-write-access/models.rs
@@ -0,0 +1,9 @@
+pub struct Address {
+    pub city: String,
+}
+
+pub struct User {
+    pub name: String,
+    pub address: Address,
+    pub score: i32,
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/rust-write-access/service.rs b/gitnexus/test/fixtures/lang-resolution/rust-write-access/service.rs
new file mode 100644
index 000000000..1c6326b8f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/rust-write-access/service.rs
@@ -0,0 +1,7 @@
+use crate::models::{User, Address};
+
+fn update_user(user: &mut User) {
+    user.name = String::from("Alice");
+    user.address = Address { city: String::from("NYC") };
+    user.score += 10;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/app.ts
new file mode 100644
index 000000000..d8a84d558
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/app.ts
@@ -0,0 +1,15 @@
+import { User } from './user';
+import { Repo } from './repo';
+
+function getUser(): User { return new User(); }
+function getRepo(): Repo { return new Repo(); }
+
+export function processEntities(): void {
+  const u: User = getUser();
+  const alias = u;
+  alias.save();
+
+  const r: Repo = getRepo();
+  const rAlias = r;
+  rAlias.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/repo.ts b/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/repo.ts
new file mode 100644
index 000000000..19631246b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/repo.ts
@@ -0,0 +1,5 @@
+export class Repo {
+  save(): boolean {
+    return false;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/user.ts b/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/user.ts
new file mode 100644
index 000000000..e2af97ca7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-assignment-chain/src/user.ts
@@ -0,0 +1,5 @@
+export class User {
+  save(): boolean {
+    return true;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/app.ts
new file mode 100644
index 000000000..9487a533e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/app.ts
@@ -0,0 +1,12 @@
+import { getUser } from './service';
+
+function processUser() {
+  const user = getUser('alice');
+  user.save();
+}
+
+function processAlias() {
+  const user = getUser('bob');
+  const alias = user;
+  alias.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/models.ts
new file mode 100644
index 000000000..d5470115f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/models.ts
@@ -0,0 +1,11 @@
+export class User {
+  name: string;
+
+  constructor(name: string) {
+    this.name = name;
+  }
+
+  save(): boolean {
+    return true;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/service.ts
new file mode 100644
index 000000000..39ac0b938
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-call-result-binding/service.ts
@@ -0,0 +1,5 @@
+import { User } from './models';
+
+export function getUser(name: string): User {
+  return new User(name);
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/app.ts
new file mode 100644
index 000000000..c1d029e2c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/app.ts
@@ -0,0 +1,19 @@
+import { User } from './models/user';
+import { Repo } from './models/repo';
+
+class UserService {
+  private users: User[] = [];
+  private repos: Map<string, Repo> = new Map();
+
+  processUsers() {
+    for (const user of this.users) {
+      user.save();
+    }
+  }
+
+  processRepos() {
+    for (const repo of this.repos.values()) {
+      repo.save();
+    }
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/models/repo.ts b/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/models/repo.ts
new file mode 100644
index 000000000..ed84b12ff
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/models/repo.ts
@@ -0,0 +1,3 @@
+export class Repo {
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/models/user.ts b/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/models/user.ts
new file mode 100644
index 000000000..a464054e0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-class-field-foreach/models/user.ts
@@ -0,0 +1,3 @@
+export class User {
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-deep-field-chain/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-deep-field-chain/models.ts
new file mode 100644
index 000000000..b28b0a6ee
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-deep-field-chain/models.ts
@@ -0,0 +1,25 @@
+export class City {
+  zipCode: string;
+
+  getName(): string {
+    return 'city';
+  }
+}
+
+export class Address {
+  city: City;
+  street: string;
+
+  save(): void {
+    // persist address
+  }
+}
+
+export class User {
+  name: string;
+  address: Address;
+
+  greet(): string {
+    return this.name;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-deep-field-chain/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-deep-field-chain/service.ts
new file mode 100644
index 000000000..bf561827d
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-deep-field-chain/service.ts
@@ -0,0 +1,9 @@
+import { User } from './models';
+
+function processUser(user: User) {
+  // 2-level chain: user.address → Address, then .save() → Address#save
+  user.address.save();
+
+  // 3-level chain: user.address → Address, .city → City, .getName() → City#getName
+  user.address.city.getName();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/address.ts b/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/address.ts
new file mode 100644
index 000000000..68559457c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/address.ts
@@ -0,0 +1,7 @@
+export class Address {
+  city: string;
+
+  save(): void {
+    // persist address
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/service.ts
new file mode 100644
index 000000000..4c78a3fa2
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/service.ts
@@ -0,0 +1,7 @@
+import { User } from './user';
+
+function processUser(user: User) {
+  // Field-access chain: user.address resolves to Address, then .save() must resolve
+  // to Address#save (NOT User#save) — only lookupFieldByOwner can disambiguate.
+  user.address.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/user.ts b/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/user.ts
new file mode 100644
index 000000000..6386ecbf7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-field-type-disambig/user.ts
@@ -0,0 +1,10 @@
+import { Address } from './address';
+
+export class User {
+  name: string;
+  address: Address;
+
+  save(): void {
+    // persist user
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-fixpoint-for-loop/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-fixpoint-for-loop/src/app.ts
new file mode 100644
index 000000000..b2c133b91
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-fixpoint-for-loop/src/app.ts
@@ -0,0 +1,8 @@
+import { getUsers } from './models';
+
+function process() {
+  const users = getUsers();
+  for (const u of users) {
+    u.save();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-fixpoint-for-loop/src/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-fixpoint-for-loop/src/models.ts
new file mode 100644
index 000000000..3ab5ca5e6
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-fixpoint-for-loop/src/models.ts
@@ -0,0 +1,6 @@
+export class User {
+  save(): void {}
+}
+export function getUsers(): User[] {
+  return [];
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/app.ts
new file mode 100644
index 000000000..bb17f9e56
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/app.ts
@@ -0,0 +1,6 @@
+import { C } from './derived';
+
+function process() {
+  const c = new C();
+  c.greet().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/base.ts b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/base.ts
new file mode 100644
index 000000000..911a64970
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/base.ts
@@ -0,0 +1,5 @@
+import { Greeting } from './greeting';
+
+export class A {
+  greet(): Greeting { return new Greeting(); }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/derived.ts b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/derived.ts
new file mode 100644
index 000000000..16530f8cc
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/derived.ts
@@ -0,0 +1,2 @@
+import { B } from './middle';
+export class C extends B {}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/greeting.ts b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/greeting.ts
new file mode 100644
index 000000000..be956282a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/greeting.ts
@@ -0,0 +1,3 @@
+export class Greeting {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/middle.ts b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/middle.ts
new file mode 100644
index 000000000..cc1535135
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-grandparent-resolution/src/middle.ts
@@ -0,0 +1,2 @@
+import { A } from './base';
+export class B extends A {}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/app.ts
new file mode 100644
index 000000000..20fd79807
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/app.ts
@@ -0,0 +1,8 @@
+import { getUser } from './service';
+
+function processChain() {
+  const user = getUser();
+  const addr = user.address;
+  const city = addr.getCity();
+  city.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/models.ts
new file mode 100644
index 000000000..2d2d69098
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/models.ts
@@ -0,0 +1,31 @@
+export class City {
+  name: string;
+
+  constructor(name: string) {
+    this.name = name;
+  }
+
+  save(): boolean {
+    return true;
+  }
+}
+
+export class Address {
+  city: City;
+
+  constructor(city: City) {
+    this.city = city;
+  }
+
+  getCity(): City {
+    return this.city;
+  }
+}
+
+export class User {
+  address: Address;
+
+  constructor(address: Address) {
+    this.address = address;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/service.ts
new file mode 100644
index 000000000..e6720fcdf
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-method-chain-binding/service.ts
@@ -0,0 +1,5 @@
+import { User, Address, City } from './models';
+
+export function getUser(): User {
+  return new User(new Address(new City('NYC')));
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-mixed-chain/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-mixed-chain/models.ts
new file mode 100644
index 000000000..baeb43deb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-mixed-chain/models.ts
@@ -0,0 +1,27 @@
+export class City {
+  getName(): string {
+    return 'city';
+  }
+}
+
+export class Address {
+  city: City;
+
+  save(): void {
+    // persist address
+  }
+}
+
+export class User {
+  address: Address;
+
+  getAddress(): Address {
+    return this.address;
+  }
+}
+
+export class UserService {
+  getUser(): User {
+    return new User();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-mixed-chain/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-mixed-chain/service.ts
new file mode 100644
index 000000000..227d87fbb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-mixed-chain/service.ts
@@ -0,0 +1,11 @@
+import { User, UserService } from './models';
+
+function processWithService(svc: UserService) {
+  // call → field → call: svc.getUser().address.save()
+  svc.getUser().address.save();
+}
+
+function processWithUser(user: User) {
+  // field → call → call: user.getAddress().city.getName()
+  user.getAddress().city.getName();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/app.ts
new file mode 100644
index 000000000..81e72c032
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/app.ts
@@ -0,0 +1,22 @@
+import { User } from './user';
+import { Repo } from './repo';
+
+function getUser(): User { return new User(); }
+function getRepo(): Repo { return new Repo(); }
+
+// Multi-hop forward-declared chain: a → b → c (source order)
+// All three should resolve because the post-walk pass processes in order.
+export function multiHopForward(): void {
+  const a: User = getUser();
+  const b = a;
+  const c = b;
+  c.save();
+}
+
+// Multi-hop with Repo to prove disambiguation
+export function multiHopRepo(): void {
+  const a: Repo = getRepo();
+  const b = a;
+  const c = b;
+  c.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/repo.ts b/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/repo.ts
new file mode 100644
index 000000000..19631246b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/repo.ts
@@ -0,0 +1,5 @@
+export class Repo {
+  save(): boolean {
+    return false;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/user.ts b/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/user.ts
new file mode 100644
index 000000000..e2af97ca7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-multi-hop-chain/src/user.ts
@@ -0,0 +1,5 @@
+export class User {
+  save(): boolean {
+    return true;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-null-check-narrowing/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-null-check-narrowing/src/app.ts
new file mode 100644
index 000000000..2242d32df
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-null-check-narrowing/src/app.ts
@@ -0,0 +1,25 @@
+import { User } from './models';
+
+function processStrict(x: User | null) {
+  if (x !== null) {
+    x.save();
+  }
+}
+
+function processLoose(x: User | null) {
+  if (x != null) {
+    x.save();
+  }
+}
+
+function processUndefined(x: User | undefined) {
+  if (x !== undefined) {
+    x.save();
+  }
+}
+
+const processFuncExpr = function(x: User | null) {
+  if (x !== null) {
+    x.save();
+  }
+};
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-null-check-narrowing/src/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-null-check-narrowing/src/models.ts
new file mode 100644
index 000000000..0d7a294b0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-null-check-narrowing/src/models.ts
@@ -0,0 +1,7 @@
+export class User {
+  save(): void {}
+}
+
+export class Repo {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/app.ts
new file mode 100644
index 000000000..35f140d69
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/app.ts
@@ -0,0 +1,27 @@
+import { User } from './user';
+import { Repo } from './repo';
+
+function findUser(): User | null { return new User(); }
+function findRepo(): Repo | undefined { return new Repo(); }
+
+// Nullable type + assignment chain: the nullable union must be stripped
+// before the alias can resolve to User.
+export function nullableChainUser(): void {
+  const u: User | null = findUser();
+  const alias = u;
+  alias.save();
+}
+
+// Same pattern with Repo | undefined
+export function nullableChainRepo(): void {
+  const r: Repo | undefined = findRepo();
+  const alias = r;
+  alias.save();
+}
+
+// Triple nullable: User | null | undefined → still User
+export function tripleNullable(): void {
+  const u: User | null | undefined = findUser();
+  const alias = u;
+  alias.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/repo.ts b/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/repo.ts
new file mode 100644
index 000000000..19631246b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/repo.ts
@@ -0,0 +1,5 @@
+export class Repo {
+  save(): boolean {
+    return false;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/user.ts b/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/user.ts
new file mode 100644
index 000000000..e2af97ca7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-nullable-chain/src/user.ts
@@ -0,0 +1,5 @@
+export class User {
+  save(): boolean {
+    return true;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/app.ts
new file mode 100644
index 000000000..ed84e7763
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/app.ts
@@ -0,0 +1,13 @@
+import { getUser } from './service';
+
+function processDestructured() {
+  const user = getUser();
+  const { address } = user;
+  address.save();
+}
+
+function processMultiField() {
+  const user = getUser();
+  const { name, address } = user;
+  address.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/models.ts
new file mode 100644
index 000000000..88c11bcd0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/models.ts
@@ -0,0 +1,9 @@
+export class Address {
+  city: string = '';
+  save(): boolean { return true; }
+}
+
+export class User {
+  name: string = '';
+  address: Address = new Address();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/service.ts
new file mode 100644
index 000000000..7ca8d0f87
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-object-destructuring/src/service.ts
@@ -0,0 +1,2 @@
+import { User } from './models';
+export function getUser(): User { return new User(); }
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-optional-params/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-optional-params/src/app.ts
new file mode 100644
index 000000000..5cafe322b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-optional-params/src/app.ts
@@ -0,0 +1,14 @@
+function greet(name: string, greeting: string = "Hello"): string {
+  return greeting + ", " + name;
+}
+
+function search(query: string, limit?: number): string[] {
+  return [];
+}
+
+function process() {
+  greet("Alice");
+  greet("Bob", "Hi");
+  search("test");
+  search("test", 10);
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-overload-disambiguation/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-overload-disambiguation/src/app.ts
new file mode 100644
index 000000000..76e4efc85
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-overload-disambiguation/src/app.ts
@@ -0,0 +1,10 @@
+function lookup(id: number): string;
+function lookup(name: string): string;
+function lookup(key: number | string): string {
+    return String(key);
+}
+
+function process() {
+    lookup(42);
+    lookup("alice");
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-param-property-fields/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-param-property-fields/models.ts
new file mode 100644
index 000000000..513af1e9f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-param-property-fields/models.ts
@@ -0,0 +1,22 @@
+export class Address {
+  city: string;
+
+  save(): void {
+    // persist address
+  }
+}
+
+export class User {
+  #secret: string;
+
+  constructor(
+    public name: string,
+    public address: Address,
+  ) {
+    this.#secret = 'hidden';
+  }
+
+  greet(): string {
+    return this.name;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-param-property-fields/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-param-property-fields/service.ts
new file mode 100644
index 000000000..e11269c12
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-param-property-fields/service.ts
@@ -0,0 +1,5 @@
+import { User } from './models';
+
+function processUser(user: User) {
+  user.address.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/app.ts
new file mode 100644
index 000000000..a7a0ea41a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/app.ts
@@ -0,0 +1,14 @@
+import { User } from './models/user';
+import { Repo } from './models/repo';
+
+function processUsers(users: readonly User[]) {
+  for (const user of users) {
+    user.save();
+  }
+}
+
+function processRepos(repos: readonly Repo[]) {
+  for (const repo of repos) {
+    repo.save();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/models/repo.ts b/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/models/repo.ts
new file mode 100644
index 000000000..ed84b12ff
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/models/repo.ts
@@ -0,0 +1,3 @@
+export class Repo {
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/models/user.ts b/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/models/user.ts
new file mode 100644
index 000000000..a464054e0
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-readonly-foreach/models/user.ts
@@ -0,0 +1,3 @@
+export class User {
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-virtual-dispatch/src/app.ts b/gitnexus/test/fixtures/lang-resolution/ts-virtual-dispatch/src/app.ts
new file mode 100644
index 000000000..fe1df20ee
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-virtual-dispatch/src/app.ts
@@ -0,0 +1,27 @@
+// All classes in same file so parentMap captures the extends relationship
+
+class Animal {
+  speak(): string {
+    return '...';
+  }
+}
+
+class Dog extends Animal {
+  speak(): string {
+    return 'woof';
+  }
+
+  fetchBall(): string {
+    return 'ball';
+  }
+}
+
+export function run(): void {
+  // Virtual dispatch: declared as Animal, constructed as Dog
+  const animal: Animal = new Dog();
+  animal.fetchBall();  // Only Dog has fetchBall — proves virtual dispatch override
+
+  // Direct type: no override needed
+  const dog: Dog = new Dog();
+  dog.fetchBall();     // Direct resolution to Dog#fetchBall
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-write-access/models.ts b/gitnexus/test/fixtures/lang-resolution/ts-write-access/models.ts
new file mode 100644
index 000000000..53d1e79eb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-write-access/models.ts
@@ -0,0 +1,8 @@
+export class Address {
+  city: string;
+}
+
+export class User {
+  name: string;
+  address: Address;
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/ts-write-access/service.ts b/gitnexus/test/fixtures/lang-resolution/ts-write-access/service.ts
new file mode 100644
index 000000000..4d3845af1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/ts-write-access/service.ts
@@ -0,0 +1,9 @@
+import { User, Address } from './models';
+
+function updateUser(user: User) {
+  // Write access: user.name = "Alice"
+  user.name = "Alice";
+
+  // Write access: user.address = new Address()
+  user.address = new Address();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/app.ts
new file mode 100644
index 000000000..4d77b4620
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/app.ts
@@ -0,0 +1,6 @@
+import { UserService } from './services/UserService';
+
+export function processUser(): void {
+  const svc = new UserService();
+  svc.getUser().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/models/Repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/models/Repo.ts
new file mode 100644
index 000000000..340937eb3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/models/Repo.ts
@@ -0,0 +1,3 @@
+export class Repo {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/models/User.ts b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/models/User.ts
new file mode 100644
index 000000000..a0a791e8e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/models/User.ts
@@ -0,0 +1,3 @@
+export class User {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/services/UserService.ts b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/services/UserService.ts
new file mode 100644
index 000000000..510f53664
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-chain-call/services/UserService.ts
@@ -0,0 +1,7 @@
+import { User } from '../models/User';
+
+export class UserService {
+  getUser(): User {
+    return new User();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/app.ts
new file mode 100644
index 000000000..d16ea64bb
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/app.ts
@@ -0,0 +1,7 @@
+import { User } from './user';
+
+function processEntries(entries: Map<string, User>) {
+  for (const [key, user] of entries) {
+    user.save();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/repo.ts
new file mode 100644
index 000000000..653bd2c51
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/repo.ts
@@ -0,0 +1,4 @@
+export class Repo {
+  constructor(public name: string) {}
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/user.ts b/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/user.ts
new file mode 100644
index 000000000..a4f084b28
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-destructured-for-of/src/user.ts
@@ -0,0 +1,4 @@
+export class User {
+  constructor(public name: string) {}
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/main.ts b/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/main.ts
new file mode 100644
index 000000000..330048c14
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/main.ts
@@ -0,0 +1,14 @@
+import { getUsers } from './models/user';
+import { getRepos } from './models/repo';
+
+function processUsers(): void {
+  for (const user of getUsers()) {
+    user.save();
+  }
+}
+
+function processRepos(): void {
+  for (const repo of getRepos()) {
+    repo.save();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/models/repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/models/repo.ts
new file mode 100644
index 000000000..908aaf552
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/models/repo.ts
@@ -0,0 +1,9 @@
+export class Repo {
+  name: string;
+  constructor(name: string) { this.name = name; }
+  save(): void {}
+}
+
+export function getRepos(): Repo[] {
+  return [new Repo("main")];
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/models/user.ts b/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/models/user.ts
new file mode 100644
index 000000000..7f8334fba
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-for-of-call-expr/models/user.ts
@@ -0,0 +1,9 @@
+export class User {
+  name: string;
+  constructor(name: string) { this.name = name; }
+  save(): void {}
+}
+
+export function getUsers(): User[] {
+  return [new User("alice")];
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/app.ts
new file mode 100644
index 000000000..5b94bce5f
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/app.ts
@@ -0,0 +1,7 @@
+import { User } from './user';
+
+function process(x) {
+  if (x instanceof User) {
+    x.save();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/repo.ts
new file mode 100644
index 000000000..653bd2c51
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/repo.ts
@@ -0,0 +1,4 @@
+export class Repo {
+  constructor(public name: string) {}
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/user.ts b/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/user.ts
new file mode 100644
index 000000000..a4f084b28
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-instanceof-narrowing/src/user.ts
@@ -0,0 +1,4 @@
+export class User {
+  constructor(public name: string) {}
+  save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/app.ts
new file mode 100644
index 000000000..1599b2832
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/app.ts
@@ -0,0 +1,18 @@
+import { User } from './models/User';
+import { Repo } from './models/Repo';
+
+class UserService {
+    processUsers(users: User[]) {
+        for (const user of this.users) {
+            user.save();
+        }
+    }
+}
+
+class RepoService {
+    processRepos(repos: Repo[]) {
+        for (const repo of this.repos) {
+            repo.save();
+        }
+    }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/models/Repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/models/Repo.ts
new file mode 100644
index 000000000..c97f1ed86
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/models/Repo.ts
@@ -0,0 +1,3 @@
+export class Repo {
+    save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/models/User.ts b/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/models/User.ts
new file mode 100644
index 000000000..265b3f05c
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-member-access-for-loop/src/models/User.ts
@@ -0,0 +1,3 @@
+export class User {
+    save() {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/app.ts
new file mode 100644
index 000000000..41e8275a1
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/app.ts
@@ -0,0 +1,12 @@
+import { User } from './models/User';
+import { Repo } from './models/Repo';
+
+// Both 'user' and 'repo' are created via constructor inference (no type annotation).
+// The enclosing scope is 'run@0', with varNames 'user' and 'repo'.
+// user.save() must resolve to User#save and repo.save() must resolve to Repo#save.
+export function run(): void {
+  const user = new User();
+  const repo = new Repo();
+  user.save();
+  repo.save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/db/Cache.ts b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/db/Cache.ts
new file mode 100644
index 000000000..15aa58789
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/db/Cache.ts
@@ -0,0 +1,3 @@
+export class Cache {
+  store(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/db/Database.ts b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/db/Database.ts
new file mode 100644
index 000000000..f45b31d9a
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/db/Database.ts
@@ -0,0 +1,3 @@
+export class Database {
+  persist(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/models/Repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/models/Repo.ts
new file mode 100644
index 000000000..19631246b
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/models/Repo.ts
@@ -0,0 +1,5 @@
+export class Repo {
+  save(): boolean {
+    return false;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/models/User.ts b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/models/User.ts
new file mode 100644
index 000000000..e2af97ca7
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-overloaded-receiver/models/User.ts
@@ -0,0 +1,5 @@
+export class User {
+  save(): boolean {
+    return true;
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/app.ts
new file mode 100644
index 000000000..7beccfd55
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/app.ts
@@ -0,0 +1,7 @@
+import { UserService } from './services/UserService';
+
+// Chain base is a class name, not a variable.
+// Requires class-as-receiver fallback on the chain base resolution.
+export function processUser(): void {
+  UserService.findUser().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/models/Repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/models/Repo.ts
new file mode 100644
index 000000000..340937eb3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/models/Repo.ts
@@ -0,0 +1,3 @@
+export class Repo {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/models/User.ts b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/models/User.ts
new file mode 100644
index 000000000..a0a791e8e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/models/User.ts
@@ -0,0 +1,3 @@
+export class User {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/services/UserService.ts b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/services/UserService.ts
new file mode 100644
index 000000000..54f12c139
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-static-chain/services/UserService.ts
@@ -0,0 +1,7 @@
+import { User } from '../models/User';
+
+export class UserService {
+  static findUser(): User {
+    return new User();
+  }
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/app.ts b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/app.ts
new file mode 100644
index 000000000..23b1fda90
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/app.ts
@@ -0,0 +1,7 @@
+import { UserService } from './services/UserService';
+
+// svc is typed via parameter annotation, NOT constructor binding.
+// The chain base type must come from typeEnv, not receiverMap.
+export function processUser(svc: UserService): void {
+  svc.getUser().save();
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/models/Repo.ts b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/models/Repo.ts
new file mode 100644
index 000000000..340937eb3
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/models/Repo.ts
@@ -0,0 +1,3 @@
+export class Repo {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/models/User.ts b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/models/User.ts
new file mode 100644
index 000000000..a0a791e8e
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/models/User.ts
@@ -0,0 +1,3 @@
+export class User {
+  save(): void {}
+}
diff --git a/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/services/UserService.ts b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/services/UserService.ts
new file mode 100644
index 000000000..510f53664
--- /dev/null
+++ b/gitnexus/test/fixtures/lang-resolution/typescript-typed-param-chain/services/UserService.ts
@@ -0,0 +1,7 @@
+import { User } from '../models/User';
+
+export class UserService {
+  getUser(): User {
+    return new User();
+  }
+}
diff --git a/gitnexus/test/fixtures/local-backend-seed.ts b/gitnexus/test/fixtures/local-backend-seed.ts
index f99311068..6958fe5b5 100644
--- a/gitnexus/test/fixtures/local-backend-seed.ts
+++ b/gitnexus/test/fixtures/local-backend-seed.ts
@@ -10,6 +10,10 @@ export const LOCAL_BACKEND_SEED_DATA = [
   `CREATE (fn:Function {id: 'func:hash', name: 'hash', filePath: 'src/utils.ts', startLine: 1, endLine: 8, isExported: true, content: 'function hash() {}', description: 'Hash utility'})`,
   // Class
   `CREATE (c:Class {id: 'class:AuthService', name: 'AuthService', filePath: 'src/auth.ts', startLine: 30, endLine: 60, isExported: true, content: 'class AuthService {}', description: 'Authentication service'})`,
+  `CREATE (c:Class {id: 'class:BaseService', name: 'BaseService', filePath: 'src/base.ts', startLine: 1, endLine: 20, isExported: true, content: 'class BaseService {}', description: 'Base service class'})`,
+  // Methods
+  `CREATE (m:Method {id: 'method:AuthService.authenticate', name: 'authenticate', filePath: 'src/auth.ts', startLine: 35, endLine: 45, isExported: false, content: 'authenticate() {}', description: 'Authenticate user'})`,
+  `CREATE (m:Method {id: 'method:BaseService.authenticate', name: 'authenticate', filePath: 'src/base.ts', startLine: 5, endLine: 10, isExported: false, content: 'authenticate() {}', description: 'Base authenticate'})`,
   // Community
   `CREATE (c:Community {id: 'comm:auth', label: 'Auth', heuristicLabel: 'Authentication', keywords: ['auth', 'login'], description: 'Auth module', enrichedBy: 'heuristic', cohesion: 0.8, symbolCount: 3})`,
   // Process
@@ -25,10 +29,20 @@ export const LOCAL_BACKEND_SEED_DATA = [
    CREATE (a)-[:CodeRelation {type: 'STEP_IN_PROCESS', confidence: 1.0, reason: '', step: 1}]->(p)`,
   `MATCH (a:Function), (p:Process) WHERE a.id = 'func:validate' AND p.id = 'proc:login-flow'
    CREATE (a)-[:CodeRelation {type: 'STEP_IN_PROCESS', confidence: 1.0, reason: '', step: 2}]->(p)`,
+  // HAS_METHOD: AuthService -> authenticate
+  `MATCH (c:Class), (m:Method) WHERE c.id = 'class:AuthService' AND m.id = 'method:AuthService.authenticate'
+   CREATE (c)-[:CodeRelation {type: 'HAS_METHOD', confidence: 1.0, reason: 'class-method', step: 0}]->(m)`,
+  // OVERRIDES: AuthService.authenticate -> BaseService.authenticate
+  `MATCH (a:Method), (b:Method) WHERE a.id = 'method:AuthService.authenticate' AND b.id = 'method:BaseService.authenticate'
+   CREATE (a)-[:CodeRelation {type: 'OVERRIDES', confidence: 1.0, reason: 'mro-resolution', step: 0}]->(b)`,
+  // HAS_METHOD: BaseService -> authenticate
+  `MATCH (c:Class), (m:Method) WHERE c.id = 'class:BaseService' AND m.id = 'method:BaseService.authenticate'
+   CREATE (c)-[:CodeRelation {type: 'HAS_METHOD', confidence: 1.0, reason: 'class-method', step: 0}]->(m)`,
 ];
 
 export const LOCAL_BACKEND_FTS_INDEXES: FTSIndexDef[] = [
   { table: 'Function', indexName: 'function_fts', columns: ['name', 'content', 'description'] },
   { table: 'Class', indexName: 'class_fts', columns: ['name', 'content', 'description'] },
+  { table: 'Method', indexName: 'method_fts', columns: ['name', 'content', 'description'] },
   { table: 'File', indexName: 'file_fts', columns: ['name', 'content'] },
 ];
diff --git a/gitnexus/test/global-setup.ts b/gitnexus/test/global-setup.ts
index 3faa9039d..f5760a1b1 100644
--- a/gitnexus/test/global-setup.ts
+++ b/gitnexus/test/global-setup.ts
@@ -41,14 +41,8 @@ export default async function setup({ provide }: GlobalSetupContext) {
     // FTS may already be installed system-wide — not fatal
   }
 
-  // Close native handles explicitly on Windows (file locks require it).
-  // On Linux/macOS, skip close — the N-API destructor hooks can segfault
-  // or deadlock. The teardown function removes the temp directory, and
-  // process exit reclaims all native resources.
-  if (process.platform === 'win32') {
-    conn.close();
-    db.close();
-  }
+  await conn.close();
+  await db.close();
 
   // Share the dbPath with all test files via inject('lbugDbPath')
   provide('lbugDbPath', dbPath);
diff --git a/gitnexus/test/helpers/test-indexed-db.ts b/gitnexus/test/helpers/test-indexed-db.ts
index e86ac235d..5f1aa32e3 100644
--- a/gitnexus/test/helpers/test-indexed-db.ts
+++ b/gitnexus/test/helpers/test-indexed-db.ts
@@ -5,8 +5,7 @@
  * Each test file clears all data, reseeds, and initializes adapters —
  * avoiding per-file schema creation overhead.
  *
- * Cleanup is intentionally a no-op: CI runs each LadybugDB test file in its
- * own vitest process, so the OS reclaims all native resources on exit.
+ * Cleanup properly closes adapters and releases native resources.
  *
  * Each test file gets a unique repoId to prevent MCP pool map collisions.
  * Seed data is NOT included — each test provides its own via options.seed.
@@ -27,7 +26,7 @@ export interface IndexedDBHandle {
   repoId: string;
   /** Temp directory handle for filesystem cleanup */
   tmpHandle: TestDBHandle;
-  /** Cleanup: detaches adapters (null-out, no native .close()) */
+  /** Cleanup: closes adapters and releases native resources */
   cleanup: () => Promise<void>;
 }
 
@@ -119,25 +118,26 @@ export function withTestLbugDB(
       }
     }
 
-    // 7. Close core adapter (Windows only), then open pool adapter (read-only).
-    //    On Windows, LadybugDB enforces file locks — writable + read-only
-    //    can't coexist on the same path, so we must close the core first.
-    //    On Linux/macOS, .close() deadlocks or segfaults via N-API
-    //    destructor hooks, but concurrent Database instances on the same
-    //    path are allowed, so we skip the close entirely.
+    // 7. Open pool adapter by injecting the core adapter's writable Database.
+    //    LadybugDB enforces file locks — writable + read-only can't coexist
+    //    on the same path, and db.close() segfaults on macOS due to N-API
+    //    destructor issues.  Reusing the writable Database avoids both problems.
+    //    Write protection is enforced at the query validation layer (isWriteQuery)
+    //    rather than at the native DB level.
     if (options?.poolAdapter) {
-      if (process.platform === 'win32') {
-        await adapter.closeLbug();
-      }
-      const { initLbug: poolInitLbug } = await import('../../src/mcp/core/lbug-adapter.js');
-      await poolInitLbug(repoId, dbPath);
+      const coreDb = adapter.getDatabase();
+      if (!coreDb) throw new Error('withTestLbugDB: core adapter has no open Database');
+      const { initLbugWithDb } = await import('../../src/mcp/core/lbug-adapter.js');
+      await initLbugWithDb(repoId, coreDb, dbPath);
     }
 
-    // Cleanup: intentionally a no-op. We do NOT call detachLbug() here
-    // because .closeSync() segfaults on Linux (LadybugDB N-API destructor bug).
-    // CI runs each LadybugDB test file in its own vitest process, so the OS
-    // reclaims all native resources on process exit — no explicit cleanup needed.
-    const cleanup = async () => {};
+    const cleanup = async () => {
+      if (options?.poolAdapter) {
+        const poolAdapter = await import('../../src/mcp/core/lbug-adapter.js');
+        await poolAdapter.closeLbug(repoId);
+      }
+      await adapter.closeLbug();
+    };
 
     // tmpHandle.dbPath → parent temp dir (not the lbug file) so tests
     // that create sibling directories (e.g. 'storage') still work.
diff --git a/gitnexus/test/integration/cli-e2e.test.ts b/gitnexus/test/integration/cli-e2e.test.ts
index 50a01fd6e..606e1a89f 100644
--- a/gitnexus/test/integration/cli-e2e.test.ts
+++ b/gitnexus/test/integration/cli-e2e.test.ts
@@ -9,7 +9,7 @@
  * Accepts status === null (timeout) as valid on slow CI runners.
  */
 import { describe, it, expect, beforeAll, afterAll } from 'vitest';
-import { spawnSync } from 'child_process';
+import { spawnSync, spawn } from 'child_process';
 import path from 'path';
 import fs from 'fs';
 import os from 'os';
@@ -231,4 +231,178 @@ describe('CLI end-to-end', () => {
     });
 
   });
+
+  // ─── stdout fd 1 tests (#324) ───────────────────────────────────────
+  // These tests verify that tool output goes to stdout (fd 1), not stderr.
+  // Requires analyze to have run first (the analyze test above populates .gitnexus/).
+
+  // All tool commands pass --repo to disambiguate when the global registry
+  // has multiple indexed repos (e.g. the parent project is also indexed).
+  describe('tool output goes to stdout via fd 1 (#324)', () => {
+    it('cypher: JSON appears on stdout, not stderr', () => {
+      const result = runCliRaw(['cypher', 'MATCH (n) RETURN n.name LIMIT 3', '--repo', 'mini-repo'], MINI_REPO);
+      if (result.status === null) return; // CI timeout tolerance
+
+      expect(result.status).toBe(0);
+
+      // stdout must contain valid JSON (array or object)
+      expect(() => JSON.parse(result.stdout.trim())).not.toThrow();
+
+      // stderr must NOT contain JSON — only human-readable diagnostics allowed
+      const stderrTrimmed = result.stderr.trim();
+      if (stderrTrimmed.length > 0) {
+        expect(() => JSON.parse(stderrTrimmed)).toThrow();
+      }
+    });
+
+    it('query: JSON appears on stdout, not stderr', () => {
+      // "handler" is a generic term likely to match something in mini-repo
+      const result = runCliRaw(['query', 'handler', '--repo', 'mini-repo'], MINI_REPO);
+      if (result.status === null) return;
+
+      expect(result.status).toBe(0);
+      expect(() => JSON.parse(result.stdout.trim())).not.toThrow();
+    });
+
+    it('impact: JSON appears on stdout, not stderr', () => {
+      const result = runCliRaw(
+        ['impact', 'handleRequest', '--direction', 'upstream', '--repo', 'mini-repo'],
+        MINI_REPO,
+      );
+      if (result.status === null) return;
+
+      expect(result.status).toBe(0);
+      // impact may return an error object (symbol not found) or a real result —
+      // either way it must be valid JSON on stdout
+      expect(() => JSON.parse(result.stdout.trim())).not.toThrow();
+    });
+
+    it('stdout is pipeable: cypher output parses as valid JSON', () => {
+      const result = runCliRaw(
+        ['cypher', 'MATCH (n:Function) RETURN n.name LIMIT 5', '--repo', 'mini-repo'],
+        MINI_REPO,
+      );
+      if (result.status === null) return;
+
+      expect(result.status).toBe(0);
+
+      // Simulate what jq does: parse stdout as JSON
+      const parsed = JSON.parse(result.stdout.trim());
+      expect(Array.isArray(parsed) || typeof parsed === 'object').toBe(true);
+    });
+  });
+
+  // ─── EPIPE clean exit test (#324) ───────────────────────────────────
+
+  describe('EPIPE handling (#324)', () => {
+    it('cypher: EPIPE exits with code 0, not stderr dump', () => {
+      return new Promise<void>((resolve, reject) => {
+        const child = spawn(
+          process.execPath,
+          ['--import', 'tsx', cliEntry, 'cypher', 'MATCH (n) RETURN n LIMIT 500', '--repo', 'mini-repo'],
+          {
+            cwd: MINI_REPO,
+            stdio: ['ignore', 'pipe', 'pipe'],
+            env: {
+              ...process.env,
+              NODE_OPTIONS: `${process.env.NODE_OPTIONS || ''} --max-old-space-size=8192`.trim(),
+            },
+          },
+        );
+
+        let stderrOutput = '';
+        child.stderr.on('data', (chunk: Buffer) => { stderrOutput += chunk.toString(); });
+
+        // Destroy stdout immediately — simulates `| head -0` (consumer closes early)
+        child.stdout.once('data', () => {
+          child.stdout.destroy(); // triggers EPIPE on next write
+        });
+
+        const timer = setTimeout(() => {
+          child.kill('SIGTERM');
+          // Timeout is acceptable on CI — not a failure
+          resolve();
+        }, 20000);
+
+        child.on('close', (code) => {
+          clearTimeout(timer);
+          try {
+            // Clean EPIPE exit: code 0
+            expect(code).toBe(0);
+            // No JSON payload should appear on stderr
+            const trimmed = stderrOutput.trim();
+            if (trimmed.length > 0) {
+              expect(() => JSON.parse(trimmed)).toThrow();
+            }
+            resolve();
+          } catch (err) {
+            reject(err);
+          }
+        });
+      });
+    }, 25000);
+  });
+
+  // ─── eval-server READY signal test (#324) ───────────────────────────
+
+  describe('eval-server READY signal (#324)', () => {
+    it('READY signal appears on stdout, not stderr', () => {
+      return new Promise<void>((resolve, reject) => {
+        const child = spawn(
+          process.execPath,
+          ['--import', 'tsx', cliEntry, 'eval-server', '--port', '0', '--idle-timeout', '3'],
+          {
+            cwd: MINI_REPO,
+            stdio: ['ignore', 'pipe', 'pipe'],
+            env: {
+              ...process.env,
+              NODE_OPTIONS: `${process.env.NODE_OPTIONS || ''} --max-old-space-size=8192`.trim(),
+            },
+          },
+        );
+
+        let stdoutBuffer = '';
+        let foundOnStdout = false;
+        let foundOnStderr = false;
+
+        child.stdout.on('data', (chunk: Buffer) => {
+          stdoutBuffer += chunk.toString();
+          if (stdoutBuffer.includes('GITNEXUS_EVAL_SERVER_READY:')) {
+            foundOnStdout = true;
+            child.kill('SIGTERM');
+          }
+        });
+
+        child.stderr.on('data', (chunk: Buffer) => {
+          const text = chunk.toString();
+          if (text.includes('GITNEXUS_EVAL_SERVER_READY:')) {
+            foundOnStderr = true;
+            child.kill('SIGTERM');
+          }
+        });
+
+        const timer = setTimeout(() => {
+          child.kill('SIGTERM');
+          // Timeout is acceptable on CI — not a failure
+          resolve();
+        }, 30000);
+
+        child.on('close', () => {
+          clearTimeout(timer);
+          try {
+            if (foundOnStderr) {
+              reject(new Error('READY signal appeared on stderr instead of stdout'));
+            } else if (foundOnStdout) {
+              resolve();
+            } else {
+              // eval-server may not start on all CI environments — don't fail
+              resolve();
+            }
+          } catch (err) {
+            reject(err);
+          }
+        });
+      });
+    }, 35000);
+  });
 });
diff --git a/gitnexus/test/integration/cross-file-binding.test.ts b/gitnexus/test/integration/cross-file-binding.test.ts
new file mode 100644
index 000000000..ca7c1c265
--- /dev/null
+++ b/gitnexus/test/integration/cross-file-binding.test.ts
@@ -0,0 +1,232 @@
+/**
+ * Phase 14: Cross-file type binding propagation
+ *
+ * When file A exports `const user = getUser()` (resolved to type User), and
+ * file B imports `user`, Phase 14 seeds `user → User` into file B's type
+ * environment, enabling `user.save()` in file B to produce a CALLS edge to
+ * User#save.
+ */
+import { describe, it, expect, beforeAll } from 'vitest';
+import path from 'path';
+import {
+  getRelationships,
+  getNodesByLabel,
+  runPipelineFromRepo,
+  type PipelineResult,
+} from './resolvers/helpers.js';
+
+const CROSS_FILE_FIXTURES = path.resolve(__dirname, '..', 'fixtures', 'cross-file-binding');
+
+// ---------------------------------------------------------------------------
+// Simple cross-file: models → service → app
+// models.ts exports getUser(): User
+// service.ts exports const user = getUser()   (user → User via call-result)
+// app.ts imports user from service → seeds user → User → resolves user.save()
+// ---------------------------------------------------------------------------
+
+describe('Cross-File Binding Propagation: TypeScript simple cross-file', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'ts-simple'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and getName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('getName');
+  });
+
+  it('detects getUser function and main function', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getUser');
+    expect(getNodesByLabel(result, 'Function')).toContain('main');
+  });
+
+  it('resolves user.save() in main() to User#save via cross-file binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'main' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves user.getName() in main() to User#getName via cross-file binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'getName' &&
+      c.source === 'main' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and getName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'getName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+
+  it('emits IMPORTS edges across all three files', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    // service.ts → models.ts and app.ts → service.ts
+    expect(imports.length).toBeGreaterThanOrEqual(2);
+    const paths = imports.map(e => `${e.sourceFilePath} → ${e.targetFilePath}`);
+    expect(paths.some(p => p.includes('service') && p.includes('models'))).toBe(true);
+    expect(paths.some(p => p.includes('app') && p.includes('service'))).toBe(true);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Re-export chain: core → index (barrel) → app
+// core.ts exports getConfig(): Config
+// index.ts re-exports getConfig from core (no new bindings)
+// app.ts imports getConfig from index, creates local const config = getConfig()
+// → config.validate() resolves to Config#validate via local call-result binding
+// ---------------------------------------------------------------------------
+
+describe('Cross-File Binding Propagation: TypeScript re-export chain', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'ts-reexport'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Config class with validate method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('Config');
+    expect(getNodesByLabel(result, 'Method')).toContain('validate');
+  });
+
+  it('detects getConfig function and init function', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getConfig');
+    expect(getNodesByLabel(result, 'Function')).toContain('init');
+  });
+
+  it('resolves config.validate() in init() to Config#validate', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const validateCall = calls.find(c =>
+      c.target === 'validate' &&
+      c.source === 'init' &&
+      c.targetFilePath.includes('core'),
+    );
+    expect(validateCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edge from Config to validate', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const edge = hasMethod.find(e => e.source === 'Config' && e.target === 'validate');
+    expect(edge).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// E3: Cross-file return type propagation
+// api.ts exports getConfig(): Config
+// consumer.ts imports getConfig, calls const c = getConfig(); c.validate()
+// → c is typed Config via importedReturnTypes (E3), enabling Config#validate edge
+// ---------------------------------------------------------------------------
+
+describe('Cross-File Binding Propagation: TypeScript E3 return type propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'ts-return-type'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Config class with validate method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('Config');
+    expect(getNodesByLabel(result, 'Method')).toContain('validate');
+  });
+
+  it('detects getConfig function and run function', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getConfig');
+    expect(getNodesByLabel(result, 'Function')).toContain('run');
+  });
+
+  it('resolves c.validate() in run() to Config#validate via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const validateCall = calls.find(c =>
+      c.target === 'validate' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('api'),
+    );
+    expect(validateCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edge from Config to validate', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const edge = hasMethod.find(e => e.source === 'Config' && e.target === 'validate');
+    expect(edge).toBeDefined();
+  });
+
+  it('emits IMPORTS edge from consumer to api', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('consumer') && e.targetFilePath.includes('api'),
+    );
+    expect(edge).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Circular imports: a.ts ↔ b.ts
+// a.ts imports getB from b.ts; b.ts imports A from a.ts
+// Conservative expectation: pipeline completes without error.
+// Cross-file binding propagation across cycles is not guaranteed.
+// ---------------------------------------------------------------------------
+
+describe('Cross-File Binding Propagation: TypeScript circular imports', () => {
+  let result: PipelineResult;
+  let pipelineError: unknown;
+
+  beforeAll(async () => {
+    try {
+      result = await runPipelineFromRepo(
+        path.join(CROSS_FILE_FIXTURES, 'ts-circular'),
+        () => {},
+      );
+    } catch (err) {
+      pipelineError = err;
+    }
+  }, 60000);
+
+  it('pipeline completes without throwing on circular imports', () => {
+    expect(pipelineError).toBeUndefined();
+  });
+
+  it('detects both class A and class B', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('A');
+    expect(getNodesByLabel(result, 'Class')).toContain('B');
+  });
+
+  it('detects doA and doB methods', () => {
+    expect(getNodesByLabel(result, 'Method')).toContain('doA');
+    expect(getNodesByLabel(result, 'Method')).toContain('doB');
+  });
+
+  it('detects processA and getB functions', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('processA');
+    expect(getNodesByLabel(result, 'Function')).toContain('getB');
+  });
+
+  it('emits IMPORTS edges reflecting the circular dependency', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const paths = imports.map(e => `${e.sourceFilePath} → ${e.targetFilePath}`);
+    // a.ts imports from b.ts
+    expect(paths.some(p => p.includes('a.ts') && p.includes('b.ts'))).toBe(true);
+    // b.ts imports from a.ts
+    expect(paths.some(p => p.includes('b.ts') && p.includes('a.ts'))).toBe(true);
+  });
+});
diff --git a/gitnexus/test/integration/filesystem-walker.test.ts b/gitnexus/test/integration/filesystem-walker.test.ts
index 0096aedb2..fe50915a3 100644
--- a/gitnexus/test/integration/filesystem-walker.test.ts
+++ b/gitnexus/test/integration/filesystem-walker.test.ts
@@ -107,6 +107,164 @@ describe('filesystem-walker', () => {
     });
   });
 
+  describe('.gitignore support', () => {
+    let gitignoreDir: string;
+
+    beforeAll(async () => {
+      gitignoreDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-walker-gitignore-'));
+
+      // Create directory structure
+      await fs.mkdir(path.join(gitignoreDir, 'src'), { recursive: true });
+      await fs.mkdir(path.join(gitignoreDir, 'data', 'cache'), { recursive: true });
+      await fs.mkdir(path.join(gitignoreDir, 'logs'), { recursive: true });
+
+      // Source files (should be indexed)
+      await fs.writeFile(path.join(gitignoreDir, 'src', 'index.ts'), 'export const main = () => {}');
+      await fs.writeFile(path.join(gitignoreDir, 'src', 'utils.ts'), 'export const helper = () => {}');
+
+      // Data files (should be ignored via .gitignore)
+      await fs.writeFile(path.join(gitignoreDir, 'data', 'cache', 'file.json'), '{}');
+      await fs.writeFile(path.join(gitignoreDir, 'logs', 'app.log'), 'log entry');
+
+      // .gitignore
+      await fs.writeFile(path.join(gitignoreDir, '.gitignore'), 'data/\nlogs/\n');
+    });
+
+    afterAll(async () => {
+      await fs.rm(gitignoreDir, { recursive: true, force: true });
+    });
+
+    it('excludes directories listed in .gitignore', async () => {
+      const files = await walkRepositoryPaths(gitignoreDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      // Source files should be present
+      expect(paths.some(p => p.includes('src/index.ts'))).toBe(true);
+      expect(paths.some(p => p.includes('src/utils.ts'))).toBe(true);
+
+      // Ignored directories should not be present
+      expect(paths.every(p => !p.includes('data/'))).toBe(true);
+      expect(paths.every(p => !p.includes('logs/'))).toBe(true);
+    });
+
+    it('still applies hardcoded ignore list alongside .gitignore', async () => {
+      // Add node_modules (hardcoded ignore) to verify both work
+      await fs.mkdir(path.join(gitignoreDir, 'node_modules', 'pkg'), { recursive: true });
+      await fs.writeFile(path.join(gitignoreDir, 'node_modules', 'pkg', 'index.js'), 'module.exports = {}');
+
+      const files = await walkRepositoryPaths(gitignoreDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths.every(p => !p.includes('node_modules'))).toBe(true);
+      expect(paths.every(p => !p.includes('data/'))).toBe(true);
+
+      await fs.rm(path.join(gitignoreDir, 'node_modules'), { recursive: true, force: true });
+    });
+  });
+
+  describe('.gitnexusignore support', () => {
+    let nexusignoreDir: string;
+
+    beforeAll(async () => {
+      nexusignoreDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-walker-nexusignore-'));
+
+      await fs.mkdir(path.join(nexusignoreDir, 'src'), { recursive: true });
+      await fs.mkdir(path.join(nexusignoreDir, 'local', 'grafana'), { recursive: true });
+
+      await fs.writeFile(path.join(nexusignoreDir, 'src', 'index.ts'), 'export const main = () => {}');
+      await fs.writeFile(path.join(nexusignoreDir, 'local', 'grafana', 'module.js'), 'var x = 1;');
+
+      // Only .gitnexusignore, no .gitignore
+      await fs.writeFile(path.join(nexusignoreDir, '.gitnexusignore'), 'local/\n');
+    });
+
+    afterAll(async () => {
+      await fs.rm(nexusignoreDir, { recursive: true, force: true });
+    });
+
+    it('excludes directories listed in .gitnexusignore', async () => {
+      const files = await walkRepositoryPaths(nexusignoreDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths.some(p => p.includes('src/index.ts'))).toBe(true);
+      expect(paths.every(p => !p.includes('local/'))).toBe(true);
+    });
+  });
+
+  describe('combined .gitignore + .gitnexusignore', () => {
+    let combinedDir: string;
+
+    beforeAll(async () => {
+      combinedDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-walker-combined-'));
+
+      await fs.mkdir(path.join(combinedDir, 'src'), { recursive: true });
+      await fs.mkdir(path.join(combinedDir, 'data'), { recursive: true });
+      await fs.mkdir(path.join(combinedDir, 'local', 'plugins'), { recursive: true });
+
+      await fs.writeFile(path.join(combinedDir, 'src', 'index.ts'), 'export const main = () => {}');
+      await fs.writeFile(path.join(combinedDir, 'data', 'dump.json'), '{}');
+      await fs.writeFile(path.join(combinedDir, 'local', 'plugins', 'module.js'), 'var x = 1;');
+
+      await fs.writeFile(path.join(combinedDir, '.gitignore'), 'data/\n');
+      await fs.writeFile(path.join(combinedDir, '.gitnexusignore'), 'local/\n');
+    });
+
+    afterAll(async () => {
+      await fs.rm(combinedDir, { recursive: true, force: true });
+    });
+
+    it('excludes directories from both files', async () => {
+      const files = await walkRepositoryPaths(combinedDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths.some(p => p.includes('src/index.ts'))).toBe(true);
+      expect(paths.every(p => !p.includes('data/'))).toBe(true);
+      expect(paths.every(p => !p.includes('local/'))).toBe(true);
+    });
+  });
+
+  describe('GITNEXUS_NO_GITIGNORE env var', () => {
+    let envDir: string;
+
+    beforeAll(async () => {
+      envDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-walker-noignore-'));
+
+      await fs.mkdir(path.join(envDir, 'src'), { recursive: true });
+      await fs.mkdir(path.join(envDir, 'data'), { recursive: true });
+
+      await fs.writeFile(path.join(envDir, 'src', 'index.ts'), 'export const main = () => {}');
+      await fs.writeFile(path.join(envDir, 'data', 'dump.json'), '{}');
+
+      await fs.writeFile(path.join(envDir, '.gitignore'), 'data/\n');
+    });
+
+    afterAll(async () => {
+      await fs.rm(envDir, { recursive: true, force: true });
+    });
+
+    it('excludes gitignored directory by default', async () => {
+      const files = await walkRepositoryPaths(envDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+      expect(paths.every(p => !p.includes('data/'))).toBe(true);
+    });
+
+    it('includes gitignored directory when GITNEXUS_NO_GITIGNORE is set', async () => {
+      const original = process.env.GITNEXUS_NO_GITIGNORE;
+      process.env.GITNEXUS_NO_GITIGNORE = '1';
+      try {
+        const files = await walkRepositoryPaths(envDir);
+        const paths = files.map(f => f.path.replace(/\\/g, '/'));
+        expect(paths.some(p => p.includes('data/dump.json'))).toBe(true);
+      } finally {
+        if (original === undefined) {
+          delete process.env.GITNEXUS_NO_GITIGNORE;
+        } else {
+          process.env.GITNEXUS_NO_GITIGNORE = original;
+        }
+      }
+    });
+  });
+
   describe('readFileContents', () => {
     it('reads file contents by relative paths', async () => {
       const contents = await readFileContents(tmpDir, ['src/index.ts', 'src/utils.ts']);
diff --git a/gitnexus/test/integration/ignore-and-skip-e2e.test.ts b/gitnexus/test/integration/ignore-and-skip-e2e.test.ts
new file mode 100644
index 000000000..03720f4b9
--- /dev/null
+++ b/gitnexus/test/integration/ignore-and-skip-e2e.test.ts
@@ -0,0 +1,152 @@
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import fs from 'fs/promises';
+import path from 'path';
+import os from 'os';
+import { walkRepositoryPaths, readFileContents } from '../../src/core/ingestion/filesystem-walker.js';
+import { processParsing } from '../../src/core/ingestion/parsing-processor.js';
+import { createKnowledgeGraph } from '../../src/core/graph/graph.js';
+import { createSymbolTable } from '../../src/core/ingestion/symbol-table.js';
+import { createASTCache } from '../../src/core/ingestion/ast-cache.js';
+import { isLanguageAvailable } from '../../src/core/tree-sitter/parser-loader.js';
+import { SupportedLanguages } from '../../src/config/supported-languages.js';
+
+// ============================================================================
+// E2E: .gitignore + .gitnexusignore + unsupported language skip
+// ============================================================================
+
+describe('ignore + language-skip E2E', () => {
+  let tmpDir: string;
+
+  beforeAll(async () => {
+    tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-e2e-ignore-skip-'));
+
+    // Create directory structure
+    await fs.mkdir(path.join(tmpDir, 'src'), { recursive: true });
+    await fs.mkdir(path.join(tmpDir, 'data'), { recursive: true });
+    await fs.mkdir(path.join(tmpDir, 'vendor'), { recursive: true });
+
+    // .gitignore — excludes data/ and *.log
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), 'data/\n*.log\n');
+
+    // .gitnexusignore — excludes vendor/
+    await fs.writeFile(path.join(tmpDir, '.gitnexusignore'), 'vendor/\n');
+
+    // Source files (should be indexed)
+    await fs.writeFile(
+      path.join(tmpDir, 'src', 'index.ts'),
+      "import { greet } from './greet';\n\nexport function main(): string {\n  return greet();\n}\n",
+    );
+    await fs.writeFile(
+      path.join(tmpDir, 'src', 'greet.ts'),
+      "export function greet(): string {\n  return 'hello';\n}\n",
+    );
+
+    // Swift file — triggers language skip when grammar unavailable
+    await fs.writeFile(
+      path.join(tmpDir, 'src', 'App.swift'),
+      'class App {\n    func run() {\n        print("running")\n    }\n}\n',
+    );
+
+    // Files that should be excluded
+    await fs.writeFile(path.join(tmpDir, 'data', 'seed.json'), '{}');
+    await fs.writeFile(path.join(tmpDir, 'vendor', 'lib.js'), 'var x = 1;\n');
+    await fs.writeFile(path.join(tmpDir, 'debug.log'), 'debug log entry\n');
+  });
+
+  afterAll(async () => {
+    try {
+      await fs.rm(tmpDir, { recursive: true, force: true });
+    } catch { /* best-effort */ }
+  });
+
+  // ── File Discovery ──────────────────────────────────────────────────
+
+  describe('file discovery (walkRepositoryPaths)', () => {
+    it('includes source files from src/', async () => {
+      const files = await walkRepositoryPaths(tmpDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths).toContain('src/index.ts');
+      expect(paths).toContain('src/greet.ts');
+    });
+
+    it('includes .swift files (discovery does not filter by language)', async () => {
+      const files = await walkRepositoryPaths(tmpDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      // Swift file should be discovered — language skip happens at parse time
+      expect(paths).toContain('src/App.swift');
+    });
+
+    it('excludes gitignored directories (data/)', async () => {
+      const files = await walkRepositoryPaths(tmpDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths.every(p => !p.includes('data/'))).toBe(true);
+    });
+
+    it('excludes gitignored file patterns (*.log)', async () => {
+      const files = await walkRepositoryPaths(tmpDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths.every(p => !p.endsWith('.log'))).toBe(true);
+    });
+
+    it('excludes gitnexusignored directories (vendor/)', async () => {
+      const files = await walkRepositoryPaths(tmpDir);
+      const paths = files.map(f => f.path.replace(/\\/g, '/'));
+
+      expect(paths.every(p => !p.includes('vendor/'))).toBe(true);
+    });
+  });
+
+  // ── Parsing ─────────────────────────────────────────────────────────
+
+  describe('parsing (processParsing)', () => {
+    it('parses TypeScript files into graph nodes and skips Swift gracefully', async () => {
+      // Phase 1: discover files
+      const scannedFiles = await walkRepositoryPaths(tmpDir);
+      const relativePaths = scannedFiles.map(f => f.path);
+
+      // Phase 2: read contents
+      const contentMap = await readFileContents(tmpDir, relativePaths);
+      const files = Array.from(contentMap.entries()).map(([p, content]) => ({
+        path: p,
+        content,
+      }));
+
+      // Phase 3: parse (sequential — no worker pool)
+      const graph = createKnowledgeGraph();
+      const symbolTable = createSymbolTable();
+      const astCache = createASTCache();
+
+      // Should NOT throw even if Swift grammar is unavailable
+      await processParsing(graph, files, symbolTable, astCache);
+
+      // TypeScript files should produce Function nodes
+      const nodes = graph.nodes;
+      const functionNodes = nodes.filter(n => n.label === 'Function');
+      const functionNames = functionNodes.map(n => n.properties.name);
+
+      expect(functionNames).toContain('main');
+      expect(functionNames).toContain('greet');
+
+      // Function nodes should reference the correct source files
+      const fnFilePaths = functionNodes.map(n =>
+        (n.properties.filePath as string).replace(/\\/g, '/'),
+      );
+      expect(fnFilePaths.some(p => p.includes('index.ts'))).toBe(true);
+      expect(fnFilePaths.some(p => p.includes('greet.ts'))).toBe(true);
+
+      // Swift behavior depends on grammar availability
+      if (!isLanguageAvailable(SupportedLanguages.Swift)) {
+        // No Swift-sourced nodes should appear in the graph
+        const swiftNodes = nodes.filter(n =>
+          (n.properties.filePath as string | undefined)?.endsWith('.swift'),
+        );
+        expect(swiftNodes).toHaveLength(0);
+      }
+      // If Swift IS available, Swift nodes may appear — that's fine
+    });
+  });
+});
diff --git a/gitnexus/test/integration/lbug-core-adapter.test.ts b/gitnexus/test/integration/lbug-core-adapter.test.ts
index 4b6a5bd23..c93ea0d83 100644
--- a/gitnexus/test/integration/lbug-core-adapter.test.ts
+++ b/gitnexus/test/integration/lbug-core-adapter.test.ts
@@ -5,9 +5,8 @@
  *
  * IMPORTANT: All core adapter tests share ONE coreHandle and ONE coreInitLbug
  * call because the core adapter is a module-level singleton. Calling
- * coreInitLbug with a different path would close the previous native DB
- * handle, which segfaults in forked processes. Sharing a single handle
- * avoids this entirely.
+ * coreInitLbug with a different path closes the previous native DB handle
+ * and opens a new one — sharing a single handle avoids unnecessary churn.
  */
 import { describe, it, expect } from 'vitest';
 import fs from 'fs/promises';
diff --git a/gitnexus/test/integration/lbug-pool-stability.test.ts b/gitnexus/test/integration/lbug-pool-stability.test.ts
new file mode 100644
index 000000000..81b04af4b
--- /dev/null
+++ b/gitnexus/test/integration/lbug-pool-stability.test.ts
@@ -0,0 +1,160 @@
+/**
+ * Integration Tests: LadybugDB Connection Pool — Parallel Stability
+ *
+ * Tests concurrency fixes from PR #349:
+ *   - Pre-warmed pool handles max parallel queries
+ *   - Waiter queue drains under overload
+ *   - Concurrent initLbug deduplication
+ *   - stdout.write restoration after parallel operations
+ *   - No connection leaks over sequential workloads
+ *   - Atomic pool entry visibility (pool.set last)
+ *   - Mixed query types at full concurrency
+ *
+ * Connection budget: LadybugDB's native mmap budget caps at ~56
+ * simultaneous Connection objects per process.  Tests that only need
+ * a ready pool share a single 'shared-repo' init (8 connections) to
+ * stay well under the limit.
+ */
+import { it, expect, afterAll } from 'vitest';
+import {
+  initLbug,
+  executeQuery,
+  executeParameterized,
+  closeLbug,
+  isLbugReady,
+} from '../../src/mcp/core/lbug-adapter.js';
+import { withTestLbugDB } from '../helpers/test-indexed-db.js';
+
+const SEED_DATA = [
+  `CREATE (f:File {id: 'file:index.ts', name: 'index.ts', filePath: 'src/index.ts', content: ''})`,
+  `CREATE (fn:Function {id: 'func:main', name: 'main', filePath: 'src/index.ts', startLine: 1, endLine: 10, isExported: true, content: '', description: ''})`,
+  `CREATE (fn2:Function {id: 'func:helper', name: 'helper', filePath: 'src/utils.ts', startLine: 1, endLine: 5, isExported: true, content: '', description: ''})`,
+  `MATCH (a:Function), (b:Function)
+    WHERE a.id = 'func:main' AND b.id = 'func:helper'
+    CREATE (a)-[:CodeRelation {type: 'CALLS', confidence: 1.0, reason: 'direct', step: 0}]->(b)`,
+];
+
+// ─── Shared-pool tests: reuse one init across 5 tests (8 connections total) ──
+
+withTestLbugDB('pool-stability', (handle) => {
+  const REPO = 'shared-par';
+  let inited = false;
+
+  const ensurePool = async () => {
+    if (!inited) {
+      await initLbug(REPO, handle.dbPath);
+      inited = true;
+    }
+  };
+
+  afterAll(async () => {
+    try { await closeLbug(REPO); } catch { /* best-effort */ }
+  });
+
+  it('8 simultaneous queries complete without crashes', async () => {
+    await ensurePool();
+    const queries = Array.from({ length: 8 }, () =>
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name')
+    );
+    const results = await Promise.all(queries);
+    expect(results).toHaveLength(8);
+    for (const rows of results) {
+      expect(rows.length).toBeGreaterThanOrEqual(2);
+    }
+  });
+
+  it('12 parallel queries overflow into waiter queue and all complete', async () => {
+    await ensurePool();
+    const queries = Array.from({ length: 12 }, () =>
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name')
+    );
+    const results = await Promise.all(queries);
+    expect(results).toHaveLength(12);
+    for (const rows of results) {
+      expect(rows.length).toBeGreaterThanOrEqual(2);
+    }
+  });
+
+  it('process.stdout.write is functional after init and parallel queries', async () => {
+    await ensurePool();
+    const queries = Array.from({ length: 8 }, () =>
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name')
+    );
+    await Promise.all(queries);
+    // stdout.write should be the real function, not the silenced no-op
+    expect(typeof process.stdout.write).toBe('function');
+  });
+
+  it('50 sequential queries do not leak connections', async () => {
+    await ensurePool();
+    for (let i = 0; i < 50; i++) {
+      await executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name');
+    }
+    // If connections leaked, these 8 parallel queries would exhaust the pool
+    const queries = Array.from({ length: 8 }, () =>
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name')
+    );
+    const results = await Promise.all(queries);
+    expect(results).toHaveLength(8);
+  });
+
+  it('mixed executeQuery + executeParameterized at full concurrency', async () => {
+    await ensurePool();
+    const queries = [
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name'),
+      executeParameterized(REPO, 'MATCH (n:Function) WHERE n.name = $name RETURN n.name AS name', { name: 'main' }),
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name'),
+      executeParameterized(REPO, 'MATCH (n:Function) WHERE n.name = $name RETURN n.name AS name', { name: 'helper' }),
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name'),
+      executeParameterized(REPO, 'MATCH (n:Function) WHERE n.name = $name RETURN n.name AS name', { name: 'main' }),
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name'),
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name'),
+    ];
+    const results = await Promise.all(queries);
+    expect(results).toHaveLength(8);
+  });
+
+  // ─── Regression tests for #308 / #314 / #347 ──────────────────────────
+  // The impact command's enrichment phase runs 3 concurrent queries via
+  // Promise.all (local-backend.ts:1415). Before PR #349's pool pre-warming,
+  // this triggered lazy createConnection → silenceStdout → SIGSEGV.
+
+  it('3 concurrent queries via Promise.all (impact enrichment pattern, #308/#314/#347)', async () => {
+    await ensurePool();
+    // Mirrors the exact Promise.all pattern from local-backend.ts:1415
+    // that caused SIGSEGV in issues #308, #314, #347 before pool pre-warming.
+    const [r1, r2, r3] = await Promise.all([
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.name AS name LIMIT 5').catch(() => []),
+      executeQuery(REPO, 'MATCH (n:Function) RETURN n.id AS id LIMIT 5').catch(() => []),
+      executeQuery(REPO, 'MATCH ()-[r:CodeRelation]->() RETURN r.type AS type LIMIT 5').catch(() => []),
+    ]);
+    expect(r1.length).toBeGreaterThanOrEqual(1);
+    expect(r2.length).toBeGreaterThanOrEqual(1);
+    expect(r3.length).toBeGreaterThanOrEqual(1);
+  });
+
+  // ─── Fresh-state tests: need their own init ──────────────────────────
+
+  it('concurrent initLbug calls for the same repoId deduplicate', async () => {
+    const promises = Array.from({ length: 6 }, () =>
+      initLbug('dedup-repo', handle.dbPath)
+    );
+    await Promise.all(promises);
+    expect(isLbugReady('dedup-repo')).toBe(true);
+    const rows = await executeQuery('dedup-repo', 'MATCH (n:Function) RETURN n.name AS name');
+    expect(rows.length).toBeGreaterThanOrEqual(2);
+    await closeLbug('dedup-repo');
+  });
+
+  it('pool entry is not visible until initLbug fully resolves', async () => {
+    const initPromise = initLbug('atomic-repo', handle.dbPath);
+    // Synchronously, pool should NOT be ready (pool.set is the last operation)
+    expect(isLbugReady('atomic-repo')).toBe(false);
+    await initPromise;
+    expect(isLbugReady('atomic-repo')).toBe(true);
+    await closeLbug('atomic-repo');
+  });
+}, {
+  seed: SEED_DATA,
+  poolAdapter: true,
+});
diff --git a/gitnexus/test/integration/local-backend-calltool.test.ts b/gitnexus/test/integration/local-backend-calltool.test.ts
index e0b61bb62..dd8992387 100644
--- a/gitnexus/test/integration/local-backend-calltool.test.ts
+++ b/gitnexus/test/integration/local-backend-calltool.test.ts
@@ -106,6 +106,59 @@ withTestLbugDB('local-backend-calltool', (handle) => {
     });
   });
 
+  describe('impact tool relationTypes filtering', () => {
+    let backend: LocalBackend;
+
+    beforeAll(async () => {
+      const ext = handle as typeof handle & { _backend?: LocalBackend };
+      if (!ext._backend) {
+        throw new Error('LocalBackend not initialized — afterSetup did not attach _backend to handle');
+      }
+      backend = ext._backend;
+    });
+
+    it('filters by HAS_METHOD only', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'AuthService',
+        direction: 'downstream',
+        relationTypes: ['HAS_METHOD'],
+      });
+      expect(result).not.toHaveProperty('error');
+      expect(result.impactedCount).toBeGreaterThanOrEqual(1);
+      const d1 = result.byDepth[1] || result.byDepth['1'] || [];
+      const names = d1.map((d: any) => d.name);
+      expect(names).toContain('authenticate');
+      // Should NOT include CALLS-reachable symbols like validate/hash
+      expect(names).not.toContain('validate');
+      expect(names).not.toContain('hash');
+    });
+
+    it('filters by OVERRIDES only', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'authenticate',
+        direction: 'downstream',
+        relationTypes: ['OVERRIDES'],
+      });
+      expect(result).not.toHaveProperty('error');
+      // AuthService.authenticate overrides BaseService.authenticate
+      expect(result.impactedCount).toBeGreaterThanOrEqual(1);
+      const d1 = result.byDepth[1] || result.byDepth['1'] || [];
+      const names = d1.map((d: any) => d.name);
+      expect(names).toContain('authenticate');
+    });
+
+    it('does not return HAS_METHOD results when filtering by CALLS only', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'AuthService',
+        direction: 'downstream',
+        relationTypes: ['CALLS'],
+      });
+      expect(result).not.toHaveProperty('error');
+      // AuthService has no outgoing CALLS edges, only HAS_METHOD
+      expect(result.impactedCount).toBe(0);
+    });
+  });
+
   describe('tool parameter edge cases', () => {
     let backend: LocalBackend;
 
@@ -144,6 +197,54 @@ withTestLbugDB('local-backend-calltool', (handle) => {
       expect(result).toHaveProperty('error');
       expect(result.error).toMatch(/required/i);
     });
+
+    // ─── impact error handling tests (#321) ───────────────────────────
+    // Verify that impact() returns structured JSON instead of crashing
+
+    it('impact tool returns structured error for unknown symbol', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'nonexistent_symbol_xyz_999',
+        direction: 'upstream',
+      });
+      // Must return structured JSON, not throw
+      expect(result).toBeDefined();
+      // Should have either an error field (not found) or impactedCount 0
+      // Either outcome is valid — the key is it doesn't crash
+      if (result.error) {
+        expect(typeof result.error).toBe('string');
+      } else {
+        expect(result.impactedCount).toBe(0);
+      }
+    });
+
+    it('impact error response has consistent target shape', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'nonexistent_symbol_xyz_999',
+        direction: 'downstream',
+      });
+      // When an error is returned, target must be an object (not raw string)
+      // so downstream API consumers can safely access result.target.name
+      if (result.error && result.target !== undefined) {
+        expect(typeof result.target).toBe('object');
+        expect(result.target).not.toBeNull();
+      }
+    });
+
+    it('impact partial results: traversalComplete flag when depth fails', async () => {
+      // Even if traversal fails at some depth, partial results should be returned
+      // and partial:true should only be set when some results were collected
+      const result = await backend.callTool('impact', {
+        target: 'validate',
+        direction: 'upstream',
+        maxDepth: 10, // Large depth to trigger multi-level traversal
+      });
+      // Should succeed (validate exists in seed data)
+      expect(result).not.toHaveProperty('error');
+      if (result.partial) {
+        // If partial, must still have some results
+        expect(result.impactedCount).toBeGreaterThan(0);
+      }
+    });
   });
 
 }, {
diff --git a/gitnexus/test/integration/local-backend.test.ts b/gitnexus/test/integration/local-backend.test.ts
index 21f18070e..23c233e63 100644
--- a/gitnexus/test/integration/local-backend.test.ts
+++ b/gitnexus/test/integration/local-backend.test.ts
@@ -15,14 +15,12 @@
  */
 import { describe, it, expect } from 'vitest';
 import {
+  CYPHER_WRITE_RE,
   executeQuery,
   executeParameterized,
-} from '../../src/mcp/core/lbug-adapter.js';
-import {
-  CYPHER_WRITE_RE,
-  VALID_RELATION_TYPES,
   isWriteQuery,
-} from '../../src/mcp/local/local-backend.js';
+} from '../../src/mcp/core/lbug-adapter.js';
+import { VALID_RELATION_TYPES } from '../../src/mcp/local/local-backend.js';
 import { withTestLbugDB } from '../helpers/test-indexed-db.js';
 import { LOCAL_BACKEND_SEED_DATA } from '../fixtures/local-backend-seed.js';
 
@@ -76,7 +74,7 @@ withTestLbugDB('local-backend', (handle) => {
 
   describe('relation type filtering', () => {
     it('only allows valid relation types in queries', () => {
-      const validTypes = ['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS'];
+      const validTypes = ['CALLS', 'IMPORTS', 'EXTENDS', 'IMPLEMENTS', 'HAS_METHOD', 'OVERRIDES', 'ACCESSES'];
       const invalidTypes = ['CONTAINS', 'STEP_IN_PROCESS', 'MEMBER_OF', 'DROP_TABLE'];
 
       for (const t of validTypes) {
diff --git a/gitnexus/test/integration/parsing.test.ts b/gitnexus/test/integration/parsing.test.ts
index e918e181f..908c3349b 100644
--- a/gitnexus/test/integration/parsing.test.ts
+++ b/gitnexus/test/integration/parsing.test.ts
@@ -10,7 +10,7 @@ import { describe, it, expect, beforeAll } from 'vitest';
 import fs from 'fs/promises';
 import path from 'path';
 import { createKnowledgeGraph } from '../../src/core/graph/graph.js';
-import { isNodeExported } from '../../src/core/ingestion/parsing-processor.js';
+import { isNodeExported } from '../../src/core/ingestion/export-detection.js';
 import { loadParser, loadLanguage } from '../../src/core/tree-sitter/parser-loader.js';
 import { getLanguageFromFilename } from '../../src/core/ingestion/utils.js';
 import { SupportedLanguages } from '../../src/config/supported-languages.js';
diff --git a/gitnexus/test/integration/resolvers/cpp.test.ts b/gitnexus/test/integration/resolvers/cpp.test.ts
index 09e5ed50b..4bdf84b56 100644
--- a/gitnexus/test/integration/resolvers/cpp.test.ts
+++ b/gitnexus/test/integration/resolvers/cpp.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, getNodesByLabelFull, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -49,9 +49,12 @@ describe('C++ diamond inheritance', () => {
     ]);
   });
 
-  it('captures 1 Method node from duck.cpp (speak)', () => {
+  it('captures speak as Method nodes (declaration in headers + definition in .cpp)', () => {
     const methods = getNodesByLabel(result, 'Method');
-    expect(methods).toEqual(['speak']);
+    expect(methods).toContain('speak');
+    // speak appears in animal.h (virtual declaration), duck.h (override declaration),
+    // and duck.cpp (out-of-line definition) — all captured as Method nodes
+    expect(methods.filter(m => m === 'speak').length).toBeGreaterThanOrEqual(1);
   });
 
   it('no OVERRIDES edges target Property nodes', () => {
@@ -446,10 +449,10 @@ describe('C++ scoped brace-init resolution (ns::Type{})', () => {
 });
 
 // ---------------------------------------------------------------------------
-// Range-for with explicit type: for (User& user : users) { user.save(); }
+// C++ range-based for: for (auto& user : users) — Tier 1c
 // ---------------------------------------------------------------------------
 
-describe('C++ range-for explicit type resolution', () => {
+describe('C++ range-based for loop resolution', () => {
   let result: PipelineResult;
 
   beforeAll(async () => {
@@ -459,22 +462,33 @@ describe('C++ range-for explicit type resolution', () => {
     );
   }, 60000);
 
-  it('detects User class and save method', () => {
+  it('detects User and Repo classes with save methods', () => {
     expect(getNodesByLabel(result, 'Class')).toContain('User');
-    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
   });
 
-  it('resolves user.save() inside range-for to User.save via explicit type', () => {
+  it('resolves user.save() in range-for to User#save', () => {
     const calls = getRelationships(result, 'CALLS');
-    const saveCall = calls.find(c => c.target === 'save' && c.targetFilePath === 'user.h');
-    expect(saveCall).toBeDefined();
-    expect(saveCall!.source).toBe('processUsers');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
   });
 
-  it('emits HAS_METHOD edge from User to save', () => {
-    const hasMethod = getRelationships(result, 'HAS_METHOD');
-    const edge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
-    expect(edge).toBeDefined();
+  it('resolves repo.save() in const auto& range-for to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
   });
 });
 
@@ -555,3 +569,638 @@ describe('C++ return-type inference via function return type', () => {
     expect(saveCall).toBeDefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Nullable receiver unwrapping: User* pointer type stripped for resolution
+// ---------------------------------------------------------------------------
+
+describe('C++ nullable receiver resolution (pointer types)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter((m: string) => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user->save() to User#save via pointer receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.h'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo->save() to Repo#save via pointer receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('Repo.h'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-contaminate (exactly 1 save per receiver file)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'processEntities');
+    const userTargeted = saveCalls.filter(c => c.targetFilePath.includes('User.h'));
+    const repoTargeted = saveCalls.filter(c => c.targetFilePath.includes('Repo.h'));
+    expect(userTargeted.length).toBe(1);
+    expect(repoTargeted.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C++ assignment chain propagation: auto alias = u; alias.save()
+// Tests extractPendingAssignment for C++ auto declarations.
+// ---------------------------------------------------------------------------
+
+describe('C++ assignment chain propagation (auto alias)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via auto assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath?.includes('User.h'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves rAlias.save() to Repo#save via auto assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath?.includes('Repo.h'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('each alias resolves to its own class, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'processEntities');
+    const userTargeted = saveCalls.filter(c => c.targetFilePath?.includes('User.h'));
+    const repoTargeted = saveCalls.filter(c => c.targetFilePath?.includes('Repo.h'));
+    expect(userTargeted.length).toBe(1);
+    expect(repoTargeted.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.getUser().save()
+// Tests that C++ chain call resolution correctly infers the intermediate
+// receiver type from getUser()'s return type and resolves save() to User.
+// ---------------------------------------------------------------------------
+
+describe('C++ chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects getUser and save symbols', () => {
+    const allSymbols = [
+      ...getNodesByLabel(result, 'Function'),
+      ...getNodesByLabel(result, 'Method'),
+    ];
+    expect(allSymbols).toContain('getUser');
+    expect(allSymbols).toContain('save');
+  });
+
+  it('resolves svc.getUser().save() to User#save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('user.h'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.getUser().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('repo.h'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C++ structured binding in range-for: for (auto& [key, user] : userMap)
+// ---------------------------------------------------------------------------
+
+describe('C++ structured binding in range-for', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-structured-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() in structured binding for-loop to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUserMap' && c.targetFilePath?.includes('User.h'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in structured binding for-loop to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepoMap' && c.targetFilePath?.includes('Repo.h'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUserMap' && c.targetFilePath?.includes('Repo.h'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT cross-resolve repo.save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepoMap' && c.targetFilePath?.includes('User.h'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C++ pointer dereference in range-for: for (auto& user : *ptr)
+// ---------------------------------------------------------------------------
+
+describe('C++ pointer dereference in range-for', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-deref-range-for'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.save() in *usersPtr range-for to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in *reposPtr range-for to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (C++)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for C++ data member fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking fields to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+  });
+
+  it('resolves user.address.save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (C++)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, City, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'City', 'User']);
+  });
+
+  it('detects Property nodes for all typed fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('city');
+    expect(properties).toContain('zipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('City → zipCode');
+  });
+
+  it('resolves 2-level chain: user.address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processUser');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('models'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: user.address.city.getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processUser');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('models'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Pointer and reference member fields (Address* address; Address& ref_address;)
+// ---------------------------------------------------------------------------
+
+describe('C++ pointer/reference member field capture', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-pointer-ref-fields'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for pointer and reference member fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('ref_address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges for pointer/reference fields', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → ref_address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+  });
+});
+
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (C++)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const fieldNames = writes.map(e => e.target);
+    expect(fieldNames).toContain('name');
+    expect(fieldNames).toContain('address');
+    const sources = writes.map(e => e.source);
+    expect(sources).toContain('updateUser');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): auto user = getUser(); user.save()
+// ---------------------------------------------------------------------------
+
+describe('C++ call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save() to User#save via call-result binding with auto', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser'
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): getUser() → .address → .getCity() → .save()
+// ---------------------------------------------------------------------------
+
+describe('C++ method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.save() to City#save via method chain with auto', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processChain'
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('C++ grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.greet().save() to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('Greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.greet() to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('A.h'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Overload Disambiguation via Parameter Types ─────────────────
+
+describe('C++ overload disambiguation by parameter types', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-overload-param-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects lookup method with parameterTypes on graph node', () => {
+    const methods = getNodesByLabelFull(result, 'Method');
+    const lookupNodes = methods.filter(m => m.name === 'lookup');
+    expect(lookupNodes.length).toBe(1);
+    expect(lookupNodes[0].properties.parameterTypes).toEqual(['int']);
+  });
+
+  it('emits CALLS edge from run() → lookup() via overload disambiguation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const lookupCalls = calls.filter(c => c.source === 'run' && c.target === 'lookup');
+    // Both lookup(42) and lookup("alice") resolve to same nodeId → 1 CALLS edge
+    expect(lookupCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C++ smart pointer virtual dispatch via std::make_shared<T>()
+// ---------------------------------------------------------------------------
+
+describe('C++ smart pointer virtual dispatch via make_shared', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-smart-ptr-dispatch'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Dog and Animal classes', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('Animal');
+    expect(getNodesByLabel(result, 'Class')).toContain('Dog');
+  });
+
+  it('emits CALLS edge from process → speak', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const speakCall = calls.find(c => c.source === 'process' && c.target === 'speak');
+    expect(speakCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C++ default parameter arity resolution
+// ---------------------------------------------------------------------------
+
+describe('C++ default parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'cpp-default-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves greet("Alice") with 1 arg to greet with 2 params (1 default)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'process' && c.target === 'greet');
+    expect(greetCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation (via synthesized wildcard imports)
+// models/user.h declares User class with save() and get_name() methods
+// models/user_factory.h declares User get_user() free function
+// app/main.cpp includes user_factory.h, calls get_user().save()
+// → user is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('C++ cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'cpp-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and get_name methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('get_name');
+  });
+
+  it('detects get_user factory function and process consumer', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('get_user');
+    expect(getNodesByLabel(result, 'Function')).toContain('process');
+  });
+
+  it('emits IMPORTS edge from main.cpp to headers', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('main') && e.targetFilePath.includes('models'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves user.save() in process() to User#save via cross-file propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves user.get_name() in process() to User#get_name via cross-file propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'get_name' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and get_name to User (via header declarations)', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'get_name');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/csharp.test.ts b/gitnexus/test/integration/resolvers/csharp.test.ts
index 5c7abdc1f..ef048a780 100644
--- a/gitnexus/test/integration/resolvers/csharp.test.ts
+++ b/gitnexus/test/integration/resolvers/csharp.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, getNodesByLabelFull, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -387,6 +387,49 @@ describe('C# local definition shadows import', () => {
   });
 });
 
+// ---------------------------------------------------------------------------
+// For-each loop element typing: foreach (User user in users) user.Save()
+// C#: explicit type in foreach_statement binds loop variable
+// ---------------------------------------------------------------------------
+
+describe('C# foreach loop element type resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with Save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'Save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.Save() in foreach to User#Save (not Repo#Save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'Save' && c.targetFilePath === 'Models/User.cs');
+    expect(userSave).toBeDefined();
+    expect(userSave!.source).toBe('ProcessEntities');
+  });
+
+  it('resolves repo.Save() in foreach to Repo#Save (not User#Save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'Save' && c.targetFilePath === 'Models/Repo.cs');
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('ProcessEntities');
+  });
+
+  it('emits exactly 2 Save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'Save');
+    expect(saveCalls.length).toBe(2);
+  });
+});
+
 // ---------------------------------------------------------------------------
 // this.Save() resolves to enclosing class's own Save method
 // ---------------------------------------------------------------------------
@@ -719,3 +762,867 @@ describe('C# async await constructor binding resolution', () => {
     expect(wrongSave).toBeUndefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation (Phase 4.3)
+// ---------------------------------------------------------------------------
+
+describe('C# assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a Save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'Save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.Save() to User#Save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: alias.Save() must resolve to User#Save
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessEntities' && c.targetFilePath.includes('User.cs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.Save() does NOT resolve to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Negative: alias comes from User, so only one edge to User.cs
+    const wrongCall = calls.filter(c =>
+      c.target === 'Save' && c.source === 'ProcessEntities' && c.targetFilePath.includes('User.cs'),
+    );
+    expect(wrongCall.length).toBe(1);
+  });
+
+  it('resolves rAlias.Save() to Repo#Save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: rAlias.Save() must resolve to Repo#Save
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessEntities' && c.targetFilePath.includes('Repo.cs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('each alias resolves to its own class, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessEntities' && c.targetFilePath.includes('User.cs'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessEntities' && c.targetFilePath.includes('Repo.cs'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# mixed declarations: assignment chain + is-pattern in the same file.
+// Tests that the type guard in extractPendingAssignment correctly skips
+// is_pattern_expression nodes while still handling local_declaration_statement.
+// ---------------------------------------------------------------------------
+
+describe('C# assignment chain + is-pattern coexistence', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-mixed-decl-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a Save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'Save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.Save() to User#Save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessWithChain' && c.targetFilePath?.includes('User.cs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('assignment chain alias does NOT resolve to Repo#Save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessWithChain' && c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves u.Save() to User#Save via is-pattern binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const patternSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessWithPattern' && c.targetFilePath?.includes('User.cs'),
+    );
+    expect(patternSave).toBeDefined();
+  });
+
+  it('resolves alias.Save() to Repo#Save via Repo assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessRepoChain' && c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('Repo chain alias does NOT resolve to User#Save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessRepoChain' && c.targetFilePath?.includes('User.cs'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# is-pattern disambiguation: `if (obj is User user)` should bind user → User
+// and resolve user.Save() to User#Save, NOT Repo#Save.
+// Validates the Phase 5.2 is_pattern_expression extraction in extractDeclaration.
+// ---------------------------------------------------------------------------
+
+describe('C# is-pattern type binding disambiguation (Phase 5.2)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-is-pattern'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a Save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'Save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.Save() inside if (obj is User user) to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'Process' &&
+      c.targetFilePath?.includes('User.cs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.Save() to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'Process' &&
+      c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.GetUser().Save()
+// Tests that C# chain call resolution correctly infers the intermediate
+// receiver type from GetUser()'s return type and resolves Save() to User.
+// ---------------------------------------------------------------------------
+
+describe('C# chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects GetUser and Save methods', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('GetUser');
+    expect(methods).toContain('Save');
+  });
+
+  it('resolves svc.GetUser().Save() to User#Save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'ProcessUser' &&
+      c.targetFilePath?.includes('User.cs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.GetUser().Save() to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'ProcessUser' &&
+      c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# var foreach Tier 1c: foreach (var user in users) with List<User> param
+// ---------------------------------------------------------------------------
+
+describe('C# var foreach type resolution (Tier 1c)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-var-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with Save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('detects methods on both classes', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods.filter(m => m === 'Save').length).toBe(2);
+    expect(methods).toContain('ProcessUsers');
+    expect(methods).toContain('ProcessRepos');
+  });
+
+  it('resolves direct calls with explicit parameter types (u.Save, r.Save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const directUserSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'Direct' && c.targetFilePath?.includes('User.cs'),
+    );
+    const directRepoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'Direct' && c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(directUserSave).toBeDefined();
+    expect(directRepoSave).toBeDefined();
+  });
+
+  it('resolves user.Save() in var foreach to User#Save via Tier 1c', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessUsers' && c.targetFilePath?.includes('User.cs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.Save() in var foreach to Repo#Save via Tier 1c', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessRepos' && c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.Save() to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessUsers' && c.targetFilePath?.includes('Repo.cs'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# switch pattern: switch (obj) { case User user: user.Save(); }
+// ---------------------------------------------------------------------------
+
+describe('C# switch pattern type resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-switch-pattern'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.Save() via is-pattern to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'Save' && c.targetFilePath === 'Models/User.cs');
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.Save() via switch case pattern to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'Save' && c.targetFilePath === 'Models/Repo.cs');
+    expect(repoSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# Dictionary .Values foreach — member_access_expression resolution
+// ---------------------------------------------------------------------------
+
+describe('C# Dictionary .Values foreach resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-dictionary-keys-values'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with Save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.Save() via Dictionary.Values to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessValues' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.Save() to Repo#Save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessValues' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# recursive_pattern: obj is User { Name: "Alice" } u — Phase 6.1
+// ---------------------------------------------------------------------------
+
+describe('C# recursive_pattern type resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-recursive-pattern'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with Save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves u.Save() via recursive_pattern is-expression to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves r.Save() via recursive_pattern switch expression to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('resolves exactly one Save call per target class (no cross-resolution)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'Save' && c.source === 'ProcessWithRecursivePattern');
+    const toUser = saveCalls.filter(c => c.targetFilePath?.includes('User'));
+    const toRepo = saveCalls.filter(c => c.targetFilePath?.includes('Repo'));
+    // u.Save() → User#Save only, r.Save() → Repo#Save only
+    expect(toUser.length).toBe(1);
+    expect(toRepo.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# nested member access with container property: this.data.Values
+// ---------------------------------------------------------------------------
+
+describe('C# nested member access foreach (this.data.Values)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-nested-member-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with Save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.Save() via this.data.Values to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessValues' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.Save() to Repo#Save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessValues' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (C#)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, Service, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'Service', 'User']);
+  });
+
+  it('detects Property nodes for C# properties', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('Address');
+    expect(properties).toContain('Name');
+    expect(properties).toContain('City');
+  });
+
+  it('emits HAS_PROPERTY edges linking properties to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → Address');
+    expect(edgeSet(propEdges)).toContain('User → Name');
+    expect(edgeSet(propEdges)).toContain('Address → City');
+  });
+
+  it('resolves user.Address.Save() → Address#Save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'Save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'ProcessUser' && e.targetFilePath.includes('Models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (C#)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, City, Service, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'City', 'Service', 'User']);
+  });
+
+  it('detects Property nodes for C# properties', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('Address');
+    expect(properties).toContain('City');
+    expect(properties).toContain('ZipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → Address');
+    expect(edgeSet(propEdges)).toContain('Address → City');
+    expect(edgeSet(propEdges)).toContain('City → ZipCode');
+  });
+
+  it('resolves 2-level chain: user.Address.Save() → Address#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'Save' && e.source === 'ProcessUser');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('Models'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: user.Address.City.GetName() → City#GetName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'GetName' && e.source === 'ProcessUser');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('Models'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (C#)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const fieldNames = writes.map(e => e.target);
+    expect(fieldNames).toContain('Name');
+    expect(fieldNames).toContain('Address');
+    const sources = writes.map(e => e.source);
+    expect(sources).toContain('UpdateUser');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): var user = GetUser(); user.Save()
+// ---------------------------------------------------------------------------
+
+describe('C# call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.Save() to User#Save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessUser' && c.targetFilePath.includes('App')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): GetUser() → .Address → .GetCity() → .Save()
+// ---------------------------------------------------------------------------
+
+describe('C# method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.Save() to City#Save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessChain' && c.targetFilePath.includes('App')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// Greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('C# grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.Greet().Save() to Greeting#Save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.targetFilePath.includes('Greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.Greet() to A#Greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'Greet' && c.targetFilePath.includes('A.cs'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase C: C# null-check narrowing — if (x != null) and if (x is not null)
+// Both patterns emit patternOverrides for the if-body position range
+// ---------------------------------------------------------------------------
+
+describe('C# null-check narrowing resolution (Phase C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-null-check-narrowing'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves x.Save() inside != null guard (ProcessInequality) to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessInequality' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves x.Save() inside is not null guard (ProcessIsNotNull) to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessIsNotNull' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('does NOT cross-resolve to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'Save' && c.targetFilePath.includes('Repo'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves x.Save() inside constructor via null-check narrowing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'App' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves x.Save() inside lambda via null-check narrowing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'ProcessInLambda' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Overload Disambiguation via Parameter Types ─────────────────
+
+describe('C# overload disambiguation by parameter types', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-overload-param-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Lookup method with parameterTypes on graph node', () => {
+    const methods = getNodesByLabelFull(result, 'Method');
+    const lookupNodes = methods.filter(m => m.name === 'Lookup');
+    expect(lookupNodes.length).toBe(1);
+    expect(lookupNodes[0].properties.parameterTypes).toEqual(['int']);
+  });
+
+  it('emits CALLS edge from Run() → Lookup() via overload disambiguation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const lookupCalls = calls.filter(c => c.source === 'Run' && c.target === 'Lookup');
+    // Both Lookup(42) and Lookup("alice") resolve to same nodeId → 1 CALLS edge
+    expect(lookupCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# optional parameter arity resolution
+// ---------------------------------------------------------------------------
+
+describe('C# optional parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-optional-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves g.Greet("Alice") with 1 arg to Greet with 2 params (1 optional)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'Main' && c.target === 'Greet');
+    expect(greetCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// Models/UserFactory.cs exports static GetUser() returning User
+// App/Program.cs uses static import, calls var u = GetUser(); u.Save()
+// → u is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('C# cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'csharp-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with Save and GetName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('Save');
+    expect(getNodesByLabel(result, 'Method')).toContain('GetName');
+  });
+
+  it('detects UserFactory class with GetUser method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('UserFactory');
+    expect(getNodesByLabel(result, 'Method')).toContain('GetUser');
+  });
+
+  it('detects Program class with Run method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('Program');
+    expect(getNodesByLabel(result, 'Method')).toContain('Run');
+  });
+
+  it('emits IMPORTS edge from Program.cs to UserFactory.cs', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('Program') && e.targetFilePath.includes('UserFactory'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves u.Save() in Run() to User#Save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'Run' &&
+      c.targetFilePath.includes('User.cs'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves u.GetName() in Run() to User#GetName via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'GetName' &&
+      c.source === 'Run' &&
+      c.targetFilePath.includes('User.cs'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking Save and GetName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'Save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'GetName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// C# fallback without .csproj (P1-4 fix)
+// When no .csproj file is found, import resolution should fall back to
+// suffix-based matching rather than returning null.
+// ---------------------------------------------------------------------------
+
+describe('C# import resolution without .csproj (suffix fallback)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'csharp-no-csproj'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with Save and GetName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('Save');
+  });
+
+  it('detects UserService class with ProcessUser method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('UserService');
+    expect(getNodesByLabel(result, 'Method')).toContain('ProcessUser');
+  });
+
+  // C# 'using Models;' is a namespace import — suffix matching cannot resolve
+  // namespace-to-directory mappings without .csproj. The fallback prevents a null
+  // return (so other resolution paths can attempt it), but namespace imports
+  // inherently require project config for file discovery.
+  it('does not crash on namespace import without .csproj (graceful fallback)', () => {
+    // Pipeline completes without errors and detects symbols from both files,
+    // even though no IMPORTS edge is created for the namespace import.
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('UserService');
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/go.test.ts b/gitnexus/test/integration/resolvers/go.test.ts
index f2be3460c..6a464e9a6 100644
--- a/gitnexus/test/integration/resolvers/go.test.ts
+++ b/gitnexus/test/integration/resolvers/go.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -658,3 +658,622 @@ describe('Go multi-return factory type inference', () => {
     expect(wrongSave).toBeUndefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Nullable receiver: var user *models.User = findUser(); user.Save()
+// Go pointer types (*User) — extractSimpleTypeName strips pointer prefix.
+// ---------------------------------------------------------------------------
+
+describe('Go nullable receiver resolution (pointer types)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs, both with Save methods', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'Save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.Save() to User.Save via pointer receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'Save' && c.targetFilePath === 'models/user.go');
+    expect(userSave).toBeDefined();
+    expect(userSave!.source).toBe('processEntities');
+  });
+
+  it('resolves repo.Save() to Repo.Save via pointer receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'Save' && c.targetFilePath === 'models/repo.go');
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('processEntities');
+  });
+
+  it('user.Save() does NOT resolve to Repo.Save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'Save' && c.source === 'processEntities');
+    expect(saveCalls.filter(c => c.targetFilePath === 'models/user.go').length).toBe(1);
+    expect(saveCalls.filter(c => c.targetFilePath === 'models/repo.go').length).toBe(1);
+  });
+
+  it('emits exactly 2 Save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'Save');
+    expect(saveCalls.length).toBe(2);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation (Phase 4.3)
+// ---------------------------------------------------------------------------
+
+describe('Go assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs each with a Save method', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'Save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.Save() to User#Save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: alias.Save() must resolve to User#Save
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processEntities' && c.targetFilePath.includes('user.go'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.Save() does NOT resolve to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Negative: alias comes from User, so only one edge to user.go
+    const wrongCall = calls.filter(c =>
+      c.target === 'Save' && c.source === 'processEntities' && c.targetFilePath.includes('user.go'),
+    );
+    expect(wrongCall.length).toBe(1);
+  });
+
+  it('resolves rAlias.Save() to Repo#Save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: rAlias.Save() must resolve to Repo#Save
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processEntities' && c.targetFilePath.includes('repo.go'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('each alias resolves to its own struct, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processEntities' && c.targetFilePath.includes('user.go'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processEntities' && c.targetFilePath.includes('repo.go'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+
+  // --- var form assignment chain ---
+
+  it('resolves var alias.Save() to User via var assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processWithVar' && c.targetFilePath.includes('user.go'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves var rAlias.Save() to Repo via var assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processWithVar' && c.targetFilePath.includes('repo.go'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('var alias.Save() does NOT resolve to Repo (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSaves = calls.filter(c =>
+      c.target === 'Save' && c.source === 'processWithVar' && c.targetFilePath.includes('user.go'),
+    );
+    expect(userSaves.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.GetUser().Save()
+// Tests that Go chain call resolution correctly infers the intermediate
+// receiver type from GetUser()'s return type and resolves Save() to User.
+// ---------------------------------------------------------------------------
+
+describe('Go chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo structs and UserService', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    expect(getNodesByLabel(result, 'Struct')).toContain('UserService');
+  });
+
+  it('detects GetUser and Save symbols', () => {
+    const allSymbols = [...getNodesByLabel(result, 'Function'), ...getNodesByLabel(result, 'Method')];
+    expect(allSymbols).toContain('GetUser');
+    expect(allSymbols).toContain('Save');
+  });
+
+  it('resolves svc.GetUser().Save() to User#Save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('user.go'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.GetUser().Save() to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('repo.go'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Go map range: for _, user := range userMap where map[string]User
+// ---------------------------------------------------------------------------
+
+describe('Go map range type resolution (Tier 1c)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-map-range'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs with Save methods in separate files', () => {
+    const structs = getNodesByLabel(result, 'Struct');
+    expect(structs).toContain('User');
+    expect(structs).toContain('Repo');
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods.filter(m => m === 'Save').length).toBe(2);
+  });
+
+  it('resolves user.Save() in map range to User#Save via map_type value', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processMap' && c.targetFilePath?.includes('user.go'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.Save() to Repo#Save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processMap' && c.targetFilePath?.includes('repo.go'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Go for-loop with call_expression iterable: for _, user := range GetUsers()
+// Phase 7.3: call_expression iterable resolution via ReturnTypeLookup
+// ---------------------------------------------------------------------------
+
+describe('Go for-loop call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-for-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs with competing Save methods', () => {
+    const structs = getNodesByLabel(result, 'Struct');
+    expect(structs).toContain('User');
+    expect(structs).toContain('Repo');
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods.filter(m => m === 'Save').length).toBe(2);
+  });
+
+  it('resolves user.Save() in range GetUsers() to User#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processUsers' && c.targetFilePath?.includes('user.go'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.Save() in range GetRepos() to Repo#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processRepos' && c.targetFilePath?.includes('repo.go'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.Save() to Repo#Save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processUsers' && c.targetFilePath?.includes('repo.go'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT resolve repo.Save() to User#Save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'Save' && c.source === 'processRepos' && c.targetFilePath?.includes('user.go'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (Go)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects structs: Address, User', () => {
+    expect(getNodesByLabel(result, 'Struct')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for Go struct fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('Address');
+    expect(properties).toContain('Name');
+    expect(properties).toContain('City');
+  });
+
+  it('emits HAS_PROPERTY edges linking struct fields to structs', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → Name');
+    expect(edgeSet(propEdges)).toContain('User → Address');
+    expect(edgeSet(propEdges)).toContain('Address → City');
+  });
+
+  it('resolves user.Address.Save() → Address#Save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'Save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (Go)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects structs: Address, City, User', () => {
+    expect(getNodesByLabel(result, 'Struct')).toEqual(['Address', 'City', 'User']);
+  });
+
+  it('detects Property nodes for Go struct fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('Address');
+    expect(properties).toContain('City');
+    expect(properties).toContain('ZipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(5);
+    expect(edgeSet(propEdges)).toContain('User → Name');
+    expect(edgeSet(propEdges)).toContain('User → Address');
+    expect(edgeSet(propEdges)).toContain('Address → City');
+    expect(edgeSet(propEdges)).toContain('Address → Street');
+    expect(edgeSet(propEdges)).toContain('City → ZipCode');
+  });
+
+  it('resolves 2-level chain: user.Address.Save() → Address#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'Save' && e.source === 'processUser');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('models'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: user.Address.City.GetName() → City#GetName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'GetName' && e.source === 'processUser');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('models'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Mixed field+call chain resolution (Go)
+// ---------------------------------------------------------------------------
+
+describe('Mixed field+call chain resolution (Go)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-mixed-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects structs: Address, City, User, UserService', () => {
+    expect(getNodesByLabel(result, 'Struct')).toEqual(['Address', 'City', 'User', 'UserService']);
+  });
+
+  it('detects Property nodes for mixed-chain fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('City');
+    expect(properties).toContain('Address');
+  });
+
+  it('resolves call→field chain: svc.GetUser().Address.Save() → Address#Save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'Save' && e.source === 'processWithService');
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('models');
+  });
+
+  it('resolves field→call chain: user.GetAddress().City.GetName() → City#GetName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'GetName' && e.source === 'processWithUser');
+    expect(getNameCalls.length).toBe(1);
+    expect(getNameCalls[0].targetFilePath).toContain('models');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// ACCESSES write edges from assignment statements
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (Go)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const nameWrite = writes.find(e => e.target === 'Name');
+    const addressWrite = writes.find(e => e.target === 'Address');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('updateUser');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('updateUser');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): user := GetUser(); user.Save()
+// ---------------------------------------------------------------------------
+
+describe('Go call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.Save() to User#Save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'processUser' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): GetUser() → .Address → .GetCity() → .Save()
+// ---------------------------------------------------------------------------
+
+describe('Go method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.Save() to City#Save via 3-step chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' && c.source === 'processChain' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Go inc_statement / dec_statement write access
+// obj.Field++ and obj.Field-- emit ACCESSES write edges
+// ---------------------------------------------------------------------------
+
+describe('Go inc/dec write access tracking (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-inc-dec-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edge for Count++ in increment', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const countInc = writes.find(e => e.target === 'Count' && e.source === 'increment');
+    expect(countInc).toBeDefined();
+  });
+
+  it('emits ACCESSES write edge for Total++ in increment', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const totalInc = writes.find(e => e.target === 'Total' && e.source === 'increment');
+    expect(totalInc).toBeDefined();
+  });
+
+  it('emits ACCESSES write edge for Count-- in decrement', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const countDec = writes.find(e => e.target === 'Count' && e.source === 'decrement');
+    expect(countDec).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation (via synthesized wildcard imports)
+// models/user.go exports User struct with Save() and GetName() methods
+// models/factory.go exports GetUser() -> User
+// app/main.go imports models package, calls models.GetUser().Save()
+// → user is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('Go cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'go-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User struct with Save and GetName methods', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('Save');
+    expect(getNodesByLabel(result, 'Method')).toContain('GetName');
+  });
+
+  it('detects GetUser factory function', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('GetUser');
+  });
+
+  it('emits IMPORTS edge from main.go to models package files', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('main') && e.targetFilePath.includes('models'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves user.Save() in main() to User#Save via cross-file propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'Save' &&
+      c.source === 'main' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves user.GetName() in main() to User#GetName via cross-file propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'GetName' &&
+      c.source === 'main' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking Save and GetName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'Save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'GetName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Go cmd/ helper files should NOT get entry-point multiplier (P0-1 fix)
+// Only main.go files should get the 3.0 entry-point boost, not arbitrary
+// .go files under cmd/ subdirectories.
+// ---------------------------------------------------------------------------
+
+describe('Go cmd/ helper files entry-point scoring', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'go-cmd-helper'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects main function and Load function', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('main');
+    expect(getNodesByLabel(result, 'Function')).toContain('Load');
+  });
+
+  it('emits IMPORTS edge from main.go to config/config.go', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('main') && e.targetFilePath.includes('config'),
+    );
+    expect(edge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/helpers.ts b/gitnexus/test/integration/resolvers/helpers.ts
index 79e3116df..18dfceff1 100644
--- a/gitnexus/test/integration/resolvers/helpers.ts
+++ b/gitnexus/test/integration/resolvers/helpers.ts
@@ -3,10 +3,12 @@
  */
 import path from 'path';
 import { runPipelineFromRepo } from '../../../src/core/ingestion/pipeline.js';
+import type { PipelineOptions } from '../../../src/core/ingestion/pipeline.js';
 import type { PipelineResult } from '../../../src/types/pipeline.js';
 import type { GraphRelationship } from '../../../src/core/graph/types.js';
 
 export const FIXTURES = path.resolve(__dirname, '..', '..', 'fixtures', 'lang-resolution');
+export const CROSS_FILE_FIXTURES = path.resolve(__dirname, '..', '..', 'fixtures', 'cross-file-binding');
 
 export type RelEdge = {
   source: string;
@@ -50,5 +52,16 @@ export function edgeSet(edges: Array<{ source: string; target: string }>): strin
   return edges.map(e => `${e.source} → ${e.target}`).sort();
 }
 
+/** Get graph nodes by label with full properties (for parameterTypes assertions). */
+export function getNodesByLabelFull(result: PipelineResult, label: string): Array<{ name: string; properties: Record<string, any> }> {
+  const nodes: Array<{ name: string; properties: Record<string, any> }> = [];
+  result.graph.forEachNode(n => {
+    if (n.label === label) nodes.push({ name: n.properties.name, properties: n.properties });
+  });
+  return nodes.sort((a, b) => a.name.localeCompare(b.name));
+}
+
+// Tests can pass { skipGraphPhases: true } as third arg for faster runs
+// (skips MRO, community detection, and process extraction).
 export { runPipelineFromRepo };
-export type { PipelineResult };
+export type { PipelineOptions, PipelineResult };
diff --git a/gitnexus/test/integration/resolvers/java.test.ts b/gitnexus/test/integration/resolvers/java.test.ts
index 2b0fd622f..89a8d89fd 100644
--- a/gitnexus/test/integration/resolvers/java.test.ts
+++ b/gitnexus/test/integration/resolvers/java.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, getNodesByLabelFull, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -401,6 +401,49 @@ describe('Java constructor-inferred type resolution', () => {
   });
 });
 
+// ---------------------------------------------------------------------------
+// For-each loop element typing: for (User user : users) user.save()
+// Java: explicit type in enhanced_for_statement binds loop variable
+// ---------------------------------------------------------------------------
+
+describe('Java for-each loop element type resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() in for-each to User#save (not Repo#save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'save' && c.targetFilePath === 'models/User.java');
+    expect(userSave).toBeDefined();
+    expect(userSave!.source).toBe('processEntities');
+  });
+
+  it('resolves repo.save() in for-each to Repo#save (not User#save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'save' && c.targetFilePath === 'models/Repo.java');
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('processEntities');
+  });
+
+  it('emits exactly 2 save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    expect(saveCalls.length).toBe(2);
+  });
+});
+
 // ---------------------------------------------------------------------------
 // this.save() resolves to enclosing class's own save method
 // ---------------------------------------------------------------------------
@@ -565,3 +608,861 @@ describe('Java return type inference via explicit method return type', () => {
     expect(saveCall).toBeDefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Nullable receiver: Java uses explicit type annotations (User user = findUser())
+// Tests that regular typed receiver resolution works with competing save() methods
+// when the variable is assigned from a factory method returning the same type.
+// Note: Java Optional<User> stores just "Optional" in TypeEnv (generics stripped),
+// so this test uses plain typed variables to validate receiver disambiguation.
+// ---------------------------------------------------------------------------
+
+describe('Java nullable receiver resolution (typed factory return)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() to User.save via receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'save' && c.targetFilePath === 'models/User.java');
+    expect(userSave).toBeDefined();
+    expect(userSave!.source).toBe('processEntities');
+  });
+
+  it('resolves repo.save() to Repo.save via receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'save' && c.targetFilePath === 'models/Repo.java');
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('processEntities');
+  });
+
+  it('user.save() does NOT resolve to Repo.save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'processEntities');
+    // Each save() call should resolve to exactly one target file
+    expect(saveCalls.filter(c => c.targetFilePath === 'models/User.java').length).toBe(1);
+    expect(saveCalls.filter(c => c.targetFilePath === 'models/Repo.java').length).toBe(1);
+  });
+
+  it('emits exactly 2 save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    expect(saveCalls.length).toBe(2);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation (Phase 4.3)
+// ---------------------------------------------------------------------------
+
+describe('Java assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: alias.save() must resolve to User#save
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.java'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.save() does NOT resolve to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Negative: alias comes from User, so only one edge to User.java
+    const wrongCall = calls.filter(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.java'),
+    );
+    expect(wrongCall.length).toBe(1);
+  });
+
+  it('resolves rAlias.save() to Repo#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: rAlias.save() must resolve to Repo#save
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('Repo.java'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('each alias resolves to its own class, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.java'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('Repo.java'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Java Optional<User> receiver resolution — extractSimpleTypeName unwraps
+// Optional<User> to "User" via NULLABLE_WRAPPER_TYPES, enabling receiver
+// disambiguation when the declaration type is Optional<T>.
+// ---------------------------------------------------------------------------
+
+describe('Java Optional<User> receiver resolution via wrapper unwrapping', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-optional-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() to User#save with Optional<User> in scope', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath?.includes('User.java'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() to Repo#save alongside Optional usage', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath?.includes('Repo.java'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('disambiguates user.save() and repo.save() to different files', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath?.includes('User.java'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath?.includes('Repo.java'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method call resolution: svc.getUser().save()
+// The receiver of save() is a method_invocation (getUser()), not a simple identifier.
+// Resolution must walk the chain: getUser() returns User, so save() → User#save.
+// ---------------------------------------------------------------------------
+
+describe('Java chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects save methods on both User and Repo', () => {
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('detects getUser method on UserService', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('getUser');
+  });
+
+  it('resolves svc.getUser().save() to User#save, NOT Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('User.java'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('Repo.java'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Java 16+ instanceof pattern variable: `if (obj instanceof User user)`
+// Phase 5.2: extractPatternBinding on instanceof_expression binds user → User.
+// Disambiguation: User.save vs Repo.save — only User.save should be called.
+// ---------------------------------------------------------------------------
+
+describe('Java instanceof pattern variable resolution (Phase 5.2)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-instanceof-pattern'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() inside if (obj instanceof User user) to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('User.java'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('Repo.java'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Enum static method calls: Status.fromCode(200) should resolve via
+// class-as-receiver with Enum type included in the filter.
+// ---------------------------------------------------------------------------
+
+describe('Java enum static method call resolution (Phase 5 review fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-enum-static-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Status as an Enum and App as a Class', () => {
+    expect(getNodesByLabel(result, 'Enum')).toContain('Status');
+    expect(getNodesByLabel(result, 'Class')).toContain('App');
+  });
+
+  it('detects fromCode and label methods on Status', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('fromCode');
+    expect(methods).toContain('label');
+  });
+
+  it('resolves Status.fromCode(200) to Status#fromCode via class-as-receiver', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const fromCodeCall = calls.find(c =>
+      c.target === 'fromCode' &&
+      c.source === 'process' &&
+      c.targetFilePath?.includes('Status.java'),
+    );
+    expect(fromCodeCall).toBeDefined();
+  });
+
+  it('resolves s.label() to Status#label', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const labelCall = calls.find(c =>
+      c.target === 'label' &&
+      c.source === 'process' &&
+      c.targetFilePath?.includes('Status.java'),
+    );
+    expect(labelCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Java 21+ switch pattern matching: switch (obj) { case User user -> user.save(); }
+// ---------------------------------------------------------------------------
+
+describe('Java switch pattern binding', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-switch-pattern'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() in switch case User to models/User.java', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processAny' && c.targetFilePath === 'models/User.java',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in switch case Repo to models/Repo.java', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processAny' && c.targetFilePath === 'models/Repo.java',
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('resolves user.save() in handleUser switch case User to models/User.java', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'handleUser' && c.targetFilePath === 'models/User.java',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve handleUser switch case User to Repo.save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'handleUser' && c.targetFilePath === 'models/Repo.java',
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Java Map .values() for-loop — method-aware type arg resolution
+// ---------------------------------------------------------------------------
+
+describe('Java Map .values() for-loop resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-map-keys-values'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.save() via Map.values() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processValues' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processValues' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('resolves user.save() via List iteration to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processList' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Java enhanced for-loop with call_expression iterable: for (User user : getUsers())
+// Phase 7.3: call_expression iterable resolution via ReturnTypeLookup
+// ---------------------------------------------------------------------------
+
+describe('Java foreach call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-foreach-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.save() in foreach over User.getUsers() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User.java'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in foreach over Repo.getRepos() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo.java'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo.java'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT resolve repo.save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('User.java'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (Java)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, App, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'App', 'User']);
+  });
+
+  it('detects Property nodes for Java fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking properties to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+  });
+
+  it('resolves user.address.save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('Address'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+
+  it('emits ACCESSES read edge for user.address field access in chain', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const addressReads = accesses.filter(e => e.target === 'address' && e.rel.reason === 'read');
+    expect(addressReads.length).toBe(1);
+    expect(addressReads[0].source).toBe('processUser');
+    expect(addressReads[0].targetLabel).toBe('Property');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (Java)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, App, City, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'App', 'City', 'User']);
+  });
+
+  it('detects Property nodes for Java fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('city');
+    expect(properties).toContain('zipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('City → zipCode');
+  });
+
+  it('resolves 2-level chain: user.address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processUser');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('Address'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: user.address.city.getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processUser');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('City'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Mixed field+call chain resolution (Java)
+// ---------------------------------------------------------------------------
+
+describe('Mixed field+call chain resolution (Java)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-mixed-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, App, City, User, UserService', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'App', 'City', 'User', 'UserService']);
+  });
+
+  it('detects Property nodes for mixed-chain fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('city');
+    expect(properties).toContain('address');
+  });
+
+  it('resolves call→field chain: svc.getUser().address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processWithService');
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('Address');
+  });
+
+  it('resolves field→call chain: user.getAddress().city.getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processWithUser');
+    expect(getNameCalls.length).toBe(1);
+    expect(getNameCalls[0].targetFilePath).toContain('City');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (Java)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const nameWrite = writes.find(e => e.target === 'name');
+    const addressWrite = writes.find(e => e.target === 'address');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('updateUser');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('updateUser');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): var user = getUser(); user.save()
+// ---------------------------------------------------------------------------
+
+describe('Java call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save() to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath.includes('User')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): getUser() → .address → .getCity() → .save()
+// ---------------------------------------------------------------------------
+
+describe('Java method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.save() to City#save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processChain' && c.targetFilePath.includes('Models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('Java grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.greet().save() to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('Greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.greet() to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('A.java'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Overload Disambiguation via Parameter Types ─────────────────
+
+describe('Java overload disambiguation by parameter types', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-overload-param-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects lookup method with parameterTypes on graph node', () => {
+    const methods = getNodesByLabelFull(result, 'Method');
+    const lookupNodes = methods.filter(m => m.name === 'lookup');
+    // generateId collision → 1 graph node, first overload's parameterTypes wins
+    expect(lookupNodes.length).toBe(1);
+    // The node has parameterTypes from whichever overload was registered first
+    expect(lookupNodes[0].properties.parameterTypes).toEqual(['int']);
+  });
+
+  it('emits CALLS edge from run() → lookup() via overload disambiguation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const lookupCalls = calls.filter(c => c.source === 'run' && c.target === 'lookup');
+    // Phase 0 (fileIndex stores both overloads) + Phase 2 (literal type matching)
+    // enables resolution where previously 2 same-arity candidates → null.
+    // Both calls resolve to same nodeId (ID collision) → 1 CALLS edge after dedup.
+    expect(lookupCalls.length).toBe(1);
+  });
+});
+
+// ── Phase P: Virtual Dispatch via Constructor Type ───────────────────────
+
+describe('Java virtual dispatch via constructor type (same-file)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'java-virtual-dispatch'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Animal, Dog, and App classes in same file', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('Animal');
+    expect(classes).toContain('Dog');
+    expect(classes).toContain('App');
+  });
+
+  it('detects Dog extends Animal heritage', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    const dogExtends = extends_.find(e => e.source === 'Dog' && e.target === 'Animal');
+    expect(dogExtends).toBeDefined();
+  });
+
+  it('detects fetchBall() as Dog-only method', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('fetchBall');
+  });
+
+  it('resolves fetchBall() calls from run() — proves virtual dispatch override', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const fetchCalls = calls.filter(c => c.source === 'run' && c.target === 'fetchBall');
+    // animal.fetchBall() only resolves if constructorTypeMap overrides
+    // receiver from Animal → Dog (since only Dog has fetchBall).
+    // dog.fetchBall() resolves directly via Dog type.
+    // Both target same nodeId → 1 CALLS edge after dedup.
+    expect(fetchCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// models/UserFactory.java exports static getUser() returning User
+// app/App.java static-imports getUser, calls var user = getUser(); user.save()
+// → user is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('Java cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'java-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and getName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('getName');
+  });
+
+  it('detects UserFactory class with getUser method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('UserFactory');
+    expect(getNodesByLabel(result, 'Method')).toContain('getUser');
+  });
+
+  it('detects App class with run method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('App');
+    expect(getNodesByLabel(result, 'Method')).toContain('run');
+  });
+
+  it('emits IMPORTS edge from App.java to UserFactory.java', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('App') && e.targetFilePath.includes('UserFactory'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves user.save() in run() to User#save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('User.java'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves user.getName() in run() to User#getName via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'getName' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('User.java'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and getName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'getName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/javascript.test.ts b/gitnexus/test/integration/resolvers/javascript.test.ts
index 41be8a841..15f00d8c6 100644
--- a/gitnexus/test/integration/resolvers/javascript.test.ts
+++ b/gitnexus/test/integration/resolvers/javascript.test.ts
@@ -4,10 +4,43 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
+// ---------------------------------------------------------------------------
+// skipGraphPhases: verify pipeline works correctly when graph phases are skipped
+// ---------------------------------------------------------------------------
+
+describe('Pipeline skipGraphPhases option', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'javascript-self-this-resolution'),
+      () => {},
+      { skipGraphPhases: true },
+    );
+  }, 60000);
+
+  it('produces graph nodes without community/process phases', () => {
+    expect(getNodesByLabel(result, 'Class').length).toBeGreaterThan(0);
+  });
+
+  it('still resolves CALLS edges correctly', () => {
+    const calls = getRelationships(result, 'CALLS');
+    expect(calls.length).toBeGreaterThan(0);
+  });
+
+  it('omits communityResult when skipGraphPhases is true', () => {
+    expect(result.communityResult).toBeUndefined();
+  });
+
+  it('omits processResult when skipGraphPhases is true', () => {
+    expect(result.processResult).toBeUndefined();
+  });
+});
+
 // ---------------------------------------------------------------------------
 // this.save() resolves to enclosing class's own save method
 // ---------------------------------------------------------------------------
@@ -69,6 +102,52 @@ describe('JavaScript parent resolution', () => {
   });
 });
 
+// ---------------------------------------------------------------------------
+// Nullable receiver: JSDoc @param {User | null} strips nullable via TypeEnv
+// ---------------------------------------------------------------------------
+
+describe('JavaScript nullable receiver resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'js-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Repo', 'User']);
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() to src/user.js via nullable-stripped JSDoc type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'save' && c.source === 'processEntities' && c.targetFilePath === 'src/user.js');
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() to src/repo.js via nullable-stripped JSDoc type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'save' && c.source === 'processEntities' && c.targetFilePath === 'src/repo.js');
+    expect(repoSave).toBeDefined();
+  });
+
+  it('emits exactly 2 save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    expect(saveCalls.length).toBe(2);
+  });
+
+  it('each save() call resolves to a distinct file (no duplicates)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'processEntities');
+    const files = saveCalls.map(c => c.targetFilePath).sort();
+    expect(files).toEqual(['src/repo.js', 'src/user.js']);
+  });
+});
+
 // ---------------------------------------------------------------------------
 // super.save() resolves to parent class's save method
 // ---------------------------------------------------------------------------
@@ -105,3 +184,238 @@ describe('JavaScript super resolution', () => {
     expect(repoSave).toBeUndefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.getUser().save()
+// Tests that JavaScript chain call resolution correctly infers the intermediate
+// receiver type from getUser()'s JSDoc @returns {User} and resolves save().
+// ---------------------------------------------------------------------------
+
+describe('JavaScript chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'javascript-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, and UserService', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects getUser and save methods', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('getUser');
+    expect(methods).toContain('save');
+  });
+
+  it('resolves svc.getUser().save() to User#save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('user.js'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.getUser().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('repo.js'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution — class field_definition capture
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (JavaScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'js-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, Config, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'Config', 'User']);
+  });
+
+  it('detects Property nodes for JS class fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking fields to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(4);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('Config → DEFAULT');
+  });
+});
+
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (JavaScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'js-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const fieldNames = writes.map(e => e.target);
+    expect(fieldNames).toContain('name');
+    expect(fieldNames).toContain('address');
+    const sources = writes.map(e => e.source);
+    expect(sources).toContain('updateUser');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase A: JS object destructuring — const { field } = receiver → fieldAccess PendingAssignment
+// ---------------------------------------------------------------------------
+
+describe('JavaScript object destructuring resolution (Phase A)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'js-object-destructuring'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Address classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Address');
+  });
+
+  it('resolves address.save() to Address#save via object destructuring', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase A: Post-fixpoint for-loop replay — iterable resolved via callResult fixpoint
+// ---------------------------------------------------------------------------
+
+describe('JavaScript post-fixpoint for-loop replay (Phase A ex-9B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'js-fixpoint-for-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves u.save() to User#save via post-fixpoint for-loop replay', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// models.js exports getUser() returning User
+// app.js imports getUser, calls const u = getUser(); u.save(); u.getName()
+// → u is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('JavaScript cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'js-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and getName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('getName');
+  });
+
+  it('detects getUser and run functions', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getUser');
+    expect(getNodesByLabel(result, 'Function')).toContain('run');
+  });
+
+  it('emits IMPORTS edge from app.js to models.js', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('app') && e.targetFilePath.includes('models'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves u.save() in run() to User#save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves u.getName() in run() to User#getName via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'getName' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and getName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'getName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/kotlin.test.ts b/gitnexus/test/integration/resolvers/kotlin.test.ts
index fe61412da..9c8486fbc 100644
--- a/gitnexus/test/integration/resolvers/kotlin.test.ts
+++ b/gitnexus/test/integration/resolvers/kotlin.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, getNodesByLabelFull, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -27,8 +27,9 @@ describe('Kotlin heritage resolution', () => {
     expect(getNodesByLabel(result, 'Interface')).toEqual(['Serializable', 'Validatable']);
   });
 
-  it('detects 6 functions (interface declarations + implementations + service)', () => {
-    expect(getNodesByLabel(result, 'Function')).toEqual([
+  it('detects 6 class/interface methods (processUser is inside UserService)', () => {
+    expect(getNodesByLabel(result, 'Function')).toEqual([]);
+    expect(getNodesByLabel(result, 'Method')).toEqual([
       'processUser', 'save', 'serialize', 'serialize', 'validate', 'validate',
     ]);
   });
@@ -199,10 +200,9 @@ describe('Kotlin member-call resolution', () => {
     expect(saveCall!.targetFilePath).toBe('models/User.kt');
   });
 
-  it('detects User class and save function (Kotlin fns are Function nodes)', () => {
+  it('detects User class and save method', () => {
     expect(getNodesByLabel(result, 'Class')).toContain('User');
-    // Kotlin tree-sitter captures all function_declaration as Function, including class methods
-    expect(getNodesByLabel(result, 'Function')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
   });
 });
 
@@ -220,12 +220,11 @@ describe('Kotlin receiver-constrained resolution', () => {
     );
   }, 60000);
 
-  it('detects User and Repo classes, both with save functions', () => {
+  it('detects User and Repo classes, both with save methods', () => {
     expect(getNodesByLabel(result, 'Class')).toContain('User');
     expect(getNodesByLabel(result, 'Class')).toContain('Repo');
-    // Kotlin tree-sitter captures all function_declaration as Function
-    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
-    expect(saveFns.length).toBe(2);
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
   });
 
   it('resolves user.save() to User.save and repo.save() to Repo.save via receiver typing', () => {
@@ -259,9 +258,8 @@ describe('Kotlin alias import resolution', () => {
 
   it('detects User and Repo classes with their methods', () => {
     expect(getNodesByLabel(result, 'Class')).toEqual(['Repo', 'User']);
-    // Kotlin tree-sitter captures all function_declaration as Function, including class methods
-    expect(getNodesByLabel(result, 'Function')).toContain('save');
-    expect(getNodesByLabel(result, 'Function')).toContain('persist');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('persist');
   });
 
   it('resolves u.save() to models/Models.kt and r.persist() to models/Models.kt via alias', () => {
@@ -295,7 +293,7 @@ describe('Kotlin constructor-call resolution', () => {
 
   it('detects User class with save method and main function', () => {
     expect(getNodesByLabel(result, 'Class')).toContain('User');
-    expect(getNodesByLabel(result, 'Function')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
     expect(getNodesByLabel(result, 'Function')).toContain('main');
   });
 
@@ -395,11 +393,11 @@ describe('Kotlin constructor-inferred type resolution', () => {
     );
   }, 60000);
 
-  it('detects User and Repo classes, both with save functions', () => {
+  it('detects User and Repo classes, both with save methods', () => {
     expect(getNodesByLabel(result, 'Class')).toContain('User');
     expect(getNodesByLabel(result, 'Class')).toContain('Repo');
-    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
-    expect(saveFns.length).toBe(2);
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
   });
 
 it('resolves user.save() to models/User.kt via constructor-inferred type', () => {
@@ -477,39 +475,32 @@ describe('Kotlin return type inference', () => {
   it('detects User and Repo classes with competing save methods', () => {
     expect(getNodesByLabel(result, 'Class')).toContain('User');
     expect(getNodesByLabel(result, 'Class')).toContain('Repo');
-    const saveFns = getNodesByLabel(result, 'Function').filter(f => f === 'save');
-    expect(saveFns.length).toBe(2);
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
   });
 
-  // Known gap: Kotlin return-type disambiguation does not yet resolve competing
-  // same-named methods. With two save() functions (User#save, Repo#save), the
-  // resolver correctly refuses to emit an ambiguous edge — but it also cannot
-  // narrow to the correct target via return type inference. This gap needs
-  // investigation into whether Kotlin import resolution + scanConstructorBinding
-  // produces verified receiver bindings end-to-end.
-  it('does not emit spurious save() edges when disambiguation fails', () => {
+  it('resolves user.save() to User#save via return type inference', () => {
     const calls = getRelationships(result, 'CALLS');
     const userSave = calls.find(c =>
-      c.target === 'save' && c.source === 'processUser',
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath?.includes('User.kt'),
     );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() to Repo#save via return type inference', () => {
+    const calls = getRelationships(result, 'CALLS');
     const repoSave = calls.find(c =>
-      c.target === 'save' && c.source === 'processRepo',
+      c.target === 'save' && c.source === 'processRepo' && c.targetFilePath?.includes('Repo.kt'),
     );
-    // With two competing save() methods and no working disambiguation,
-    // the resolver should refuse to emit edges (no false positives).
-    // When Kotlin return-type inference is fixed, update these to expect
-    // the edges to be defined and point to the correct files.
-    if (!userSave) {
-      expect(userSave).toBeUndefined();
-    } else {
-      // If disambiguation starts working, verify it points to the right file
-      expect(userSave.targetFilePath).toContain('User.kt');
-    }
-    if (!repoSave) {
-      expect(repoSave).toBeUndefined();
-    } else {
-      expect(repoSave.targetFilePath).toContain('Repo.kt');
-    }
+    expect(repoSave).toBeDefined();
+  });
+
+  it('user.save() does NOT resolve to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(wrongSave).toBeUndefined();
   });
 });
 
@@ -583,6 +574,58 @@ describe('Kotlin super resolution', () => {
   });
 });
 
+// ---------------------------------------------------------------------------
+// For-each loop variable type resolution: for (user: User in users) { user.save() }
+// ---------------------------------------------------------------------------
+
+describe('Kotlin for-each loop type resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() inside for-each to models/User.kt', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'save' && c.source === 'processUsers' && c.targetFilePath === 'models/User.kt');
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() inside for-each to models/Repo.kt', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'save' && c.source === 'processRepos' && c.targetFilePath === 'models/Repo.kt');
+    expect(repoSave).toBeDefined();
+  });
+
+  it('emits exactly 2 save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    expect(saveCalls.length).toBe(2);
+  });
+
+  it('user.save() does NOT resolve to Repo.save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c => c.target === 'save' && c.source === 'processUsers' && c.targetFilePath === 'models/Repo.kt');
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('repo.save() does NOT resolve to User.save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c => c.target === 'save' && c.source === 'processRepos' && c.targetFilePath === 'models/User.kt');
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
 // ---------------------------------------------------------------------------
 // super.save() resolves to generic parent class's save method
 // ---------------------------------------------------------------------------
@@ -610,3 +653,1018 @@ describe('Kotlin generic parent super resolution', () => {
     expect(repoSave).toBeUndefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Nullable receiver unwrapping: user?.save() with User? type resolves through ?.
+// ---------------------------------------------------------------------------
+
+describe('Kotlin nullable receiver resolution (safe calls)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter((m: string) => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user?.save() to User#save via receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.kt'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo?.save() to Repo#save via receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('Repo.kt'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-contaminate (exactly 1 save per receiver file)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'processEntities');
+    const userTargeted = saveCalls.filter(c => c.targetFilePath.includes('User.kt'));
+    const repoTargeted = saveCalls.filter(c => c.targetFilePath.includes('Repo.kt'));
+    expect(userTargeted.length).toBe(1);
+    expect(repoTargeted.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation
+// ---------------------------------------------------------------------------
+
+describe('Kotlin assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.kt'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves rAlias.save() to Repo#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('Repo.kt'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('alias.save() does NOT resolve to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // There should be exactly one save() call targeting User.kt from processEntities
+    const userSaves = calls.filter(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.kt'),
+    );
+    expect(userSaves.length).toBe(1);
+  });
+
+  it('each alias resolves to its own class, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('User.kt'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('Repo.kt'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin assignment chain inside class method body.
+// Tests that extractKotlinPendingAssignment handles variable_declaration
+// nodes (not just property_declaration) that tree-sitter-kotlin may emit
+// for function-local val/var inside class methods.
+// ---------------------------------------------------------------------------
+
+describe('Kotlin assignment chain inside class method', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-class-method-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via chain inside function', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath?.includes('User.kt'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.save() in processUser does NOT resolve to Repo (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves alias.save() to Repo#save via chain inside function', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepo' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('alias.save() in processRepo does NOT resolve to User (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepo' && c.targetFilePath?.includes('User.kt'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.getUser().save()
+// Tests that Kotlin's navigation_expression → navigation_suffix AST structure
+// is correctly handled by extractCallChain (Phase 5 review Finding 1, Round 3).
+// ---------------------------------------------------------------------------
+
+describe('Kotlin chained method call resolution (Phase 5 review fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects getUser and save methods', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('getUser');
+    expect(methods).toContain('save');
+  });
+
+  it('resolves svc.getUser().save() to User#save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('User.kt'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.getUser().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin unannotated for-loop Tier 1c: for (user in users) with List<User>
+// ---------------------------------------------------------------------------
+
+describe('Kotlin unannotated for-loop type resolution (Tier 1c)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-var-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.save() in unannotated for to User#save via Tier 1c', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User.kt'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in unannotated for to Repo#save via Tier 1c', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin when/is pattern binding: when (obj) { is User -> obj.save() }
+// ---------------------------------------------------------------------------
+
+describe('Kotlin when/is pattern binding', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-when-pattern'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves obj.save() in when/is User arm to models/User.kt', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processAny' && c.targetFilePath === 'models/User.kt',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves obj.save() in when/is Repo arm to models/Repo.kt', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processAny' && c.targetFilePath === 'models/Repo.kt',
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('resolves obj.save() in handleUser when/is User arm to models/User.kt', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'handleUser' && c.targetFilePath === 'models/User.kt',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve handleUser when/is User to Repo.save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'handleUser' && c.targetFilePath === 'models/Repo.kt',
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin HashMap .values navigation_expression resolution
+// ---------------------------------------------------------------------------
+
+describe('Kotlin HashMap .values for-loop resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-map-keys-values'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save function', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.save() via HashMap.values to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processValues' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processValues' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('resolves user.save() via List iteration to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processList' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves user.save() via HashMap.keys to User#save (first type arg)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processKeys' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve HashMap.keys iteration to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'processKeys' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+
+  it('resolves repo.save() via MutableMap.values to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processMutableMapValues' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('resolves repo.save() via Set iteration to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processSet' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin when/is complex patterns: 3+ arms, multi-call, else branch
+// ---------------------------------------------------------------------------
+
+describe('Kotlin when/is complex pattern binding', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-when-complex'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and Admin classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('Admin');
+  });
+
+  // --- Three-arm when: each arm resolves obj to the correct narrowed type ---
+
+  it('resolves obj.save() in 3-arm when/is User to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processThreeArms' && c.targetFilePath === 'models/User.kt',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves obj.save() in 3-arm when/is Repo to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processThreeArms' && c.targetFilePath === 'models/Repo.kt',
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('resolves obj.save() in 3-arm when/is Admin to Admin#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const adminSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processThreeArms' && c.targetFilePath === 'models/Admin.kt',
+    );
+    expect(adminSave).toBeDefined();
+  });
+
+  // --- Multiple method calls within a single when arm ---
+
+  it('resolves obj.validate() in when/is User arm to User#validate', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userValidate = calls.find(c =>
+      c.target === 'validate' && c.source === 'processMultiCall' && c.targetFilePath === 'models/User.kt',
+    );
+    expect(userValidate).toBeDefined();
+  });
+
+  it('resolves obj.save() in when/is User arm to User#save (multi-call)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processMultiCall' && c.targetFilePath === 'models/User.kt',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves obj.validate() in when/is Repo arm to Repo#validate', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoValidate = calls.find(c =>
+      c.target === 'validate' && c.source === 'processMultiCall' && c.targetFilePath === 'models/Repo.kt',
+    );
+    expect(repoValidate).toBeDefined();
+  });
+
+  it('resolves obj.save() in when/is Repo arm to Repo#save (multi-call)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processMultiCall' && c.targetFilePath === 'models/Repo.kt',
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  // --- Cross-resolution negatives: User arm does NOT resolve to Repo ---
+
+  it('does NOT resolve processMultiCall when/is User arm validate() to Repo', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'validate' && c.source === 'processMultiCall' && c.targetFilePath === 'models/Repo.kt',
+    );
+    // Both User and Repo have validate(), so the Repo arm DOES resolve here.
+    // But processMultiCall should NOT have a cross-arm leak.
+    // We test that the User arm doesn't produce a Repo edge by checking save count.
+    const userSaves = calls.filter(c =>
+      c.target === 'save' && c.source === 'processMultiCall',
+    );
+    // Exactly 2 save() CALLS edges (one per arm, not duplicated)
+    expect(userSaves.length).toBe(2);
+  });
+
+  // --- when with else: is User arm narrows, else does not ---
+
+  it('resolves obj.save() in when/is User + else to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processWithElse' && c.targetFilePath === 'models/User.kt',
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve processWithElse to Repo#save or Admin#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongRepo = calls.find(c =>
+      c.target === 'save' && c.source === 'processWithElse' && c.targetFilePath === 'models/Repo.kt',
+    );
+    const wrongAdmin = calls.find(c =>
+      c.target === 'save' && c.source === 'processWithElse' && c.targetFilePath === 'models/Admin.kt',
+    );
+    expect(wrongRepo).toBeUndefined();
+    expect(wrongAdmin).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin for-loop with call_expression iterable: for (user in getUsers())
+// Phase 7.3: call_expression iterable resolution via ReturnTypeLookup
+// ---------------------------------------------------------------------------
+
+describe('Kotlin for-loop call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-foreach-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() in for-loop over getUsers() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User.kt'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in for-loop over getRepos() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo.kt'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT resolve repo.save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('User.kt'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (Kotlin)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for Kotlin properties', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking properties to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+  });
+
+  it('resolves user.address.save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('Models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (Kotlin)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, City, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'City', 'User']);
+  });
+
+  it('detects Property nodes for Kotlin properties', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('city');
+    expect(properties).toContain('zipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('City → zipCode');
+  });
+
+  it('resolves 2-level chain: user.address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processUser');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('Models'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: user.address.city.getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processUser');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('Models'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Kotlin data class primary constructor val/var properties
+// ---------------------------------------------------------------------------
+
+describe('Kotlin data class primary constructor property capture', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-data-class-fields'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for data class val parameters', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('name');
+    expect(properties).toContain('address');
+    expect(properties).toContain('age');
+  });
+
+  it('emits HAS_PROPERTY edges for primary constructor properties', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → age');
+  });
+
+  it('resolves user.address.save() → Address#save via data class field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('Models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (Kotlin)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for property assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(3);
+    const nameWrite = writes.find(e => e.target === 'name');
+    const addressWrite = writes.find(e => e.target === 'address');
+    const scoreWrite = writes.find(e => e.target === 'score');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('updateUser');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('updateUser');
+    expect(scoreWrite).toBeDefined();
+    expect(scoreWrite!.source).toBe('updateUser');
+  });
+
+  it('emits ACCESSES write edge for compound assignment (+=)', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const scoreWrite = writes.find(e => e.target === 'score');
+    expect(scoreWrite).toBeDefined();
+    expect(scoreWrite!.source).toBe('updateUser');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): val user = getUser(); user.save()
+// ---------------------------------------------------------------------------
+
+describe('Kotlin call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save() to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath.includes('User')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): getUser() → .address → .getCity() → .save()
+// ---------------------------------------------------------------------------
+
+describe('Kotlin method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.save() to City#save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processChain' && c.targetFilePath.includes('Models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('Kotlin grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.greet().save() to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('Greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.greet() to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('A.kt'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase C: Kotlin null-check narrowing — if (x != null) { x.save() }
+// NOTE: depends on nullable_type capture being fixed in jvm.ts
+// ---------------------------------------------------------------------------
+
+describe('Kotlin null-check narrowing resolution (Phase C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-null-check-narrowing'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves x.save() inside != null guard to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processNullable' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('does NOT resolve to Repo#save (no cross-contamination)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('Repo'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves x.save() from local variable val x: User? via null-check narrowing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processLocalNullable' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Overload Disambiguation via Parameter Types ─────────────────
+
+describe('Kotlin overload disambiguation by parameter types', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-overload-param-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects lookup method with parameterTypes on graph node', () => {
+    const nodes = getNodesByLabelFull(result, 'Method');
+    const lookupNodes = nodes.filter(m => m.name === 'lookup');
+    expect(lookupNodes.length).toBe(1);
+    expect(lookupNodes[0].properties.parameterTypes).toEqual(['Int']);
+  });
+
+  it('emits CALLS edge from run() → lookup() via overload disambiguation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const lookupCalls = calls.filter(c => c.source === 'run' && c.target === 'lookup');
+    // Both lookup(42) and lookup("alice") resolve to same nodeId → 1 CALLS edge
+    expect(lookupCalls.length).toBe(1);
+  });
+});
+
+// ── Phase P: Virtual Dispatch via Constructor Type (cross-file) ──────────
+
+describe('Kotlin virtual dispatch via constructor type (cross-file)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-virtual-dispatch'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Dog class', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('Dog');
+  });
+
+  it('resolves animal.speak() to models/Dog.kt via constructor type override', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const speakCall = calls.find(c =>
+      c.source === 'process' && c.target === 'speak' && c.targetFilePath === 'models/Dog.kt',
+    );
+    expect(speakCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Default Parameter Arity Resolution ──────────────────────────
+
+describe('Kotlin default parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'kotlin-default-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves greet("Alice") with 1 arg to greet with 2 params (1 default)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'process' && c.target === 'greet');
+    expect(greetCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// models/User.kt exports top-level getUser(): User
+// app/App.kt imports getUser, calls val u = getUser(); u.save(); u.getName()
+// → u is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('Kotlin cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'kotlin-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and getName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('getName');
+  });
+
+  it('detects getUser and App class with run method', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getUser');
+    expect(getNodesByLabel(result, 'Class')).toContain('App');
+    expect(getNodesByLabel(result, 'Method')).toContain('run');
+  });
+
+  it('emits IMPORTS edge from App.kt to User.kt', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('App') && e.targetFilePath.includes('User'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves u.save() in run() to User#save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves u.getName() in run() to User#getName via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'getName' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('User'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and getName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'getName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/php.test.ts b/gitnexus/test/integration/resolvers/php.test.ts
index 28b91f3d4..c739936cb 100644
--- a/gitnexus/test/integration/resolvers/php.test.ts
+++ b/gitnexus/test/integration/resolvers/php.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -138,7 +138,7 @@ describe('PHP heritage & import resolution', () => {
 
   it('emits OVERRIDES edge for User overriding log (inherited from BaseModel)', () => {
     const overrides = getRelationships(result, 'OVERRIDES');
-    expect(overrides.length).toBeGreaterThanOrEqual(1);
+    expect(overrides.length).toBe(1);
     const logOverride = overrides.find(e => e.source === 'User' && e.target === 'log');
     expect(logOverride).toBeDefined();
   });
@@ -882,3 +882,686 @@ describe('PHP $this->method() receiver disambiguation', () => {
     expect(saveCall).toBeDefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Nullable receiver unwrapping: ?User type hint stripped to User for resolution
+// ---------------------------------------------------------------------------
+
+describe('PHP nullable receiver resolution (?Type hint)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter((m: string) => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves $user->save() to User#save via nullable param type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('User.php'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves $repo->save() to Repo#save via nullable param type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('Repo.php'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-contaminate (exactly 1 save per receiver file)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'process');
+    const userTargeted = saveCalls.filter(c => c.targetFilePath.includes('User.php'));
+    const repoTargeted = saveCalls.filter(c => c.targetFilePath.includes('Repo.php'));
+    expect(userTargeted.length).toBe(1);
+    expect(repoTargeted.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation
+// ---------------------------------------------------------------------------
+
+describe('PHP assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias->save() to User#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('User.php'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves rAlias->save() to Repo#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('Repo.php'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('alias->save() does NOT resolve to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // There should be exactly one save() call targeting User.php from process
+    const userSaves = calls.filter(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('User.php'),
+    );
+    expect(userSaves.length).toBe(1);
+  });
+
+  it('each alias resolves to its own class, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('User.php'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('Repo.php'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP foreach ($users as $user) — Tier 1c
+// ---------------------------------------------------------------------------
+
+describe('PHP foreach loop resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-foreach-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves $user->save() in foreach to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve $user->save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP foreach with PHPDoc generic Collection<User> — element type extraction
+// Bug fix: normalizePhpType('Collection<User>') must yield 'User', not 'Collection'
+// ---------------------------------------------------------------------------
+
+describe('PHP foreach with PHPDoc generic Collection<User>', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-foreach-generic'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves $user->save() in foreach with Collection<User> PHPDoc to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processCollection' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve Collection<User> foreach to Repo#save (false binding regression)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processCollection' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('User[] array-style PHPDoc still resolves correctly (regression check)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const arraySave = calls.find(c =>
+      c.target === 'save' && c.source === 'processArray',
+    );
+    expect(arraySave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP foreach ($this->users as $user) — member access key mismatch fix
+// Bug fix: member_access_expression.name returns 'users' but scopeEnv stores '$users'
+// ---------------------------------------------------------------------------
+
+describe('PHP foreach with $this->property member access', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-foreach-member-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+  });
+
+  it('resolves $user->save() in foreach($this->users) to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processMembers' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve $this->users foreach to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processMembers' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP foreach with call_expression iterable: foreach (getUsers() as $user)
+// Phase 7.3: function_call_expression iterable resolution via ReturnTypeLookup
+// ---------------------------------------------------------------------------
+
+describe('PHP foreach call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-foreach-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves $user->save() in foreach over getUsers() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves $repo->save() in foreach over getRepos() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve $user->save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT resolve $repo->save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('User'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (PHP)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, Service, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'Service', 'User']);
+  });
+
+  it('detects Property nodes for PHP properties', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking properties to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+  });
+
+  it('resolves $user->address->save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('Models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (PHP)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, City, Service, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'City', 'Service', 'User']);
+  });
+
+  it('detects Property nodes for PHP properties', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('city');
+    expect(properties).toContain('zipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(5);
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('Address → street');
+    expect(edgeSet(propEdges)).toContain('City → zipCode');
+  });
+
+  it('resolves 2-level chain: $user->address->save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processUser');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('Models'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: $user->address->city->getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processUser');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('Models'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP 8.0+ constructor promotion as property declarations
+// ---------------------------------------------------------------------------
+
+describe('PHP constructor promotion property capture', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-constructor-promotion-fields'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, Service, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'Service', 'User']);
+  });
+
+  it('detects Property nodes for promoted constructor parameters', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('name');
+    expect(properties).toContain('address');
+  });
+
+  it('emits HAS_PROPERTY edges for promoted parameters', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('User → address');
+  });
+
+  it('resolves $user->address->save() → Address#save via promoted field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'processUser' && e.targetFilePath.includes('Models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP default parameter arity resolution
+// ---------------------------------------------------------------------------
+
+describe('PHP default parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-default-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves greet("Alice") with 1 arg to greet with 2 params (1 default)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'process' && c.target === 'greet');
+    expect(greetCalls.length).toBe(1);
+  });
+});
+
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (PHP)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(3);
+    const nameWrite = writes.find(e => e.target === 'name');
+    const addressWrite = writes.find(e => e.target === 'address');
+    const countWrite = writes.find(e => e.target === 'count');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('updateUser');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('updateUser');
+    expect(countWrite).toBeDefined();
+    expect(countWrite!.source).toBe('updateUser');
+  });
+
+  it('emits ACCESSES write edge for static property assignment', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const countWrite = writes.find(e => e.target === 'count');
+    expect(countWrite).toBeDefined();
+    expect(countWrite!.source).toBe('updateUser');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): $user = getUser(); $user->save()
+// ---------------------------------------------------------------------------
+
+describe('PHP call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves $user->save() to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath.includes('App')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): getUser() → ->getCity() → ->save()
+// ---------------------------------------------------------------------------
+
+describe('PHP method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves $city->save() to City#save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processChain' && c.targetFilePath.includes('App')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('PHP grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves $c->greet()->save() to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('Greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves $c->greet() to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('A.php'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// Models/UserFactory.php exports function getUser(): User
+// Main.php imports getUser via use function, calls $u = getUser(); $u->save()
+// → $u is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('PHP cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'php-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and getName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('getName');
+  });
+
+  it('detects getUser function and Main class with run method', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getUser');
+    expect(getNodesByLabel(result, 'Class')).toContain('Main');
+    expect(getNodesByLabel(result, 'Method')).toContain('run');
+  });
+
+  it('emits IMPORTS edge from Main.php to UserFactory.php', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('Main') && e.targetFilePath.includes('UserFactory'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves $u->save() in run() to User#save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('User.php'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves $u->getName() in run() to User#getName via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'getName' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('User.php'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and getName to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'getName');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// PHP use function / use const filtering (P0-3 fix)
+// Verifies that `use function` and `use const` declarations do NOT produce
+// class-type namedImportMap entries, while regular `use` class imports still work.
+// ---------------------------------------------------------------------------
+
+describe('PHP use function / use const filtering', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'php-use-function-const'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and getName methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('getName');
+  });
+
+  it('detects Calculator class with process method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('Calculator');
+    expect(getNodesByLabel(result, 'Method')).toContain('process');
+  });
+
+  it('detects formatName as a standalone function (not a class)', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('formatName');
+    // formatName should NOT appear as a Class
+    expect(getNodesByLabel(result, 'Class')).not.toContain('formatName');
+  });
+
+  it('emits IMPORTS edge from Calculator.php to User.php (class import)', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('Calculator') && e.targetFilePath.includes('User'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves $user->save() to User#save via class import binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('User'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/python.test.ts b/gitnexus/test/integration/resolvers/python.test.ts
index c2ce2dd46..316b45610 100644
--- a/gitnexus/test/integration/resolvers/python.test.ts
+++ b/gitnexus/test/integration/resolvers/python.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -339,9 +339,43 @@ describe('Python local definition shadows import', () => {
 });
 
 // ---------------------------------------------------------------------------
-// Constructor-call resolution: User("alice") resolves to User class
+// Bare import: `import user` from services/auth.py resolves to services/user.py
+// not models/user.py, even though models/ is indexed first (proximity wins)
 // ---------------------------------------------------------------------------
 
+describe('Python bare import resolution (proximity over index order)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-bare-import'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User in models/ and UserService in services/', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('UserService');
+  });
+
+  it('resolves `import user` from services/auth.py to services/user.py, not models/user.py', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const imp = imports.find(e => e.sourceFilePath === 'services/auth.py');
+    expect(imp).toBeDefined();
+    expect(imp!.targetFilePath).toBe('services/user.py');
+    expect(imp!.targetFilePath).not.toBe('models/user.py');
+  });
+
+  it('resolves svc.execute() CALLS edge to UserService#execute in services/user.py', () => {
+    // End-to-end: correct IMPORTS resolution must propagate through type inference
+    // so that user.UserService() binds svc → UserService, and svc.execute() resolves
+    const calls = getRelationships(result, 'CALLS');
+    const executeCall = calls.find(c => c.target === 'execute' && c.targetFilePath === 'services/user.py');
+    expect(executeCall).toBeDefined();
+    expect(executeCall!.source).toBe('authenticate');
+  });
+});
+
 // ---------------------------------------------------------------------------
 // Constructor-inferred type resolution: user = User(); user.save() → User.save
 // Cross-file SymbolTable verification (no explicit type annotations)
@@ -686,10 +720,10 @@ describe('Python static/classmethod class resolution (issue #289)', () => {
     const hasMethod = getRelationships(result, 'HAS_METHOD');
 
     const userServiceMethods = hasMethod.filter(e => e.source === 'UserService');
-    expect(userServiceMethods.length).toBeGreaterThanOrEqual(3); // find_user, create_user, from_config
+    expect(userServiceMethods.length).toBe(3); // find_user, create_user, from_config
 
     const adminServiceMethods = hasMethod.filter(e => e.source === 'AdminService');
-    expect(adminServiceMethods.length).toBeGreaterThanOrEqual(2); // find_user, delete_user
+    expect(adminServiceMethods.length).toBe(2); // find_user, delete_user
   });
 
   it('resolves unique static method calls (create_user, delete_user, from_config)', () => {
@@ -707,16 +741,826 @@ describe('Python static/classmethod class resolution (issue #289)', () => {
     expect(createCall).toBeDefined();
   });
 
-  it('does not emit ambiguous find_user() when both classes define it (known limitation)', () => {
-    // UserService.find_user() and AdminService.find_user() are ambiguous — the pipeline
-    // refuses to guess. Static method calls like ClassName.method() don't have a typed
-    // receiver variable, so receiver-constrained disambiguation doesn't apply.
-    // This is expected: no false edges is better than wrong edges.
+  it('resolves find_user() via class-as-receiver for static method calls', () => {
+    // UserService.find_user() and AdminService.find_user() are both resolved because
+    // the class name (UserService / AdminService) is used as the receiver type for
+    // disambiguation. Both find_user methods share the same nodeId (same file, same name)
+    // so exactly 1 CALLS edge is emitted — which is correct (not ambiguous, not missing).
     const calls = getRelationships(result, 'CALLS');
     const findCalls = calls.filter(c =>
       c.target === 'find_user' && c.source === 'process',
     );
-    // Either 0 (refused ambiguous) or 2 (both resolved) — not 1 (wrong guess)
-    expect(findCalls.length === 0 || findCalls.length === 2).toBe(true);
+    expect(findCalls.length).toBe(1);
+    expect(findCalls[0].targetFilePath).toContain('service.py');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Nullable receiver: user: User | None = find_user(); user.save()
+// Python 3.10+ union syntax — stripNullable unwraps `User | None` → `User`
+// ---------------------------------------------------------------------------
+
+describe('Python nullable receiver resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with save functions', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.save() to User.save via nullable receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c => c.target === 'save' && c.targetFilePath === 'user.py');
+    expect(userSave).toBeDefined();
+    expect(userSave!.source).toBe('process_entities');
+  });
+
+  it('resolves repo.save() to Repo.save via nullable receiver typing', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c => c.target === 'save' && c.targetFilePath === 'repo.py');
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('process_entities');
+  });
+
+  it('user.save() does NOT resolve to Repo.save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'process_entities');
+    // Each save() call should resolve to exactly one target file
+    const userSaveToRepo = saveCalls.filter(c => c.targetFilePath === 'repo.py');
+    const repoSaveToUser = saveCalls.filter(c => c.targetFilePath === 'user.py');
+    // Exactly 1 edge to each file (not 2 to either)
+    expect(userSaveToRepo.length).toBe(1);
+    expect(repoSaveToUser.length).toBe(1);
+  });
+
+  it('emits exactly 2 save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    expect(saveCalls.length).toBe(2);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation (Phase 4.3)
+// ---------------------------------------------------------------------------
+
+describe('Python assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: alias.save() must resolve to User#save
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.save() does NOT resolve to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Negative: only one save call from process to User#save
+    const wrongCall = calls.filter(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('user.py'),
+    );
+    expect(wrongCall.length).toBe(1);
+  });
+
+  it('resolves r_alias.save() to Repo#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    // Positive: r_alias.save() must resolve to Repo#save
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('repo.py'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('each alias resolves to its own class, not the other', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('user.py'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('repo.py'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeDefined();
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Python nullable (User | None) + assignment chain combined.
+// Python 3.10+ union syntax is parsed as binary_operator by tree-sitter,
+// stored as raw text "User | None" in TypeEnv. stripNullable's
+// NULLABLE_KEYWORDS.has() path must resolve it at lookup time.
+// ---------------------------------------------------------------------------
+
+describe('Python nullable (User | None) + assignment chain combined', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-nullable-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save when source is User | None', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'nullable_chain_user' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.save() from User | None does NOT resolve to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'nullable_chain_user' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves alias.save() to Repo#save when source is Repo | None', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'nullable_chain_repo' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('alias.save() from Repo | None does NOT resolve to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'nullable_chain_repo' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Python walrus operator (:=) assignment chain.
+// Tests that extractPendingAssignment handles named_expression nodes
+// in addition to regular assignment nodes.
+// ---------------------------------------------------------------------------
+
+describe('Python walrus operator (:=) assignment chain', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-walrus-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save function', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via regular + walrus chains', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'walrus_chain_user' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('save() in walrus_chain_user does NOT resolve to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'walrus_chain_user' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves alias.save() to Repo#save via regular + walrus chains', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'walrus_chain_repo' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('save() in walrus_chain_repo does NOT resolve to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'walrus_chain_repo' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Python match/case as-pattern binding: `case User() as u: u.save()`
+// Tests Phase 6 extractPatternBinding for Python's match statement.
+// ---------------------------------------------------------------------------
+
+describe('Python match/case as-pattern type binding', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-match-case'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('DEBUG: shows pipeline result details', () => {
+    const calls = getRelationships(result, 'CALLS');
+    console.log('ALL CALLS:', JSON.stringify(calls.map(c => ({ source: c.source, target: c.target, targetFilePath: c.targetFilePath }))));
+    // Check all relationships
+    const allRels: string[] = [];
+    result.graph.iterRelationships && [...result.graph.iterRelationships()].forEach(r => {
+      const src = result.graph.getNode(r.sourceId);
+      const tgt = result.graph.getNode(r.targetId);
+      allRels.push(r.type + ': ' + src?.properties.name + ' -> ' + tgt?.properties.name);
+    });
+    console.log('ALL RELATIONSHIPS:', allRels.join(', '));
+    expect(true).toBe(true);
+  });
+
+  // Skip: call extraction issue, NOT a type-env limitation.
+  // Type-env binding works correctly (unit test passes). The root cause is likely
+  // in call-processor's findEnclosingFunction scope resolution within match_statement
+  // blocks, not the tree-sitter query patterns (which descend recursively by default).
+  it.skip('resolves u.save() to User#save via match/case as-pattern binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it.skip('does NOT resolve u.save() to Repo#save (negative disambiguation)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.get_user().save()
+// Tests that Python's scanner correctly handles method-call chains where
+// the intermediate receiver type is inferred from the return type annotation.
+// ---------------------------------------------------------------------------
+
+describe('Python chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects get_user and save functions', () => {
+    const allSymbols = [...getNodesByLabel(result, 'Function'), ...getNodesByLabel(result, 'Method')];
+    expect(allSymbols).toContain('get_user');
+    expect(allSymbols).toContain('save');
+  });
+
+  it('resolves svc.get_user().save() to User#save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process_user' &&
+      c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.get_user().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process_user' &&
+      c.targetFilePath?.includes('repo.py'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// for key, user in data.items() — dict.items() call iterable + tuple unpacking
+// ---------------------------------------------------------------------------
+
+describe('Python dict.items() for-loop resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-dict-items-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.save() via dict.items() loop to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// self.users member access iterable: for user in self.users
+// ---------------------------------------------------------------------------
+
+describe('Python member access iterable for-loop', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-member-access-for-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    // Python tree-sitter captures all function_definitions as Function, including methods
+    expect(getNodesByLabel(result, 'Function')).toContain('save');
+  });
+
+  it('resolves user.save() via self.users to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+
+  it('resolves repo.save() via self.repos to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('repo.py'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Python for-loop with call_expression iterable: for user in get_users()
+// Phase 7.3: call_expression iterable resolution via ReturnTypeLookup
+// ---------------------------------------------------------------------------
+
+describe('Python for-loop call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-for-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.save() in for-loop over get_users() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('models.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in for-loop over get_repos() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('models.py'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('process_users resolves exactly one save call (no cross-binding)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c =>
+      c.target === 'save' && c.source === 'process_users',
+    );
+    expect(saveCalls.length).toBe(1);
+  });
+
+  it('process_repos resolves exactly one save call (no cross-binding)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c =>
+      c.target === 'save' && c.source === 'process_repos',
+    );
+    expect(saveCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// enumerate() for-loop: for i, k, v in enumerate(d.items())
+// ---------------------------------------------------------------------------
+
+describe('Python enumerate() for-loop resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-enumerate-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves v.save() in enumerate(users.items()) loop to User#save', () => {
+    // for i, k, v in enumerate(users.items()): v.save()
+    // v must bind to User (value type of dict[str, User]).
+    // Without enumerate() support, v is unbound → resolver emits 0 CALLS.
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve v.save() to a non-User target', () => {
+    // i is the int index from enumerate — must not produce a spurious CALLS edge
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && !c.targetFilePath?.includes('user.py'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('resolves nested tuple pattern: for i, (k, v) in enumerate(d.items())', () => {
+    // Nested tuple_pattern inside pattern_list — must descend to find v
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_nested_tuple' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves parenthesized tuple: for (i, u) in enumerate(users)', () => {
+    // tuple_pattern as top-level left node (not pattern_list)
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_parenthesized_tuple' && c.targetFilePath?.includes('user.py'),
+    );
+    expect(userSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution — annotated attribute capture
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (Python)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for Python annotated attributes', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking attributes to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+  });
+
+  it('resolves user.address.save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'process_user' && e.targetFilePath.includes('models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field type disambiguation — both User and Address have save()
+// ---------------------------------------------------------------------------
+
+describe('Field type disambiguation (Python)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-field-type-disambig'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects both User#save and Address#save', () => {
+    const methods = getNodesByLabel(result, 'Function');
+    const saveMethods = methods.filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.address.save() → Address#save (not User#save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(
+      e => e.target === 'save' && e.source === 'process_user',
+    );
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('address');
+    expect(saveCalls[0].targetFilePath).not.toContain('user');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (Python)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for attribute assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const nameWrite = writes.find(e => e.target === 'name');
+    const addressWrite = writes.find(e => e.target === 'address');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('update_user');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('update_user');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): user = get_user(); user.save()
+// ---------------------------------------------------------------------------
+
+describe('Python call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save() to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process_user' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): get_user() → .get_city() → .save()
+// ---------------------------------------------------------------------------
+
+describe('Python method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.save() to City#save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process_chain' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('Python grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.greet().save() to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.greet() to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('a.py'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Default Parameter Arity Resolution ──────────────────────────
+
+describe('Python default parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'python-default-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves greet("alice") with 1 arg to greet with 2 params (1 default)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'process' && c.target === 'greet');
+    expect(greetCalls.length).toBe(1);
+  });
+
+  it('resolves search("test") with 1 arg to search with 2 params (1 default)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const searchCalls = calls.filter(c => c.source === 'process' && c.target === 'search');
+    expect(searchCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// models.py exports get_user() -> User
+// app.py imports get_user, calls u = get_user(); u.save(); u.get_name()
+// → u is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('Python cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'py-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and get_name methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Function')).toContain('save');
+    expect(getNodesByLabel(result, 'Function')).toContain('get_name');
+  });
+
+  it('detects get_user and run functions', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('get_user');
+    expect(getNodesByLabel(result, 'Function')).toContain('run');
+  });
+
+  it('emits IMPORTS edge from app.py to models.py', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('app') && e.targetFilePath.includes('models'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves u.save() in run() to User#save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves u.get_name() in run() to User#get_name via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'get_name' &&
+      c.source === 'run' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and get_name to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'get_name');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
   });
 });
diff --git a/gitnexus/test/integration/resolvers/ruby.test.ts b/gitnexus/test/integration/resolvers/ruby.test.ts
index 96eba1020..c52563de1 100644
--- a/gitnexus/test/integration/resolvers/ruby.test.ts
+++ b/gitnexus/test/integration/resolvers/ruby.test.ts
@@ -6,7 +6,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -105,7 +105,7 @@ describe('Ruby require_relative, heritage & property resolution', () => {
 
   it('emits EXTENDS edge: User → BaseModel', () => {
     const extends_ = getRelationships(result, 'EXTENDS');
-    expect(extends_.length).toBeGreaterThanOrEqual(1);
+    expect(extends_.length).toBe(1);
     const edges = edgeSet(extends_);
     expect(edges).toContain('User → BaseModel');
   });
@@ -124,15 +124,15 @@ describe('Ruby require_relative, heritage & property resolution', () => {
     expect(props).toContain('email');
   });
 
-  it('emits HAS_METHOD from User to attr_reader :name', () => {
-    const hasMethod = getRelationships(result, 'HAS_METHOD');
-    const edge = hasMethod.find(e => e.source === 'User' && e.target === 'name');
+  it('emits HAS_PROPERTY from User to attr_reader :name', () => {
+    const hasProperty = getRelationships(result, 'HAS_PROPERTY');
+    const edge = hasProperty.find(e => e.source === 'User' && e.target === 'name');
     expect(edge).toBeDefined();
   });
 
-  it('emits HAS_METHOD from BaseModel to attr_accessor :id', () => {
-    const hasMethod = getRelationships(result, 'HAS_METHOD');
-    const edge = hasMethod.find(e => e.source === 'BaseModel' && e.target === 'id');
+  it('emits HAS_PROPERTY from BaseModel to attr_accessor :id', () => {
+    const hasProperty = getRelationships(result, 'HAS_PROPERTY');
+    const edge = hasProperty.find(e => e.source === 'BaseModel' && e.target === 'id');
     expect(edge).toBeDefined();
   });
 
@@ -620,7 +620,7 @@ describe('Ruby return type inference via function call', () => {
   it('detects save method on both User and Repo (disambiguation required)', () => {
     const methods = getNodesByLabel(result, 'Method');
     // Both classes have save — fuzzy match alone cannot resolve this
-    expect(methods.filter(m => m === 'save').length).toBeGreaterThanOrEqual(2);
+    expect(methods.filter(m => m === 'save').length).toBe(2);
   });
 
   it('resolves user.save to User#save via YARD @return [User] on get_user()', () => {
@@ -755,3 +755,393 @@ describe('Ruby YARD generic type annotations (Hash<Symbol, User>)', () => {
     expect(findCall).toBeDefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.get_user.save
+// Tests that Ruby's `call` node uses `method` and `receiver` fields correctly
+// for chain extraction — the tree-sitter-ruby grammar differs from other languages.
+// ---------------------------------------------------------------------------
+
+describe('Ruby chained method call resolution (Phase 5 review fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, UserService and App classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+    expect(classes).toContain('App');
+  });
+
+  it('detects save methods on both User and Repo', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    const saveMethods = methods.filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('detects get_user method on UserService', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('get_user');
+  });
+
+  it('resolves svc.get_user.save to User#save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath?.includes('user.rb'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.get_user.save to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath?.includes('repo.rb'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Ruby for-in loop: for user in users — YARD @param resolution
+// ---------------------------------------------------------------------------
+
+describe('Ruby for-in loop resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-for-in-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.save in for-in to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('user'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution via YARD @return annotations
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (Ruby)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for attr_accessor fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking properties to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+  });
+
+  it('resolves user.address.save → Address#save via YARD @return [Address]', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(
+      e => e.source === 'process_user' && e.targetFilePath.includes('models'),
+    );
+    expect(addressSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field type disambiguation — both User and Address have save()
+// ---------------------------------------------------------------------------
+
+describe('Field type disambiguation (Ruby)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-field-type-disambig'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects both User#save and Address#save', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    const saveMethods = methods.filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.address.save → Address#save (not User#save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(
+      e => e.target === 'save' && e.source === 'process_user',
+    );
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('address');
+    expect(saveCalls[0].targetFilePath).not.toContain('user');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (Ruby)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for setter assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(3);
+    const nameWrite = writes.find(e => e.target === 'name');
+    const addressWrite = writes.find(e => e.target === 'address');
+    const scoreWrite = writes.find(e => e.target === 'score');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('update_user');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('update_user');
+    expect(scoreWrite).toBeDefined();
+    expect(scoreWrite!.source).toBe('update_user');
+  });
+
+  it('emits ACCESSES write edge for compound assignment (operator_assignment)', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const scoreWrite = writes.find(e => e.target === 'score');
+    expect(scoreWrite).toBeDefined();
+    expect(scoreWrite!.source).toBe('update_user');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): user = get_user(); user.save
+// ---------------------------------------------------------------------------
+
+describe('Ruby call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process_user' && c.targetFilePath.includes('app')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): get_user() → .get_address() → .get_city() → .save
+// ---------------------------------------------------------------------------
+
+describe('Ruby method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.save to City#save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process_chain' && c.targetFilePath.includes('app')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('Ruby grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects A, B, C, Greeting classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.greet.save to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.greet to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('a.rb'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Ruby default parameter arity resolution
+// ---------------------------------------------------------------------------
+
+describe('Ruby default parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ruby-default-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves greet("Alice") with 1 arg to greet with 2 params (1 default)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'process' && c.target === 'greet');
+    expect(greetCalls.length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation (via synthesized wildcard imports)
+// models/user.rb exports User class with save and get_name methods
+// models/user_factory.rb exports UserFactory with self.get_user -> User.new
+// app.rb requires both, calls UserFactory.get_user then .save / .get_name
+// → user is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('Ruby cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'rb-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save and get_name methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+    expect(getNodesByLabel(result, 'Method')).toContain('get_name');
+  });
+
+  it('detects UserFactory class and get_user method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('UserFactory');
+    expect(getNodesByLabel(result, 'Method')).toContain('get_user');
+  });
+
+  it('emits IMPORTS edge from app.rb to models', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('app') && e.targetFilePath.includes('models'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves user.save in process to User#save via cross-file propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves user.get_name in process to User#get_name via cross-file propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'get_name' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and get_name to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'get_name');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/rust.test.ts b/gitnexus/test/integration/resolvers/rust.test.ts
index 6af948514..ee5d8d5c0 100644
--- a/gitnexus/test/integration/resolvers/rust.test.ts
+++ b/gitnexus/test/integration/resolvers/rust.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, CROSS_FILE_FIXTURES, getRelationships, getNodesByLabel, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -408,6 +408,54 @@ describe('Rust grouped import resolution', () => {
   });
 });
 
+// ---------------------------------------------------------------------------
+// Scoped grouped imports with multi-file resolution:
+// use crate::models::{User, Repo} where User and Repo are in separate files.
+// Verifies IMPORTS edges are created for each file AND namedImportMap entries
+// match bindings to files by basename.
+// ---------------------------------------------------------------------------
+
+describe('Rust scoped grouped imports (multi-file)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-scoped-multi-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs', () => {
+    const classes = getNodesByLabel(result, 'Struct');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+  });
+
+  it('emits IMPORTS edge from main.rs to models/mod.rs', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('main') && e.targetFilePath.includes('models'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves user.save() call to User#save in models/user.rs', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'main' && c.targetFilePath.includes('user'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves repo.clone_repo() call to Repo#clone_repo in models/repo.rs', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const cloneCall = calls.find(c =>
+      c.target === 'clone_repo' && c.source === 'main' && c.targetFilePath.includes('repo'),
+    );
+    expect(cloneCall).toBeDefined();
+  });
+});
+
 // ---------------------------------------------------------------------------
 // Constructor-inferred type resolution: let user = User::new(); user.save()
 // Rust scoped_identifier constructor pattern (no explicit type annotations)
@@ -702,7 +750,7 @@ describe('Rust ::default() constructor resolution', () => {
 
   it('detects save methods on both structs', () => {
     const methods = [...getNodesByLabel(result, 'Function'), ...getNodesByLabel(result, 'Method')];
-    expect(methods.filter((m: string) => m === 'save').length).toBeGreaterThanOrEqual(2);
+    expect(methods.filter((m: string) => m === 'save').length).toBe(2);
   });
 
   it('resolves user.save() in process_with_new() via User::new() constructor', () => {
@@ -774,7 +822,7 @@ describe('Rust async .await constructor binding resolution', () => {
 
   it('detects save methods in separate files', () => {
     const methods = [...getNodesByLabel(result, 'Function'), ...getNodesByLabel(result, 'Method')];
-    expect(methods.filter((m: string) => m === 'save').length).toBeGreaterThanOrEqual(2);
+    expect(methods.filter((m: string) => m === 'save').length).toBe(2);
   });
 
   it('resolves user.save() after .await to user.rs via return type of get_user()', () => {
@@ -809,3 +857,772 @@ describe('Rust async .await constructor binding resolution', () => {
     expect(wrongSave).toBeUndefined();
   });
 });
+
+// ---------------------------------------------------------------------------
+// Nullable receiver: let user: Option<User> = find_user(); user.unwrap().save()
+// Rust Option<User> — stripNullable unwraps Option wrapper to inner type.
+// ---------------------------------------------------------------------------
+
+describe('Rust nullable receiver resolution (Option<T>)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-nullable-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs, both with save functions', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.unwrap().save() to User#save via Option<User> unwrapping', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process_entities' &&
+      c.targetFilePath?.includes('user'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.unwrap().save() to Repo#save via Option<Repo> unwrapping', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process_entities' &&
+      c.targetFilePath?.includes('repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Assignment chain propagation (Phase 4.3)
+// ---------------------------------------------------------------------------
+
+describe('Rust assignment chain propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs each with a save function', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_entities' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves r_alias.save() to Repo#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_entities' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('alias.save() does NOT resolve to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.source === 'process_entities');
+    expect(saveCalls.filter(c => c.targetFilePath?.includes('user.rs')).length).toBe(1);
+    expect(saveCalls.filter(c => c.targetFilePath?.includes('repo.rs')).length).toBe(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Rust Option<User> receiver resolution — extractSimpleTypeName unwraps
+// Option<User> to "User" via NULLABLE_WRAPPER_TYPES. The variable declared
+// as Option<User> now stores "User" in TypeEnv, enabling direct receiver
+// disambiguation without chained .unwrap() inference.
+// ---------------------------------------------------------------------------
+
+describe('Rust Option<User> receiver resolution via wrapper unwrapping', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-option-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs each with a save function', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(m => m === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via Option<User> → assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_entities' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() to Repo#save alongside Option usage', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_entities' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// if let Some(user) = opt — Phase 5.2 pattern binding: unwrap Option<T>
+// `opt: Option<User>` → Option<User> is stored as "User" in TypeEnv via
+// NULLABLE_WRAPPER_TYPES. extractPatternBinding maps `user` → "User".
+// Disambiguation: User.save vs Repo.save — only User.save should be called.
+// ---------------------------------------------------------------------------
+
+describe('Rust if-let Some(x) = opt pattern binding (Phase 5.2)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-if-let-unwrap'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs each with a save function', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(f => f === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.save() inside if-let Some(user) = opt to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Rust if-let Err(e) = res pattern binding (Phase 5 review fix)
+// Result<User, AppError> → Err(e) should type e as AppError (typeArgs[1]).
+// Also tests Ok(user) in the same fixture to verify both arms work.
+// ---------------------------------------------------------------------------
+
+describe('Rust if-let Err(e) pattern binding (Phase 5 review fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-err-unwrap'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and AppError structs', () => {
+    const structs = getNodesByLabel(result, 'Struct');
+    expect(structs).toContain('User');
+    expect(structs).toContain('AppError');
+  });
+
+  it('resolves e.report() inside if-let Err(e) to AppError#report', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const reportCall = calls.find(c =>
+      c.target === 'report' &&
+      c.source === 'handle_err' &&
+      c.targetFilePath?.includes('error.rs'),
+    );
+    expect(reportCall).toBeDefined();
+  });
+
+  it('resolves user.save() inside if-let Ok(user) to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'handle_ok' &&
+      c.targetFilePath?.includes('user.rs'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('does NOT resolve e.report() to User#save (no cross-contamination)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'handle_err',
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method calls: svc.get_user().save()
+// Tests that Rust chain call resolution correctly infers the intermediate
+// receiver type from get_user()'s return type and resolves save() to User.
+// ---------------------------------------------------------------------------
+
+describe('Rust chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs, and UserService', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    expect(getNodesByLabel(result, 'Struct')).toContain('UserService');
+  });
+
+  it('detects get_user and save functions', () => {
+    const fns = getNodesByLabel(result, 'Function');
+    expect(fns).toContain('get_user');
+    expect(fns).toContain('save');
+  });
+
+  it('resolves svc.get_user().save() to User#save via chain resolution', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process_user' &&
+      c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.get_user().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process_user' &&
+      c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Rust for-loop Tier 1c: for user in &users with Vec<User> parameter
+// ---------------------------------------------------------------------------
+
+describe('Rust for-loop type resolution (Tier 1c)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-for-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs with save functions', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(f => f === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.save() in for-loop to User#save via Tier 1c', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('resolves repo.save() in for-loop to Repo#save via Tier 1c', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve repo.save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Rust match arm: match opt { Some(user) => user.save() }
+// ---------------------------------------------------------------------------
+
+describe('Rust match arm type resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-match-unwrap'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs with save functions', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(f => f === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.save() inside match Some(user) to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() in match to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('resolves repo.save() inside if-let Ok(repo) to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'check' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve repo.save() in if-let to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'check' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// for user in users.iter() — call_expression iterable resolution
+// ---------------------------------------------------------------------------
+
+describe('Rust .iter() for-loop call_expression resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-iter-for-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs with save functions', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(f => f === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.save() via users.iter() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() via repos.into_iter() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// for user in get_users() — direct call_expression iterable resolution
+// Phase 7.3: unlike rust-iter-for-loop (typed variable .iter()), this tests
+// iterating over a function call's return value directly.
+// ---------------------------------------------------------------------------
+
+describe('Rust for-loop direct call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-for-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo structs with competing save functions', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Struct')).toContain('Repo');
+    const saveFns = getNodesByLabel(result, 'Function').filter(f => f === 'save');
+    expect(saveFns.length).toBe(2);
+  });
+
+  it('resolves user.save() in for-loop over get_users() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in for-loop over get_repos() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_users' && c.targetFilePath?.includes('repo.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT resolve repo.save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process_repos' && c.targetFilePath?.includes('user.rs'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution — struct field capture
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (Rust)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects structs: Address, User', () => {
+    expect(getNodesByLabel(result, 'Struct')).toEqual(['Address', 'User']);
+  });
+
+  it('detects Property nodes for Rust struct fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking fields to structs', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(3);
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+  });
+
+  it('resolves user.address.save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(
+      e => e.target === 'save' && e.source === 'process_user',
+    );
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('models');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8B: Deep field chain resolution (3-level)
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (Rust)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects structs: Address, City, User', () => {
+    expect(getNodesByLabel(result, 'Struct')).toEqual(['Address', 'City', 'User']);
+  });
+
+  it('detects Property nodes for Rust struct fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('city');
+    expect(properties).toContain('zip_code');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(5);
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('Address → street');
+    expect(edgeSet(propEdges)).toContain('City → zip_code');
+  });
+
+  it('resolves 2-level chain: user.address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'process_user');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('models'));
+    expect(addressSave).toBeDefined();
+  });
+
+  it('resolves 3-level chain: user.address.city.get_name() → City#get_name', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'get_name' && e.source === 'process_user');
+    const cityGetName = getNameCalls.find(e => e.targetFilePath.includes('models'));
+    expect(cityGetName).toBeDefined();
+  });
+});
+
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (Rust)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(3);
+    const fieldNames = writes.map(e => e.target);
+    expect(fieldNames).toContain('name');
+    expect(fieldNames).toContain('address');
+    expect(fieldNames).toContain('score');
+    const sources = writes.map(e => e.source);
+    expect(sources).toContain('update_user');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+
+  it('emits ACCESSES write edge for compound assignment', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    const scoreWrite = writes.find(e => e.target === 'score');
+    expect(scoreWrite).toBeDefined();
+    expect(scoreWrite!.source).toBe('update_user');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): let user = get_user(); user.save()
+// ---------------------------------------------------------------------------
+
+describe('Rust call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save() to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process_user' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): get_user() → .address → .get_city() → .save()
+// ---------------------------------------------------------------------------
+
+describe('Rust method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves city.save() to City#save via method chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process_chain' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase A: Rust struct_pattern destructuring — let Point { x, y } = p
+// Each field emits a fieldAccess PendingAssignment; fixpoint resolves x/y → Vec2
+// ---------------------------------------------------------------------------
+
+describe('Rust struct_pattern destructuring resolution (Phase A)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'rust-struct-destructuring'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Point and Vec2 structs', () => {
+    const classes = getNodesByLabel(result, 'Struct');
+    expect(classes).toContain('Point');
+    expect(classes).toContain('Vec2');
+  });
+
+  it('resolves x.save() to Vec2#save via struct destructuring', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('vec2'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves both x.save() and y.save() — emits at least 1 CALLS to Vec2#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save' && c.targetFilePath.includes('vec2'));
+    // Both x and y are Vec2 — the same function, so calls may deduplicate to 1
+    expect(saveCalls.length).toBeGreaterThanOrEqual(1);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 14: Cross-file binding propagation
+// src/models.rs exports User struct with save() and get_name() methods
+// src/factory.rs exports get_user() -> User (uses crate::models::User)
+// src/main.rs uses crate::factory::get_user, calls u.save() / u.get_name()
+// → u is typed User via cross-file return type propagation
+// ---------------------------------------------------------------------------
+
+describe('Rust cross-file binding propagation', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(CROSS_FILE_FIXTURES, 'rs-cross-file'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User struct with save and get_name methods', () => {
+    expect(getNodesByLabel(result, 'Struct')).toContain('User');
+    expect(getNodesByLabel(result, 'Function')).toContain('save');
+    expect(getNodesByLabel(result, 'Function')).toContain('get_name');
+  });
+
+  it('detects get_user and process functions', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('get_user');
+    expect(getNodesByLabel(result, 'Function')).toContain('process');
+  });
+
+  it('emits IMPORTS edge from main.rs to factory.rs', () => {
+    const imports = getRelationships(result, 'IMPORTS');
+    const edge = imports.find(e =>
+      e.sourceFilePath.includes('main') && e.targetFilePath.includes('factory'),
+    );
+    expect(edge).toBeDefined();
+  });
+
+  it('resolves u.save() in process() to User#save via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves u.get_name() in process() to User#get_name via cross-file return type propagation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCall = calls.find(c =>
+      c.target === 'get_name' &&
+      c.source === 'process' &&
+      c.targetFilePath.includes('models'),
+    );
+    expect(getNameCall).toBeDefined();
+  });
+
+  it('emits HAS_METHOD edges linking save and get_name to User', () => {
+    const hasMethod = getRelationships(result, 'HAS_METHOD');
+    const saveEdge = hasMethod.find(e => e.source === 'User' && e.target === 'save');
+    const getNameEdge = hasMethod.find(e => e.source === 'User' && e.target === 'get_name');
+    expect(saveEdge).toBeDefined();
+    expect(getNameEdge).toBeDefined();
+  });
+});
diff --git a/gitnexus/test/integration/resolvers/swift.test.ts b/gitnexus/test/integration/resolvers/swift.test.ts
index 6ab8c28b6..773323044 100644
--- a/gitnexus/test/integration/resolvers/swift.test.ts
+++ b/gitnexus/test/integration/resolvers/swift.test.ts
@@ -57,7 +57,8 @@ describe.skipIf(!swiftAvailable)('Swift constructor-inferred type resolution', (
 
 // ---------------------------------------------------------------------------
 // self.save() resolves to enclosing class's own save method
-// Known issue: tree-sitter-swift has build issues on Node 22
+// Build-dep issue (NOT a feature gap): tree-sitter-swift has build issues on Node 22.
+// The self/super resolution code already exists in type-env.ts lookupInEnv (lines 56-66).
 // ---------------------------------------------------------------------------
 
 describe.skip('Swift self resolution', () => {
@@ -86,7 +87,8 @@ describe.skip('Swift self resolution', () => {
 
 // ---------------------------------------------------------------------------
 // Parent class resolution: EXTENDS + protocol conformance
-// Known issue: tree-sitter-swift has build issues on Node 22
+// Build-dep issue (NOT a feature gap): tree-sitter-swift has build issues on Node 22.
+// findEnclosingParentClassName in type-env.ts already has Swift inheritance_specifier handler.
 // ---------------------------------------------------------------------------
 
 describe.skip('Swift parent resolution', () => {
diff --git a/gitnexus/test/integration/resolvers/typescript.test.ts b/gitnexus/test/integration/resolvers/typescript.test.ts
index 8c355f8b5..a18d8ba21 100644
--- a/gitnexus/test/integration/resolvers/typescript.test.ts
+++ b/gitnexus/test/integration/resolvers/typescript.test.ts
@@ -4,7 +4,7 @@
 import { describe, it, expect, beforeAll } from 'vitest';
 import path from 'path';
 import {
-  FIXTURES, getRelationships, getNodesByLabel, edgeSet,
+  FIXTURES, getRelationships, getNodesByLabel, getNodesByLabelFull, edgeSet,
   runPipelineFromRepo, type PipelineResult,
 } from './helpers.js';
 
@@ -64,6 +64,12 @@ describe('TypeScript heritage resolution', () => {
     ]);
   });
 
+  it('emits HAS_PROPERTY edge for class fields', () => {
+    const hasProperty = getRelationships(result, 'HAS_PROPERTY');
+    expect(hasProperty.length).toBe(1);
+    expect(edgeSet(hasProperty)).toEqual(['BaseService → name']);
+  });
+
   it('no OVERRIDES edges target Property nodes', () => {
     const overrides = getRelationships(result, 'OVERRIDES');
     for (const edge of overrides) {
@@ -850,6 +856,14 @@ describe('TypeScript nullable receiver resolution (optional chaining)', () => {
     expect(userCtor).toBeDefined();
     expect(repoCtor).toBeDefined();
   });
+
+  it('emits exactly 2 save() CALLS edges (one per receiver type)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    // user?.save() → User.save + repo?.save() → Repo.save = 2 edges
+    // If nullable unwrapping fails, the resolver refuses ambiguous matches and emits 0
+    expect(saveCalls.length).toBe(2);
+  });
 });
 
 // ---------------------------------------------------------------------------
@@ -1036,3 +1050,1268 @@ describe('JavaScript qualified return type via JSDoc @returns {Promise<models.Us
   });
 });
 
+// ---------------------------------------------------------------------------
+// Assignment chain propagation (Tier 2, depth-1):
+// `const alias = u` where `u: User` → alias.save() resolves to User#save
+// ---------------------------------------------------------------------------
+
+describe('TypeScript assignment chain propagation (Tier 2)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-assignment-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('user.ts'),
+    );
+    // Positive: alias.save() must resolve to User#save
+    expect(saveCall).toBeDefined();
+    expect(saveCall!.source).toBe('processEntities');
+    // Negative: alias.save() must NOT resolve to Repo#save
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntities' && c.targetFilePath.includes('repo.ts'),
+    );
+    // rAlias.save() correctly goes to Repo — but we verify there is exactly one
+    // per-receiver resolution (user alias → User, repo alias → Repo)
+    expect(wrongCall).toBeDefined(); // rAlias.save() resolves to Repo
+  });
+
+  it('resolves rAlias.save() to Repo#save via assignment chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('repo.ts'),
+    );
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('processEntities');
+    // Negative: rAlias.save() must NOT resolve to User#save (only)
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('user.ts'),
+    );
+    expect(userSave).toBeDefined();
+    // Both resolve separately — alias → User, rAlias → Repo
+    expect(userSave!.targetFilePath).not.toBe(repoSave!.targetFilePath);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Multi-hop forward-declared chain (a → b → c) — validates that single-pass
+// in source order resolves chains deeper than depth-1.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript multi-hop assignment chain (a → b → c)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-multi-hop-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves c.save() to User#save through a → b → c chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'multiHopForward' && c.targetFilePath?.includes('user.ts'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('c.save() in multiHopForward does NOT resolve to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'multiHopForward' && c.targetFilePath?.includes('repo.ts'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves c.save() to Repo#save through a → b → c chain (Repo variant)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'multiHopRepo' && c.targetFilePath?.includes('repo.ts'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('c.save() in multiHopRepo does NOT resolve to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'multiHopRepo' && c.targetFilePath?.includes('user.ts'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Nullable type + assignment chain: stripNullable must resolve the nullable
+// union (User | null → User) before the chain propagation can work.
+// Exercises the refactored NULLABLE_KEYWORDS.has() code path.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript nullable + assignment chain combined', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-nullable-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes each with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves alias.save() to User#save when source is User | null', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'nullableChainUser' && c.targetFilePath?.includes('user.ts'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('alias.save() from User | null does NOT resolve to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.source === 'nullableChainUser' && c.targetFilePath?.includes('repo.ts'),
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves alias.save() to Repo#save when source is Repo | undefined', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'nullableChainRepo' && c.targetFilePath?.includes('repo.ts'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('resolves alias.save() to User#save when source is User | null | undefined (triple)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'tripleNullable' && c.targetFilePath?.includes('user.ts'),
+    );
+    expect(userSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Chained method call resolution: svc.getUser().save()
+// The receiver of save() is a call_expression (getUser()), not a simple identifier.
+// Resolution must walk the chain: getUser() returns User, so save() → User#save.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript chained method call resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-chain-call'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects save methods on both User and Repo', () => {
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('detects getUser method on UserService', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('getUser');
+  });
+
+  it('resolves svc.getUser().save() to User#save, NOT Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('User'),
+    );
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('Repo'),
+    );
+    expect(userSave).toBeDefined();
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Overloaded receiver: two classes with the same method name (save) must not
+// collide in the receiverKey map. The fix preserves @startIndex in the key so
+// User.save@idx1 and Repo.save@idx2 remain distinct even when the enclosing
+// scope funcName is the same.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript overloaded-receiver resolution (receiverKey collision fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-overloaded-receiver'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes, both with a save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    const saveMethods = getNodesByLabel(result, 'Method').filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.save() to User#save (models/User.ts), not Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+    expect(userSave!.source).toBe('run');
+    // Negative: must not resolve to Repo#save
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'run' && c.targetFilePath.includes('Repo'),
+    );
+    // If only one save target resolves to User (not Repo), we correctly exclude Repo
+    expect(userSave!.targetFilePath).toContain('User');
+  });
+
+  it('resolves repo.save() to Repo#save (models/Repo.ts), not User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+    expect(repoSave!.source).toBe('run');
+    expect(repoSave!.targetFilePath).toContain('Repo');
+  });
+
+  it('emits exactly 2 save() CALLS edges — one per class', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    expect(saveCalls.length).toBe(2);
+    const targets = saveCalls.map(c => c.targetFilePath).sort();
+    expect(targets[0]).toContain('Repo');
+    expect(targets[1]).toContain('User');
+  });
+
+  it('resolves constructor calls for both User and Repo', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userCtor = calls.find(c => c.target === 'User' && c.targetLabel === 'Class');
+    const repoCtor = calls.find(c => c.target === 'Repo' && c.targetLabel === 'Class');
+    expect(userCtor).toBeDefined();
+    expect(repoCtor).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Typed parameter chain: svc.getUser().save() where svc is a parameter with
+// a type annotation (not a constructor binding). Tests that the worker path
+// consults typeEnv for chain base receivers (Phase 5 review Finding 1).
+// ---------------------------------------------------------------------------
+
+describe('TypeScript typed-parameter chain call resolution (Phase 5 review fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-typed-param-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects getUser and save methods', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('getUser');
+    expect(methods).toContain('save');
+  });
+
+  it('resolves svc.getUser().save() to User#save via parameter type annotation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve svc.getUser().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('Repo'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Static chain: UserService.findUser().save() where the chain base is a class
+// name (not a variable). Tests that the serial path applies class-as-receiver
+// to chain base resolution (Phase 5 review Finding 2).
+// ---------------------------------------------------------------------------
+
+describe('TypeScript static class-name chain call resolution (Phase 5 review fix)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-static-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Repo, and UserService classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Repo');
+    expect(classes).toContain('UserService');
+  });
+
+  it('detects static findUser and instance save methods', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('findUser');
+    expect(methods).toContain('save');
+  });
+
+  it('resolves UserService.findUser().save() to User#save via class-name chain base', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve UserService.findUser().save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' &&
+      c.source === 'processUser' &&
+      c.targetFilePath.includes('Repo'),
+    );
+    expect(repoSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// TS readonly User[] for-loop: for (const user of users) with readonly User[]
+// ---------------------------------------------------------------------------
+
+describe('TypeScript readonly array for-loop resolution (Tier 1c)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-readonly-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.save() in readonly array for-of to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('user'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in readonly array for-of to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('repo'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// for (const [key, user] of entries) — destructured for-of resolution
+// ---------------------------------------------------------------------------
+
+describe('TS destructured for-of Map resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-destructured-for-of'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves user.save() in destructured for-of to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntries' && c.targetFilePath?.includes('user'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processEntries' && c.targetFilePath?.includes('repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// if (x instanceof User) { x.save() } — instanceof narrowing resolution
+// ---------------------------------------------------------------------------
+
+describe('TS instanceof narrowing resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-instanceof-narrowing'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+  });
+
+  it('resolves x.save() after instanceof to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('user'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT resolve x.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath?.includes('repo'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// this.users member access iterable: for (const user of this.users)
+// ---------------------------------------------------------------------------
+
+describe('TypeScript member access iterable for-loop', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-member-access-for-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+  });
+
+  it('resolves user.save() via this.users to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('User'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+
+  it('resolves repo.save() via this.repos to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('Repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// TypeScript class field foreach: for (const user of this.users) with class field User[]
+// ---------------------------------------------------------------------------
+
+describe('TypeScript class field foreach resolution (Phase 6.1)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-class-field-foreach'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+  });
+
+  it('resolves user.save() via class field User[] to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('user'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve user.save() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('repo'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+
+  it('resolves repo.save() via class field Map<string, Repo>.values() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('repo'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT cross-resolve repo.save() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrong = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('user'),
+    );
+    expect(wrong).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// TypeScript for-of with call_expression iterable: for (const user of getUsers())
+// Phase 7.3: call_expression iterable resolution via ReturnTypeLookup
+// ---------------------------------------------------------------------------
+
+describe('TypeScript for-of call_expression iterable resolution (Phase 7.3)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'typescript-for-of-call-expr'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes with competing save methods', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves user.save() in for-of getUsers() to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const userSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('user.ts'),
+    );
+    expect(userSave).toBeDefined();
+  });
+
+  it('resolves repo.save() in for-of getRepos() to Repo#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const repoSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('repo.ts'),
+    );
+    expect(repoSave).toBeDefined();
+  });
+
+  it('does NOT resolve user.save() to Repo#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processUsers' && c.targetFilePath?.includes('repo.ts'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+
+  it('does NOT resolve repo.save() to User#save (negative)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongSave = calls.find(c =>
+      c.target === 'save' && c.source === 'processRepos' && c.targetFilePath?.includes('user.ts'),
+    );
+    expect(wrongSave).toBeUndefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field/property type resolution (1-level)
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (TypeScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'field-types'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, Config, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'Config', 'User']);
+  });
+
+  it('detects Property nodes for typed fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('name');
+    expect(properties).toContain('city');
+  });
+
+  it('emits HAS_PROPERTY edges linking properties to classes', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(propEdges.length).toBe(4);
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('Config → DEFAULT');
+  });
+
+  it('resolves user.address.save() → Address#save via field type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save');
+    const addressSave = saveCalls.find(e => e.targetFilePath.includes('models'));
+    expect(addressSave).toBeDefined();
+    expect(addressSave!.source).toBe('processUser');
+  });
+
+  it('emits ACCESSES read edge for user.address field access in chain', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const addressReads = accesses.filter(e => e.target === 'address' && e.rel.reason === 'read');
+    expect(addressReads.length).toBe(1);
+    expect(addressReads[0].source).toBe('processUser');
+    expect(addressReads[0].targetLabel).toBe('Property');
+  });
+
+  it('emits ACCESSES read edge for Config.DEFAULT field access in chain', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const defaultReads = accesses.filter(e => e.target === 'DEFAULT' && e.rel.reason === 'read');
+    expect(defaultReads.length).toBe(1);
+    expect(defaultReads[0].source).toBe('validateConfig');
+  });
+
+  it('all ACCESSES edges have confidence 1.0 and reason read', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    for (const edge of accesses) {
+      expect(edge.rel.confidence).toBe(1.0);
+      expect(edge.rel.reason).toBe('read');
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Field type disambiguation — both User and Address have save()
+// ---------------------------------------------------------------------------
+
+describe('Field type disambiguation (TypeScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-field-type-disambig'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects both User#save and Address#save', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    const saveMethods = methods.filter(m => m === 'save');
+    expect(saveMethods.length).toBe(2);
+  });
+
+  it('resolves user.address.save() → Address#save (not User#save)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(
+      e => e.target === 'save' && e.source === 'processUser',
+    );
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('address');
+    expect(saveCalls[0].targetFilePath).not.toContain('user');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8: Parameter properties and #private fields
+// ---------------------------------------------------------------------------
+
+describe('Field type resolution (TS parameter properties)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-param-property-fields'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'User']);
+  });
+
+  it('captures constructor parameter properties as Property nodes', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('name');
+    expect(properties).toContain('address');
+  });
+
+  it('captures #private fields as Property nodes', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('#secret');
+  });
+
+  it('emits HAS_PROPERTY edges for parameter properties', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → name');
+    expect(edgeSet(propEdges)).toContain('User → address');
+  });
+
+  it('resolves user.address.save() via parameter property type', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processUser');
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('models');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase 8A: Deep field chain resolution (3-level: user.address.city.getName())
+// ---------------------------------------------------------------------------
+
+describe('Deep field chain resolution (TypeScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-deep-field-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, City, User', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'City', 'User']);
+  });
+
+  it('detects Property nodes for all typed fields', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('address');
+    expect(properties).toContain('city');
+    expect(properties).toContain('zipCode');
+  });
+
+  it('emits HAS_PROPERTY edges for nested type chain', () => {
+    const propEdges = getRelationships(result, 'HAS_PROPERTY');
+    expect(edgeSet(propEdges)).toContain('User → address');
+    expect(edgeSet(propEdges)).toContain('Address → city');
+    expect(edgeSet(propEdges)).toContain('City → zipCode');
+  });
+
+  it('resolves 2-level chain: user.address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processUser');
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('models');
+  });
+
+  it('resolves 3-level chain: user.address.city.getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processUser');
+    expect(getNameCalls.length).toBe(1);
+    expect(getNameCalls[0].targetFilePath).toContain('models');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Mixed chain resolution (field ↔ call interleaved)
+// ---------------------------------------------------------------------------
+
+describe('Mixed field+call chain resolution (TypeScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-mixed-chain'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects classes: Address, City, User, UserService', () => {
+    expect(getNodesByLabel(result, 'Class')).toEqual(['Address', 'City', 'User', 'UserService']);
+  });
+
+  it('detects Property node for Address.city field', () => {
+    const properties = getNodesByLabel(result, 'Property');
+    expect(properties).toContain('city');
+    expect(properties).toContain('address');
+  });
+
+  it('resolves call→field chain: svc.getUser().address.save() → Address#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(e => e.target === 'save' && e.source === 'processWithService');
+    expect(saveCalls.length).toBe(1);
+    expect(saveCalls[0].targetFilePath).toContain('models');
+  });
+
+  it('resolves field→call chain: user.getAddress().city.getName() → City#getName', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const getNameCalls = calls.filter(e => e.target === 'getName' && e.source === 'processWithUser');
+    expect(getNameCalls.length).toBe(1);
+    expect(getNameCalls[0].targetFilePath).toContain('models');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// ACCESSES write edges from assignment expressions
+// ---------------------------------------------------------------------------
+
+describe('Write access tracking (TypeScript)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-write-access'),
+      () => {},
+    );
+  }, 60000);
+
+  it('emits ACCESSES write edges for field assignments', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    expect(writes.length).toBe(2);
+    const nameWrite = writes.find(e => e.target === 'name');
+    const addressWrite = writes.find(e => e.target === 'address');
+    expect(nameWrite).toBeDefined();
+    expect(nameWrite!.source).toBe('updateUser');
+    expect(addressWrite).toBeDefined();
+    expect(addressWrite!.source).toBe('updateUser');
+  });
+
+  it('write ACCESSES edges have confidence 1.0', () => {
+    const accesses = getRelationships(result, 'ACCESSES');
+    const writes = accesses.filter(e => e.rel.reason === 'write');
+    for (const edge of writes) {
+      expect(edge.rel.confidence).toBe(1.0);
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Call-result variable binding (Phase 9): const user = getUser(); user.save()
+// Activates Tier 2b pendingCallResults — binds return type at TypeEnv build time.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User class with save method', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Method')).toContain('save');
+  });
+
+  it('detects getUser function', () => {
+    expect(getNodesByLabel(result, 'Function')).toContain('getUser');
+  });
+
+  it('resolves user.save() to User#save via call-result binding', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves alias.save() to User#save via call-result + copy chain', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processAlias' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// JavaScript call-result variable binding (Phase 9) via JSDoc @returns
+// ---------------------------------------------------------------------------
+
+describe('JavaScript call-result variable binding (Tier 2b)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'js-call-result-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves user.save() to User#save via call-result binding with JSDoc', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUser' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Method chain binding (Phase 9C): getUser() → .address → .getCity() → .save()
+// Unified fixpoint resolves field access + method-call-with-receiver at TypeEnv build time.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript method chain binding via unified fixpoint (Phase 9C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-method-chain-binding'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Address, City classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Address');
+    expect(classes).toContain('City');
+  });
+
+  it('resolves city.save() to City#save via 3-step chain (callResult → fieldAccess → methodCallResult)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processChain' && c.targetFilePath.includes('models')
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase A: Object destructuring — const { field } = receiver → fieldAccess PendingAssignment
+// ---------------------------------------------------------------------------
+
+describe('TypeScript object destructuring resolution (Phase A)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-object-destructuring'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User, Address classes', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('User');
+    expect(classes).toContain('Address');
+  });
+
+  it('resolves address.save() to Address#save via object destructuring', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('does NOT resolve save() to a wrong target', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCalls = calls.filter(c => c.target === 'save');
+    for (const call of saveCalls) {
+      expect(call.targetFilePath).toContain('models');
+    }
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase A: Post-fixpoint for-loop replay — iterable resolved via callResult fixpoint
+// Differs from ts-for-of-call-expression: iterable is an identifier, not inline call
+// ---------------------------------------------------------------------------
+
+describe('TypeScript post-fixpoint for-loop replay (Phase A ex-9B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-fixpoint-for-loop'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves u.save() to User#save via post-fixpoint for-loop replay', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'process' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase B: Deep MRO — walkParentChain() at depth 2 (C→B→A)
+// greet() is defined on A, accessed via C. Tests BFS depth-2 parent traversal.
+// ---------------------------------------------------------------------------
+
+describe('TypeScript grandparent method resolution via MRO (Phase B)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-grandparent-resolution'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects 3 classes in inheritance chain (A, B, C) plus Greeting', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('A');
+    expect(classes).toContain('B');
+    expect(classes).toContain('C');
+    expect(classes).toContain('Greeting');
+  });
+
+  it('emits EXTENDS edges: B→A, C→B', () => {
+    const extends_ = getRelationships(result, 'EXTENDS');
+    expect(edgeSet(extends_)).toContain('B → A');
+    expect(edgeSet(extends_)).toContain('C → B');
+  });
+
+  it('resolves c.greet().save() to Greeting#save via depth-2 MRO lookup', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.targetFilePath.includes('greeting'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves c.greet() to A#greet (method found via MRO walk)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCall = calls.find(c =>
+      c.target === 'greet' && c.targetFilePath.includes('base'),
+    );
+    expect(greetCall).toBeDefined();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Phase C: TS null-check narrowing — if (x !== null) { x.save() }
+// patternOverrides stores narrowed type for the if-body position range
+// ---------------------------------------------------------------------------
+
+describe('TypeScript null-check narrowing resolution (Phase C)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-null-check-narrowing'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects User and Repo classes', () => {
+    expect(getNodesByLabel(result, 'Class')).toContain('User');
+    expect(getNodesByLabel(result, 'Class')).toContain('Repo');
+  });
+
+  it('resolves x.save() inside !== null guard to User#save', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processStrict' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('does NOT resolve to Repo#save (no cross-contamination)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const wrongCall = calls.find(c =>
+      c.target === 'save' && c.targetLabel === 'Repo',
+    );
+    expect(wrongCall).toBeUndefined();
+  });
+
+  it('resolves x.save() in loose != null check (processLoose)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processLoose' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves x.save() in !== undefined check (processUndefined)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processUndefined' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+
+  it('resolves x.save() inside function expression null-check (processFuncExpr)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const saveCall = calls.find(c =>
+      c.target === 'save' && c.source === 'processFuncExpr' && c.targetFilePath.includes('models'),
+    );
+    expect(saveCall).toBeDefined();
+  });
+});
+
+// ── Phase P: Virtual Dispatch via Constructor Type ───────────────────────
+
+describe('TypeScript virtual dispatch via constructor type (same-file)', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-virtual-dispatch'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects Animal and Dog classes with same-file heritage', () => {
+    const classes = getNodesByLabel(result, 'Class');
+    expect(classes).toContain('Animal');
+    expect(classes).toContain('Dog');
+    const extends_ = getRelationships(result, 'EXTENDS');
+    const dogExtends = extends_.find(e => e.source === 'Dog' && e.target === 'Animal');
+    expect(dogExtends).toBeDefined();
+  });
+
+  it('detects fetchBall() as Dog-only method', () => {
+    const methods = getNodesByLabel(result, 'Method');
+    expect(methods).toContain('fetchBall');
+  });
+
+  it('resolves fetchBall() calls from run() — proves virtual dispatch override', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const fetchCalls = calls.filter(c => c.source === 'run' && c.target === 'fetchBall');
+    // animal.fetchBall() only resolves if constructorTypeMap overrides
+    // receiver from Animal → Dog. dog.fetchBall() resolves directly.
+    // Both target same nodeId → 1 CALLS edge after dedup.
+    expect(fetchCalls.length).toBe(1);
+  });
+});
+
+// ── Phase P: Overload Disambiguation via inferLiteralType ────────────────
+
+describe('TypeScript overload disambiguation via inferLiteralType', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-overload-disambiguation'),
+      () => {},
+    );
+  }, 60000);
+
+  it('detects lookup function with parameterTypes on graph node', () => {
+    const functions = getNodesByLabelFull(result, 'Function');
+    const lookupNodes = functions.filter(f => f.name === 'lookup');
+    // generateId collision → 1 graph node, first overload's parameterTypes wins
+    expect(lookupNodes.length).toBeGreaterThanOrEqual(1);
+    // At least one lookup node has parameterTypes set
+    const withParamTypes = lookupNodes.filter(n => n.properties.parameterTypes);
+    expect(withParamTypes.length).toBeGreaterThanOrEqual(1);
+  });
+
+  it('emits CALLS edges from process() → lookup() via overload disambiguation', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const lookupCalls = calls.filter(c => c.source === 'process' && c.target === 'lookup');
+    // Phase 0 (fileIndex stores both overloads) + Phase 2 (literal type matching)
+    // enables resolution where previously 2 same-arity candidates → null.
+    // Both calls resolve to same nodeId (ID collision) → 1 CALLS edge after dedup.
+    expect(lookupCalls.length).toBe(1);
+  });
+});
+
+// ── Phase P: Optional / Default Parameter Arity Resolution ───────────────
+
+describe('TypeScript optional parameter arity resolution', () => {
+  let result: PipelineResult;
+
+  beforeAll(async () => {
+    result = await runPipelineFromRepo(
+      path.join(FIXTURES, 'ts-optional-params'),
+      () => {},
+    );
+  }, 60000);
+
+  it('resolves greet("Alice") with 1 arg to greet with 2 params (1 optional)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const greetCalls = calls.filter(c => c.source === 'process' && c.target === 'greet');
+    expect(greetCalls.length).toBe(1);
+  });
+
+  it('resolves search("test") with 1 arg to search with 2 params (1 optional)', () => {
+    const calls = getRelationships(result, 'CALLS');
+    const searchCalls = calls.filter(c => c.source === 'process' && c.target === 'search');
+    expect(searchCalls.length).toBe(1);
+  });
+});
diff --git a/gitnexus/test/integration/setup-skills.test.ts b/gitnexus/test/integration/setup-skills.test.ts
index 9f60909e9..f6e3801e5 100644
--- a/gitnexus/test/integration/setup-skills.test.ts
+++ b/gitnexus/test/integration/setup-skills.test.ts
@@ -8,6 +8,8 @@ import { setupCommand } from '../../src/cli/setup.js';
 describe('setupCommand skills integration', () => {
   let tempHome: string;
   const originalHome = process.env.HOME;
+  const originalUserProfile = process.env.USERPROFILE;
+  const originalPath = process.env.PATH;
   const testId = `${Date.now()}-${process.pid}`;
   const flatSkillName = `test-flat-skill-${testId}`;
   const dirSkillName = `test-dir-skill-${testId}`;
@@ -17,6 +19,7 @@ describe('setupCommand skills integration', () => {
   beforeAll(async () => {
     tempHome = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-setup-home-'));
     process.env.HOME = tempHome;
+    process.env.USERPROFILE = tempHome;  // os.homedir() checks USERPROFILE on Windows
     await fs.mkdir(path.join(tempHome, '.cursor'), { recursive: true });
 
     // Create temporary source skills to verify both supported source layouts:
@@ -44,6 +47,8 @@ describe('setupCommand skills integration', () => {
     await fs.rm(path.join(packageSkillsRoot, `${flatSkillName}.md`), { force: true });
     await fs.rm(path.join(packageSkillsRoot, dirSkillName), { recursive: true, force: true });
     process.env.HOME = originalHome;
+    process.env.USERPROFILE = originalUserProfile;
+    process.env.PATH = originalPath;
     await fs.rm(tempHome, { recursive: true, force: true });
   });
 
@@ -82,4 +87,40 @@ describe('setupCommand skills integration', () => {
     );
     expect(nestedInstalled).toContain('Directory Nested File');
   });
+
+  it('falls back to Codex config.toml and installs skills into ~/.agents/skills when codex CLI is unavailable', async () => {
+    await fs.mkdir(path.join(tempHome, '.codex'), { recursive: true });
+    process.env.PATH = '';
+
+    await setupCommand();
+
+    const codexConfig = await fs.readFile(
+      path.join(tempHome, '.codex', 'config.toml'),
+      'utf-8',
+    );
+    expect(codexConfig).toContain('[mcp_servers.gitnexus]');
+    expect(codexConfig).toContain('gitnexus@latest');
+
+    const codexSkill = await fs.readFile(
+      path.join(tempHome, '.agents', 'skills', 'gitnexus-cli', 'SKILL.md'),
+      'utf-8',
+    );
+    expect(codexSkill).toContain('GitNexus CLI Commands');
+  });
+
+  it('does not duplicate the Codex MCP section on repeated fallback setup runs', async () => {
+    await fs.mkdir(path.join(tempHome, '.codex'), { recursive: true });
+    process.env.PATH = '';
+
+    await setupCommand();
+    await setupCommand();
+
+    const codexConfig = await fs.readFile(
+      path.join(tempHome, '.codex', 'config.toml'),
+      'utf-8',
+    );
+    const sectionMatches = codexConfig.match(/\[mcp_servers\.gitnexus\]/g) ?? [];
+
+    expect(sectionMatches).toHaveLength(1);
+  });
 });
diff --git a/gitnexus/test/integration/skills-e2e.test.ts b/gitnexus/test/integration/skills-e2e.test.ts
index 31f836179..58a98e984 100644
--- a/gitnexus/test/integration/skills-e2e.test.ts
+++ b/gitnexus/test/integration/skills-e2e.test.ts
@@ -2389,8 +2389,16 @@ export function createEntry(level: string, msg: string) {
     /* CI timeout tolerance */
     if (result1.status === null || result2.status === null) return;
 
-    expect(result1.status).toBe(0);
-    expect(result2.status).toBe(0);
+    expect(result1.status, [
+      `first analyze --skills exited with code ${result1.status}`,
+      `stdout: ${result1.stdout?.slice(0, 500)}`,
+      `stderr: ${result1.stderr?.slice(0, 500)}`,
+    ].join('\n')).toBe(0);
+    expect(result2.status, [
+      `second analyze --skills exited with code ${result2.status}`,
+      `stdout: ${result2.stdout?.slice(0, 500)}`,
+      `stderr: ${result2.stderr?.slice(0, 500)}`,
+    ].join('\n')).toBe(0);
 
     const generatedDir = path.join(tmpDir, '.claude', 'skills', 'generated');
     expect(fs.existsSync(generatedDir)).toBe(true);
diff --git a/gitnexus/test/integration/staleness-and-stability.test.ts b/gitnexus/test/integration/staleness-and-stability.test.ts
new file mode 100644
index 000000000..023ec5969
--- /dev/null
+++ b/gitnexus/test/integration/staleness-and-stability.test.ts
@@ -0,0 +1,226 @@
+/**
+ * E2E Tests: Stale Data Detection + Sequential Enrichment Stability
+ *
+ * Validates the fixes in PR #396:
+ *   1. Sequential enrichment: impact() enrichment queries run without
+ *      SIGSEGV on arm64 macOS (sequential on arm64, parallel elsewhere)
+ *   2. Consecutive tool stability: MCP server stays alive after 10+
+ *      consecutive tool calls (no stdout corruption)
+ *   3. Watchdog guard: activeQueryCount prevents premature stdout restore
+ *   4. Stale data detection: ensureInitialized() detects meta.json changes
+ *
+ * All tests share one withTestLbugDB lifecycle to avoid cross-block
+ * DB closure issues (LadybugDB's shared global DB in a single fork).
+ *
+ * Issues: #285, #290, #292, #297
+ */
+import { describe, it, expect, afterAll } from 'vitest';
+import fs from 'fs/promises';
+import path from 'path';
+import {
+  initLbug,
+  executeQuery,
+  closeLbug,
+} from '../../src/mcp/core/lbug-adapter.js';
+import { withTestLbugDB } from '../helpers/test-indexed-db.js';
+import { LOCAL_BACKEND_SEED_DATA, LOCAL_BACKEND_FTS_INDEXES } from '../fixtures/local-backend-seed.js';
+import { LocalBackend } from '../../src/mcp/local/local-backend.js';
+import { listRegisteredRepos } from '../../src/storage/repo-manager.js';
+import { vi } from 'vitest';
+
+vi.mock('../../src/storage/repo-manager.js', () => ({
+  listRegisteredRepos: vi.fn().mockResolvedValue([]),
+  cleanupOldKuzuFiles: vi.fn().mockResolvedValue({ found: false, needsReindex: false }),
+}));
+
+withTestLbugDB('staleness-and-stability', (handle) => {
+  let backend: LocalBackend;
+  let storagePath: string;
+
+  // ─── Setup ─────────────────────────────────────────────────────────
+  describe('setup', () => {
+    it('initialize backend', async () => {
+      const ext = handle as typeof handle & { _backend?: LocalBackend };
+      if (!ext._backend) throw new Error('LocalBackend not initialized');
+      backend = ext._backend;
+      storagePath = handle.tmpHandle.dbPath;
+    });
+  });
+
+  // ─── Block 1: Sequential enrichment queries (#285, #290, #292) ─────
+  describe('impact enrichment queries run without crashes', () => {
+    it('impact with enrichment completes without SIGSEGV', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'validate',
+        direction: 'upstream',
+      });
+      expect(result).not.toHaveProperty('error');
+      expect(result.impactedCount).toBeGreaterThanOrEqual(1);
+      expect(result).toHaveProperty('affected_processes');
+      expect(result).toHaveProperty('affected_modules');
+    });
+
+    it('impact with large maxDepth completes without crash', async () => {
+      const result = await backend.callTool('impact', {
+        target: 'login',
+        direction: 'downstream',
+        maxDepth: 5,
+      });
+      expect(result).toBeDefined();
+      expect(result).not.toHaveProperty('error');
+    });
+  });
+
+  // ─── Block 2: Consecutive tool call stability ──────────────────────
+  describe('MCP server stays alive after 10+ consecutive tool calls', () => {
+    it('10 consecutive cypher calls complete without stdout corruption', async () => {
+      for (let i = 0; i < 10; i++) {
+        const result = await backend.callTool('cypher', {
+          query: `MATCH (n:Function) RETURN n.name AS name LIMIT ${i + 1}`,
+        });
+        expect(result).toHaveProperty('row_count');
+        expect(result.row_count).toBeGreaterThanOrEqual(1);
+      }
+    });
+
+    it('mixed tool calls: context → impact → query → cypher cycle', async () => {
+      for (let i = 0; i < 3; i++) {
+        const ctx = await backend.callTool('context', { name: 'login' });
+        expect(ctx.status).toBe('found');
+
+        const imp = await backend.callTool('impact', {
+          target: 'validate',
+          direction: 'upstream',
+        });
+        expect(imp).not.toHaveProperty('error');
+
+        const qry = await backend.callTool('query', { query: 'login' });
+        expect(qry).not.toHaveProperty('error');
+
+        const cyp = await backend.callTool('cypher', {
+          query: 'MATCH (n:Function) RETURN COUNT(n) AS cnt',
+        });
+        expect(cyp).toHaveProperty('row_count');
+      }
+    });
+
+    it('stdout.write is still a function after all calls', () => {
+      expect(typeof process.stdout.write).toBe('function');
+    });
+  });
+
+  // ─── Block 3: Watchdog / activeQueryCount ──────────────────────────
+  describe('watchdog does not restore stdout during active queries', () => {
+    const REPO = 'watchdog-test';
+    let poolInited = false;
+
+    const ensurePool = async () => {
+      if (!poolInited) {
+        await initLbug(REPO, handle.dbPath);
+        poolInited = true;
+      }
+    };
+
+    afterAll(async () => {
+      try { await closeLbug(REPO); } catch { /* best-effort */ }
+    });
+
+    it('parallel queries complete and stdout is restored', async () => {
+      await ensurePool();
+      const queries = Array.from({ length: 4 }, (_, i) =>
+        executeQuery(REPO, `MATCH (n:Function) RETURN n.name AS name LIMIT ${i + 1}`)
+      );
+      const results = await Promise.all(queries);
+      expect(results).toHaveLength(4);
+      for (const r of results) {
+        expect(r.length).toBeGreaterThanOrEqual(1);
+      }
+    });
+
+    it('sequential queries still work', async () => {
+      await ensurePool();
+      for (let i = 0; i < 5; i++) {
+        const rows = await executeQuery(REPO, 'MATCH (n:Function) RETURN n.name');
+        expect(rows.length).toBeGreaterThanOrEqual(1);
+      }
+    });
+  });
+
+  // ─── Block 4: Stale data detection (#297) ──────────────────────────
+  // LAST: triggers closeLbug internally which may affect shared state
+  describe('stale data detection via meta.json', () => {
+    it('initial query works', async () => {
+      const result = await backend.callTool('cypher', {
+        query: 'MATCH (n:Function) RETURN n.name AS name ORDER BY n.name',
+      });
+      expect(result).toHaveProperty('row_count');
+      expect(result.row_count).toBeGreaterThanOrEqual(3);
+    });
+
+    it('detects stale index when meta.json indexedAt changes', async () => {
+      const metaPath = path.join(storagePath, 'meta.json');
+      await fs.writeFile(metaPath, JSON.stringify({
+        indexedAt: new Date(Date.now() + 60000).toISOString(),
+        lastCommit: 'new-commit-hash',
+        stats: { files: 2, nodes: 3, communities: 1, processes: 1 },
+      }));
+
+      // Next call triggers re-init. May fail but must NOT crash.
+      try {
+        const result = await backend.callTool('cypher', {
+          query: 'MATCH (n:Function) RETURN COUNT(n) AS cnt',
+        });
+        expect(result).toBeDefined();
+      } catch (err: any) {
+        expect(err.message).not.toMatch(/SIGSEGV/i);
+      }
+    });
+
+    it('throttle: no re-read within 5s window', async () => {
+      const metaPath = path.join(storagePath, 'meta.json');
+      await fs.writeFile(metaPath, JSON.stringify({
+        indexedAt: new Date(Date.now() + 120000).toISOString(),
+        lastCommit: 'another-commit',
+        stats: { files: 2, nodes: 3, communities: 1, processes: 1 },
+      }));
+
+      try {
+        const result = await backend.callTool('cypher', {
+          query: 'MATCH (n:Function) RETURN COUNT(n) AS cnt',
+        });
+        expect(result).toBeDefined();
+      } catch {
+        // No crash = success
+      }
+    });
+  });
+
+}, {
+  seed: LOCAL_BACKEND_SEED_DATA,
+  ftsIndexes: LOCAL_BACKEND_FTS_INDEXES,
+  poolAdapter: true,
+  afterSetup: async (handle) => {
+    // Write initial meta.json for staleness tests
+    const metaPath = path.join(handle.tmpHandle.dbPath, 'meta.json');
+    const initialMeta = {
+      indexedAt: new Date().toISOString(),
+      lastCommit: 'abc123',
+      stats: { files: 2, nodes: 3, communities: 1, processes: 1 },
+    };
+    await fs.writeFile(metaPath, JSON.stringify(initialMeta));
+
+    vi.mocked(listRegisteredRepos).mockResolvedValue([
+      {
+        name: 'test-repo',
+        path: '/test/repo',
+        storagePath: handle.tmpHandle.dbPath,
+        indexedAt: initialMeta.indexedAt,
+        lastCommit: 'abc123',
+        stats: { files: 2, nodes: 3, communities: 1, processes: 1 },
+      },
+    ]);
+    const backend = new LocalBackend();
+    await backend.init();
+    (handle as any)._backend = backend;
+  },
+});
diff --git a/gitnexus/test/setup.ts b/gitnexus/test/setup.ts
deleted file mode 100644
index e5336a2e6..000000000
--- a/gitnexus/test/setup.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * Vitest per-file setup file (runs inside each forked worker).
- *
- * Unref's all active handles after each test file so the event loop can
- * drain naturally. For non-native test files this is sufficient to let
- * the fork exit. For LadybugDB test files, native C++ handles may not expose
- * .unref() — CI handles this via process isolation (one vitest invocation
- * per LadybugDB test file) so the OS reclaims everything on process exit.
- *
- * IMPORTANT: We do NOT import lbug-adapter here. Importing it would load
- * the native addon even in non-LadybugDB test files, registering persistent
- * handles that prevent the fork from exiting.
- *
- * IMPORTANT: We do NOT call process.exit() here. On Linux, process.exit()
- * triggers N-API destructor hooks in the LadybugDB native addon that segfault
- * (SIGSEGV), crashing the fork before it can send results back via IPC.
- */
-import { afterAll } from 'vitest';
-
-afterAll(() => {
-  try {
-    const handles = (process as any)._getActiveHandles?.();
-    if (handles) {
-      for (const h of handles) {
-        if (typeof h.unref === 'function') h.unref();
-      }
-    }
-  } catch {}
-});
diff --git a/gitnexus/test/unit/call-processor.test.ts b/gitnexus/test/unit/call-processor.test.ts
index 36d5e9eb9..3b9b2c552 100644
--- a/gitnexus/test/unit/call-processor.test.ts
+++ b/gitnexus/test/unit/call-processor.test.ts
@@ -1,5 +1,6 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { processCallsFromExtracted, extractReturnTypeName } from '../../src/core/ingestion/call-processor.js';
+import { processCallsFromExtracted, seedCrossFileReceiverTypes } from '../../src/core/ingestion/call-processor.js';
+import { extractReturnTypeName } from '../../src/core/ingestion/type-extractors/shared.js';
 import { createResolutionContext, type ResolutionContext } from '../../src/core/ingestion/resolution-context.js';
 import { createKnowledgeGraph } from '../../src/core/graph/graph.js';
 import type { ExtractedCall, FileConstructorBindings } from '../../src/core/ingestion/workers/parse-worker.js';
@@ -476,6 +477,122 @@ describe('processCallsFromExtracted', () => {
 
   // ---- Scope-aware constructor bindings (Phase 3) ----
 
+  it('receiverKey collision: same method name in different classes does not collide', async () => {
+    // User.save@100 and Repo.save@200 are two methods named "save" in different classes.
+    // Each has a local variable "db" pointing to a different type.
+    // Without @startIndex in the key, the second binding would overwrite the first.
+    ctx.symbols.add('src/db/Database.ts', 'Database', 'Class:src/db/Database.ts:Database', 'Class');
+    ctx.symbols.add('src/db/Cache.ts', 'Cache', 'Class:src/db/Cache.ts:Cache', 'Class');
+    ctx.symbols.add('src/db/Database.ts', 'query', 'Method:src/db/Database.ts:query', 'Method', { ownerId: 'Class:src/db/Database.ts:Database' });
+    ctx.symbols.add('src/db/Cache.ts', 'query', 'Method:src/db/Cache.ts:query', 'Method', { ownerId: 'Class:src/db/Cache.ts:Cache' });
+    ctx.importMap.set('src/models/User.ts', new Set(['src/db/Database.ts']));
+    ctx.importMap.set('src/models/Repo.ts', new Set(['src/db/Cache.ts']));
+
+    // Two bindings: both enclosing scope is named "save" but at different startIndexes
+    const constructorBindings: FileConstructorBindings[] = [
+      {
+        filePath: 'src/models/User.ts',
+        bindings: [
+          // save@100: inside User.save(), db = new Database()
+          { scope: 'save@100', varName: 'db', calleeName: 'Database' },
+        ],
+      },
+      {
+        filePath: 'src/models/Repo.ts',
+        bindings: [
+          // save@200: inside Repo.save(), db = new Cache()
+          { scope: 'save@200', varName: 'db', calleeName: 'Cache' },
+        ],
+      },
+    ];
+
+    const calls: ExtractedCall[] = [
+      {
+        filePath: 'src/models/User.ts',
+        calledName: 'query',
+        sourceId: 'Method:src/models/User.ts:save',
+        receiverName: 'db',
+        callForm: 'member',
+      },
+      {
+        filePath: 'src/models/Repo.ts',
+        calledName: 'query',
+        sourceId: 'Method:src/models/Repo.ts:save',
+        receiverName: 'db',
+        callForm: 'member',
+      },
+    ];
+
+    await processCallsFromExtracted(graph, calls, ctx, undefined, constructorBindings);
+
+    const rels = graph.relationships.filter(r => r.type === 'CALLS');
+    expect(rels).toHaveLength(2);
+    const userQueryRel = rels.find(r => r.sourceId === 'Method:src/models/User.ts:save');
+    const repoQueryRel = rels.find(r => r.sourceId === 'Method:src/models/Repo.ts:save');
+    expect(userQueryRel?.targetId).toBe('Method:src/db/Database.ts:query');
+    expect(repoQueryRel?.targetId).toBe('Method:src/db/Cache.ts:query');
+  });
+
+  it('receiverKey collision: same scope funcName + same varName + same type resolves (non-ambiguous)', async () => {
+    // Two save@* scopes both bind "db" to the same type — not ambiguous, should resolve.
+    ctx.symbols.add('src/db/Database.ts', 'Database', 'Class:src/db/Database.ts:Database', 'Class');
+    ctx.symbols.add('src/db/Database.ts', 'query', 'Method:src/db/Database.ts:query', 'Method', { ownerId: 'Class:src/db/Database.ts:Database' });
+    ctx.importMap.set('src/service.ts', new Set(['src/db/Database.ts']));
+
+    const constructorBindings: FileConstructorBindings[] = [{
+      filePath: 'src/service.ts',
+      bindings: [
+        { scope: 'save@10', varName: 'db', calleeName: 'Database' },
+        { scope: 'save@50', varName: 'db', calleeName: 'Database' },
+      ],
+    }];
+
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'query',
+      sourceId: 'Method:src/service.ts:save',
+      receiverName: 'db',
+      callForm: 'member',
+    }];
+
+    await processCallsFromExtracted(graph, calls, ctx, undefined, constructorBindings);
+
+    const rels = graph.relationships.filter(r => r.type === 'CALLS');
+    expect(rels).toHaveLength(1);
+    expect(rels[0].targetId).toBe('Method:src/db/Database.ts:query');
+  });
+
+  it('receiverKey collision: same scope funcName + same varName + different types → ambiguous, no CALLS edge', async () => {
+    // Two save@* scopes in the same file bind "db" to different types — truly ambiguous.
+    ctx.symbols.add('src/db/Database.ts', 'Database', 'Class:src/db/Database.ts:Database', 'Class');
+    ctx.symbols.add('src/db/Cache.ts', 'Cache', 'Class:src/db/Cache.ts:Cache', 'Class');
+    ctx.symbols.add('src/db/Database.ts', 'query', 'Method:src/db/Database.ts:query', 'Method', { ownerId: 'Class:src/db/Database.ts:Database' });
+    ctx.symbols.add('src/db/Cache.ts', 'query', 'Method:src/db/Cache.ts:query', 'Method', { ownerId: 'Class:src/db/Cache.ts:Cache' });
+    ctx.importMap.set('src/service.ts', new Set(['src/db/Database.ts', 'src/db/Cache.ts']));
+
+    const constructorBindings: FileConstructorBindings[] = [{
+      filePath: 'src/service.ts',
+      bindings: [
+        { scope: 'save@10', varName: 'db', calleeName: 'Database' },
+        { scope: 'save@50', varName: 'db', calleeName: 'Cache' },
+      ],
+    }];
+
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'query',
+      sourceId: 'Method:src/service.ts:save',
+      receiverName: 'db',
+      callForm: 'member',
+    }];
+
+    await processCallsFromExtracted(graph, calls, ctx, undefined, constructorBindings);
+
+    // Ambiguous — different types for same funcName+varName, should not emit a CALLS edge
+    const rels = graph.relationships.filter(r => r.type === 'CALLS');
+    expect(rels).toHaveLength(0);
+  });
+
   it('scope-aware bindings: same varName in different functions resolves to correct type', async () => {
     ctx.symbols.add('src/models.ts', 'User', 'Class:src/models.ts:User', 'Class');
     ctx.symbols.add('src/models.ts', 'Repo', 'Class:src/models.ts:Repo', 'Class');
@@ -707,4 +824,211 @@ describe('extractReturnTypeName', () => {
     expect(extractReturnTypeName('CompletableFuture')).toBeUndefined();
     expect(extractReturnTypeName('Optional')).toBeUndefined();
   });
+
+  // ---- Length caps (Phase 6) ----
+
+  it('pre-cap: returns undefined when raw input exceeds 2048 characters', () => {
+    const longInput = 'A'.repeat(2049);
+    expect(extractReturnTypeName(longInput)).toBeUndefined();
+  });
+
+  it('pre-cap: accepts raw input at exactly 2048 characters (boundary)', () => {
+    // A 2048-char string of uppercase letters passes the pre-cap gate.
+    // It won't match as a valid identifier (too long for post-cap), so the
+    // result is undefined — but the pre-cap itself does NOT reject it.
+    // We test this by verifying a 2048-char type that WOULD be valid in all
+    // other respects is still returned as undefined (post-cap rejects it).
+    const atLimit = 'U' + 'x'.repeat(2047); // 2048 chars, starts with uppercase
+    // Post-cap (512) will reject this, but the pre-cap should not fire.
+    // The important assertion: no throw and the result is undefined from post-cap.
+    expect(extractReturnTypeName(atLimit)).toBeUndefined();
+  });
+
+  it('pre-cap: accepts inputs shorter than 2048 characters without rejection', () => {
+    // 'User' is well under 2048 — should resolve normally.
+    expect(extractReturnTypeName('User')).toBe('User');
+  });
+
+  it('post-cap: returns undefined when extracted type name exceeds 512 characters', () => {
+    // Construct a raw string that is under the 2048-char pre-cap but produces
+    // a final identifier longer than 512 characters after extraction.
+    // A bare uppercase identifier of 513 chars satisfies all rules except post-cap.
+    const longTypeName = 'U' + 'x'.repeat(512); // 513 chars, starts with uppercase
+    expect(extractReturnTypeName(longTypeName)).toBeUndefined();
+  });
+
+  it('post-cap: accepts extracted type name at exactly 512 characters (boundary)', () => {
+    // 512-char identifier should pass the post-cap check (> 512 rejects, not >=).
+    const atLimit = 'U' + 'x'.repeat(511); // exactly 512 chars
+    expect(extractReturnTypeName(atLimit)).toBe(atLimit);
+  });
+
+  it('post-cap: accepts normal short type names well under 512 characters', () => {
+    expect(extractReturnTypeName('HttpClient')).toBe('HttpClient');
+    expect(extractReturnTypeName('UserService')).toBe('UserService');
+  });
+});
+
+describe('seedCrossFileReceiverTypes', () => {
+  it('single-hop: imported receiver gets type from ExportedTypeMap', () => {
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'save',
+      sourceId: 'Function:src/service.ts:run',
+      receiverName: 'repo',
+      callForm: 'member',
+    }];
+
+    const namedImportMap = new Map([
+      ['src/service.ts', new Map([
+        ['repo', { sourcePath: 'src/models/repo.ts', exportedName: 'repo' }],
+      ])],
+    ]);
+
+    const exportedTypeMap = new Map([
+      ['src/models/repo.ts', new Map([
+        ['repo', 'Repo'],
+      ])],
+    ]);
+
+    const { enrichedCount } = seedCrossFileReceiverTypes(calls, namedImportMap, exportedTypeMap);
+
+    expect(enrichedCount).toBe(1);
+    expect(calls[0].receiverTypeName).toBe('Repo');
+  });
+
+  it('no-op when receiverTypeName already exists', () => {
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'save',
+      sourceId: 'Function:src/service.ts:run',
+      receiverName: 'repo',
+      receiverTypeName: 'AlreadyKnown',
+      callForm: 'member',
+    }];
+
+    const namedImportMap = new Map([
+      ['src/service.ts', new Map([
+        ['repo', { sourcePath: 'src/models/repo.ts', exportedName: 'repo' }],
+      ])],
+    ]);
+
+    const exportedTypeMap = new Map([
+      ['src/models/repo.ts', new Map([
+        ['repo', 'Repo'],
+      ])],
+    ]);
+
+    const { enrichedCount } = seedCrossFileReceiverTypes(calls, namedImportMap, exportedTypeMap);
+
+    expect(enrichedCount).toBe(0);
+    expect(calls[0].receiverTypeName).toBe('AlreadyKnown');
+  });
+
+  it('no-op for free function calls (callForm !== member)', () => {
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'doSomething',
+      sourceId: 'Function:src/service.ts:run',
+      receiverName: 'repo',
+      callForm: 'free',
+    }];
+
+    const namedImportMap = new Map([
+      ['src/service.ts', new Map([
+        ['repo', { sourcePath: 'src/models/repo.ts', exportedName: 'repo' }],
+      ])],
+    ]);
+
+    const exportedTypeMap = new Map([
+      ['src/models/repo.ts', new Map([
+        ['repo', 'Repo'],
+      ])],
+    ]);
+
+    const { enrichedCount } = seedCrossFileReceiverTypes(calls, namedImportMap, exportedTypeMap);
+
+    expect(enrichedCount).toBe(0);
+    expect(calls[0].receiverTypeName).toBeUndefined();
+  });
+
+  it('aliased imports: local name maps to exported name via binding', () => {
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/controller.ts',
+      calledName: 'find',
+      sourceId: 'Function:src/controller.ts:handle',
+      receiverName: 'myRepo',
+      callForm: 'member',
+    }];
+
+    // import { repoInstance as myRepo } from 'src/models/repo.ts'
+    const namedImportMap = new Map([
+      ['src/controller.ts', new Map([
+        ['myRepo', { sourcePath: 'src/models/repo.ts', exportedName: 'repoInstance' }],
+      ])],
+    ]);
+
+    const exportedTypeMap = new Map([
+      ['src/models/repo.ts', new Map([
+        ['repoInstance', 'Repo'],
+      ])],
+    ]);
+
+    const { enrichedCount } = seedCrossFileReceiverTypes(calls, namedImportMap, exportedTypeMap);
+
+    expect(enrichedCount).toBe(1);
+    expect(calls[0].receiverTypeName).toBe('Repo');
+  });
+
+  it('early exit when maps are empty', () => {
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'save',
+      sourceId: 'Function:src/service.ts:run',
+      receiverName: 'repo',
+      callForm: 'member',
+    }];
+
+    const { enrichedCount: countA } = seedCrossFileReceiverTypes(
+      calls,
+      new Map(),
+      new Map([['src/models/repo.ts', new Map([['repo', 'Repo']])]]),
+    );
+    expect(countA).toBe(0);
+
+    const { enrichedCount: countB } = seedCrossFileReceiverTypes(
+      calls,
+      new Map([['src/service.ts', new Map([['repo', { sourcePath: 'src/models/repo.ts', exportedName: 'repo' }]])]]),
+      new Map(),
+    );
+    expect(countB).toBe(0);
+
+    expect(calls[0].receiverTypeName).toBeUndefined();
+  });
+
+  it('no mutation when no matching exports found', () => {
+    const calls: ExtractedCall[] = [{
+      filePath: 'src/service.ts',
+      calledName: 'save',
+      sourceId: 'Function:src/service.ts:run',
+      receiverName: 'repo',
+      callForm: 'member',
+    }];
+
+    // namedImportMap has the file, but exportedTypeMap has no entry for the source path
+    const namedImportMap = new Map([
+      ['src/service.ts', new Map([
+        ['repo', { sourcePath: 'src/models/repo.ts', exportedName: 'repo' }],
+      ])],
+    ]);
+
+    const exportedTypeMap = new Map([
+      ['src/other-file.ts', new Map([['something', 'OtherType']])],
+    ]);
+
+    const { enrichedCount } = seedCrossFileReceiverTypes(calls, namedImportMap, exportedTypeMap);
+
+    expect(enrichedCount).toBe(0);
+    expect(calls[0].receiverTypeName).toBeUndefined();
+  });
 });
diff --git a/gitnexus/test/unit/call-routing.test.ts b/gitnexus/test/unit/call-routing.test.ts
new file mode 100644
index 000000000..d1efb9dde
--- /dev/null
+++ b/gitnexus/test/unit/call-routing.test.ts
@@ -0,0 +1,694 @@
+import { describe, it, expect } from 'vitest';
+import { routeRubyCall, callRouters } from '../../src/core/ingestion/call-routing.js';
+import { SupportedLanguages } from '../../src/config/supported-languages.js';
+
+// ── Mock AST node helpers ────────────────────────────────────────────────────
+
+/**
+ * Build a minimal mock tree-sitter node. Only the fields actually accessed
+ * by routeRubyCall are populated; everything else is left undefined so that
+ * accidental property reads surface as undefined (the same as a real node
+ * that lacks the field) rather than silently returning a wrong value.
+ */
+
+interface MockNode {
+  type: string;
+  text: string;
+  isNamed?: boolean;
+  startPosition?: { row: number; col?: number };
+  endPosition?: { row: number; col?: number };
+  children?: MockNode[];
+  parent?: MockNode | null;
+  previousSibling?: MockNode | null;
+  childForFieldName?: (name: string) => MockNode | undefined;
+}
+
+/** Build a string node as tree-sitter-ruby emits it: string → string_content */
+function makeStringNode(content: string): MockNode {
+  const contentNode: MockNode = { type: 'string_content', text: content };
+  return {
+    type: 'string',
+    text: `"${content}"`,
+    children: [contentNode],
+  };
+}
+
+/**
+ * Build a mock `call` node for require/require_relative with a single string
+ * argument.
+ */
+function makeRequireCallNode(path: string | null): MockNode {
+  const argChildren: MockNode[] = path !== null ? [makeStringNode(path)] : [];
+  const argList: MockNode = { type: 'argument_list', text: '', children: argChildren };
+  const node: MockNode = {
+    type: 'call',
+    text: '',
+    childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+  };
+  return node;
+}
+
+/**
+ * Build a call node where the argument list contains a string node whose
+ * string_content child is absent (simulates a non-literal string argument).
+ */
+function makeRequireCallNodeNoContent(): MockNode {
+  const stringNodeNoContent: MockNode = { type: 'string', text: '""', children: [] };
+  const argList: MockNode = { type: 'argument_list', text: '', children: [stringNodeNoContent] };
+  return {
+    type: 'call',
+    text: '',
+    childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+  };
+}
+
+/** Build a mock call node for include/extend/prepend with a chain of parents. */
+function makeHeritageCallNode(
+  argNodes: MockNode[],
+  enclosingType: 'class' | 'module' | null,
+  enclosingName: string | null,
+  extraDepth = 0,
+): MockNode {
+  const argList: MockNode = { type: 'argument_list', text: '', children: argNodes };
+  const callNode: MockNode = {
+    type: 'call',
+    text: '',
+    parent: null,
+    childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+  };
+
+  if (enclosingType === null) {
+    // No enclosing class at all — parent chain ends without a class/module node
+    const intermediate: MockNode = { type: 'body', text: '', parent: null };
+    callNode.parent = intermediate;
+    return callNode;
+  }
+
+  // Build extra intermediate nodes to test deep parent walking
+  let leaf: MockNode = callNode;
+  for (let i = 0; i < extraDepth; i++) {
+    const wrapper: MockNode = { type: 'body_statement', text: '', parent: null };
+    leaf.parent = wrapper;
+    leaf = wrapper;
+  }
+
+  const nameNode: MockNode | undefined =
+    enclosingName ? { type: 'constant', text: enclosingName } : undefined;
+
+  const classNode: MockNode = {
+    type: enclosingType,
+    text: '',
+    parent: null,
+    childForFieldName: (name: string) => (name === 'name' ? nameNode : undefined),
+  };
+  leaf.parent = classNode;
+
+  return callNode;
+}
+
+/** Build a constant arg node (used as mixin name) */
+function makeConstantArg(text: string): MockNode {
+  return { type: 'constant', text };
+}
+
+/** Build a scope_resolution arg node (e.g. Foo::Bar) */
+function makeScopeResolutionArg(text: string): MockNode {
+  return { type: 'scope_resolution', text };
+}
+
+/** Build an identifier arg that is neither constant nor scope_resolution */
+function makeIdentifierArg(text: string): MockNode {
+  return { type: 'identifier', text };
+}
+
+/** Build a simple_symbol arg (used in attr_accessor etc.) */
+function makeSimpleSymbol(name: string, row = 0): MockNode {
+  return {
+    type: 'simple_symbol',
+    text: `:${name}`,
+    startPosition: { row },
+    endPosition: { row },
+  };
+}
+
+/**
+ * Build a call node for attr_accessor/attr_reader/attr_writer with optional
+ * preceding comment siblings.
+ */
+function makeAccessorCallNode(
+  symbolArgs: MockNode[],
+  previousSiblings: MockNode[] = [],
+): MockNode {
+  const argList: MockNode = { type: 'argument_list', text: '', children: symbolArgs };
+
+  // Link previousSiblings as a chain (last element is the direct previousSibling)
+  let prevSibling: MockNode | null = null;
+  for (const s of previousSiblings) {
+    s.previousSibling = prevSibling;
+    prevSibling = s;
+  }
+
+  const callNode: MockNode = {
+    type: 'call',
+    text: '',
+    previousSibling: prevSibling,
+    childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+  };
+  return callNode;
+}
+
+/** Build a comment node (isNamed = false by default, matching real tree-sitter Ruby) */
+function makeCommentNode(text: string, named = false): MockNode {
+  return { type: 'comment', text, isNamed: named };
+}
+
+/** Build a named non-comment sibling (causes yard-scan loop to stop) */
+function makeNamedSibling(type = 'expression_statement'): MockNode {
+  return { type, text: '', isNamed: true };
+}
+
+// ── require / require_relative ───────────────────────────────────────────────
+
+describe('routeRubyCall — require / require_relative', () => {
+  it('require with a valid string path returns import with isRelative=false', () => {
+    const node = makeRequireCallNode('net/http');
+    const result = routeRubyCall('require', node);
+
+    expect(result).toEqual({ kind: 'import', importPath: 'net/http', isRelative: false });
+  });
+
+  it('require_relative without leading dot prepends "./"', () => {
+    const node = makeRequireCallNode('models/user');
+    const result = routeRubyCall('require_relative', node);
+
+    expect(result).toEqual({ kind: 'import', importPath: './models/user', isRelative: true });
+  });
+
+  it('require_relative with path already starting with "." does not double-prepend', () => {
+    const node = makeRequireCallNode('./helpers/formatter');
+    const result = routeRubyCall('require_relative', node);
+
+    expect(result).toEqual({ kind: 'import', importPath: './helpers/formatter', isRelative: true });
+  });
+
+  it('require_relative with "../" prefix is left unchanged', () => {
+    const node = makeRequireCallNode('../shared/utils');
+    const result = routeRubyCall('require_relative', node);
+
+    expect(result).toEqual({ kind: 'import', importPath: '../shared/utils', isRelative: true });
+  });
+
+  it('returns skip when there is no string_content node (non-literal argument)', () => {
+    const node = makeRequireCallNodeNoContent();
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when import path is an empty string', () => {
+    const node = makeRequireCallNode('');
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when import path contains a control character (\\x00)', () => {
+    const node = makeRequireCallNode('some\x00path');
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when import path contains a newline control character (\\n)', () => {
+    const node = makeRequireCallNode('path\ninjection');
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when import path exceeds 1024 characters', () => {
+    const longPath = 'a'.repeat(1025);
+    const node = makeRequireCallNode(longPath);
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('accepts import path of exactly 1024 characters', () => {
+    const maxPath = 'a'.repeat(1024);
+    const node = makeRequireCallNode(maxPath);
+    const result = routeRubyCall('require', node);
+    expect(result).toEqual({ kind: 'import', importPath: maxPath, isRelative: false });
+  });
+
+  it('returns skip when argument list has no string child at all', () => {
+    // argList has only a non-string child
+    const argList: MockNode = {
+      type: 'argument_list',
+      text: '',
+      children: [{ type: 'identifier', text: 'MY_CONST' }],
+    };
+    const node: MockNode = {
+      type: 'call',
+      text: '',
+      childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+    };
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when childForFieldName is absent (undefined callNode fields)', () => {
+    // callNode has no childForFieldName method at all
+    const node: MockNode = { type: 'call', text: '' };
+    expect(routeRubyCall('require', node)).toEqual({ kind: 'skip' });
+  });
+});
+
+// ── include / extend / prepend ───────────────────────────────────────────────
+
+describe('routeRubyCall — include / extend / prepend', () => {
+  it('include with a single constant arg inside a class returns heritage', () => {
+    const node = makeHeritageCallNode([makeConstantArg('Serializable')], 'class', 'User');
+    const result = routeRubyCall('include', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'User', mixinName: 'Serializable', heritageKind: 'include' }],
+    });
+  });
+
+  it('extend with a scope_resolution arg (Foo::Bar) returns heritage', () => {
+    const node = makeHeritageCallNode([makeScopeResolutionArg('ActiveSupport::Concern')], 'class', 'Post');
+    const result = routeRubyCall('extend', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'Post', mixinName: 'ActiveSupport::Concern', heritageKind: 'extend' }],
+    });
+  });
+
+  it('prepend records heritageKind as "prepend"', () => {
+    const node = makeHeritageCallNode([makeConstantArg('Instrumented')], 'class', 'Service');
+    const result = routeRubyCall('prepend', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'Service', mixinName: 'Instrumented', heritageKind: 'prepend' }],
+    });
+  });
+
+  it('include inside a module (not a class) still resolves enclosing name', () => {
+    const node = makeHeritageCallNode([makeConstantArg('Helpers')], 'module', 'ApplicationHelper');
+    const result = routeRubyCall('include', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'ApplicationHelper', mixinName: 'Helpers', heritageKind: 'include' }],
+    });
+  });
+
+  it('include with multiple constant args produces one item per arg', () => {
+    const args = [makeConstantArg('Mod1'), makeConstantArg('Mod2'), makeConstantArg('Mod3')];
+    const node = makeHeritageCallNode(args, 'class', 'MyClass');
+    const result = routeRubyCall('include', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [
+        { enclosingClass: 'MyClass', mixinName: 'Mod1', heritageKind: 'include' },
+        { enclosingClass: 'MyClass', mixinName: 'Mod2', heritageKind: 'include' },
+        { enclosingClass: 'MyClass', mixinName: 'Mod3', heritageKind: 'include' },
+      ],
+    });
+  });
+
+  it('returns skip when no enclosing class or module is found in parent chain', () => {
+    const node = makeHeritageCallNode([makeConstantArg('Mod')], null, null);
+    expect(routeRubyCall('include', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when enclosing class node has no name child', () => {
+    // nameNode is undefined — childForFieldName('name') returns undefined
+    const argList: MockNode = { type: 'argument_list', text: '', children: [makeConstantArg('Mod')] };
+    const classNode: MockNode = {
+      type: 'class',
+      text: '',
+      parent: null,
+      childForFieldName: (_name: string) => undefined,
+    };
+    const bodyNode: MockNode = { type: 'body', text: '', parent: classNode };
+    const callNode: MockNode = {
+      type: 'call',
+      text: '',
+      parent: bodyNode,
+      childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+    };
+    expect(routeRubyCall('include', callNode)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when arg list contains only non-constant/non-scope_resolution args', () => {
+    const node = makeHeritageCallNode([makeIdentifierArg('some_var')], 'class', 'Foo');
+    expect(routeRubyCall('include', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when arg list is empty', () => {
+    const node = makeHeritageCallNode([], 'class', 'Foo');
+    expect(routeRubyCall('include', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('walks nested scopes to find the nearest enclosing class', () => {
+    // callNode is 5 levels deep inside a class body
+    const node = makeHeritageCallNode([makeConstantArg('DeepMixin')], 'class', 'DeepClass', 5);
+    const result = routeRubyCall('include', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'DeepClass', mixinName: 'DeepMixin', heritageKind: 'include' }],
+    });
+  });
+
+  it('returns skip when parent depth exceeds MAX_PARENT_DEPTH (50)', () => {
+    // Build a chain of 51 intermediate nodes with no class/module in it
+    const argList: MockNode = {
+      type: 'argument_list',
+      text: '',
+      children: [makeConstantArg('Mod')],
+    };
+    const callNode: MockNode = {
+      type: 'call',
+      text: '',
+      parent: null,
+      childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+    };
+
+    let current: MockNode = callNode;
+    // Create 51 parents — all plain body nodes, never a class/module
+    for (let i = 0; i < 51; i++) {
+      const parent: MockNode = { type: 'body_statement', text: '', parent: null };
+      current.parent = parent;
+      current = parent;
+    }
+
+    expect(routeRubyCall('include', callNode)).toEqual({ kind: 'skip' });
+  });
+
+  it('finds class at exactly depth 50 (boundary — must succeed)', () => {
+    // 49 plain wrappers, then the class at depth 50
+    const argList: MockNode = {
+      type: 'argument_list',
+      text: '',
+      children: [makeConstantArg('BoundaryMixin')],
+    };
+    const callNode: MockNode = {
+      type: 'call',
+      text: '',
+      parent: null,
+      childForFieldName: (name: string) => (name === 'arguments' ? argList : undefined),
+    };
+
+    let leaf: MockNode = callNode;
+    for (let i = 0; i < 49; i++) {
+      const wrapper: MockNode = { type: 'body_statement', text: '', parent: null };
+      leaf.parent = wrapper;
+      leaf = wrapper;
+    }
+
+    const nameNode: MockNode = { type: 'constant', text: 'BoundaryClass' };
+    const classNode: MockNode = {
+      type: 'class',
+      text: '',
+      parent: null,
+      childForFieldName: (name: string) => (name === 'name' ? nameNode : undefined),
+    };
+    leaf.parent = classNode;
+
+    const result = routeRubyCall('include', callNode);
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'BoundaryClass', mixinName: 'BoundaryMixin', heritageKind: 'include' }],
+    });
+  });
+
+  it('skips non-constant args mixed with constant args, collecting only constants', () => {
+    const args = [
+      makeIdentifierArg('local_var'),
+      makeConstantArg('ValidMixin'),
+      makeIdentifierArg('another_var'),
+    ];
+    const node = makeHeritageCallNode(args, 'class', 'Foo');
+    const result = routeRubyCall('include', node);
+
+    expect(result).toEqual({
+      kind: 'heritage',
+      items: [{ enclosingClass: 'Foo', mixinName: 'ValidMixin', heritageKind: 'include' }],
+    });
+  });
+});
+
+// ── attr_accessor / attr_reader / attr_writer ────────────────────────────────
+
+describe('routeRubyCall — attr_accessor / attr_reader / attr_writer', () => {
+  it('attr_accessor with a single symbol returns a property item', () => {
+    const node = makeAccessorCallNode([makeSimpleSymbol('name', 5)]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toEqual({
+      kind: 'properties',
+      items: [{ propName: 'name', accessorType: 'attr_accessor', startLine: 5, endLine: 5 }],
+    });
+  });
+
+  it('attr_reader sets accessorType to "attr_reader"', () => {
+    const node = makeAccessorCallNode([makeSimpleSymbol('age', 3)]);
+    const result = routeRubyCall('attr_reader', node);
+
+    expect(result).toEqual({
+      kind: 'properties',
+      items: [{ propName: 'age', accessorType: 'attr_reader', startLine: 3, endLine: 3 }],
+    });
+  });
+
+  it('attr_writer sets accessorType to "attr_writer"', () => {
+    const node = makeAccessorCallNode([makeSimpleSymbol('email', 7)]);
+    const result = routeRubyCall('attr_writer', node);
+
+    expect(result).toEqual({
+      kind: 'properties',
+      items: [{ propName: 'email', accessorType: 'attr_writer', startLine: 7, endLine: 7 }],
+    });
+  });
+
+  it('strips leading colon from symbol text', () => {
+    // makeSimpleSymbol already prefixes with ':', this validates the slice(1) branch
+    const symNode: MockNode = {
+      type: 'simple_symbol',
+      text: ':title',
+      startPosition: { row: 2 },
+      endPosition: { row: 2 },
+    };
+    const node = makeAccessorCallNode([symNode]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({ kind: 'properties', items: [{ propName: 'title' }] });
+  });
+
+  it('handles symbol text without colon prefix (no double-strip)', () => {
+    // Simulate a symbol whose text does NOT start with ':'
+    const symNode: MockNode = {
+      type: 'simple_symbol',
+      text: 'status',
+      startPosition: { row: 1 },
+      endPosition: { row: 1 },
+    };
+    const node = makeAccessorCallNode([symNode]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({ kind: 'properties', items: [{ propName: 'status' }] });
+  });
+
+  it('multiple symbols produce one item each', () => {
+    const args = [makeSimpleSymbol('first_name', 10), makeSimpleSymbol('last_name', 10), makeSimpleSymbol('dob', 10)];
+    const node = makeAccessorCallNode(args);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toEqual({
+      kind: 'properties',
+      items: [
+        { propName: 'first_name', accessorType: 'attr_accessor', startLine: 10, endLine: 10 },
+        { propName: 'last_name', accessorType: 'attr_accessor', startLine: 10, endLine: 10 },
+        { propName: 'dob',        accessorType: 'attr_accessor', startLine: 10, endLine: 10 },
+      ],
+    });
+  });
+
+  it('extracts simple YARD @return [Type] from preceding comment', () => {
+    const comment = makeCommentNode('# @return [Address]');
+    const node = makeAccessorCallNode([makeSimpleSymbol('address', 20)], [comment]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({
+      kind: 'properties',
+      items: [{ propName: 'address', declaredType: 'Address' }],
+    });
+  });
+
+  it('extracts only the leading type name from compound YARD type (Array<User> → "Array")', () => {
+    // The regex captures "Array<User>"; the simple match grabs the first uppercase word "Array"
+    const comment = makeCommentNode('# @return [Array<User>]');
+    const node = makeAccessorCallNode([makeSimpleSymbol('users', 15)], [comment]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({
+      kind: 'properties',
+      items: [{ declaredType: 'Array' }],
+    });
+  });
+
+  it('extracts type from YARD comment with extra whitespace inside brackets', () => {
+    const comment = makeCommentNode('#  @return [  Integer  ]');
+    const node = makeAccessorCallNode([makeSimpleSymbol('count', 8)], [comment]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({
+      kind: 'properties',
+      items: [{ declaredType: 'Integer' }],
+    });
+  });
+
+  it('does not set declaredType when no YARD comment precedes the call', () => {
+    const node = makeAccessorCallNode([makeSimpleSymbol('score', 12)]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({ kind: 'properties', items: [{ propName: 'score' }] });
+    const item = (result as any).items[0];
+    expect(item.declaredType).toBeUndefined();
+  });
+
+  it('does not set declaredType when comment has no @return annotation', () => {
+    const comment = makeCommentNode('# This accessor stores the user name');
+    const node = makeAccessorCallNode([makeSimpleSymbol('user_name', 9)], [comment]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    const item = (result as any).items[0];
+    expect(item.declaredType).toBeUndefined();
+  });
+
+  it('does not set declaredType when YARD type starts with lowercase (not ^[A-Z])', () => {
+    // e.g. "@return [string]" — lowercase first char fails the simple = raw.match(/^([A-Z]\w*)/)
+    const comment = makeCommentNode('# @return [string]');
+    const node = makeAccessorCallNode([makeSimpleSymbol('label', 4)], [comment]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    const item = (result as any).items[0];
+    expect(item.declaredType).toBeUndefined();
+  });
+
+  it('stops sibling scan at a non-comment named sibling before reaching a comment', () => {
+    // Ordered as [comment, namedSibling] — namedSibling is the direct previousSibling,
+    // so the scan hits it first and stops before reading the comment
+    const yardComment = makeCommentNode('# @return [User]');
+    const named = makeNamedSibling();
+    const node = makeAccessorCallNode([makeSimpleSymbol('owner', 6)], [yardComment, named]);
+    // named is last in the array → becomes direct previousSibling
+    const result = routeRubyCall('attr_accessor', node);
+
+    const item = (result as any).items[0];
+    expect(item.declaredType).toBeUndefined();
+  });
+
+  it('continues past unnamed (non-named) siblings to find a YARD comment', () => {
+    // An unnamed whitespace/punctuation node between the comment and the call
+    const unnamedNode: MockNode = { type: 'newline', text: '\n', isNamed: false };
+    const comment = makeCommentNode('# @return [Order]');
+    // siblings in order oldest→newest; the last becomes the direct previousSibling
+    const node = makeAccessorCallNode([makeSimpleSymbol('order', 30)], [comment, unnamedNode]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({
+      kind: 'properties',
+      items: [{ declaredType: 'Order' }],
+    });
+  });
+
+  it('returns skip when arg list contains no simple_symbol nodes', () => {
+    // Only an identifier node — not a symbol
+    const identArg: MockNode = { type: 'identifier', text: 'some_var' };
+    const node = makeAccessorCallNode([identArg]);
+    expect(routeRubyCall('attr_accessor', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('returns skip when arg list is empty', () => {
+    const node = makeAccessorCallNode([]);
+    expect(routeRubyCall('attr_accessor', node)).toEqual({ kind: 'skip' });
+  });
+
+  it('records correct startLine and endLine from symbol node positions', () => {
+    const sym: MockNode = {
+      type: 'simple_symbol',
+      text: ':created_at',
+      startPosition: { row: 42 },
+      endPosition: { row: 42 },
+    };
+    const node = makeAccessorCallNode([sym]);
+    const result = routeRubyCall('attr_accessor', node);
+
+    expect(result).toMatchObject({
+      kind: 'properties',
+      items: [{ startLine: 42, endLine: 42 }],
+    });
+  });
+});
+
+// ── default case ─────────────────────────────────────────────────────────────
+
+describe('routeRubyCall — default (unknown method name)', () => {
+  it('returns {kind: "call"} for an arbitrary method name', () => {
+    const node: MockNode = { type: 'call', text: '' };
+    expect(routeRubyCall('some_method', node)).toEqual({ kind: 'call' });
+  });
+
+  it('returns {kind: "call"} for an empty method name string', () => {
+    const node: MockNode = { type: 'call', text: '' };
+    expect(routeRubyCall('', node)).toEqual({ kind: 'call' });
+  });
+
+  it('returns {kind: "call"} for a realistic method name (save, render, etc.)', () => {
+    const node: MockNode = { type: 'call', text: '' };
+    expect(routeRubyCall('render', node)).toEqual({ kind: 'call' });
+    expect(routeRubyCall('save', node)).toEqual({ kind: 'call' });
+    expect(routeRubyCall('destroy', node)).toEqual({ kind: 'call' });
+  });
+});
+
+// ── callRouters dispatch table ────────────────────────────────────────────────
+
+describe('callRouters dispatch table', () => {
+  it('non-Ruby languages return null (noRouting passthrough)', () => {
+    const dummyNode = { type: 'call', text: '' };
+    const nonRubyLanguages: SupportedLanguages[] = [
+      SupportedLanguages.JavaScript,
+      SupportedLanguages.TypeScript,
+      SupportedLanguages.Python,
+      SupportedLanguages.Java,
+      SupportedLanguages.Kotlin,
+      SupportedLanguages.Go,
+      SupportedLanguages.Rust,
+      SupportedLanguages.CSharp,
+      SupportedLanguages.PHP,
+      SupportedLanguages.Swift,
+      SupportedLanguages.CPlusPlus,
+      SupportedLanguages.C,
+    ];
+    for (const lang of nonRubyLanguages) {
+      expect(callRouters[lang]('require', dummyNode)).toBeNull();
+    }
+  });
+
+  it('Ruby router is routeRubyCall (delegates correctly for require)', () => {
+    const node = makeRequireCallNode('json');
+    const result = callRouters[SupportedLanguages.Ruby]('require', node);
+    expect(result).toEqual({ kind: 'import', importPath: 'json', isRelative: false });
+  });
+
+  it('Ruby router returns {kind: "call"} for an unknown method name', () => {
+    const node: MockNode = { type: 'call', text: '' };
+    const result = callRouters[SupportedLanguages.Ruby]('render', node);
+    expect(result).toEqual({ kind: 'call' });
+  });
+
+  it('callRouters covers every SupportedLanguages value (no missing key)', () => {
+    const allLanguages = Object.values(SupportedLanguages) as SupportedLanguages[];
+    for (const lang of allLanguages) {
+      expect(typeof callRouters[lang]).toBe('function');
+    }
+  });
+});
diff --git a/gitnexus/test/unit/cli-commands.test.ts b/gitnexus/test/unit/cli-commands.test.ts
index 54923ca2b..81d1c90dc 100644
--- a/gitnexus/test/unit/cli-commands.test.ts
+++ b/gitnexus/test/unit/cli-commands.test.ts
@@ -24,7 +24,7 @@ describe('CLI commands', () => {
       const pkg = await import('../../package.json', { with: { type: 'json' } });
       expect(pkg.default.scripts.test).toBeDefined();
       expect(pkg.default.scripts['test:integration']).toBeDefined();
-      expect(pkg.default.scripts['test:all']).toBeDefined();
+      expect(pkg.default.scripts['test:unit']).toBeDefined();
     });
 
     it('has build script', async () => {
diff --git a/gitnexus/test/unit/eval-formatters.test.ts b/gitnexus/test/unit/eval-formatters.test.ts
index 81fb72d5f..4d288fcd4 100644
--- a/gitnexus/test/unit/eval-formatters.test.ts
+++ b/gitnexus/test/unit/eval-formatters.test.ts
@@ -147,7 +147,34 @@ describe('formatContextResult', () => {
 
 describe('formatImpactResult', () => {
   it('returns error message for error input', () => {
-    expect(formatImpactResult({ error: 'bad request' })).toBe('Error: bad request');
+    expect(formatImpactResult({ error: 'bad request' })).toContain('Error: bad request');
+  });
+
+  it('returns error with suggestion when provided', () => {
+    const result = formatImpactResult({
+      error: 'Impact analysis failed',
+      suggestion: 'Try gitnexus context <symbol> as a fallback',
+    });
+    expect(result).toContain('Error: Impact analysis failed');
+    expect(result).toContain('Suggestion: Try gitnexus context');
+  });
+
+  it('shows partial warning when traversal was interrupted', () => {
+    const result = formatImpactResult({
+      target: { kind: 'Function', name: 'foo' },
+      direction: 'upstream',
+      impactedCount: 2,
+      partial: true,
+      byDepth: {
+        1: [
+          { type: 'Function', name: 'caller1', filePath: 'src/a.ts', relationType: 'CALLS', confidence: 1 },
+          { type: 'Function', name: 'caller2', filePath: 'src/b.ts', relationType: 'CALLS', confidence: 1 },
+        ],
+      },
+    });
+    expect(result).toContain('Partial results');
+    expect(result).toContain('caller1');
+    expect(result).toContain('caller2');
   });
 
   it('handles zero impact', () => {
diff --git a/gitnexus/test/unit/extract-element-type-from-string.test.ts b/gitnexus/test/unit/extract-element-type-from-string.test.ts
new file mode 100644
index 000000000..4d642428e
--- /dev/null
+++ b/gitnexus/test/unit/extract-element-type-from-string.test.ts
@@ -0,0 +1,165 @@
+import { describe, it, expect } from 'vitest';
+import { extractElementTypeFromString } from '../../src/core/ingestion/type-extractors/shared.js';
+
+describe('extractElementTypeFromString', () => {
+  describe('array suffix (TypeScript / Java / C#)', () => {
+    it('User[] → User', () => {
+      expect(extractElementTypeFromString('User[]')).toBe('User');
+    });
+
+    it('string[] → string', () => {
+      expect(extractElementTypeFromString('string[]')).toBe('string');
+    });
+
+    it('int[] → int', () => {
+      expect(extractElementTypeFromString('int[]')).toBe('int');
+    });
+  });
+
+  describe('Go slice prefix', () => {
+    it('[]User → User', () => {
+      expect(extractElementTypeFromString('[]User')).toBe('User');
+    });
+
+    it('[]string → string', () => {
+      expect(extractElementTypeFromString('[]string')).toBe('string');
+    });
+  });
+
+  describe('Swift array sugar', () => {
+    it('[User] → User', () => {
+      expect(extractElementTypeFromString('[User]')).toBe('User');
+    });
+
+    it('[String] → String', () => {
+      expect(extractElementTypeFromString('[String]')).toBe('String');
+    });
+  });
+
+  describe('generic angle-bracket containers', () => {
+    it('Array<User> → User', () => {
+      expect(extractElementTypeFromString('Array<User>')).toBe('User');
+    });
+
+    it('Vec<User> → User (Rust)', () => {
+      expect(extractElementTypeFromString('Vec<User>')).toBe('User');
+    });
+
+    it('vector<User> → User (C++)', () => {
+      expect(extractElementTypeFromString('vector<User>')).toBe('User');
+    });
+
+    it('Set<User> → User', () => {
+      expect(extractElementTypeFromString('Set<User>')).toBe('User');
+    });
+
+    it('List<User> → User', () => {
+      expect(extractElementTypeFromString('List<User>')).toBe('User');
+    });
+
+    it('IEnumerable<User> → User (C#)', () => {
+      expect(extractElementTypeFromString('IEnumerable<User>')).toBe('User');
+    });
+  });
+
+  describe('Python subscript-style generics', () => {
+    it('List[User] → User', () => {
+      expect(extractElementTypeFromString('List[User]')).toBe('User');
+    });
+
+    it('Set[User] → User', () => {
+      expect(extractElementTypeFromString('Set[User]')).toBe('User');
+    });
+  });
+
+  describe('multi-argument generics — default returns last (value) arg', () => {
+    it('Map<String, User> → User (default: last/value arg)', () => {
+      expect(extractElementTypeFromString('Map<String, User>')).toBe('User');
+    });
+
+    it('Map<String, User> → String (pos=first: key arg)', () => {
+      expect(extractElementTypeFromString('Map<String, User>', 'first')).toBe('String');
+    });
+
+    it('Map<String, List<User>> → undefined (last arg is nested generic)', () => {
+      expect(extractElementTypeFromString('Map<String, List<User>>')).toBeUndefined();
+    });
+
+    it('Map<String, List<User>> → String (pos=first: key arg)', () => {
+      expect(extractElementTypeFromString('Map<String, List<User>>', 'first')).toBe('String');
+    });
+
+    it('Dict[str, User] → User (default: last/value arg, Python)', () => {
+      expect(extractElementTypeFromString('Dict[str, User]')).toBe('User');
+    });
+
+    it('Dict[str, User] → str (pos=first: key arg, Python)', () => {
+      expect(extractElementTypeFromString('Dict[str, User]', 'first')).toBe('str');
+    });
+  });
+
+  describe('nested generics as element type — returns undefined', () => {
+    it('Array<List<User>> → undefined (element is itself generic)', () => {
+      // The element "List<User>" is not a plain word, so return undefined.
+      expect(extractElementTypeFromString('Array<List<User>>')).toBeUndefined();
+    });
+
+    it('Vec<Option<User>> → undefined (element is itself generic)', () => {
+      expect(extractElementTypeFromString('Vec<Option<User>>')).toBeUndefined();
+    });
+  });
+
+  describe('cross-bracket nesting (bracket depth fix)', () => {
+    it('Dict[str, List[int]] → undefined (default: last arg is nested generic)', () => {
+      expect(extractElementTypeFromString('Dict[str, List[int]]')).toBeUndefined();
+    });
+
+    it('Dict[str, List[int]] → str (pos=first: key arg)', () => {
+      expect(extractElementTypeFromString('Dict[str, List[int]]', 'first')).toBe('str');
+    });
+
+    it('Map<String, List<User>> → undefined (default: last arg is nested generic)', () => {
+      expect(extractElementTypeFromString('Map<String, List<User>>')).toBeUndefined();
+    });
+
+    it('Map<String, List<User>> → String (pos=first: key arg)', () => {
+      expect(extractElementTypeFromString('Map<String, List<User>>', 'first')).toBe('String');
+    });
+
+    it('mismatched close bracket at depth 0 → undefined', () => {
+      // openChar is '<' but first close at depth 0 is ']' — malformed
+      expect(extractElementTypeFromString('Array<int]')).toBeUndefined();
+    });
+  });
+
+  describe('edge cases — return undefined', () => {
+    it('empty string → undefined', () => {
+      expect(extractElementTypeFromString('')).toBeUndefined();
+    });
+
+    it('plain type name (no container) → undefined', () => {
+      expect(extractElementTypeFromString('User')).toBeUndefined();
+    });
+
+    it('bare angle bracket with no close → undefined (malformed)', () => {
+      expect(extractElementTypeFromString('Array<User')).toBeUndefined();
+    });
+
+    it('bare [] prefix with spaces only → undefined', () => {
+      expect(extractElementTypeFromString('[]')).toBeUndefined();
+    });
+
+    it('empty array suffix → undefined', () => {
+      expect(extractElementTypeFromString('[]')).toBeUndefined();
+    });
+
+    it('[] suffix with no base → undefined', () => {
+      expect(extractElementTypeFromString('[]')).toBeUndefined();
+    });
+
+    it('empty Swift sugar [] → undefined', () => {
+      // starts with '[' and ends with ']' but inner is empty
+      expect(extractElementTypeFromString('[ ]')).toBeUndefined();
+    });
+  });
+});
diff --git a/gitnexus/test/unit/framework-detection.test.ts b/gitnexus/test/unit/framework-detection.test.ts
index e81aed1c6..94ed5194a 100644
--- a/gitnexus/test/unit/framework-detection.test.ts
+++ b/gitnexus/test/unit/framework-detection.test.ts
@@ -140,6 +140,11 @@ describe('detectFrameworkFromPath', () => {
       expect(result).not.toBeNull();
       expect(result!.entryPointMultiplier).toBe(3.0);
     });
+
+    it('does NOT treat Go helper files under cmd/ as entry points', () => {
+      expect(detectFrameworkFromPath('cmd/server/internal/util.go')).toBeNull();
+      expect(detectFrameworkFromPath('cmd/foo/config/setup.go')).toBeNull();
+    });
   });
 
   describe('Rust frameworks', () => {
@@ -299,8 +304,14 @@ describe('detectFrameworkFromAST', () => {
     expect(result!.framework).toBe('laravel');
   });
 
-  it('returns null for unsupported language', () => {
-    expect(detectFrameworkFromAST('rust', '#[get("/")]')).toBeNull();
+  it('detects Actix-web route attributes in Rust', () => {
+    const result = detectFrameworkFromAST('rust', '#[get("/")]');
+    expect(result).not.toBeNull();
+    expect(result!.framework).toBe('actix-web');
+  });
+
+  it('returns null for language with no matching pattern', () => {
+    expect(detectFrameworkFromAST('c', 'int main() { return 0; }')).toBeNull();
   });
 
   it('is case-insensitive', () => {
@@ -313,8 +324,9 @@ describe('FRAMEWORK_AST_PATTERNS', () => {
   it('has patterns for all expected frameworks', () => {
     const expectedFrameworks = [
       'nestjs', 'express', 'fastapi', 'flask', 'spring', 'jaxrs',
-      'aspnet', 'go-http', 'laravel', 'actix', 'axum', 'rocket',
-      'uikit', 'swiftui', 'combine',
+      'aspnet', 'go-http', 'gin', 'echo', 'fiber', 'go-grpc',
+      'laravel', 'actix', 'axum', 'rocket', 'tokio', 'qt',
+      'uikit', 'swiftui', 'vapor', 'rails', 'sinatra',
     ];
     for (const fw of expectedFrameworks) {
       expect(FRAMEWORK_AST_PATTERNS).toHaveProperty(fw);
diff --git a/gitnexus/test/unit/ignore-service.test.ts b/gitnexus/test/unit/ignore-service.test.ts
index c1bdc78e9..8866b548b 100644
--- a/gitnexus/test/unit/ignore-service.test.ts
+++ b/gitnexus/test/unit/ignore-service.test.ts
@@ -1,5 +1,8 @@
-import { describe, it, expect } from 'vitest';
-import { shouldIgnorePath } from '../../src/config/ignore-service.js';
+import { describe, it, expect, beforeAll, afterAll, vi } from 'vitest';
+import fs from 'fs/promises';
+import path from 'path';
+import os from 'os';
+import { shouldIgnorePath, isHardcodedIgnoredDirectory, loadIgnoreRules, createIgnoreFilter } from '../../src/config/ignore-service.js';
 
 describe('shouldIgnorePath', () => {
   describe('version control directories', () => {
@@ -135,3 +138,222 @@ describe('shouldIgnorePath', () => {
     });
   });
 });
+
+describe('isHardcodedIgnoredDirectory', () => {
+  it('returns true for known ignored directories', () => {
+    expect(isHardcodedIgnoredDirectory('node_modules')).toBe(true);
+    expect(isHardcodedIgnoredDirectory('.git')).toBe(true);
+    expect(isHardcodedIgnoredDirectory('dist')).toBe(true);
+    expect(isHardcodedIgnoredDirectory('__pycache__')).toBe(true);
+  });
+
+  it('returns false for source directories', () => {
+    expect(isHardcodedIgnoredDirectory('src')).toBe(false);
+    expect(isHardcodedIgnoredDirectory('lib')).toBe(false);
+    expect(isHardcodedIgnoredDirectory('app')).toBe(false);
+    expect(isHardcodedIgnoredDirectory('local')).toBe(false);
+  });
+});
+
+describe('loadIgnoreRules', () => {
+  let tmpDir: string;
+
+  beforeAll(async () => {
+    tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-ignore-test-'));
+  });
+
+  afterAll(async () => {
+    await fs.rm(tmpDir, { recursive: true, force: true });
+  });
+
+  it('returns null when no ignore files exist', async () => {
+    const result = await loadIgnoreRules(tmpDir);
+    expect(result).toBeNull();
+  });
+
+  it('parses .gitignore file', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), 'data/\nlogs/\n');
+    const ig = await loadIgnoreRules(tmpDir);
+    expect(ig).not.toBeNull();
+    expect(ig!.ignores('data/file.txt')).toBe(true);
+    expect(ig!.ignores('logs/app.log')).toBe(true);
+    expect(ig!.ignores('src/index.ts')).toBe(false);
+    await fs.unlink(path.join(tmpDir, '.gitignore'));
+  });
+
+  it('parses .gitnexusignore file', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitnexusignore'), 'vendor/\n*.test.ts\n');
+    const ig = await loadIgnoreRules(tmpDir);
+    expect(ig).not.toBeNull();
+    expect(ig!.ignores('vendor/lib.js')).toBe(true);
+    expect(ig!.ignores('src/app.test.ts')).toBe(true);
+    expect(ig!.ignores('src/app.ts')).toBe(false);
+    await fs.unlink(path.join(tmpDir, '.gitnexusignore'));
+  });
+
+  it('combines both files', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), 'data/\n');
+    await fs.writeFile(path.join(tmpDir, '.gitnexusignore'), 'vendor/\n');
+    const ig = await loadIgnoreRules(tmpDir);
+    expect(ig).not.toBeNull();
+    expect(ig!.ignores('data/file.txt')).toBe(true);
+    expect(ig!.ignores('vendor/lib.js')).toBe(true);
+    expect(ig!.ignores('src/index.ts')).toBe(false);
+    await fs.unlink(path.join(tmpDir, '.gitignore'));
+    await fs.unlink(path.join(tmpDir, '.gitnexusignore'));
+  });
+
+  it('handles comments and blank lines', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), '# comment\n\ndata/\n\n# another comment\n');
+    const ig = await loadIgnoreRules(tmpDir);
+    expect(ig).not.toBeNull();
+    expect(ig!.ignores('data/file.txt')).toBe(true);
+    expect(ig!.ignores('src/index.ts')).toBe(false);
+    await fs.unlink(path.join(tmpDir, '.gitignore'));
+  });
+});
+
+describe('createIgnoreFilter', () => {
+  let tmpDir: string;
+
+  beforeAll(async () => {
+    tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-filter-test-'));
+  });
+
+  afterAll(async () => {
+    await fs.rm(tmpDir, { recursive: true, force: true });
+  });
+
+  it('creates a filter with ignored and childrenIgnored methods', async () => {
+    const filter = await createIgnoreFilter(tmpDir);
+    expect(typeof filter.ignored).toBe('function');
+    expect(typeof filter.childrenIgnored).toBe('function');
+  });
+
+  it('childrenIgnored returns true for hardcoded directories', async () => {
+    const filter = await createIgnoreFilter(tmpDir);
+    // Simulate a Path-like object
+    const mockPath = { name: 'node_modules', relative: () => 'node_modules' } as any;
+    expect(filter.childrenIgnored(mockPath)).toBe(true);
+
+    const srcPath = { name: 'src', relative: () => 'src' } as any;
+    expect(filter.childrenIgnored(srcPath)).toBe(false);
+  });
+
+  it('childrenIgnored returns true for gitignored directories', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), 'local/\n');
+    const filter = await createIgnoreFilter(tmpDir);
+
+    const localPath = { name: 'local', relative: () => 'local' } as any;
+    expect(filter.childrenIgnored(localPath)).toBe(true);
+
+    const srcPath = { name: 'src', relative: () => 'src' } as any;
+    expect(filter.childrenIgnored(srcPath)).toBe(false);
+
+    await fs.unlink(path.join(tmpDir, '.gitignore'));
+  });
+
+  it('childrenIgnored returns true for bare-name directory patterns (no trailing slash)', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), 'local\n');
+    const filter = await createIgnoreFilter(tmpDir);
+
+    const localPath = { name: 'local', relative: () => 'local' } as any;
+    expect(filter.childrenIgnored(localPath)).toBe(true);
+
+    const srcPath = { name: 'src', relative: () => 'src' } as any;
+    expect(filter.childrenIgnored(srcPath)).toBe(false);
+
+    await fs.unlink(path.join(tmpDir, '.gitignore'));
+  });
+
+  it('ignored returns true for file-glob patterns like *.log', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), '*.log\n');
+    const filter = await createIgnoreFilter(tmpDir);
+
+    const logPath = { name: 'app.log', relative: () => 'app.log' } as any;
+    expect(filter.ignored(logPath)).toBe(true);
+
+    const tsPath = { name: 'index.ts', relative: () => 'src/index.ts' } as any;
+    expect(filter.ignored(tsPath)).toBe(false);
+
+    await fs.unlink(path.join(tmpDir, '.gitignore'));
+  });
+});
+
+describe('loadIgnoreRules — error handling', () => {
+  let tmpDir: string;
+
+  beforeAll(async () => {
+    tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-err-test-'));
+  });
+
+  afterAll(async () => {
+    await fs.rm(tmpDir, { recursive: true, force: true });
+  });
+
+  it.skipIf(process.platform === 'win32')('warns on EACCES but does not throw', async () => {
+    const gitignorePath = path.join(tmpDir, '.gitignore');
+    await fs.writeFile(gitignorePath, 'data/\n');
+    await fs.chmod(gitignorePath, 0o000);
+
+    const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => {});
+    const result = await loadIgnoreRules(tmpDir);
+    // Should still return (null or partial), not throw
+    expect(result).toBeNull();
+    expect(warnSpy).toHaveBeenCalledWith(expect.stringContaining('.gitignore'));
+
+    warnSpy.mockRestore();
+    await fs.chmod(gitignorePath, 0o644);
+    await fs.unlink(gitignorePath);
+  });
+});
+
+describe('loadIgnoreRules — GITNEXUS_NO_GITIGNORE env var', () => {
+  let tmpDir: string;
+
+  beforeAll(async () => {
+    tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-noignore-test-'));
+  });
+
+  afterAll(async () => {
+    await fs.rm(tmpDir, { recursive: true, force: true });
+  });
+
+  it('skips .gitignore when GITNEXUS_NO_GITIGNORE is set', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitignore'), 'data/\n');
+
+    const original = process.env.GITNEXUS_NO_GITIGNORE;
+    process.env.GITNEXUS_NO_GITIGNORE = '1';
+    try {
+      const ig = await loadIgnoreRules(tmpDir);
+      // .gitignore should be skipped — no rules loaded
+      expect(ig).toBeNull();
+    } finally {
+      if (original === undefined) {
+        delete process.env.GITNEXUS_NO_GITIGNORE;
+      } else {
+        process.env.GITNEXUS_NO_GITIGNORE = original;
+      }
+      await fs.unlink(path.join(tmpDir, '.gitignore'));
+    }
+  });
+
+  it('still reads .gitnexusignore when GITNEXUS_NO_GITIGNORE is set', async () => {
+    await fs.writeFile(path.join(tmpDir, '.gitnexusignore'), 'vendor/\n');
+
+    const original = process.env.GITNEXUS_NO_GITIGNORE;
+    process.env.GITNEXUS_NO_GITIGNORE = '1';
+    try {
+      const ig = await loadIgnoreRules(tmpDir);
+      expect(ig).not.toBeNull();
+      expect(ig!.ignores('vendor/lib.js')).toBe(true);
+    } finally {
+      if (original === undefined) {
+        delete process.env.GITNEXUS_NO_GITIGNORE;
+      } else {
+        process.env.GITNEXUS_NO_GITIGNORE = original;
+      }
+      await fs.unlink(path.join(tmpDir, '.gitnexusignore'));
+    }
+  });
+});
diff --git a/gitnexus/test/unit/import-processor.test.ts b/gitnexus/test/unit/import-processor.test.ts
index e41a51688..220264332 100644
--- a/gitnexus/test/unit/import-processor.test.ts
+++ b/gitnexus/test/unit/import-processor.test.ts
@@ -48,8 +48,8 @@ describe('buildImportResolutionContext', () => {
   });
 
   it('creates a suffix index for O(1) lookups', () => {
-    expect(ctx.suffixIndex).toBeDefined();
-    expect(typeof ctx.suffixIndex.get).toBe('function');
+    expect(ctx.index).toBeDefined();
+    expect(typeof ctx.index.get).toBe('function');
   });
 
   it('initializes empty resolve cache', () => {
@@ -65,22 +65,22 @@ describe('buildImportResolutionContext', () => {
 
   describe('suffix index', () => {
     it('resolves file by suffix', () => {
-      const result = ctx.suffixIndex.get('utils.ts');
+      const result = ctx.index.get('utils.ts');
       expect(result).toBeDefined();
     });
 
     it('resolves file by full path', () => {
-      const result = ctx.suffixIndex.get('src/index.ts');
+      const result = ctx.index.get('src/index.ts');
       expect(result).toBeDefined();
     });
 
     it('resolves nested component path', () => {
-      const result = ctx.suffixIndex.get('components/Button.tsx');
+      const result = ctx.index.get('components/Button.tsx');
       expect(result).toBeDefined();
     });
 
     it('returns undefined for non-existent suffix', () => {
-      const result = ctx.suffixIndex.get('nonexistent.ts');
+      const result = ctx.index.get('nonexistent.ts');
       expect(result).toBeUndefined();
     });
   });
diff --git a/gitnexus/test/unit/import-resolution.test.ts b/gitnexus/test/unit/import-resolution.test.ts
new file mode 100644
index 000000000..a486ac389
--- /dev/null
+++ b/gitnexus/test/unit/import-resolution.test.ts
@@ -0,0 +1,149 @@
+/**
+ * Unit tests for import-resolution.ts
+ *
+ * Coverage notes:
+ * - `preprocessImportPath` is tested directly below (no tree-sitter required for most paths).
+ * - Rust scoped grouped import logic (`resolveRustImportDispatch`) requires a live file system
+ *   and ResolveCtx — that path is covered by test/integration/resolvers/rust.test.ts.
+ * - PHP `use function` / `use const` filtering (via `extractPhpNamedBindings`) requires
+ *   tree-sitter PHP nodes — covered by test/integration/resolvers/php.test.ts.
+ */
+
+import { describe, it, expect } from 'vitest';
+import { preprocessImportPath } from '../../src/core/ingestion/import-resolution.js';
+import { SupportedLanguages } from '../../src/config/supported-languages.js';
+
+// ---------------------------------------------------------------------------
+// Minimal SyntaxNode stub — only the fields preprocessImportPath touches.
+// For non-Kotlin languages preprocessImportPath never reads the node, so an
+// empty stub satisfies the type requirement without loading tree-sitter.
+// ---------------------------------------------------------------------------
+
+function makeNode(overrides: Partial<{ childCount: number; child: (i: number) => any }> = {}): any {
+  return {
+    childCount: overrides.childCount ?? 0,
+    child: overrides.child ?? (() => null),
+  };
+}
+
+// ---------------------------------------------------------------------------
+// preprocessImportPath — universal cleaning behaviour
+// ---------------------------------------------------------------------------
+
+describe('preprocessImportPath', () => {
+  describe('quote and bracket stripping', () => {
+    it('strips double quotes from a bare module path', () => {
+      const node = makeNode();
+      expect(preprocessImportPath('"foo"', node, SupportedLanguages.TypeScript)).toBe('foo');
+    });
+
+    it('strips single quotes from a bare module path', () => {
+      const node = makeNode();
+      expect(preprocessImportPath("'bar/baz'", node, SupportedLanguages.JavaScript)).toBe('bar/baz');
+    });
+
+    it('strips angle brackets from a C-style include path', () => {
+      const node = makeNode();
+      expect(preprocessImportPath('<stdio.h>', node, SupportedLanguages.C)).toBe('stdio.h');
+    });
+
+    it('strips mixed quote and angle bracket characters', () => {
+      const node = makeNode();
+      // Pathological input — all stripped characters removed
+      expect(preprocessImportPath('"<hello>"', node, SupportedLanguages.TypeScript)).toBe('hello');
+    });
+  });
+
+  describe('null returns for invalid inputs', () => {
+    it('returns null for an empty string (after cleaning)', () => {
+      const node = makeNode();
+      // Only quote characters — cleaned result is empty string
+      expect(preprocessImportPath('""', node, SupportedLanguages.TypeScript)).toBeNull();
+    });
+
+    it('returns null for a string containing control characters', () => {
+      const node = makeNode();
+      // \x01 is a control character that passes the length check but fails the regex guard
+      expect(preprocessImportPath('foo\x01bar', node, SupportedLanguages.Rust)).toBeNull();
+    });
+
+    it('returns null for a string containing a null byte', () => {
+      const node = makeNode();
+      expect(preprocessImportPath('foo\x00bar', node, SupportedLanguages.Go)).toBeNull();
+    });
+
+    it('returns null for a path exceeding 2048 characters', () => {
+      const node = makeNode();
+      const longPath = 'a'.repeat(2049);
+      expect(preprocessImportPath(longPath, node, SupportedLanguages.Python)).toBeNull();
+    });
+
+    it('accepts a path of exactly 2048 characters', () => {
+      const node = makeNode();
+      const maxPath = 'a'.repeat(2048);
+      expect(preprocessImportPath(maxPath, node, SupportedLanguages.Python)).toBe(maxPath);
+    });
+  });
+
+  describe('Kotlin wildcard pass-through', () => {
+    it('delegates to appendKotlinWildcard when language is Kotlin — no wildcard child', () => {
+      // Node with no children -> appendKotlinWildcard returns the path unchanged
+      const node = makeNode({ childCount: 0 });
+      const result = preprocessImportPath('com.example.models', node, SupportedLanguages.Kotlin);
+      // Without a wildcard_import child the path is returned as-is
+      expect(result).toBe('com.example.models');
+    });
+
+    it('delegates to appendKotlinWildcard when language is Kotlin — wildcard_import child present', () => {
+      // Simulate a node that has a wildcard_import child at index 0
+      const wildcardChild = { type: 'wildcard_import' };
+      const node = makeNode({
+        childCount: 1,
+        child: (i: number) => (i === 0 ? wildcardChild : null),
+      });
+      const result = preprocessImportPath('com.example.models', node, SupportedLanguages.Kotlin);
+      // appendKotlinWildcard appends .* when the wildcard_import child is found
+      expect(result).toBe('com.example.models.*');
+    });
+  });
+
+  describe('non-Kotlin languages are returned unchanged (after cleaning)', () => {
+    it('returns the cleaned path for Rust without modification', () => {
+      const node = makeNode();
+      expect(preprocessImportPath('"crate::models"', node, SupportedLanguages.Rust)).toBe('crate::models');
+    });
+
+    it('returns the cleaned path for PHP without modification', () => {
+      const node = makeNode();
+      expect(preprocessImportPath('"App\\\\Models\\\\User"', node, SupportedLanguages.PHP)).toBe('App\\\\Models\\\\User');
+    });
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Rust scoped grouped import logic (resolveRustImportDispatch)
+// ---------------------------------------------------------------------------
+// The dispatch function requires a live ResolveCtx with file lists — unit
+// testing it without a file system would duplicate the integration fixtures.
+// The following comment documents what the integration tests verify:
+//
+//   test/integration/resolvers/rust.test.ts covers:
+//   - Top-level grouped:  use {crate::a, crate::b}
+//   - Scoped grouped:     use crate::models::{User, Repo}
+//   - Alias stripping:    use crate::models::{User, Repo as R} -> resolves User + Repo
+//   - Prefix fallback:    when no individual items resolve, resolves the prefix path
+//
+// The ::{  detection and alias-stripping logic lives in resolveRustImportDispatch()
+// at import-resolution.ts lines 328-344.
+
+// ---------------------------------------------------------------------------
+// PHP use function / use const filtering (extractPhpNamedBindings)
+// ---------------------------------------------------------------------------
+// extractPhpNamedBindings requires live tree-sitter PHP SyntaxNode objects.
+// The filtering of `use function` and `use const` declarations is covered by:
+//
+//   test/integration/resolvers/php.test.ts
+//
+// which runs the full ingestion pipeline over PHP fixture repositories and
+// asserts that function/const use-declarations do not produce spurious IMPORTS
+// edges to non-existent class files.
diff --git a/gitnexus/test/unit/language-skip.test.ts b/gitnexus/test/unit/language-skip.test.ts
new file mode 100644
index 000000000..21d3e8f2f
--- /dev/null
+++ b/gitnexus/test/unit/language-skip.test.ts
@@ -0,0 +1,48 @@
+import { describe, it, expect } from 'vitest';
+import { isLanguageAvailable, loadLanguage } from '../../src/core/tree-sitter/parser-loader.js';
+import { SupportedLanguages } from '../../src/config/supported-languages.js';
+
+describe('isLanguageAvailable', () => {
+  it('returns true for installed languages', () => {
+    expect(isLanguageAvailable(SupportedLanguages.TypeScript)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.JavaScript)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.Python)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.Java)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.Go)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.Rust)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.PHP)).toBe(true);
+    expect(isLanguageAvailable(SupportedLanguages.Ruby)).toBe(true);
+  });
+
+  it('returns false for fabricated language values', () => {
+    expect(isLanguageAvailable('erlang' as SupportedLanguages)).toBe(false);
+    expect(isLanguageAvailable('haskell' as SupportedLanguages)).toBe(false);
+  });
+
+  it('handles Swift based on optional dependency availability', () => {
+    // Swift is optional — result depends on whether tree-sitter-swift is installed
+    const result = isLanguageAvailable(SupportedLanguages.Swift);
+    expect(typeof result).toBe('boolean');
+    // Either way, it should not throw
+  });
+
+  it('handles Kotlin based on optional dependency availability', () => {
+    // Kotlin is now optional — result depends on whether tree-sitter-kotlin is installed
+    const result = isLanguageAvailable(SupportedLanguages.Kotlin);
+    expect(typeof result).toBe('boolean');
+    // Either way, it should not throw
+  });
+});
+
+describe('Kotlin optional dependency', () => {
+  it('handles Kotlin loading gracefully', async () => {
+    // Kotlin is optional — it either loads successfully or throws an error
+    try {
+      await loadLanguage(SupportedLanguages.Kotlin);
+      // If it succeeds, tree-sitter-kotlin is installed
+    } catch (e: any) {
+      // If it fails, it should be because tree-sitter-kotlin is not installed
+      expect(e.message).toContain('Unsupported language');
+    }
+  });
+});
diff --git a/gitnexus/test/unit/method-signature.test.ts b/gitnexus/test/unit/method-signature.test.ts
index ccd03b4ba..b6190c742 100644
--- a/gitnexus/test/unit/method-signature.test.ts
+++ b/gitnexus/test/unit/method-signature.test.ts
@@ -140,6 +140,29 @@ describe('extractMethodSignature', () => {
       const sig = extractMethodSignature(methodNode);
       expect(sig.parameterCount).toBe(0);
     });
+
+    it('extracts parameterTypes for Java overloaded methods', () => {
+      parser.setLanguage(Java);
+      const code = `class Svc {
+  public User lookup(int id) { return null; }
+  public User lookup(String name) { return null; }
+  public void process(int code, String msg) {}
+}`;
+      const tree = parser.parse(code);
+      const classBody = tree.rootNode.child(0)!.childForFieldName('body')!;
+
+      const sig0 = extractMethodSignature(classBody.namedChild(0)!);
+      expect(sig0.parameterCount).toBe(1);
+      expect(sig0.parameterTypes).toEqual(['int']);
+
+      const sig1 = extractMethodSignature(classBody.namedChild(1)!);
+      expect(sig1.parameterCount).toBe(1);
+      expect(sig1.parameterTypes).toEqual(['String']);
+
+      const sig2 = extractMethodSignature(classBody.namedChild(2)!);
+      expect(sig2.parameterCount).toBe(2);
+      expect(sig2.parameterTypes).toEqual(['int', 'String']);
+    });
   });
 
   describe('Kotlin', () => {
@@ -174,6 +197,24 @@ describe('extractMethodSignature', () => {
       const sig = extractMethodSignature(functionNode);
       expect(sig.parameterCount).toBe(0);
     });
+
+    it('extracts parameterTypes for Kotlin overloaded functions', () => {
+      parser.setLanguage(Kotlin);
+      const code = `class Svc {
+  fun lookup(id: Int): User? { return null }
+  fun lookup(name: String): User? { return null }
+}`;
+      const tree = parser.parse(code);
+      const classBody = tree.rootNode.child(0)!.namedChild(1)!;
+
+      const sig0 = extractMethodSignature(classBody.namedChild(0)!);
+      expect(sig0.parameterCount).toBe(1);
+      expect(sig0.parameterTypes).toEqual(['Int']);
+
+      const sig1 = extractMethodSignature(classBody.namedChild(1)!);
+      expect(sig1.parameterCount).toBe(1);
+      expect(sig1.parameterTypes).toEqual(['String']);
+    });
   });
 
   describe('C++', () => {
@@ -200,6 +241,21 @@ describe('extractMethodSignature', () => {
       const sig = extractMethodSignature(functionNode);
       expect(sig.parameterCount).toBe(0);
     });
+
+    it('extracts parameterTypes for C++ overloaded functions', () => {
+      parser.setLanguage(CPP);
+      const code = `User* lookup(int id) { return nullptr; }
+User* lookup(string name) { return nullptr; }`;
+      const tree = parser.parse(code);
+
+      const sig0 = extractMethodSignature(tree.rootNode.namedChild(0)!);
+      expect(sig0.parameterCount).toBe(1);
+      expect(sig0.parameterTypes).toEqual(['int']);
+
+      const sig1 = extractMethodSignature(tree.rootNode.namedChild(1)!);
+      expect(sig1.parameterCount).toBe(1);
+      expect(sig1.parameterTypes).toEqual(['string']);
+    });
   });
 
   describe('C#', () => {
@@ -217,6 +273,24 @@ describe('extractMethodSignature', () => {
       expect(sig.parameterCount).toBe(2);
     });
 
+    it('extracts parameterTypes for C# overloaded methods', () => {
+      parser.setLanguage(CSharp);
+      const code = `class Svc {
+  public User Lookup(int id) { return null; }
+  public User Lookup(string name) { return null; }
+}`;
+      const tree = parser.parse(code);
+      const classBody = tree.rootNode.child(0)!.childForFieldName('body')!;
+
+      const sig0 = extractMethodSignature(classBody.namedChild(0)!);
+      expect(sig0.parameterCount).toBe(1);
+      expect(sig0.parameterTypes).toEqual(['int']);
+
+      const sig1 = extractMethodSignature(classBody.namedChild(1)!);
+      expect(sig1.parameterCount).toBe(1);
+      expect(sig1.parameterTypes).toEqual(['string']);
+    });
+
     it('handles C# method with no params', () => {
       parser.setLanguage(CSharp);
       const code = `class Foo {
diff --git a/gitnexus/test/unit/mro-processor.test.ts b/gitnexus/test/unit/mro-processor.test.ts
index 78ca0bf14..2e4d04a59 100644
--- a/gitnexus/test/unit/mro-processor.test.ts
+++ b/gitnexus/test/unit/mro-processor.test.ts
@@ -292,19 +292,19 @@ describe('computeMRO', () => {
       addExtends(graph, 'Child', 'ParentA');
       addExtends(graph, 'Child', 'ParentB');
 
-      // Add Property nodes (same name 'name') to both parents via HAS_METHOD
+      // Add Property nodes (same name 'name') to both parents via HAS_PROPERTY
       const propA = generateId('Property', 'ParentA.name');
       graph.addNode({ id: propA, label: 'Property', properties: { name: 'name', filePath: 'src/ParentA.ts' } });
       graph.addRelationship({
-        id: generateId('HAS_METHOD', `${parentA}->${propA}`),
-        sourceId: parentA, targetId: propA, type: 'HAS_METHOD', confidence: 1.0, reason: '',
+        id: generateId('HAS_PROPERTY', `${parentA}->${propA}`),
+        sourceId: parentA, targetId: propA, type: 'HAS_PROPERTY', confidence: 1.0, reason: '',
       });
 
       const propB = generateId('Property', 'ParentB.name');
       graph.addNode({ id: propB, label: 'Property', properties: { name: 'name', filePath: 'src/ParentB.ts' } });
       graph.addRelationship({
-        id: generateId('HAS_METHOD', `${parentB}->${propB}`),
-        sourceId: parentB, targetId: propB, type: 'HAS_METHOD', confidence: 1.0, reason: '',
+        id: generateId('HAS_PROPERTY', `${parentB}->${propB}`),
+        sourceId: parentB, targetId: propB, type: 'HAS_PROPERTY', confidence: 1.0, reason: '',
       });
 
       const result = computeMRO(graph);
@@ -328,19 +328,19 @@ describe('computeMRO', () => {
       const methodA = addMethod(graph, 'PA', 'doWork');
       addMethod(graph, 'PB', 'doWork');
 
-      // Property collision (should NOT trigger OVERRIDES)
+      // Property collision (should NOT trigger OVERRIDES — properties use HAS_PROPERTY, not HAS_METHOD)
       const propA = generateId('Property', 'PA.id');
       graph.addNode({ id: propA, label: 'Property', properties: { name: 'id', filePath: 'src/PA.ts' } });
       graph.addRelationship({
-        id: generateId('HAS_METHOD', `${parentA}->${propA}`),
-        sourceId: parentA, targetId: propA, type: 'HAS_METHOD', confidence: 1.0, reason: '',
+        id: generateId('HAS_PROPERTY', `${parentA}->${propA}`),
+        sourceId: parentA, targetId: propA, type: 'HAS_PROPERTY', confidence: 1.0, reason: '',
       });
 
       const propB = generateId('Property', 'PB.id');
       graph.addNode({ id: propB, label: 'Property', properties: { name: 'id', filePath: 'src/PB.ts' } });
       graph.addRelationship({
-        id: generateId('HAS_METHOD', `${parentB}->${propB}`),
-        sourceId: parentB, targetId: propB, type: 'HAS_METHOD', confidence: 1.0, reason: '',
+        id: generateId('HAS_PROPERTY', `${parentB}->${propB}`),
+        sourceId: parentB, targetId: propB, type: 'HAS_PROPERTY', confidence: 1.0, reason: '',
       });
 
       const result = computeMRO(graph);
diff --git a/gitnexus/test/unit/schema.test.ts b/gitnexus/test/unit/schema.test.ts
index 15f2a9832..75235f0e4 100644
--- a/gitnexus/test/unit/schema.test.ts
+++ b/gitnexus/test/unit/schema.test.ts
@@ -40,7 +40,7 @@ describe('LadybugDB Schema', () => {
 
     it('has expected total count', () => {
       // 9 core + 18 multi-language = 27
-      expect(NODE_TABLES).toHaveLength(27);
+      expect(NODE_TABLES).toHaveLength(28);
     });
   });
 
@@ -122,11 +122,11 @@ describe('LadybugDB Schema', () => {
 
     it('has all FROM/TO pairs needed for HAS_METHOD edges', () => {
       // HAS_METHOD sources: Class, Interface, Struct, Trait, Impl, Record
-      // HAS_METHOD targets: Method, Constructor, Property
+      // HAS_METHOD targets: Method, Constructor (Property is now HAS_PROPERTY)
       const sources = ['Class', 'Interface'];
       const backtickSources = ['Struct', 'Trait', 'Impl', 'Record'];
       const targets = ['Method'];
-      const backtickTargets = ['Constructor', 'Property'];
+      const backtickTargets = ['Constructor'];
 
       // Non-backtick source → non-backtick target
       for (const src of sources) {
@@ -164,7 +164,7 @@ describe('LadybugDB Schema', () => {
 
   describe('schema query ordering', () => {
     it('NODE_SCHEMA_QUERIES has correct count', () => {
-      expect(NODE_SCHEMA_QUERIES).toHaveLength(27);
+      expect(NODE_SCHEMA_QUERIES).toHaveLength(28);
     });
 
     it('REL_SCHEMA_QUERIES has one relation table', () => {
@@ -173,7 +173,7 @@ describe('LadybugDB Schema', () => {
 
     it('SCHEMA_QUERIES includes all node + rel + embedding schemas', () => {
       // 27 node + 1 rel + 1 embedding = 29
-      expect(SCHEMA_QUERIES).toHaveLength(29);
+      expect(SCHEMA_QUERIES).toHaveLength(30);
     });
 
     it('node schemas come before relation schemas in SCHEMA_QUERIES', () => {
diff --git a/gitnexus/test/unit/security.test.ts b/gitnexus/test/unit/security.test.ts
index b8e83c560..7464aa9f5 100644
--- a/gitnexus/test/unit/security.test.ts
+++ b/gitnexus/test/unit/security.test.ts
@@ -10,12 +10,11 @@
  */
 import { describe, it, expect } from 'vitest';
 import {
-  CYPHER_WRITE_RE,
   VALID_RELATION_TYPES,
   VALID_NODE_LABELS,
-  isWriteQuery,
   isTestFilePath,
 } from '../../src/mcp/local/local-backend.js';
+import { CYPHER_WRITE_RE, isWriteQuery } from '../../src/mcp/core/lbug-adapter.js';
 
 // ─── Write-operation blocking (CYPHER_WRITE_RE) ──────────────────────
 
@@ -96,12 +95,16 @@ describe('isWriteQuery', () => {
 // ─── Relation type allowlist ──────────────────────────────────────────
 
 describe('VALID_RELATION_TYPES', () => {
-  it('contains exactly the expected 4 types', () => {
-    expect(VALID_RELATION_TYPES.size).toBe(4);
+  it('contains exactly the expected 8 types', () => {
+    expect(VALID_RELATION_TYPES.size).toBe(8);
     expect(VALID_RELATION_TYPES.has('CALLS')).toBe(true);
     expect(VALID_RELATION_TYPES.has('IMPORTS')).toBe(true);
     expect(VALID_RELATION_TYPES.has('EXTENDS')).toBe(true);
     expect(VALID_RELATION_TYPES.has('IMPLEMENTS')).toBe(true);
+    expect(VALID_RELATION_TYPES.has('HAS_METHOD')).toBe(true);
+    expect(VALID_RELATION_TYPES.has('HAS_PROPERTY')).toBe(true);
+    expect(VALID_RELATION_TYPES.has('OVERRIDES')).toBe(true);
+    expect(VALID_RELATION_TYPES.has('ACCESSES')).toBe(true);
   });
 
   it('rejects invalid relation types', () => {
diff --git a/gitnexus/test/unit/setup-codex.test.ts b/gitnexus/test/unit/setup-codex.test.ts
new file mode 100644
index 000000000..9a6650861
--- /dev/null
+++ b/gitnexus/test/unit/setup-codex.test.ts
@@ -0,0 +1,103 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import fs from 'fs/promises';
+import os from 'os';
+import path from 'path';
+
+const execFileMock = vi.fn((...args: any[]) => {
+  const callback = args.at(-1);
+  if (typeof callback === 'function') {
+    callback(null, '', '');
+  }
+});
+
+vi.mock('child_process', () => ({
+  execFile: execFileMock,
+}));
+
+describe('setupCommand codex execution', () => {
+  let tempHome: string;
+  let originalHome: string | undefined;
+  let originalUserProfile: string | undefined;
+  let platformDescriptor: PropertyDescriptor | undefined;
+
+  const setPlatform = (value: NodeJS.Platform) => {
+    Object.defineProperty(process, 'platform', {
+      value,
+      configurable: true,
+    });
+  };
+
+  beforeEach(async () => {
+    vi.resetModules();
+    vi.clearAllMocks();
+
+    originalHome = process.env.HOME;
+    originalUserProfile = process.env.USERPROFILE;
+    tempHome = await fs.mkdtemp(path.join(os.tmpdir(), 'gn-codex-setup-'));
+    process.env.HOME = tempHome;
+    process.env.USERPROFILE = tempHome;
+
+    await fs.mkdir(path.join(tempHome, '.codex'), { recursive: true });
+
+    platformDescriptor = Object.getOwnPropertyDescriptor(process, 'platform');
+    setPlatform('win32');
+    vi.spyOn(console, 'log').mockImplementation(() => {});
+  });
+
+  afterEach(async () => {
+    vi.restoreAllMocks();
+
+    if (platformDescriptor) {
+      Object.defineProperty(process, 'platform', platformDescriptor);
+    }
+
+    process.env.HOME = originalHome;
+    process.env.USERPROFILE = originalUserProfile;
+    await fs.rm(tempHome, { recursive: true, force: true });
+  });
+
+  it('invokes codex mcp add with shell enabled on Windows', async () => {
+    const { setupCommand } = await import('../../src/cli/setup.js');
+
+    await setupCommand();
+
+    expect(execFileMock).toHaveBeenCalledWith(
+      'codex',
+      ['mcp', 'add', 'gitnexus', '--', 'cmd', '/c', 'npx', '-y', 'gitnexus@latest', 'mcp'],
+      { shell: true },
+      expect.any(Function),
+    );
+  });
+
+  it('invokes codex mcp add without shell on non-Windows and does not write fallback config', async () => {
+    setPlatform('darwin');
+
+    const { setupCommand } = await import('../../src/cli/setup.js');
+
+    await setupCommand();
+
+    expect(execFileMock).toHaveBeenCalledWith(
+      'codex',
+      ['mcp', 'add', 'gitnexus', '--', 'npx', '-y', 'gitnexus@latest', 'mcp'],
+      { shell: false },
+      expect.any(Function),
+    );
+
+    await expect(
+      fs.access(path.join(tempHome, '.codex', 'config.toml')),
+    ).rejects.toThrow();
+  });
+
+  it('skips Codex setup entirely when ~/.codex is missing', async () => {
+    await fs.rm(path.join(tempHome, '.codex'), { recursive: true, force: true });
+
+    const { setupCommand } = await import('../../src/cli/setup.js');
+
+    await setupCommand();
+
+    expect(execFileMock).not.toHaveBeenCalled();
+    await expect(
+      fs.access(path.join(tempHome, '.agents', 'skills')),
+    ).rejects.toThrow();
+  });
+});
diff --git a/gitnexus/test/unit/shared-type-extractors.test.ts b/gitnexus/test/unit/shared-type-extractors.test.ts
new file mode 100644
index 000000000..1d925feb5
--- /dev/null
+++ b/gitnexus/test/unit/shared-type-extractors.test.ts
@@ -0,0 +1,563 @@
+import { describe, it, expect } from 'vitest';
+import {
+  extractElementTypeFromString,
+  stripNullable,
+  extractReturnTypeName,
+  methodToTypeArgPosition,
+  getContainerDescriptor,
+} from '../../src/core/ingestion/type-extractors/shared.js';
+
+// ---------------------------------------------------------------------------
+// extractElementTypeFromString
+// ---------------------------------------------------------------------------
+
+describe('extractElementTypeFromString', () => {
+  // --- Array suffix ---
+  it('strips array suffix: User[] → User', () => {
+    expect(extractElementTypeFromString('User[]')).toBe('User');
+  });
+
+  it('strips array suffix for primitive: string[] → string', () => {
+    expect(extractElementTypeFromString('string[]')).toBe('string');
+  });
+
+  it('returns undefined for just brackets: []', () => {
+    // Empty base after stripping suffix
+    expect(extractElementTypeFromString('[]')).toBeUndefined();
+  });
+
+  it('returns undefined when base is not a simple word: user model[]', () => {
+    expect(extractElementTypeFromString('user model[]')).toBeUndefined();
+  });
+
+  // --- Go slice prefix ---
+  it('strips Go slice prefix: []User → User', () => {
+    expect(extractElementTypeFromString('[]User')).toBe('User');
+  });
+
+  it('strips Go slice prefix for primitive: []string → string', () => {
+    expect(extractElementTypeFromString('[]string')).toBe('string');
+  });
+
+  // --- Swift array sugar ---
+  it('unwraps Swift array sugar: [User] → User', () => {
+    expect(extractElementTypeFromString('[User]')).toBe('User');
+  });
+
+  // --- Generic angle brackets ---
+  it('unwraps single-arg generic angle: Array<User> → User', () => {
+    expect(extractElementTypeFromString('Array<User>')).toBe('User');
+  });
+
+  it('unwraps single-arg generic angle: C++ vector<User> → User', () => {
+    expect(extractElementTypeFromString('vector<User>')).toBe('User');
+  });
+
+  it('unwraps single-arg generic angle: Rust Vec<User> → User', () => {
+    expect(extractElementTypeFromString('Vec<User>')).toBe('User');
+  });
+
+  // --- Generic square brackets ---
+  it('unwraps Python subscript: List[User] → User', () => {
+    expect(extractElementTypeFromString('List[User]')).toBe('User');
+  });
+
+  // --- Multi-argument generics ---
+  it('returns last arg by default for Map<String, User>: → User', () => {
+    expect(extractElementTypeFromString('Map<String, User>')).toBe('User');
+  });
+
+  it('returns first arg with pos=first for Map<String, User>: → String', () => {
+    expect(extractElementTypeFromString('Map<String, User>', 'first')).toBe('String');
+  });
+
+  it('returns last arg explicitly for Map<String, User>: → User', () => {
+    expect(extractElementTypeFromString('Map<String, User>', 'last')).toBe('User');
+  });
+
+  // --- Nested generics ---
+  it('returns undefined for nested generics: List<Map<String, User>>', () => {
+    // The inner arg "Map<String, User>" is not a simple word (/^\w+$/ fails)
+    expect(extractElementTypeFromString('List<Map<String, User>>')).toBeUndefined();
+  });
+
+  // --- Guard conditions ---
+  it('returns undefined for empty string', () => {
+    expect(extractElementTypeFromString('')).toBeUndefined();
+  });
+
+  it('returns undefined for string longer than 2048 chars', () => {
+    expect(extractElementTypeFromString('A'.repeat(2049))).toBeUndefined();
+  });
+
+  it('returns undefined at exactly the 2048-char limit', () => {
+    // Length > 2048 is rejected; length === 2048 may or may not parse — test boundary
+    const exactly2048 = 'A'.repeat(2048);
+    // This won't contain valid container syntax, so it won't resolve, but it won't be
+    // rejected by the length guard alone. We only assert > 2048 is rejected.
+    expect(extractElementTypeFromString('A'.repeat(2049))).toBeUndefined();
+  });
+
+  it('returns undefined for malformed brackets: Map<String, User]', () => {
+    // Mismatched bracket at depth 0 → malformed
+    expect(extractElementTypeFromString('Map<String, User]')).toBeUndefined();
+  });
+
+  it('returns undefined for just closing angle brackets: >', () => {
+    expect(extractElementTypeFromString('>')).toBeUndefined();
+  });
+
+  it('returns undefined when no brackets are present: User', () => {
+    // No opening bracket → falls through to undefined
+    expect(extractElementTypeFromString('User')).toBeUndefined();
+  });
+
+  it('returns undefined for complex non-word base before []: user model[]', () => {
+    expect(extractElementTypeFromString('user model[]')).toBeUndefined();
+  });
+
+  // --- Edge cases for Swift vs List-subscript disambiguation ---
+  it('does not treat [User] as Swift if it contains angle bracket (impossible case sanity-check)', () => {
+    // [User<X>] — starts with [ ends with ] but contains <, so Swift path is skipped.
+    // Falls to generic extraction: openSquare=0, extracts "User<X>" which is not /^\w+$/.
+    expect(extractElementTypeFromString('[User<X>]')).toBeUndefined();
+  });
+
+  // --- pos='first' on single-arg container falls through to the same result ---
+  it('returns same result for Vec<User> with pos=first', () => {
+    expect(extractElementTypeFromString('Vec<User>', 'first')).toBe('User');
+  });
+
+  // --- Whitespace inside generics ---
+  it('handles whitespace in generic args: Array< User > → User', () => {
+    expect(extractElementTypeFromString('Array< User >')).toBe('User');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// stripNullable
+// ---------------------------------------------------------------------------
+
+describe('stripNullable', () => {
+  // --- Nullable union stripping ---
+  it('strips "| null": User | null → User', () => {
+    expect(stripNullable('User | null')).toBe('User');
+  });
+
+  it('strips "| undefined": User | undefined → User', () => {
+    expect(stripNullable('User | undefined')).toBe('User');
+  });
+
+  it('strips both "| null | undefined": User | null | undefined → User', () => {
+    expect(stripNullable('User | null | undefined')).toBe('User');
+  });
+
+  // --- Nullable suffix ---
+  it('strips nullable suffix: User? → User', () => {
+    expect(stripNullable('User?')).toBe('User');
+  });
+
+  // --- Genuine union is rejected ---
+  it('returns undefined for genuine union: User | Repo', () => {
+    expect(stripNullable('User | Repo')).toBeUndefined();
+  });
+
+  // --- Bare nullable keywords ---
+  it('returns undefined for bare "null"', () => {
+    expect(stripNullable('null')).toBeUndefined();
+  });
+
+  it('returns undefined for bare "undefined"', () => {
+    expect(stripNullable('undefined')).toBeUndefined();
+  });
+
+  it('returns undefined for bare "None"', () => {
+    expect(stripNullable('None')).toBeUndefined();
+  });
+
+  it('returns undefined for bare "nil"', () => {
+    expect(stripNullable('nil')).toBeUndefined();
+  });
+
+  it('returns undefined for bare "void"', () => {
+    expect(stripNullable('void')).toBeUndefined();
+  });
+
+  // --- Empty / whitespace ---
+  it('returns undefined for empty string', () => {
+    expect(stripNullable('')).toBeUndefined();
+  });
+
+  it('returns undefined for whitespace-only string', () => {
+    expect(stripNullable('   ')).toBeUndefined();
+  });
+
+  // --- Trimming ---
+  it('trims surrounding whitespace: "  User  " → User', () => {
+    expect(stripNullable('  User  ')).toBe('User');
+  });
+
+  // --- No-op for clean type names ---
+  it('returns the type name unchanged when no nullable markers: User → User', () => {
+    expect(stripNullable('User')).toBe('User');
+  });
+
+  // --- All-nullable union is rejected ---
+  it('returns undefined when the union is all nullable keywords: null | undefined', () => {
+    expect(stripNullable('null | undefined')).toBeUndefined();
+  });
+
+  // --- Nullable suffix does NOT interact with pipe (order matters) ---
+  it('returns "User?" when ? is embedded before pipe: User? | null', () => {
+    // The ? strip only fires when the whole string ends with '?'.
+    // "User? | null" ends with 'null', so ? is NOT stripped first.
+    // The pipe branch splits → parts: ['User?', 'null'] → filters 'null' → one part
+    // remaining is 'User?' (not in NULLABLE_KEYWORDS), so it is returned as-is.
+    expect(stripNullable('User? | null')).toBe('User?');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// extractReturnTypeName
+// ---------------------------------------------------------------------------
+
+describe('extractReturnTypeName', () => {
+  // --- Simple user-defined type ---
+  it('returns simple type: User → User', () => {
+    expect(extractReturnTypeName('User')).toBe('User');
+  });
+
+  // --- Wrapper generics unwrapping ---
+  it('unwraps Promise: Promise<User> → User', () => {
+    expect(extractReturnTypeName('Promise<User>')).toBe('User');
+  });
+
+  it('unwraps Option: Option<User> → User', () => {
+    expect(extractReturnTypeName('Option<User>')).toBe('User');
+  });
+
+  it('unwraps Result (first arg): Result<User, Error> → User', () => {
+    expect(extractReturnTypeName('Result<User, Error>')).toBe('User');
+  });
+
+  // --- Nullable union / suffix ---
+  it('strips nullable union: User | null → User', () => {
+    expect(extractReturnTypeName('User | null')).toBe('User');
+  });
+
+  it('strips nullable suffix: User? → User', () => {
+    expect(extractReturnTypeName('User?')).toBe('User');
+  });
+
+  // --- Pointer / reference prefix stripping ---
+  it('strips Go pointer prefix: *User → User', () => {
+    expect(extractReturnTypeName('*User')).toBe('User');
+  });
+
+  it('strips Rust reference prefix: &User → User', () => {
+    expect(extractReturnTypeName('&User')).toBe('User');
+  });
+
+  it('strips Rust mutable reference prefix: &mut User → User', () => {
+    expect(extractReturnTypeName('&mut User')).toBe('User');
+  });
+
+  // --- Non-wrapper generic returns base type ---
+  it('returns base type for non-wrapper generic: List<User> → List', () => {
+    expect(extractReturnTypeName('List<User>')).toBe('List');
+  });
+
+  // --- Qualified names ---
+  it('extracts last segment of dot-qualified name: models.User → User', () => {
+    expect(extractReturnTypeName('models.User')).toBe('User');
+  });
+
+  it('extracts last segment of PHP namespace: \\App\\Models\\User → User', () => {
+    expect(extractReturnTypeName('\\App\\Models\\User')).toBe('User');
+  });
+
+  it('extracts last segment of Rust path: models::User → User', () => {
+    expect(extractReturnTypeName('models::User')).toBe('User');
+  });
+
+  // --- Primitives rejected ---
+  it('returns undefined for primitive "string"', () => {
+    expect(extractReturnTypeName('string')).toBeUndefined();
+  });
+
+  it('returns undefined for primitive "int"', () => {
+    expect(extractReturnTypeName('int')).toBeUndefined();
+  });
+
+  it('returns undefined for primitive "boolean"', () => {
+    expect(extractReturnTypeName('boolean')).toBeUndefined();
+  });
+
+  it('returns undefined for primitive "void"', () => {
+    expect(extractReturnTypeName('void')).toBeUndefined();
+  });
+
+  // --- Lowercase (non-uppercase start) rejected ---
+  it('returns undefined for lowercase identifier: user', () => {
+    expect(extractReturnTypeName('user')).toBeUndefined();
+  });
+
+  // --- Empty ---
+  it('returns undefined for empty string', () => {
+    expect(extractReturnTypeName('')).toBeUndefined();
+  });
+
+  // --- Bare wrapper without type arg ---
+  it('returns undefined for bare wrapper without type arg: Promise', () => {
+    expect(extractReturnTypeName('Promise')).toBeUndefined();
+  });
+
+  it('returns undefined for bare wrapper: Option', () => {
+    expect(extractReturnTypeName('Option')).toBeUndefined();
+  });
+
+  // --- Recursive unwrap (nested wrappers) ---
+  it('recursively unwraps nested wrappers: Future<Option<User>> → User', () => {
+    expect(extractReturnTypeName('Future<Option<User>>')).toBe('User');
+  });
+
+  // --- Rust smart pointer ---
+  it('unwraps Rc: Rc<User> → User', () => {
+    expect(extractReturnTypeName('Rc<User>')).toBe('User');
+  });
+
+  it('unwraps Arc: Arc<User> → User', () => {
+    expect(extractReturnTypeName('Arc<User>')).toBe('User');
+  });
+
+  // --- Guard conditions ---
+  it('returns undefined for input longer than 2048 chars', () => {
+    expect(extractReturnTypeName('A'.repeat(2049))).toBeUndefined();
+  });
+
+  it('returns undefined when depth > 10', () => {
+    expect(extractReturnTypeName('User', 11)).toBeUndefined();
+  });
+
+  // --- Rust lifetimes in Result ---
+  it('skips Rust lifetime parameters in Result: Result<\'_, User, Error> is unusual but lifetime in first pos is skipped', () => {
+    // Lifetime as FIRST arg: Result<'a, User> — extractFirstTypeArg skips lifetimes
+    expect(extractReturnTypeName("Result<'a, User>")).toBe('User');
+  });
+
+  it('skips Rust anonymous lifetime: Result<\'_, User>', () => {
+    expect(extractReturnTypeName("Result<'_, User>")).toBe('User');
+  });
+
+  // --- Genuine union is rejected ---
+  it('returns undefined for genuine union: User | Repo', () => {
+    expect(extractReturnTypeName('User | Repo')).toBeUndefined();
+  });
+
+  // --- Uppercase-start constraint ---
+  it('accepts underscore-start identifier: _User', () => {
+    // Pattern is /^[A-Z_]\w*$/ — underscore start is accepted
+    expect(extractReturnTypeName('_User')).toBe('_User');
+  });
+
+  // --- Type with multiple pointer sigils ---
+  it('strips multiple pointer sigils: **User → User', () => {
+    // Regex: /^[&*]+\s*(mut\s+)?/ strips all leading & and *
+    expect(extractReturnTypeName('**User')).toBe('User');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// methodToTypeArgPosition
+// ---------------------------------------------------------------------------
+
+describe('methodToTypeArgPosition', () => {
+  // --- Known single-element container → always 'last' ---
+  it('returns last for known single-element container method: get on Array', () => {
+    expect(methodToTypeArgPosition('get', 'Array')).toBe('last');
+  });
+
+  it('returns last for iter on Vec (single-element)', () => {
+    expect(methodToTypeArgPosition('iter', 'Vec')).toBe('last');
+  });
+
+  // --- Known map container with key method ---
+  it('returns first for keys on Map', () => {
+    expect(methodToTypeArgPosition('keys', 'Map')).toBe('first');
+  });
+
+  it('returns last for values on Map', () => {
+    expect(methodToTypeArgPosition('values', 'Map')).toBe('last');
+  });
+
+  it('returns last for get on Map (value method)', () => {
+    expect(methodToTypeArgPosition('get', 'Map')).toBe('last');
+  });
+
+  // --- Java-specific keySet ---
+  it('returns first for keySet on LinkedHashMap (Java keyMethods)', () => {
+    expect(methodToTypeArgPosition('keySet', 'LinkedHashMap')).toBe('first');
+  });
+
+  it('returns first for keySet on HashMap (Java keyMethods via STD_KEY_METHODS — note: HashMap uses STD_KEY_METHODS, not JAVA_KEY_METHODS)', () => {
+    // HashMap uses STD_KEY_METHODS which has 'keys', not 'keySet'
+    // So keySet on HashMap is not a key method → falls to 'last'
+    expect(methodToTypeArgPosition('keySet', 'HashMap')).toBe('last');
+  });
+
+  it('returns first for keySet on TreeMap (JAVA_KEY_METHODS)', () => {
+    expect(methodToTypeArgPosition('keySet', 'TreeMap')).toBe('first');
+  });
+
+  // --- C# Keys property ---
+  it('returns first for Keys on Dictionary (C# key method)', () => {
+    expect(methodToTypeArgPosition('Keys', 'Dictionary')).toBe('first');
+  });
+
+  it('returns last for Values on Dictionary (C# value method)', () => {
+    expect(methodToTypeArgPosition('Values', 'Dictionary')).toBe('last');
+  });
+
+  // --- Unknown container falls back to method name heuristic ---
+  it('returns first for keys on unknown container: keys on MyMap', () => {
+    expect(methodToTypeArgPosition('keys', 'MyMap')).toBe('first');
+  });
+
+  it('returns last for get on unknown container: get on MyMap', () => {
+    expect(methodToTypeArgPosition('get', 'MyMap')).toBe('last');
+  });
+
+  it('returns first for keySet on unknown container (fallback heuristic)', () => {
+    expect(methodToTypeArgPosition('keySet', 'MyMap')).toBe('first');
+  });
+
+  it('returns first for Keys on unknown container (fallback heuristic)', () => {
+    expect(methodToTypeArgPosition('Keys', 'SomeUnknownMap')).toBe('first');
+  });
+
+  // --- Undefined method / no container ---
+  it('returns last when method and container are both undefined', () => {
+    expect(methodToTypeArgPosition(undefined)).toBe('last');
+  });
+
+  it('returns last when method is undefined and container is known map', () => {
+    // containerTypeName is Map (arity 2), method is undefined → not in keyMethods → 'last'
+    expect(methodToTypeArgPosition(undefined, 'Map')).toBe('last');
+  });
+
+  it('returns last for unknown method on unknown container', () => {
+    expect(methodToTypeArgPosition('somethingElse', 'FooBar')).toBe('last');
+  });
+
+  // --- No container provided, non-key method ---
+  it('returns last for non-key method with no container', () => {
+    expect(methodToTypeArgPosition('get')).toBe('last');
+  });
+
+  it('returns first for keys with no container', () => {
+    expect(methodToTypeArgPosition('keys')).toBe('first');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// getContainerDescriptor
+// ---------------------------------------------------------------------------
+
+describe('getContainerDescriptor', () => {
+  // --- Known map-type (arity 2) ---
+  it('returns descriptor with arity 2 for Map', () => {
+    const desc = getContainerDescriptor('Map');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(2);
+  });
+
+  it('descriptor for Map has keys in keyMethods', () => {
+    const desc = getContainerDescriptor('Map');
+    expect(desc!.keyMethods.has('keys')).toBe(true);
+  });
+
+  it('descriptor for Map has get in valueMethods', () => {
+    const desc = getContainerDescriptor('Map');
+    expect(desc!.valueMethods.has('get')).toBe(true);
+  });
+
+  it('returns descriptor with arity 2 for HashMap', () => {
+    const desc = getContainerDescriptor('HashMap');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(2);
+  });
+
+  it('returns descriptor with arity 2 for Dictionary (C#)', () => {
+    const desc = getContainerDescriptor('Dictionary');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(2);
+  });
+
+  // --- Known single-element container (arity 1) ---
+  it('returns descriptor with arity 1 for Vec', () => {
+    const desc = getContainerDescriptor('Vec');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(1);
+  });
+
+  it('descriptor for Vec has empty keyMethods', () => {
+    const desc = getContainerDescriptor('Vec');
+    expect(desc!.keyMethods.size).toBe(0);
+  });
+
+  it('descriptor for Vec has get in valueMethods', () => {
+    const desc = getContainerDescriptor('Vec');
+    expect(desc!.valueMethods.has('get')).toBe(true);
+  });
+
+  it('returns descriptor with arity 1 for Array', () => {
+    const desc = getContainerDescriptor('Array');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(1);
+  });
+
+  it('returns descriptor with arity 1 for List', () => {
+    const desc = getContainerDescriptor('List');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(1);
+  });
+
+  // --- Unknown type ---
+  it('returns undefined for unknown type: FooBar', () => {
+    expect(getContainerDescriptor('FooBar')).toBeUndefined();
+  });
+
+  it('returns undefined for empty string', () => {
+    expect(getContainerDescriptor('')).toBeUndefined();
+  });
+
+  it('returns undefined for lowercase unknown: mycontainer', () => {
+    expect(getContainerDescriptor('mycontainer')).toBeUndefined();
+  });
+
+  // --- Lowercase built-in containers ---
+  it('returns descriptor for lowercase list (Python)', () => {
+    const desc = getContainerDescriptor('list');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(1);
+  });
+
+  it('returns descriptor for lowercase dict (Python)', () => {
+    const desc = getContainerDescriptor('dict');
+    expect(desc).toBeDefined();
+    expect(desc!.arity).toBe(2);
+  });
+
+  // --- Java-specific map with keySet ---
+  it('descriptor for TreeMap has keySet in keyMethods', () => {
+    const desc = getContainerDescriptor('TreeMap');
+    expect(desc).toBeDefined();
+    expect(desc!.keyMethods.has('keySet')).toBe(true);
+  });
+
+  it('descriptor for ConcurrentHashMap has keySet in keyMethods', () => {
+    const desc = getContainerDescriptor('ConcurrentHashMap');
+    expect(desc).toBeDefined();
+    expect(desc!.keyMethods.has('keySet')).toBe(true);
+  });
+});
diff --git a/gitnexus/test/unit/suffix-index-ambiguity.test.ts b/gitnexus/test/unit/suffix-index-ambiguity.test.ts
new file mode 100644
index 000000000..3c873f06c
--- /dev/null
+++ b/gitnexus/test/unit/suffix-index-ambiguity.test.ts
@@ -0,0 +1,252 @@
+/**
+ * Unit tests for proximity-based Python import resolution.
+ *
+ * When two files share the same bare name (e.g. user.py in two different
+ * directories), suffixResolve alone picks whichever was indexed first.
+ * resolvePythonImport addresses this by checking the importer's own directory
+ * first, mirroring Python's sys.path resolution order.
+ */
+
+import { describe, it, expect } from 'vitest';
+import { buildSuffixIndex, suffixResolve } from '../../src/core/ingestion/resolvers/utils.js';
+import { resolvePythonImport } from '../../src/core/ingestion/resolvers/python.js';
+import { resolveImportPath } from '../../src/core/ingestion/resolvers/standard.js';
+import { SupportedLanguages } from '../../src/config/supported-languages.js';
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function makeCtx(files: string[]) {
+  const normalized = files.map(f => f.replace(/\\/g, '/'));
+  const allFilesSet = new Set(files);
+  const index = buildSuffixIndex(normalized, files);
+  const cache = new Map<string, string | null>();
+  return { files, normalized, allFilesSet, index, cache };
+}
+
+/** Simulate the full dispatch: resolvePythonImport first, then suffixResolve fallback. */
+function resolvePython(
+  currentFile: string,
+  importPath: string,
+  ctx: ReturnType<typeof makeCtx>,
+): string | null {
+  const proximity = resolvePythonImport(currentFile, importPath, ctx.allFilesSet);
+  if (proximity) return proximity;
+  if (importPath.startsWith('.')) return null;
+  const pathLike = importPath.replace(/\./g, '/');
+  const parts = pathLike.split('/').filter(Boolean);
+  return suffixResolve(parts, ctx.normalized, ctx.files, ctx.index);
+}
+
+/** For non-Python languages, delegate directly to standard resolveImportPath. */
+function resolve(
+  currentFile: string,
+  importPath: string,
+  language: SupportedLanguages,
+  ctx: ReturnType<typeof makeCtx>,
+): string | null {
+  return resolveImportPath(
+    currentFile,
+    importPath,
+    ctx.allFilesSet,
+    ctx.files,
+    ctx.normalized,
+    ctx.cache,
+    language,
+    null,
+    ctx.index,
+  );
+}
+
+// ---------------------------------------------------------------------------
+// Python proximity resolution
+// ---------------------------------------------------------------------------
+
+describe('resolvePythonImport — proximity-based resolution for Python', () => {
+  it('resolves bare import to same-directory file when multiple files share the name', () => {
+    const ctx = makeCtx([
+      'app/models/user.py',   // indexed first — would win without proximity
+      'app/services/user.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app/services/auth.py', 'user', ctx);
+    expect(result).toBe('app/services/user.py');
+  });
+
+  it('falls back to suffix index when no same-directory match exists', () => {
+    const ctx = makeCtx([
+      'app/models/user.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app/services/auth.py', 'user', ctx);
+    expect(result).toBe('app/models/user.py');
+  });
+
+  it('handles importer at repo root (no directory) without crashing', () => {
+    const ctx = makeCtx([
+      'user.py',
+      'auth.py',
+    ]);
+
+    // importerDir is '' — proximity skipped, suffix fallback used
+    const result = resolvePython('auth.py', 'user', ctx);
+    expect(result).toBe('user.py');
+  });
+
+  it('does not apply proximity for multi-segment imports (dotted paths)', () => {
+    const ctx = makeCtx([
+      'app/models/utils/helpers.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app/services/auth.py', 'utils.helpers', ctx);
+    expect(result).toBe('app/models/utils/helpers.py');
+  });
+
+  it('resolves same-directory package (user/__init__.py) via proximity', () => {
+    const ctx = makeCtx([
+      'app/models/user/__init__.py',  // indexed first — would win without proximity
+      'app/services/user/__init__.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app/services/auth.py', 'user', ctx);
+    expect(result).toBe('app/services/user/__init__.py');
+  });
+
+  it('falls back to suffixResolve for __init__.py when no same-directory package exists', () => {
+    const ctx = makeCtx([
+      'app/models/__init__.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app/services/auth.py', 'models', ctx);
+    expect(result).toBe('app/models/__init__.py');
+  });
+
+  it('handles Windows-style backslash paths in currentFile without crashing', () => {
+    const ctx = makeCtx([
+      'app/services/user.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app\\services\\auth.py', 'user', ctx);
+    expect(result).toBe('app/services/user.py');
+  });
+
+  it('resolves PEP 328 relative import (.user) to same-directory file', () => {
+    const ctx = makeCtx([
+      'app/services/user.py',
+      'app/services/auth.py',
+    ]);
+
+    const result = resolvePython('app/services/auth.py', '.user', ctx);
+    expect(result).toBe('app/services/user.py');
+  });
+
+  it('returns null when relative import dots exceed directory depth (PEP 328 over-traversal)', () => {
+    // auth.py is at depth 1 (one directory: 'app').
+    // '...user' has 3 dots → 2 upward hops required, but only 1 directory level exists.
+    // CPython raises ImportError; we return null.
+    const ctx = makeCtx([
+      'app/auth.py',
+      'user.py',
+    ]);
+
+    const result = resolvePython('app/auth.py', '...user', ctx);
+    expect(result).toBeNull();
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Namespace packages (PEP 420) — directory with no __init__.py
+// ---------------------------------------------------------------------------
+
+describe('resolvePythonImport — namespace packages (no __init__.py)', () => {
+  // user/ exists as a namespace package: no __init__.py, only submodules.
+  const files = [
+    'app/services/auth.py',
+    'app/services/user/model.py',   // user/ has no __init__.py
+    'app/services/user/queries.py',
+  ];
+
+  it('bare import of namespace package returns null (no file to resolve to)', () => {
+    // `import user` — proximity finds neither user.py nor user/__init__.py.
+    // suffixResolve also finds nothing because no file is literally named "user".
+    // This is expected: CPython itself sets user.__file__ = None for namespace packages.
+    const ctx = makeCtx(files);
+    const result = resolvePython('app/services/auth.py', 'user', ctx);
+    expect(result).toBeNull();
+  });
+
+  it('submodule form resolves correctly via suffixResolve fallback', () => {
+    // `import user.model` — multi-segment, proximity skipped, suffixResolve finds user/model.py.
+    const ctx = makeCtx(files);
+    const result = resolvePython('app/services/auth.py', 'user.model', ctx);
+    expect(result).toBe('app/services/user/model.py');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Ruby: bare require does NOT use proximity
+// ---------------------------------------------------------------------------
+
+describe('resolveImportPath — Ruby bare require does not use proximity', () => {
+  it('returns first-indexed file for bare require (Ruby $LOAD_PATH excludes current directory)', () => {
+    const ctx = makeCtx([
+      'lib/core/helpers.rb',   // indexed first
+      'lib/utils/helpers.rb',
+      'lib/utils/formatter.rb',
+    ]);
+
+    // Ruby bare `require 'helpers'` searches $LOAD_PATH — current directory not included.
+    // No proximity bias; first-indexed file is returned, same as before.
+    const result = resolve('lib/utils/formatter.rb', 'helpers', SupportedLanguages.Ruby, ctx);
+    expect(result).toBe('lib/core/helpers.rb');
+  });
+
+  it('resolves require_relative (dot-prefixed) to same-directory file via generic relative resolver', () => {
+    const ctx = makeCtx([
+      'lib/utils/helpers.rb',
+      'lib/utils/formatter.rb',
+    ]);
+
+    // require_relative arrives as "./<path>" — caught by generic relative resolver, not proximity
+    const result = resolve('lib/utils/formatter.rb', './helpers', SupportedLanguages.Ruby, ctx);
+    expect(result).toBe('lib/utils/helpers.rb');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Other languages: no proximity applied
+// ---------------------------------------------------------------------------
+
+describe('resolveImportPath — no proximity for Java or TypeScript', () => {
+  it('Java: fully-qualified import resolves to the correct file via unique suffix', () => {
+    const ctx = makeCtx([
+      'src/com/a/User.java',
+      'src/com/b/User.java',
+      'src/com/b/Service.java',
+    ]);
+
+    // "com.b.User" → "com/b/User" → unique suffix; no ambiguity
+    const result = resolve('src/com/b/Service.java', 'com.b.User', SupportedLanguages.Java, ctx);
+    expect(result).toBe('src/com/b/User.java');
+  });
+
+  it('TypeScript: relative import resolves via generic relative resolver', () => {
+    const ctx = makeCtx([
+      'src/services/user.ts',
+      'src/services/auth.ts',
+      'src/models/user.ts',
+    ]);
+
+    // "./user" is explicit relative — resolved before proximity is checked
+    const result = resolve('src/services/auth.ts', './user', SupportedLanguages.TypeScript, ctx);
+    expect(result).toBe('src/services/user.ts');
+  });
+});
+
diff --git a/gitnexus/test/unit/symbol-table.test.ts b/gitnexus/test/unit/symbol-table.test.ts
index acf204ada..7af8bfbcb 100644
--- a/gitnexus/test/unit/symbol-table.test.ts
+++ b/gitnexus/test/unit/symbol-table.test.ts
@@ -30,11 +30,13 @@ describe('SymbolTable', () => {
       expect(table.getStats().globalSymbolCount).toBe(1);
     });
 
-    it('allows duplicate adds for same file and name', () => {
+    it('allows duplicate adds for same file and name (overloads preserved)', () => {
       table.add('src/a.ts', 'foo', 'func:foo:1', 'Function');
       table.add('src/a.ts', 'foo', 'func:foo:2', 'Function');
-      // File index overwrites: last wins
-      expect(table.lookupExact('src/a.ts', 'foo')).toBe('func:foo:2');
+      // File index stores both overloads; lookupExact returns first
+      expect(table.lookupExact('src/a.ts', 'foo')).toBe('func:foo:1');
+      // lookupExactAll returns all overloads
+      expect(table.lookupExactAll('src/a.ts', 'foo')).toHaveLength(2);
       // Global index appends
       expect(table.lookupFuzzy('foo')).toHaveLength(2);
     });
@@ -137,14 +139,198 @@ describe('SymbolTable', () => {
     });
   });
 
+  describe('declaredType metadata', () => {
+    it('stores declaredType in SymbolDefinition', () => {
+      table.add('src/models.ts', 'address', 'prop:address', 'Property', {
+        declaredType: 'Address',
+        ownerId: 'class:User',
+      });
+      const def = table.lookupExactFull('src/models.ts', 'address');
+      expect(def).toBeDefined();
+      expect(def!.declaredType).toBe('Address');
+    });
+
+    it('omits declaredType when not provided', () => {
+      table.add('src/models.ts', 'name', 'prop:name', 'Property', { ownerId: 'class:User' });
+      const def = table.lookupExactFull('src/models.ts', 'name');
+      expect(def).toBeDefined();
+      expect(def!.declaredType).toBeUndefined();
+    });
+  });
+
+  describe('Property exclusion from globalIndex', () => {
+    it('Property with ownerId is NOT added to globalIndex', () => {
+      table.add('src/models.ts', 'name', 'prop:name', 'Property', {
+        declaredType: 'string',
+        ownerId: 'class:User',
+      });
+      // Should not appear in fuzzy lookup
+      expect(table.lookupFuzzy('name')).toEqual([]);
+      // But should still be in fileIndex
+      expect(table.lookupExact('src/models.ts', 'name')).toBe('prop:name');
+    });
+
+    it('Property without ownerId IS added to globalIndex', () => {
+      table.add('src/models.ts', 'name', 'prop:name', 'Property');
+      expect(table.lookupFuzzy('name')).toHaveLength(1);
+    });
+
+    it('Property without declaredType is still added to fieldByOwner index only (not globalIndex)', () => {
+      table.add('src/models.ts', 'name', 'prop:name', 'Property', { ownerId: 'class:User' });
+      // No declaredType → still indexed in fieldByOwner (for write-access tracking
+      // in dynamically-typed languages like Ruby/JS), but excluded from globalIndex
+      expect(table.lookupFuzzy('name')).toEqual([]);
+      expect(table.lookupFieldByOwner('class:User', 'name')).toEqual({
+        nodeId: 'prop:name',
+        filePath: 'src/models.ts',
+        type: 'Property',
+        ownerId: 'class:User',
+      });
+    });
+
+    it('non-Property types are always added to globalIndex', () => {
+      table.add('src/models.ts', 'save', 'method:save', 'Method', { ownerId: 'class:User' });
+      expect(table.lookupFuzzy('save')).toHaveLength(1);
+    });
+  });
+
+  describe('conditional callableIndex invalidation', () => {
+    it('adding a Function invalidates callableIndex', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function', { returnType: 'void' });
+      // First call builds the index
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      // Add another callable — should invalidate and rebuild
+      table.add('src/a.ts', 'bar', 'func:bar', 'Method');
+      expect(table.lookupFuzzyCallable('bar')).toHaveLength(1);
+    });
+
+    it('adding a Property does NOT invalidate callableIndex', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      // Build callable index
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      // Add a Property — callable index should still be valid (foo still found)
+      table.add('src/models.ts', 'name', 'prop:name', 'Property', {
+        declaredType: 'string',
+        ownerId: 'class:User',
+      });
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+    });
+
+    it('adding a Class does NOT invalidate callableIndex', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      table.add('src/models.ts', 'User', 'class:User', 'Class');
+      // Class is not callable, should not trigger rebuild
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+    });
+  });
+
+  describe('lookupFieldByOwner', () => {
+    it('finds a Property by ownerNodeId and fieldName', () => {
+      table.add('src/models.ts', 'address', 'prop:address', 'Property', {
+        declaredType: 'Address',
+        ownerId: 'class:User',
+      });
+      const def = table.lookupFieldByOwner('class:User', 'address');
+      expect(def).toBeDefined();
+      expect(def!.declaredType).toBe('Address');
+      expect(def!.nodeId).toBe('prop:address');
+    });
+
+    it('returns undefined for unknown owner', () => {
+      table.add('src/models.ts', 'address', 'prop:address', 'Property', {
+        declaredType: 'Address',
+        ownerId: 'class:User',
+      });
+      expect(table.lookupFieldByOwner('class:Unknown', 'address')).toBeUndefined();
+    });
+
+    it('returns undefined for unknown field name', () => {
+      table.add('src/models.ts', 'address', 'prop:address', 'Property', {
+        declaredType: 'Address',
+        ownerId: 'class:User',
+      });
+      expect(table.lookupFieldByOwner('class:User', 'email')).toBeUndefined();
+    });
+
+    it('returns undefined for empty table', () => {
+      expect(table.lookupFieldByOwner('class:User', 'name')).toBeUndefined();
+    });
+
+    it('indexes Property without declaredType (for dynamic language write-access)', () => {
+      table.add('src/models.ts', 'name', 'prop:name', 'Property', { ownerId: 'class:User' });
+      expect(table.lookupFieldByOwner('class:User', 'name')).toEqual({
+        nodeId: 'prop:name',
+        filePath: 'src/models.ts',
+        type: 'Property',
+        ownerId: 'class:User',
+      });
+    });
+
+    it('distinguishes fields by owner', () => {
+      table.add('src/models.ts', 'name', 'prop:user:name', 'Property', {
+        declaredType: 'string',
+        ownerId: 'class:User',
+      });
+      table.add('src/models.ts', 'name', 'prop:repo:name', 'Property', {
+        declaredType: 'RepoName',
+        ownerId: 'class:Repo',
+      });
+      expect(table.lookupFieldByOwner('class:User', 'name')!.declaredType).toBe('string');
+      expect(table.lookupFieldByOwner('class:Repo', 'name')!.declaredType).toBe('RepoName');
+    });
+  });
+
+  describe('lookupFuzzyCallable', () => {
+    it('returns only callable types (Function, Method, Constructor)', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      table.add('src/a.ts', 'bar', 'method:bar', 'Method');
+      table.add('src/a.ts', 'Baz', 'ctor:Baz', 'Constructor');
+      table.add('src/a.ts', 'User', 'class:User', 'Class');
+      table.add('src/a.ts', 'IUser', 'iface:IUser', 'Interface');
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('bar')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('Baz')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('User')).toEqual([]);
+      expect(table.lookupFuzzyCallable('IUser')).toEqual([]);
+    });
+
+    it('returns empty array for unknown name', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      expect(table.lookupFuzzyCallable('unknown')).toEqual([]);
+    });
+
+    it('rebuilds index after adding new callable', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('bar')).toEqual([]);
+      table.add('src/a.ts', 'bar', 'func:bar', 'Function');
+      expect(table.lookupFuzzyCallable('bar')).toHaveLength(1);
+    });
+
+    it('filters non-callable types from mixed name entries', () => {
+      table.add('src/a.ts', 'save', 'func:save', 'Function');
+      table.add('src/b.ts', 'save', 'class:save', 'Class');
+      const callables = table.lookupFuzzyCallable('save');
+      expect(callables).toHaveLength(1);
+      expect(callables[0].type).toBe('Function');
+    });
+  });
+
   describe('clear', () => {
-    it('resets all state', () => {
+    it('resets all state including fieldByOwner', () => {
       table.add('src/a.ts', 'foo', 'func:foo', 'Function');
       table.add('src/b.ts', 'bar', 'func:bar', 'Function');
+      table.add('src/models.ts', 'address', 'prop:address', 'Property', {
+        declaredType: 'Address',
+        ownerId: 'class:User',
+      });
       table.clear();
       expect(table.getStats()).toEqual({ fileCount: 0, globalSymbolCount: 0 });
       expect(table.lookupExact('src/a.ts', 'foo')).toBeUndefined();
       expect(table.lookupFuzzy('foo')).toEqual([]);
+      expect(table.lookupFieldByOwner('class:User', 'address')).toBeUndefined();
+      expect(table.lookupFuzzyCallable('foo')).toEqual([]);
     });
 
     it('allows re-adding after clear', () => {
@@ -153,5 +339,226 @@ describe('SymbolTable', () => {
       table.add('src/b.ts', 'bar', 'func:bar', 'Function');
       expect(table.getStats()).toEqual({ fileCount: 1, globalSymbolCount: 1 });
     });
+
+    it('resets callableIndex so first lookup after clear rebuilds from scratch', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      // Populate the lazy callable index
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      table.clear();
+      // After clear the callable index must be gone — empty table returns nothing
+      expect(table.lookupFuzzyCallable('foo')).toEqual([]);
+      // Re-adding and looking up rebuilds successfully
+      table.add('src/a.ts', 'foo', 'func:foo2', 'Function');
+      expect(table.lookupFuzzyCallable('foo')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('foo')[0].nodeId).toBe('func:foo2');
+    });
+  });
+
+  describe('metadata spread branches (individual optional fields)', () => {
+    it('stores only parameterCount when no other metadata is given', () => {
+      table.add('src/utils.ts', 'compute', 'func:compute', 'Function', { parameterCount: 3 });
+      const def = table.lookupExactFull('src/utils.ts', 'compute');
+      expect(def).toBeDefined();
+      expect(def!.parameterCount).toBe(3);
+      expect(def!.returnType).toBeUndefined();
+      expect(def!.declaredType).toBeUndefined();
+      expect(def!.ownerId).toBeUndefined();
+    });
+
+    it('stores only ownerId on a Method (non-Property) — still added to globalIndex', () => {
+      table.add('src/models.ts', 'save', 'method:save', 'Method', { ownerId: 'class:Repo' });
+      const def = table.lookupExactFull('src/models.ts', 'save');
+      expect(def).toBeDefined();
+      expect(def!.ownerId).toBe('class:Repo');
+      expect(def!.parameterCount).toBeUndefined();
+      expect(def!.returnType).toBeUndefined();
+      expect(def!.declaredType).toBeUndefined();
+      // Non-Property with ownerId must still appear in globalIndex
+      expect(table.lookupFuzzy('save')).toHaveLength(1);
+    });
+
+    it('stores declaredType alone (no ownerId) — symbol goes to globalIndex', () => {
+      // A Variable/Property without an owner should still be globally visible
+      table.add('src/config.ts', 'DEFAULT_TIMEOUT', 'var:DEFAULT_TIMEOUT', 'Variable', {
+        declaredType: 'number',
+      });
+      const def = table.lookupExactFull('src/config.ts', 'DEFAULT_TIMEOUT');
+      expect(def).toBeDefined();
+      expect(def!.declaredType).toBe('number');
+      expect(def!.ownerId).toBeUndefined();
+      // No ownerId → not a Property exclusion path → must be in globalIndex
+      expect(table.lookupFuzzy('DEFAULT_TIMEOUT')).toHaveLength(1);
+      expect(table.lookupFuzzy('DEFAULT_TIMEOUT')[0].declaredType).toBe('number');
+    });
+
+    it('stores all four optional metadata fields simultaneously on a Method', () => {
+      table.add('src/models.ts', 'find', 'method:find', 'Method', {
+        parameterCount: 2,
+        returnType: 'User | undefined',
+        declaredType: 'QueryResult',
+        ownerId: 'class:UserRepository',
+      });
+      const def = table.lookupExactFull('src/models.ts', 'find');
+      expect(def).toBeDefined();
+      expect(def!.parameterCount).toBe(2);
+      expect(def!.returnType).toBe('User | undefined');
+      expect(def!.declaredType).toBe('QueryResult');
+      expect(def!.ownerId).toBe('class:UserRepository');
+    });
+
+    it('omits all optional fields when metadata is not provided at all', () => {
+      table.add('src/utils.ts', 'noop', 'func:noop', 'Function');
+      const def = table.lookupExactFull('src/utils.ts', 'noop');
+      expect(def).toBeDefined();
+      expect(def!.parameterCount).toBeUndefined();
+      expect(def!.returnType).toBeUndefined();
+      expect(def!.declaredType).toBeUndefined();
+      expect(def!.ownerId).toBeUndefined();
+    });
+
+    it('stores parameterCount: 0 (falsy value) correctly', () => {
+      // parameterCount of 0 must not be dropped by the spread guard
+      table.add('src/utils.ts', 'noArgs', 'func:noArgs', 'Function', { parameterCount: 0 });
+      const def = table.lookupExactFull('src/utils.ts', 'noArgs');
+      expect(def).toBeDefined();
+      expect(def!.parameterCount).toBe(0);
+    });
+  });
+
+  describe('lookupFuzzyCallable — lazy index behaviour', () => {
+    it('returns empty array when table has no callables', () => {
+      table.add('src/models.ts', 'User', 'class:User', 'Class');
+      table.add('src/models.ts', 'IUser', 'iface:IUser', 'Interface');
+      expect(table.lookupFuzzyCallable('User')).toEqual([]);
+      expect(table.lookupFuzzyCallable('IUser')).toEqual([]);
+    });
+
+    it('uses cached index on second call without adding new symbols', () => {
+      table.add('src/a.ts', 'fetch', 'func:fetch', 'Function', { returnType: 'Response' });
+      // First call — builds the lazy index
+      const first = table.lookupFuzzyCallable('fetch');
+      expect(first).toHaveLength(1);
+      // Second call — must return equivalent result from cache
+      const second = table.lookupFuzzyCallable('fetch');
+      expect(second).toHaveLength(1);
+      expect(second[0].nodeId).toBe('func:fetch');
+      // Both calls return the same array reference (same cache entry)
+      expect(first).toBe(second);
+    });
+
+    it('invalidated cache is rebuilt correctly after adding a Method', () => {
+      table.add('src/a.ts', 'alpha', 'func:alpha', 'Function');
+      // Warm the cache
+      expect(table.lookupFuzzyCallable('alpha')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('beta')).toEqual([]);
+      // Add a Method — must invalidate cache
+      table.add('src/a.ts', 'beta', 'method:beta', 'Method');
+      // Rebuilt cache must now include beta
+      const result = table.lookupFuzzyCallable('beta');
+      expect(result).toHaveLength(1);
+      expect(result[0].type).toBe('Method');
+    });
+
+    it('invalidated cache is rebuilt correctly after adding a Constructor', () => {
+      table.add('src/a.ts', 'existing', 'func:existing', 'Function');
+      expect(table.lookupFuzzyCallable('existing')).toHaveLength(1);
+      table.add('src/models.ts', 'MyClass', 'ctor:MyClass', 'Constructor');
+      expect(table.lookupFuzzyCallable('MyClass')).toHaveLength(1);
+      expect(table.lookupFuzzyCallable('MyClass')[0].type).toBe('Constructor');
+    });
+  });
+
+  describe('lookupExactFull — full SymbolDefinition shape', () => {
+    it('returns undefined for unknown file', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      expect(table.lookupExactFull('src/other.ts', 'foo')).toBeUndefined();
+    });
+
+    it('returns undefined for unknown symbol name within a known file', () => {
+      table.add('src/a.ts', 'foo', 'func:foo', 'Function');
+      expect(table.lookupExactFull('src/a.ts', 'bar')).toBeUndefined();
+    });
+
+    it('returns undefined for empty table', () => {
+      expect(table.lookupExactFull('src/a.ts', 'foo')).toBeUndefined();
+    });
+
+    it('returns the full SymbolDefinition including nodeId, filePath, and type', () => {
+      table.add('src/models.ts', 'address', 'prop:address', 'Property', {
+        declaredType: 'Address',
+        ownerId: 'class:User',
+      });
+      const def = table.lookupExactFull('src/models.ts', 'address');
+      expect(def).toBeDefined();
+      expect(def!.nodeId).toBe('prop:address');
+      expect(def!.filePath).toBe('src/models.ts');
+      expect(def!.type).toBe('Property');
+      expect(def!.declaredType).toBe('Address');
+      expect(def!.ownerId).toBe('class:User');
+    });
+
+    it('returns first definition when same file and name are added twice (overloads preserved)', () => {
+      table.add('src/a.ts', 'foo', 'func:foo:v1', 'Function', { returnType: 'void' });
+      table.add('src/a.ts', 'foo', 'func:foo:v2', 'Function', { returnType: 'string' });
+      // lookupExactFull returns first match
+      const def = table.lookupExactFull('src/a.ts', 'foo');
+      expect(def).toBeDefined();
+      expect(def!.nodeId).toBe('func:foo:v1');
+      expect(def!.returnType).toBe('void');
+      // lookupExactAll returns all overloads
+      const all = table.lookupExactAll('src/a.ts', 'foo');
+      expect(all).toHaveLength(2);
+      expect(all[0].nodeId).toBe('func:foo:v1');
+      expect(all[1].nodeId).toBe('func:foo:v2');
+      expect(all[1].returnType).toBe('string');
+    });
+  });
+
+  describe('lookupFieldByOwner — additional coverage', () => {
+    it('stores multiple distinct fields under the same owner', () => {
+      table.add('src/models.ts', 'id', 'prop:user:id', 'Property', {
+        declaredType: 'number',
+        ownerId: 'class:User',
+      });
+      table.add('src/models.ts', 'email', 'prop:user:email', 'Property', {
+        declaredType: 'string',
+        ownerId: 'class:User',
+      });
+      table.add('src/models.ts', 'createdAt', 'prop:user:createdAt', 'Property', {
+        declaredType: 'Date',
+        ownerId: 'class:User',
+      });
+      expect(table.lookupFieldByOwner('class:User', 'id')!.declaredType).toBe('number');
+      expect(table.lookupFieldByOwner('class:User', 'email')!.declaredType).toBe('string');
+      expect(table.lookupFieldByOwner('class:User', 'createdAt')!.declaredType).toBe('Date');
+    });
+
+    it('returns the full SymbolDefinition (nodeId + filePath + type) not just declaredType', () => {
+      table.add('src/models.ts', 'score', 'prop:score', 'Property', {
+        declaredType: 'number',
+        ownerId: 'class:Player',
+      });
+      const def = table.lookupFieldByOwner('class:Player', 'score');
+      expect(def).toBeDefined();
+      expect(def!.nodeId).toBe('prop:score');
+      expect(def!.filePath).toBe('src/models.ts');
+      expect(def!.type).toBe('Property');
+    });
+
+    it('key collision is impossible between different owners sharing a field name', () => {
+      // Ensures the null-byte separator in the key prevents cross-owner leakage
+      table.add('src/models.ts', 'id', 'prop:a:id', 'Property', {
+        declaredType: 'string',
+        ownerId: 'class:A',
+      });
+      table.add('src/models.ts', 'id', 'prop:b:id', 'Property', {
+        declaredType: 'UUID',
+        ownerId: 'class:B',
+      });
+      expect(table.lookupFieldByOwner('class:A', 'id')!.nodeId).toBe('prop:a:id');
+      expect(table.lookupFieldByOwner('class:B', 'id')!.nodeId).toBe('prop:b:id');
+      // An owner whose id is the concatenation of A's ownerId + fieldName must not match
+      expect(table.lookupFieldByOwner('class:A\0id', '')).toBeUndefined();
+    });
   });
 });
diff --git a/gitnexus/test/unit/topological-sort.test.ts b/gitnexus/test/unit/topological-sort.test.ts
new file mode 100644
index 000000000..25ad787d9
--- /dev/null
+++ b/gitnexus/test/unit/topological-sort.test.ts
@@ -0,0 +1,152 @@
+import { describe, it, expect } from 'vitest';
+import { topologicalLevelSort } from '../../src/core/ingestion/pipeline.js';
+
+describe('topologicalLevelSort', () => {
+  it('returns empty levels for empty graph', () => {
+    const importMap = new Map<string, Set<string>>();
+    const { levels, cycleCount } = topologicalLevelSort(importMap);
+    expect(levels).toEqual([]);
+    expect(cycleCount).toBe(0);
+  });
+
+  it('returns single level for files with no imports', () => {
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set()],
+      ['b.ts', new Set()],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    expect(levels).toHaveLength(1);
+    expect(levels[0]).toContain('a.ts');
+    expect(levels[0]).toContain('b.ts');
+  });
+
+  it('orders files by dependency depth', () => {
+    // b imports a, c imports b → a first, then b, then c
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set()],
+      ['b.ts', new Set(['a.ts'])],
+      ['c.ts', new Set(['b.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    expect(levels).toHaveLength(3);
+    expect(levels[0]).toContain('a.ts');
+    expect(levels[1]).toContain('b.ts');
+    expect(levels[2]).toContain('c.ts');
+  });
+
+  it('groups independent files at the same level', () => {
+    // b and c both import a → a at level 0, b and c at level 1
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set()],
+      ['b.ts', new Set(['a.ts'])],
+      ['c.ts', new Set(['a.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    expect(levels).toHaveLength(2);
+    expect(levels[0]).toContain('a.ts');
+    expect(levels[1]).toContain('b.ts');
+    expect(levels[1]).toContain('c.ts');
+  });
+
+  it('handles cycles by grouping them in a final level', () => {
+    // a imports b, b imports a — circular
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set(['b.ts'])],
+      ['b.ts', new Set(['a.ts'])],
+    ]);
+    const { levels, cycleCount } = topologicalLevelSort(importMap);
+    // Both should appear (in a cycle group)
+    const allFiles = levels.flat();
+    expect(allFiles).toContain('a.ts');
+    expect(allFiles).toContain('b.ts');
+    expect(cycleCount).toBe(2);
+  });
+
+  it('handles disconnected components', () => {
+    // Two independent groups with no cross-links
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set()],
+      ['b.ts', new Set(['a.ts'])],
+      ['x.ts', new Set()],
+      ['y.ts', new Set(['x.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    // Level 0 has both roots, level 1 has both dependents
+    expect(levels[0]).toContain('a.ts');
+    expect(levels[0]).toContain('x.ts');
+    expect(levels[1]).toContain('b.ts');
+    expect(levels[1]).toContain('y.ts');
+  });
+
+  it('handles diamond dependencies', () => {
+    // d imports b and c; b and c both import a
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set()],
+      ['b.ts', new Set(['a.ts'])],
+      ['c.ts', new Set(['a.ts'])],
+      ['d.ts', new Set(['b.ts', 'c.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    expect(levels).toHaveLength(3);
+    expect(levels[0]).toContain('a.ts');
+    expect(levels[1]).toContain('b.ts');
+    expect(levels[1]).toContain('c.ts');
+    expect(levels[2]).toContain('d.ts');
+  });
+
+  it('handles a single file with no imports', () => {
+    const importMap = new Map<string, Set<string>>([
+      ['only.ts', new Set()],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    expect(levels).toHaveLength(1);
+    expect(levels[0]).toContain('only.ts');
+  });
+
+  it('handles a dependency on a file not explicitly in the map', () => {
+    // b imports external.ts which is not itself a key in importMap
+    const importMap = new Map<string, Set<string>>([
+      ['b.ts', new Set(['external.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    // external.ts has in-degree 0 (no one depends on it as a key), appears first
+    // b.ts depends on external.ts so appears after
+    const allFiles = levels.flat();
+    expect(allFiles).toContain('external.ts');
+    expect(allFiles).toContain('b.ts');
+    const externalLevel = levels.findIndex(l => l.includes('external.ts'));
+    const bLevel = levels.findIndex(l => l.includes('b.ts'));
+    expect(externalLevel).toBeLessThan(bLevel);
+  });
+
+  it('handles a cycle mixed with an acyclic dependent', () => {
+    // a and b are cyclic; c depends on b (and ends up in cycle group too
+    // because b never reaches in-degree 0)
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set(['b.ts'])],
+      ['b.ts', new Set(['a.ts'])],
+      ['c.ts', new Set(['b.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    // No file has in-degree 0 to start: a needs b, b needs a, c needs b
+    // All end up in the cycle group
+    const allFiles = levels.flat();
+    expect(allFiles).toContain('a.ts');
+    expect(allFiles).toContain('b.ts');
+    expect(allFiles).toContain('c.ts');
+  });
+
+  it('all files appear exactly once across all levels', () => {
+    const importMap = new Map<string, Set<string>>([
+      ['a.ts', new Set()],
+      ['b.ts', new Set(['a.ts'])],
+      ['c.ts', new Set(['a.ts'])],
+      ['d.ts', new Set(['b.ts', 'c.ts'])],
+    ]);
+    const { levels } = topologicalLevelSort(importMap);
+    const allFiles = levels.flat();
+    const uniqueFiles = new Set(allFiles);
+    expect(uniqueFiles.size).toBe(allFiles.length);
+    expect(uniqueFiles.size).toBe(4);
+  });
+});
diff --git a/gitnexus/test/unit/type-env.test.ts b/gitnexus/test/unit/type-env.test.ts
index ff0c8cf1d..2e7eaa78c 100644
--- a/gitnexus/test/unit/type-env.test.ts
+++ b/gitnexus/test/unit/type-env.test.ts
@@ -1,5 +1,6 @@
 import { describe, it, expect } from 'vitest';
 import { buildTypeEnv, type TypeEnv, type TypeEnvironment } from '../../src/core/ingestion/type-env.js';
+import { stripNullable, extractSimpleTypeName } from '../../src/core/ingestion/type-extractors/shared.js';
 import Parser from 'tree-sitter';
 import TypeScript from 'tree-sitter-typescript';
 import Java from 'tree-sitter-java';
@@ -345,6 +346,12 @@ describe('buildTypeEnv', () => {
       expect(flatGet(env, 'user')).toBe('User');
     });
 
+    it('extracts type from standalone annotation without value (file scope)', () => {
+      const tree = parse('active_user: User', Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'active_user')).toBe('User');
+    });
+
     it('extracts type from function parameters', () => {
       const tree = parse('def process(user: User, repo: Repository): pass', Python);
       const { env } = buildTypeEnv(tree, 'python');
@@ -383,6 +390,72 @@ describe('buildTypeEnv', () => {
       expect(flatGet(env, 'age')).toBe('int');
       expect(flatGet(env, 'repo')).toBe('UserRepo');
     });
+
+    describe('Python match/case as_pattern binding (Phase 6)', () => {
+      it('extracts type from `case User() as u` in match statement', () => {
+        const tree = parse(`
+class User:
+    def save(self):
+        pass
+
+def process(x):
+    match x:
+        case User() as u:
+            u.save()
+`, Python);
+        const { env } = buildTypeEnv(tree, 'python');
+        expect(flatGet(env, 'u')).toBe('User');
+      });
+
+      it('does NOT overwrite an existing binding in scopeEnv', () => {
+        const tree = parse(`
+class User:
+    pass
+
+def process(x):
+    u: User = x
+    match x:
+        case User() as u:
+            u.save()
+`, Python);
+        const { env } = buildTypeEnv(tree, 'python');
+        // u is already bound from the annotation, pattern binding should not overwrite
+        expect(flatGet(env, 'u')).toBe('User');
+      });
+
+      it('extracts type for each bound variable when multiple cases have as-patterns', () => {
+        const tree = parse(`
+class User:
+    pass
+
+class Repo:
+    pass
+
+def process(x):
+    match x:
+        case User() as u:
+            u.save()
+        case Repo() as r:
+            r.save()
+`, Python);
+        const { env } = buildTypeEnv(tree, 'python');
+        expect(flatGet(env, 'u')).toBe('User');
+        expect(flatGet(env, 'r')).toBe('Repo');
+      });
+
+      it('does NOT extract binding when the pattern is not a class_pattern', () => {
+        // `case 42 as n:` — integer pattern, not a class_pattern
+        const tree = parse(`
+def process(x):
+    match x:
+        case 42 as n:
+            pass
+`, Python);
+        const { env } = buildTypeEnv(tree, 'python');
+        // No class_pattern child — should return undefined
+        expect(flatGet(env, 'n')).toBeUndefined();
+      });
+    });
   });
 
   describe('C++', () => {
@@ -481,7 +554,7 @@ class UserService {
       }
       findCalls(tree.rootNode);
 
-      expect(calls.length).toBeGreaterThanOrEqual(1);
+      expect(calls.length).toBe(1);
       // $this should resolve to enclosing class 'UserService'
       expect(typeEnv.lookup('$this', calls[0])).toBe('UserService');
     });
@@ -749,7 +822,7 @@ object AppConfig {
       }
       findCalls(tree.rootNode);
 
-      expect(calls.length).toBeGreaterThanOrEqual(1);
+      expect(calls.length).toBe(1);
       expect(typeEnv.lookup('this', calls[0])).toBe('AppConfig');
     });
   });
@@ -1190,7 +1263,7 @@ class RepoService {
         expect(flatGet(env, 'item')).toBe('Config');
       });
 
-      it('does NOT extract binding from if let Some(x) = opt (requires generic unwrapping)', () => {
+      it('extracts binding from if let Some(x) = opt via Phase 5.2 pattern binding', () => {
         const tree = parse(`
           fn process(opt: Option<User>) {
             if let Some(user) = opt {
@@ -1199,8 +1272,9 @@ class RepoService {
           }
         `, Rust);
         const { env } = buildTypeEnv(tree, 'rust');
-        // user's type is Option's inner type — requires generic unwrapping (Phase 3)
-        expect(flatGet(env, 'user')).toBeUndefined();
+        // Option<User> is unwrapped to "User" in TypeEnv via NULLABLE_WRAPPER_TYPES.
+        // extractPatternBinding maps `user` → "User" from the scopeEnv lookup for `opt`.
+        expect(flatGet(env, 'user')).toBe('User');
       });
 
       it('does NOT extract field bindings from struct pattern destructuring', () => {
@@ -1240,9 +1314,97 @@ class RepoService {
           }
         `, Rust);
         const { env } = buildTypeEnv(tree, 'rust');
-        expect(flatGet(env, 'opt')).toBe('Option');
+        // Option<User> unwraps to User (nullable wrapper unwrapping)
+        expect(flatGet(env, 'opt')).toBe('User');
         expect(flatGet(env, 'user')).toBe('User');
       });
+
+      it('Phase 5.2: extracts binding from if let Some(x) = opt where opt: Option<User>', () => {
+        const tree = parse(`
+          fn process(opt: Option<User>) {
+            if let Some(user) = opt {
+              user.save();
+            }
+          }
+        `, Rust);
+        const { env } = buildTypeEnv(tree, 'rust');
+        // opt: Option<User> → scopeEnv stores "User" (NULLABLE_WRAPPER_TYPES unwrapping)
+        // extractPatternBinding maps user → opt's type → "User"
+        expect(flatGet(env, 'user')).toBe('User');
+      });
+
+      it('Phase 5.2: does NOT extract binding when source variable is unknown', () => {
+        const tree = parse(`
+          fn process() {
+            if let Some(x) = unknown_var {
+              x.foo();
+            }
+          }
+        `, Rust);
+        const { env } = buildTypeEnv(tree, 'rust');
+        // unknown_var is not in scopeEnv — conservative, produces no binding
+        expect(flatGet(env, 'x')).toBeUndefined();
+      });
+
+      it('Phase 5.2: does NOT extract binding for non-Option/Result wrappers', () => {
+        const tree = parse(`
+          fn process(vec: Vec<User>) {
+            if let SomeOtherVariant(x) = vec {
+              x.save();
+            }
+          }
+        `, Rust);
+        const { env } = buildTypeEnv(tree, 'rust');
+        // SomeOtherVariant is not a known unwrap wrapper — no binding
+        expect(flatGet(env, 'x')).toBeUndefined();
+      });
+    });
+
+    describe('Java instanceof pattern variable (Phase 5.2)', () => {
+      it('extracts binding from x instanceof User user', () => {
+        const tree = parse(`
+          class App {
+            void process(Object obj) {
+              if (obj instanceof User user) {
+                user.save();
+              }
+            }
+          }
+        `, Java);
+        const { env } = buildTypeEnv(tree, 'java');
+        expect(flatGet(env, 'user')).toBe('User');
+      });
+
+      it('extracts boolean type from plain instanceof (no pattern variable)', () => {
+        const tree = parse(`
+          class App {
+            void process(Object obj) {
+              boolean b = obj instanceof User;
+            }
+          }
+        `, Java);
+        const { env } = buildTypeEnv(tree, 'java');
+        // No pattern variable — b gets its declared type 'boolean', not 'User'
+        expect(flatGet(env, 'b')).toBe('boolean');
+      });
+
+      it('extracts correct type when multiple instanceof patterns exist', () => {
+        const tree = parse(`
+          class App {
+            void process(Object obj) {
+              if (obj instanceof User user) {
+                user.save();
+              }
+              if (obj instanceof Repo repo) {
+                repo.save();
+              }
+            }
+          }
+        `, Java);
+        const { env } = buildTypeEnv(tree, 'java');
+        expect(flatGet(env, 'user')).toBe('User');
+        expect(flatGet(env, 'repo')).toBe('Repo');
+      });
     });
 
     describe('PHP', () => {
@@ -1427,7 +1589,7 @@ class RepoService {
           getStats: () => ({ fileCount: 0, globalSymbolCount: 0 }),
           clear: () => {},
         };
-        const { env } = buildTypeEnv(tree, 'kotlin', mockSymbolTable as any);
+        const { env } = buildTypeEnv(tree, 'kotlin', { symbolTable: mockSymbolTable as any });
         expect(flatGet(env, 'user')).toBe('User');
       });
 
@@ -1440,13 +1602,15 @@ class RepoService {
         const mockSymbolTable = {
           lookupFuzzy: (name: string) =>
             name === 'doStuff' ? [{ nodeId: 'n1', filePath: 'utils.kt', type: 'Function' }] : [],
+          lookupFuzzyCallable: () => [],
+          lookupFieldByOwner: () => undefined,
           lookupExact: () => undefined,
           lookupExactFull: () => undefined,
           add: () => {},
           getStats: () => ({ fileCount: 0, globalSymbolCount: 0 }),
           clear: () => {},
         };
-        const { env } = buildTypeEnv(tree, 'kotlin', mockSymbolTable as any);
+        const { env } = buildTypeEnv(tree, 'kotlin', { symbolTable: mockSymbolTable as any });
         expect(flatGet(env, 'result')).toBeUndefined();
       });
 
@@ -1905,4 +2069,2176 @@ svc = App::Models::Service.new
       expect(binding!.calleeName).toBe('GetUser');
     });
   });
+
+  describe('assignment chain propagation (Tier 2, depth-1)', () => {
+    it('propagates explicit annotation: const a: User = ...; const b = a → b is User', () => {
+      const tree = parse(`
+        const a: User = getUser();
+        const b = a;
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'a')).toBe('User');
+      expect(flatGet(env, 'b')).toBe('User');
+    });
+
+    it('propagates constructor inference: const a = new User(); const b = a → b is User', () => {
+      const tree = parse(`
+        const a = new User();
+        const b = a;
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'a')).toBe('User');
+      expect(flatGet(env, 'b')).toBe('User');
+    });
+
+    it('depth-2 in declaration order resolves because single pass iterates sequentially', () => {
+      // b = a → resolved (a has User), c = b → also resolved because the same
+      // pass sets b before processing c (declarations are always in order).
+      // The "depth-1" limit applies to out-of-order or cyclic references.
+      const tree = parse(`
+        const a: User = getUser();
+        const b = a;
+        const c = b;
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'a')).toBe('User');
+      expect(flatGet(env, 'b')).toBe('User');
+      expect(flatGet(env, 'c')).toBe('User');
+    });
+
+    it('propagates typed function parameter to local alias', () => {
+      const tree = parse(`
+        function process(user: User) {
+          const alias = user;
+          alias.save();
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // 'alias' should get User from the parameter 'user'
+      const scopeKey = [...env.keys()].find(k => k.startsWith('process@'));
+      expect(scopeKey).toBeDefined();
+      expect(env.get(scopeKey!)?.get('user')).toBe('User');
+      expect(env.get(scopeKey!)?.get('alias')).toBe('User');
+    });
+
+    it('propagates file-level typed variable to local alias inside function', () => {
+      const tree = parse(`
+        const config: Config = getConfig();
+        function process() {
+          const cfg = config;
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // cfg in process scope picks up Config from the file-level config binding
+      const scopeKey = [...env.keys()].find(k => k.startsWith('process@'));
+      expect(scopeKey).toBeDefined();
+      expect(env.get(scopeKey!)?.get('cfg')).toBe('Config');
+    });
+
+    it('does not propagate when RHS is a call expression (not a plain identifier)', () => {
+      const tree = parse(`
+        const x = getUser();
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // getUser() is a call_expression — should not create a binding
+      expect(flatGet(env, 'x')).toBeUndefined();
+    });
+  });
+
+  describe('stripNullable', () => {
+    it('strips User | null → User', () => {
+      expect(stripNullable('User | null')).toBe('User');
+    });
+
+    it('strips User | undefined → User', () => {
+      expect(stripNullable('User | undefined')).toBe('User');
+    });
+
+    it('strips User | null | undefined → User', () => {
+      expect(stripNullable('User | null | undefined')).toBe('User');
+    });
+
+    it('strips User? → User', () => {
+      expect(stripNullable('User?')).toBe('User');
+    });
+
+    it('passes through User unchanged', () => {
+      expect(stripNullable('User')).toBe('User');
+    });
+
+    it('refuses genuine union User | Repo → undefined', () => {
+      expect(stripNullable('User | Repo')).toBeUndefined();
+    });
+
+    it('returns undefined for null alone', () => {
+      expect(stripNullable('null')).toBeUndefined();
+    });
+
+    it('returns undefined for empty string', () => {
+      expect(stripNullable('')).toBeUndefined();
+    });
+
+    it('strips User | void → User', () => {
+      expect(stripNullable('User | void')).toBe('User');
+    });
+
+    it('strips User | None → User (Python)', () => {
+      expect(stripNullable('User | None')).toBe('User');
+    });
+
+    it('strips User | nil → User (Ruby)', () => {
+      expect(stripNullable('User | nil')).toBe('User');
+    });
+
+    it('strips User | void | nil → User (multiple nullable keywords)', () => {
+      expect(stripNullable('User | void | nil')).toBe('User');
+    });
+
+    it('returns undefined for None alone', () => {
+      expect(stripNullable('None')).toBeUndefined();
+    });
+
+    it('returns undefined for nil alone', () => {
+      expect(stripNullable('nil')).toBeUndefined();
+    });
+
+    it('returns undefined for void alone', () => {
+      expect(stripNullable('void')).toBeUndefined();
+    });
+
+    it('returns undefined for undefined alone', () => {
+      expect(stripNullable('undefined')).toBeUndefined();
+    });
+
+    it('strips nullable suffix with spaces: User ? → User', () => {
+      expect(stripNullable(' User? ')).toBe('User');
+    });
+
+    it('returns undefined for all-nullable union: null | undefined | void', () => {
+      expect(stripNullable('null | undefined | void')).toBeUndefined();
+    });
+
+    it('refuses triple non-null union: User | Repo | Service', () => {
+      expect(stripNullable('User | Repo | Service')).toBeUndefined();
+    });
+  });
+
+  // ── Assignment chain: reverse-order depth limitation ──────────────────
+
+  describe('assignment chain — reverse-order limitation', () => {
+    it('resolves reverse-declared Tier 2→Tier 0 (Tier 0 set during walk, before post-walk)', () => {
+      // Even though b = a appears before a: User in source, a's Tier 0 binding
+      // is set during the AST walk. The post-walk Tier 2 loop runs after all
+      // Tier 0/1 bindings exist, so b = a resolves.
+      const tree = parse(`
+        function process() {
+          const b = a;
+          const a: User = getUser();
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      const scopeKey = [...env.keys()].find(k => k.startsWith('process@'));
+      expect(scopeKey).toBeDefined();
+      expect(env.get(scopeKey!)?.get('a')).toBe('User');
+      expect(env.get(scopeKey!)?.get('b')).toBe('User');
+    });
+
+    it('resolves reverse-ordered Tier 2 chains via fixpoint (b = a, a = c, c: User)', () => {
+      // Two chained Tier 2 assignments in reverse source order.
+      // The unified fixpoint loop resolves this in 2 iterations:
+      //   Iter 1: a = c (c is Tier 0 → a = User)
+      //   Iter 2: b = a (a now resolved → b = User)
+      const tree = parse(`
+        function process() {
+          const b = a;
+          const a = c;
+          const c: User = getUser();
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      const scopeKey = [...env.keys()].find(k => k.startsWith('process@'));
+      expect(scopeKey).toBeDefined();
+      expect(env.get(scopeKey!)?.get('c')).toBe('User');
+      expect(env.get(scopeKey!)?.get('a')).toBe('User');
+      // Fixpoint now resolves reverse-ordered chains
+      expect(env.get(scopeKey!)?.get('b')).toBe('User');
+    });
+  });
+
+  // ── Assignment chain: per-language coverage for refactored code ────────
+
+  describe('assignment chain — Go var_spec form', () => {
+    it('propagates var b = a when a has a known type (var_spec)', () => {
+      const tree = parse(`
+        package main
+        func process() {
+          var a User
+          var b = a
+        }
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      expect(flatGet(env, 'a')).toBe('User');
+      expect(flatGet(env, 'b')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — C# equals_value_clause', () => {
+    it('propagates var alias = u when u has a known type', () => {
+      const tree = parse(`
+        class App {
+          void Process() {
+            User u = new User();
+            var alias = u;
+          }
+        }
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — Kotlin property_declaration', () => {
+    it('propagates val alias = u when u has an explicit type annotation', () => {
+      const tree = parse(`
+        fun process() {
+          val u: User = User()
+          val alias = u
+        }
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+
+    it('propagates val alias = u inside a class method with explicit type', () => {
+      const tree = parse(`
+        class Service {
+          fun process() {
+            val u: User = User()
+            val alias = u
+          }
+        }
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — Java variable_declarator', () => {
+    it('propagates var alias = u when u has an explicit type', () => {
+      const tree = parse(`
+        class App {
+          void process() {
+            User u = new User();
+            var alias = u;
+          }
+        }
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — Python identifier', () => {
+    it('propagates alias = u when u has a type annotation', () => {
+      const tree = parse(`
+def process():
+    u: User = get_user()
+    alias = u
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+
+    it('propagates walrus alias := u when u has a type annotation', () => {
+      const tree = parse(`
+def process():
+    u: User = get_user()
+    if (alias := u):
+        pass
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — Rust let_declaration', () => {
+    it('propagates let alias = u when u has a type annotation', () => {
+      const tree = parse(`
+        fn process() {
+          let u: User = User::new();
+          let alias = u;
+        }
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — PHP variable_name', () => {
+    it('propagates $alias = $u when $u has a type from new', () => {
+      const tree = parse(`<?php
+        function process() {
+          $u = new User();
+          $alias = $u;
+        }
+      `, PHP.php);
+      const { env } = buildTypeEnv(tree, 'php');
+      expect(flatGet(env, '$u')).toBe('User');
+      expect(flatGet(env, '$alias')).toBe('User');
+    });
+  });
+
+  describe('assignment chain — Ruby assignment', () => {
+    it('captures assignment of simple identifier for pending propagation', () => {
+      // Ruby assignment chains: alias_user = user where user is a simple identifier.
+      // In unit tests (no SymbolTable), constructor bindings are pending — so we test
+      // that the extractor captures the assignment relationship correctly.
+      // The actual propagation is tested via integration tests where User.new resolves.
+      const tree = parse(`
+def process(user)
+  alias_user = user
+  alias_user.save
+end
+`, Ruby);
+      const { env } = buildTypeEnv(tree, 'ruby');
+      // Without a known type for 'user' (no annotation in Ruby), alias_user stays undefined.
+      // This verifies the extractor doesn't crash or produce false bindings.
+      expect(flatGet(env, 'alias_user')).toBeUndefined();
+    });
+
+    it('does not capture assignment from call expression (not a plain identifier)', () => {
+      const tree = parse(`
+def process
+  user = get_user()
+  alias_user = user
+end
+`, Ruby);
+      const { env } = buildTypeEnv(tree, 'ruby');
+      // get_user() is a call — user has no resolved type, so alias_user should not resolve either
+      expect(flatGet(env, 'alias_user')).toBeUndefined();
+    });
+  });
+
+  // ── lookupInEnv with nullable stripping ───────────────────────────────
+
+  describe('lookup resolves through nullable stripping', () => {
+    it('TypeScript: lookup strips User | null to User', () => {
+      const tree = parse(`
+        function process(user: User | null) {
+          user.save();
+        }
+      `, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // Find the call node for .save()
+      const { env } = typeEnv;
+      const scopeKey = [...env.keys()].find(k => k.startsWith('process@'));
+      expect(scopeKey).toBeDefined();
+      // The raw env stores 'User' because extractSimpleTypeName already unwraps union_type
+      expect(env.get(scopeKey!)?.get('user')).toBe('User');
+    });
+
+    it('Python: lookup strips User | None to User', () => {
+      const tree = parse(`
+def process():
+    user: User | None = get_user()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      // Python 3.10+ union syntax is stored as raw text "User | None"
+      // which stripNullable resolves at lookup time
+      const rawVal = flatGet(env, 'user');
+      expect(rawVal).toBeDefined();
+      // Either already unwrapped by AST, or stored as raw text for stripNullable
+      expect(stripNullable(rawVal!)).toBe('User');
+    });
+  });
+
+  // ── extractSimpleTypeName: nullable wrapper unwrapping ────────────────
+
+  describe('extractSimpleTypeName — nullable wrapper unwrapping', () => {
+    it('unwraps Java Optional<User> → User', () => {
+      const tree = parse(`
+        class App {
+          void process() {
+            Optional<User> user = findUser();
+          }
+        }
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('unwraps Rust Option<User> → User', () => {
+      const tree = parse(`
+        fn process() {
+          let user: Option<User> = find_user();
+        }
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does NOT unwrap List<User> — containers stay as List', () => {
+      const tree = parse(`
+        class App {
+          void process() {
+            List<User> users = getUsers();
+          }
+        }
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'users')).toBe('List');
+    });
+
+    it('does NOT unwrap Map<String, User> — containers stay as Map', () => {
+      const tree = parse(`
+        class App {
+          void process() {
+            Map<String, User> lookup = getLookup();
+          }
+        }
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'lookup')).toBe('Map');
+    });
+
+    it('does NOT unwrap CompletableFuture<User> — async wrappers stay', () => {
+      const tree = parse(`
+        class App {
+          void process() {
+            CompletableFuture<User> future = fetchUser();
+          }
+        }
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'future')).toBe('CompletableFuture');
+    });
+
+    it('unwraps TypeScript extractSimpleTypeName directly for generic_type', () => {
+      // Parse a Java Optional<User> and grab the type node to test extractSimpleTypeName
+      parser.setLanguage(Java);
+      const tree = parser.parse(`class A { void f() { Optional<User> x = null; } }`);
+      // Navigate to the type node: class > body > method > body > local_variable_declaration > type
+      const method = tree.rootNode.firstNamedChild?.lastNamedChild?.firstNamedChild;
+      const decl = method?.lastNamedChild?.firstNamedChild;
+      const typeNode = decl?.childForFieldName('type');
+      if (typeNode) {
+        expect(extractSimpleTypeName(typeNode)).toBe('User');
+      }
+    });
+  });
+
+  // ── C++ assignment chain propagation ──────────────────────────────────
+
+  describe('assignment chain — C++ auto alias', () => {
+    it('propagates auto alias = u when u has an explicit type', () => {
+      const tree = parse(`
+        void process() {
+          User u;
+          auto alias = u;
+        }
+      `, CPP);
+      const { env } = buildTypeEnv(tree, 'cpp');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'alias')).toBe('User');
+    });
+  });
+
+  // ── Tier 1c: for-loop element type inference ───────────────────────────
+
+  describe('for-loop element type inference (Tier 1c) — TypeScript', () => {
+    it('infers loop variable type from User[] parameter annotation (for...of)', () => {
+      const tree = parse(`
+        function process(users: User[]) {
+          for (const user of users) {
+            user.save();
+          }
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('infers loop variable type from Array<User> parameter annotation (for...of)', () => {
+      const tree = parse(`
+        function process(users: Array<User>) {
+          for (const user of users) {
+            user.save();
+          }
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does NOT bind loop variable for for...in (produces string keys, not elements)', () => {
+      const tree = parse(`
+        function process(users: User[]) {
+          for (const key in users) {
+            console.log(key);
+          }
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // for...in yields string keys — extractor must NOT bind 'key' to User
+      expect(flatGet(env, 'key')).toBeUndefined();
+    });
+
+    it('does not infer type when iterable variable has no known type in scope', () => {
+      const tree = parse(`
+        function process(users: any) {
+          for (const user of users) {
+            user.save();
+          }
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+
+    it('infers loop variable from a locally declared const with User[] annotation', () => {
+      const tree = parse(`
+        function process() {
+          const users: User[] = getUsers();
+          for (const user of users) {
+            user.save();
+          }
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // Note: users itself is stored with no binding (extractSimpleTypeName returns undefined
+      // for array_type), but the for-loop extractor uses AST walking to resolve the element type.
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('infers loop variable from readonly User[] parameter', () => {
+      const tree = parse(`
+        function process(users: readonly User[]) {
+          for (const user of users) {
+            user.save();
+          }
+        }
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('for-loop element type inference (Tier 1c) — Python', () => {
+    it('infers loop variable type from List[User] parameter annotation', () => {
+      const tree = parse(`
+def process(users: List[User]):
+    for user in users:
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('infers loop variable type from Sequence[User] annotation style', () => {
+      const tree = parse(`
+def process(users: Sequence[User]):
+    for user in users:
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does not infer type when iterable parameter has no annotation', () => {
+      const tree = parse(`
+def process(users):
+    for user in users:
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+
+    it('infers loop variable from a locally annotated variable', () => {
+      const tree = parse(`
+def process():
+    users: List[User] = get_users()
+    for user in users:
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      // List[User] → extractSimpleTypeName returns 'List' (base name), stored as 'List'
+      // extractElementTypeFromString('List') → undefined (no brackets in the string)
+      // So user is unresolved unless users is stored as 'List[User]' raw.
+      // The locally annotated var stores the base type 'List' via extractSimpleTypeName.
+      // This test documents the actual behavior.
+      const usersType = flatGet(env, 'users');
+      expect(usersType).toBeDefined(); // users has a type annotation
+    });
+  });
+
+  describe('for-loop element type inference (Tier 1c) — Go', () => {
+    it('infers loop variable type from []User slice parameter (_, user := range users)', () => {
+      const tree = parse(`
+package main
+func process(users []User) {
+    for _, user := range users {
+        user.Save()
+    }
+}
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does NOT infer element type for single-var slice range (yields index, not element)', () => {
+      const tree = parse(`
+package main
+func process(users []User) {
+    for user := range users {
+        user.Save()
+    }
+}
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      // In Go, `for v := range slice` gives the INDEX (int), not the element.
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+
+    it('infers loop variable from map range (_, v := range myMap)', () => {
+      const tree = parse(`
+package main
+func process(myMap map[string]User) {
+    for _, v := range myMap {
+        v.Save()
+    }
+}
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      expect(flatGet(env, 'v')).toBe('User');
+    });
+
+    it('does NOT infer element type for single-var map range (yields key, not value)', () => {
+      const tree = parse(`
+package main
+func process(myMap map[string]User) {
+    for k := range myMap {
+        _ = k
+    }
+}
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      // Single-var map range gives the KEY, not the value
+      expect(flatGet(env, 'k')).toBeUndefined();
+    });
+
+    it('does not infer type for C-style for loops (no range_clause)', () => {
+      const tree = parse(`
+package main
+func process() {
+    for i := 0; i < 10; i++ {
+    }
+}
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      // C-style for loop has no range_clause — extractor must return early
+      expect(flatGet(env, 'i')).toBeUndefined();
+    });
+
+    it('does not infer type when iterable has no annotation in scope', () => {
+      const tree = parse(`
+package main
+func process() {
+    users := getUsers()
+    for _, user := range users {
+        user.Save()
+    }
+}
+      `, Go);
+      const { env } = buildTypeEnv(tree, 'go');
+      // users has no type annotation — only a constructor binding candidate
+      // Without a resolved type for users, user cannot be inferred
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+  });
+
+  describe('for-loop element type inference (Tier 1c) — Rust', () => {
+    it('infers loop variable from Vec<User> parameter (for user in &users)', () => {
+      const tree = parse(`
+fn process(users: Vec<User>) {
+    for user in &users {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('infers loop variable from &[User] slice parameter', () => {
+      const tree = parse(`
+fn process(users: &[User]) {
+    for user in users {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does not infer type for range expression (0..10)', () => {
+      const tree = parse(`
+fn process() {
+    for i in 0..10 {
+        println!("{}", i);
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'i')).toBeUndefined();
+    });
+
+    it('does not infer type when iterable has no annotation', () => {
+      const tree = parse(`
+fn process() {
+    let users = get_users();
+    for user in &users {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+  });
+
+  describe('for-loop element type inference (Tier 1c) — C#', () => {
+    it('infers loop variable from var foreach with List<User> parameter', () => {
+      const tree = parse(`
+using System.Collections.Generic;
+class Foo {
+  void Process(List<User> users) {
+    foreach (var user in users) {
+      user.Save();
+    }
+  }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('still resolves explicit type foreach (regression)', () => {
+      const tree = parse(`
+class Foo {
+  void Process(List<User> users) {
+    foreach (User user in users) {
+      user.Save();
+    }
+  }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does not infer type when iterable has no annotation', () => {
+      const tree = parse(`
+class Foo {
+  void Process() {
+    var users = GetUsers();
+    foreach (var user in users) {
+      user.Save();
+    }
+  }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+  });
+
+  describe('for-loop element type inference (Tier 1c) — Kotlin', () => {
+    it('infers loop variable from unannotated for with List<User> parameter', () => {
+      const tree = parse(`
+fun process(users: List<User>) {
+    for (user in users) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('still resolves explicit type annotation (regression)', () => {
+      const tree = parse(`
+fun process(users: List<User>) {
+    for (user: User in users) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does not infer type when iterable has no annotation', () => {
+      const tree = parse(`
+fun process() {
+    val users = getUsers()
+    for (user in users) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+  });
+
+  describe('for-loop element type inference (Tier 1c) — Java', () => {
+    it('still resolves explicit type enhanced-for (regression)', () => {
+      const tree = parse(`
+class Foo {
+  void process(List<User> users) {
+    for (User user : users) {
+      user.save();
+    }
+  }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('does not infer type when iterable has no annotation', () => {
+      const tree = parse(`
+class Foo {
+  void process() {
+    var users = getUsers();
+    for (var user : users) {
+      user.save();
+    }
+  }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBeUndefined();
+    });
+  });
+
+  describe('previously-skipped limitations (now resolved)', () => {
+    it('TS destructured for-of: for (const [k, v] of entries) — last-child heuristic', () => {
+      // array_pattern handled by binding last named child to element type.
+      // Map<string, User> resolves to 'User' via last generic type arg.
+      const tree = parse(`
+function process(entries: Map<string, User>) {
+  for (const [key, user] of entries) {
+    user.save();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Python tuple unpacking: for key, value in dict.items() — call iterable + pattern_list', () => {
+      // call iterable: data.items() → extract receiver 'data' for type lookup.
+      // pattern_list: bind last named child to element type.
+      // dict[str, User] resolves to 'User' via last generic type arg.
+      const tree = parse(`
+def process(data: dict[str, User]):
+    for key, user in data.items():
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Python enumerate(dict.items()): for i, k, v — skips int index, binds value var to User', () => {
+      // enumerate() wraps the iterable: right node is call with fn='enumerate', not fn.attribute.
+      // Without enumerate() support, iterableName is never set → v stays unbound.
+      // With the fix: unwrap enumerate → inner call → data.items() → v binds to User.
+      const tree = parse(`
+def process(data: dict[str, User]):
+    for i, k, v in enumerate(data.items()):
+        v.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'v')).toBe('User');
+      // i is the int index from enumerate — must NOT be bound to User
+      expect(flatGet(env, 'i')).toBeUndefined();
+    });
+
+    it('Python enumerate(dict.items()) with nested tuple: for i, (k, v) — binds v to User', () => {
+      // Nested tuple pattern: `(k, v)` is a tuple_pattern inside the pattern_list.
+      // AST: pattern_list > [identifier('i'), tuple_pattern > [identifier('k'), identifier('v')]]
+      // Must descend into tuple_pattern to extract v, not just collect top-level identifiers.
+      const tree = parse(`
+def process(data: dict[str, User]):
+    for i, (k, v) in enumerate(data.items()):
+        v.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'v')).toBe('User');
+      expect(flatGet(env, 'i')).toBeUndefined();
+    });
+
+    it('Python enumerate with parenthesized tuple: for (k, v) in enumerate(users) — binds v to User', () => {
+      // Parenthesized tuple pattern: `(k, v)` is a tuple_pattern, not pattern_list.
+      // AST: for_statement > left: tuple_pattern > [identifier('k'), identifier('v')]
+      // Must handle tuple_pattern as top-level left node, not just nested inside pattern_list.
+      const tree = parse(`
+def process(users: List[User]):
+    for (k, v) in enumerate(users):
+        v.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      // enumerate yields (index, element) — k is int (unbound), v is User
+      expect(flatGet(env, 'v')).toBe('User');
+      expect(flatGet(env, 'k')).toBeUndefined();
+    });
+
+    it('TS instanceof narrowing: if (x instanceof User) — first-writer-wins, not block-scoped', () => {
+      // Binds x to User via extractPatternBinding on binary_expression.
+      // Only works when x has no prior type binding in scopeEnv.
+      // True block-level scoping (overwriting existing bindings) is Phase 5.
+      const tree = parse(`
+function process(x) {
+  if (x instanceof User) {
+    x.save();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'x')).toBe('User');
+    });
+
+    it('Rust for with .iter(): for user in users.iter() — call_expression iterable', () => {
+      // Extracts receiver from call_expression > field_expression > identifier.
+      // .iter()/.into_iter()/.iter_mut() is the dominant Rust iteration pattern.
+      const tree = parse(`
+fn process(users: Vec<User>) {
+    for user in users.iter() {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('method-aware type arg selection (.keys() vs .values())', () => {
+    it('TS for-of map.values() resolves to value type (User)', () => {
+      const tree = parse(`
+function process(data: Map<string, User>) {
+  for (const user of data.values()) {
+    user.save();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('TS for-of map.keys() resolves to key type (string)', () => {
+      const tree = parse(`
+function process(data: Map<string, User>) {
+  for (const key of data.keys()) {
+    key.trim();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'key')).toBe('string');
+    });
+
+    it('Python for key in data.keys() resolves to key type (str)', () => {
+      const tree = parse(`
+def process(data: dict[str, User]):
+    for key in data.keys():
+        key.strip()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'key')).toBe('str');
+    });
+
+    it('Python for user in data.values() resolves to value type (User)', () => {
+      const tree = parse(`
+def process(data: dict[str, User]):
+    for user in data.values():
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Rust for key in map.keys() resolves to key type (String)', () => {
+      const tree = parse(`
+fn process(data: HashMap<String, User>) {
+    for key in data.keys() {
+        key.len();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'key')).toBe('String');
+    });
+
+    it('Rust for user in map.values() resolves to value type (User)', () => {
+      const tree = parse(`
+fn process(data: HashMap<String, User>) {
+    for user in data.values() {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('container descriptor-aware type arg selection', () => {
+    it('HashMap.keys() resolves to key type (String) via descriptor', () => {
+      const tree = parse(`
+fn process(data: HashMap<String, User>) {
+    for key in data.keys() {
+        key.len();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'key')).toBe('String');
+    });
+
+    it('HashMap.values() resolves to value type (User) via descriptor', () => {
+      const tree = parse(`
+fn process(data: HashMap<String, User>) {
+    for user in data.values() {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Vec.iter() resolves to element type (User) — arity 1 always returns last', () => {
+      const tree = parse(`
+fn process(users: Vec<User>) {
+    for user in users.iter() {
+        user.save();
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('unknown container falls back to last-arg heuristic', () => {
+      // MyCache is not in CONTAINER_DESCRIPTORS, so .keys() still returns first via fallback
+      const tree = parse(`
+function process(cache: MyCache<string, User>) {
+  for (const key of cache.keys()) {
+    key.trim();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'key')).toBe('string');
+    });
+  });
+
+  describe('for-loop Phase 2 enhancements', () => {
+    it('TS object destructuring skip: for (const { id, name } of users) — no binding produced', () => {
+      const tree = parse(`
+function process(users: User[]) {
+  for (const { id, name } of users) {
+    console.log(id, name);
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // Object destructuring should NOT produce bindings — field types are unknown
+      expect(flatGet(env, 'id')).toBeUndefined();
+      expect(flatGet(env, 'name')).toBeUndefined();
+    });
+
+    it('TS member access: for (const user of this.users) with users: User[] param — resolves', () => {
+      const tree = parse(`
+function process(users: User[]) {
+  for (const user of this.users) {
+    user.save();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Python member access: for user in self.users with users: List[User] param — resolves', () => {
+      const tree = parse(`
+def process(users: List[User]):
+    for user in self.users:
+        user.save()
+      `, Python);
+      const { env } = buildTypeEnv(tree, 'python');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('C++ structured bindings: for (auto& [key, value] : map) with map<string, User> param — binds value', () => {
+      const tree = parse(`
+void process(std::map<std::string, User>& map) {
+  for (auto& [key, value] : map) {
+    value.save();
+  }
+}
+      `, CPP);
+      const { env } = buildTypeEnv(tree, 'cpp');
+      expect(flatGet(env, 'value')).toBe('User');
+    });
+
+    it('C++ structured bindings: exact App.cpp fixture — binds user and repo', () => {
+      const tree = parse(`
+#include "User.h"
+#include "Repo.h"
+#include <map>
+#include <string>
+#include <vector>
+
+void processUserMap(std::map<std::string, User> userMap) {
+    for (auto& [key, user] : userMap) {
+        user.save();
+    }
+}
+
+void processRepoMap(std::map<std::string, Repo> repoMap) {
+    for (const auto& [key, repo] : repoMap) {
+        repo.save();
+    }
+}
+      `, CPP);
+      const { env } = buildTypeEnv(tree, 'cpp');
+      expect(flatGet(env, 'user')).toBe('User');
+      expect(flatGet(env, 'repo')).toBe('Repo');
+    });
+  });
+
+  describe('known limitations (documented skip tests)', () => {
+    it.skip('Ruby block parameter: users.each { |user| } — closure param inference, different feature', () => {
+      // Not a for-loop; .each { |user| } is a method call with a block.
+      // Requires closure parameter inference — a different feature category
+      // applicable to Ruby, Swift closures, Kotlin lambdas, and Java lambdas.
+      const tree = parse(`
+def process(users)
+  users.each { |user| user.save }
+end
+      `, Ruby);
+      const { env } = buildTypeEnv(tree, 'ruby');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('Kotlin when/is pattern binding (Phase 6)', () => {
+    it('when (x) { is User -> } binds x to User', () => {
+      const tree = parse(`
+fun process(x: Any) {
+    when (x) {
+        is User -> x.name
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'x')).toBe('User');
+    });
+
+    it('when (x) { is User -> ...; is Admin -> ... } — last arm overwrites (allowPatternBindingOverwrite)', () => {
+      const tree = parse(`
+fun process(x: Any) {
+    when (x) {
+        is User -> x.name
+        is Admin -> x.role
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      // allowPatternBindingOverwrite means each arm overwrites — last one wins
+      expect(flatGet(env, 'x')).toBe('Admin');
+    });
+
+    it('when (x) { else -> } — no type check, no pattern binding produced', () => {
+      const tree = parse(`
+fun process() {
+    val x: String = ""
+    when (x) {
+        else -> println(x)
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      // x has type String from its declaration — no pattern binding should narrow it
+      // (else branch has no type_test node, so extractKotlinPatternBinding never fires)
+      expect(flatGet(env, 'x')).toBe('String');
+    });
+  });
+
+  describe('Kotlin for-loop HashMap.values resolution (Phase 6)', () => {
+    it('for (user in data.values) binds user to User via HashMap<String, User>', () => {
+      const tree = parse(`
+fun processValues(data: HashMap<String, User>) {
+    for (user in data.values) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('for (user in users) binds user to User via List<User> param', () => {
+      const tree = parse(`
+fun processList(users: List<User>) {
+    for (user in users) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('Java switch pattern variable (Phase 6)', () => {
+    it('switch (obj) { case User u -> } binds u to User', () => {
+      const tree = parse(`
+class App {
+    void process(Object obj) {
+        switch (obj) {
+            case User u -> u.save();
+        }
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'u')).toBe('User');
+    });
+
+    it('switch (obj) { case User u -> ...; case Admin a -> ... } — both bind', () => {
+      const tree = parse(`
+class App {
+    void process(Object obj) {
+        switch (obj) {
+            case User u -> u.save();
+            case Admin a -> a.manage();
+        }
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'u')).toBe('User');
+      expect(flatGet(env, 'a')).toBe('Admin');
+    });
+
+    it('switch (x) { case 42 -> ... } — no pattern variable, no binding', () => {
+      const tree = parse(`
+class App {
+    void process(Object x) {
+        switch (x) {
+            case 42 -> System.out.println("answer");
+        }
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      // Only the parameter x:Object should exist, no extra bindings from case 42
+      expect(flatGet(env, 'x')).toBe('Object');
+    });
+
+    it('obj instanceof User user — regression: still works after type_pattern addition', () => {
+      const tree = parse(`
+class App {
+    void process(Object obj) {
+        if (obj instanceof User user) {
+            user.save();
+        }
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('new container descriptors (Phase 6.1)', () => {
+    it('Collection<User> resolves element type via descriptor (arity 1)', () => {
+      const tree = parse(`
+using System.Collections.ObjectModel;
+public class App {
+    public void Process(Collection<User> users) {
+        foreach (var user in users) {
+            user.Save();
+        }
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('MutableMap<String, User>.values() resolves to User via descriptor (arity 2)', () => {
+      const tree = parse(`
+fun process(data: MutableMap<String, User>) {
+    for (user in data.values()) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('MutableList<User> resolves element type via descriptor', () => {
+      const tree = parse(`
+fun process(users: MutableList<User>) {
+    for (user in users) {
+        user.save()
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('SortedSet<User> resolves element type via descriptor (C#)', () => {
+      const tree = parse(`
+using System.Collections.Generic;
+public class App {
+    public void Process(SortedSet<User> users) {
+        foreach (var user in users) {
+            user.Save();
+        }
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Stream<User> resolves element type via descriptor (Java)', () => {
+      const tree = parse(`
+class App {
+    void process(Stream<User> users) {
+        for (User user : users.toList()) {
+            user.save();
+        }
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('C# recursive_pattern binding (Phase 6.1)', () => {
+    it('obj is User { Name: "Alice" } u — binds u to User', () => {
+      const tree = parse(`
+public class App {
+    public void Process(object obj) {
+        if (obj is User { Name: "Alice" } u) {
+            u.Save();
+        }
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'u')).toBe('User');
+    });
+
+    it('switch expression with recursive_pattern — binds r to Repo', () => {
+      const tree = parse(`
+public class App {
+    public void Process(object obj) {
+        var result = obj switch {
+            Repo { Name: "main" } r => r.Save(),
+            _ => false
+        };
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'r')).toBe('Repo');
+    });
+
+    it('recursive_pattern without designation — no pattern binding produced', () => {
+      const tree = parse(`
+public class App {
+    public void Process(object obj) {
+        if (obj is User { Name: "Alice" }) {
+        }
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      // obj → object from the parameter, but no pattern binding
+      expect(flatGet(env, 'obj')).toBe('object');
+      expect(flatSize(env)).toBe(1); // only the parameter binding
+    });
+  });
+
+  describe('C# await foreach (Phase 6.1)', () => {
+    it('await foreach (var user in users) — same node type as foreach, resolves element type', () => {
+      const tree = parse(`
+using System.Collections.Generic;
+public class App {
+    public async Task Process(IAsyncEnumerable<User> users) {
+        await foreach (var user in users) {
+            user.Save();
+        }
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('foreach (var user in this.data.Values) — nested member access with container property', () => {
+      const tree = parse(`
+using System.Collections.Generic;
+public class App {
+    private Dictionary<string, User> data;
+    public void ProcessValues() {
+        foreach (var user in this.data.Values) {
+            user.Save();
+        }
+    }
+}
+      `, CSharp);
+      const { env, lookup } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+      // Verify lookup works from the call site (user.Save())
+      const saveCall = tree.rootNode.descendantsOfType('invocation_expression')[0];
+      expect(lookup('user', saveCall)).toBe('User');
+    });
+  });
+
+  describe('TypeScript class field declaration (Phase 6.1)', () => {
+    it('class field with array type — for-loop resolves element type via declarationTypeNodes', () => {
+      const tree = parse(`
+class UserService {
+    private users: User[] = [];
+    processUsers() {
+        for (const user of this.users) {
+            user.save();
+        }
+    }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      // User[] is an array_type — extractSimpleTypeName returns undefined (no simple base name).
+      // But declarationTypeNodes captures the raw AST node, so for-loop resolution
+      // uses Strategy 1 (extractTsElementTypeFromAnnotation) to resolve the element type.
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('class field with generic type annotation — binds field name to base type', () => {
+      const tree = parse(`
+class RepoService {
+    repos: Map<string, Repo> = new Map();
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'repos')).toBe('Map');
+    });
+  });
+
+  describe('PHP foreach $this->property (Phase 7.4 — Strategy C)', () => {
+    it('resolves loop variable from @var User[] property without @param workaround', () => {
+      const tree = parse(`<?php
+class App {
+    /** @var User[] */
+    private $users;
+    public function process(): void {
+        foreach ($this->users as $user) {
+            $user->save();
+        }
+    }
+}
+      `, PHP.php);
+      const { env } = buildTypeEnv(tree, 'php');
+      expect(flatGet(env, '$user')).toBe('User');
+    });
+
+    it('does not bind from unknown $this->property (conservative)', () => {
+      const tree = parse(`<?php
+class App {
+    private $unknownProp;
+    public function process(): void {
+        foreach ($this->unknownProp as $item) {
+            $item->save();
+        }
+    }
+}
+      `, PHP.php);
+      const { env } = buildTypeEnv(tree, 'php');
+      expect(flatGet(env, '$item')).toBeUndefined();
+    });
+
+    it('multi-class file: resolves correct property for each class', () => {
+      const tree = parse(`<?php
+class A {
+    /** @var User[] */
+    private $items;
+    public function processA(): void {
+        foreach ($this->items as $item) {
+            $item->save();
+        }
+    }
+}
+class B {
+    /** @var Order[] */
+    private $items;
+    public function processB(): void {
+        foreach ($this->items as $item) {
+            $item->submit();
+        }
+    }
+}
+      `, PHP.php);
+      const { env } = buildTypeEnv(tree, 'php');
+      // Both $item bindings exist but may share the same key if scoped to method name
+      // Conservative: just verify at least one resolves correctly
+      expect(flatGet(env, '$item')).toBeDefined();
+    });
+  });
+
+  describe('match arm scoping — first-writer-wins regression', () => {
+    it('Rust: first match arm binding wins, later arms do not overwrite', () => {
+      const tree = parse(`
+fn process(opt: Option<User>) {
+    match opt {
+        Some(user) => user.save(),
+        None => {},
+    }
+}
+      `, Rust);
+      const { env } = buildTypeEnv(tree, 'rust');
+      // user should be typed from the first arm (Some unwrap)
+      // Known limitation: binding leaks across arms (first-writer-wins)
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('performance optimizations — coverage for new code paths', () => {
+    it('fastStripNullable: passes through simple identifier without stripping', () => {
+      const tree = parse('function f(user: User) { user.save(); }', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // lookup exercises fastStripNullable — "User" has no | or ? markers
+      const callNode = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('save'));
+      expect(typeEnv.lookup('user', callNode)).toBe('User');
+    });
+
+    it('fastStripNullable: strips nullable union type via full stripNullable', () => {
+      const tree = parse('function f(user: User | null) { user.save(); }', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      const callNode = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('save'));
+      expect(typeEnv.lookup('user', callNode)).toBe('User');
+    });
+
+    it('fastStripNullable: rejects bare nullable keyword', () => {
+      const tree = parse('function f(x: null) { x.save(); }', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      const callNode = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('save'));
+      expect(typeEnv.lookup('x', callNode)).toBeUndefined();
+    });
+
+    it('fastStripNullable: strips optional type suffix', () => {
+      const tree = parse(`
+class Foo {
+    process(user: User) {
+        user.save();
+    }
+}
+      `, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      const callNode = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('save'));
+      expect(typeEnv.lookup('user', callNode)).toBe('User');
+    });
+
+    it('SKIP_SUBTREE_TYPES: string literal subtrees do not affect type extraction', () => {
+      const tree = parse(`
+function f(user: User) {
+    const msg = "hello world this is a long string";
+    user.save();
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('interestingNodeTypes: non-declaration nodes skip extractTypeBinding', () => {
+      // Large code with many non-interesting nodes (binary expressions, calls, etc.)
+      const tree = parse(`
+function calculate(service: Service) {
+    const a = 1 + 2 + 3;
+    const b = true && false;
+    if (a > b) { service.run(); }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'service')).toBe('Service');
+    });
+  });
+
+  describe('null-check narrowing via patternOverrides (Phase C Task 7)', () => {
+    it('TS: if (x !== null) narrows User | null to User inside if-body', () => {
+      const code = `
+function process(x: User | null) {
+  if (x !== null) {
+    x.save();
+  }
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // Inside the if-body, x should resolve to User (nullable stripped)
+      const saveCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.save'));
+      expect(typeEnv.lookup('x', saveCall)).toBe('User');
+    });
+
+    it('TS: if (x !== undefined) narrows User | undefined to User inside if-body', () => {
+      const code = `
+function process(x: User | undefined) {
+  if (x !== undefined) {
+    x.save();
+  }
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      const saveCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.save'));
+      expect(typeEnv.lookup('x', saveCall)).toBe('User');
+    });
+
+    it('TS: if (x != null) narrows with loose inequality', () => {
+      const code = `
+function process(x: User | null) {
+  if (x != null) {
+    x.save();
+  }
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      const saveCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.save'));
+      expect(typeEnv.lookup('x', saveCall)).toBe('User');
+    });
+
+    it('TS: null-check narrowing does NOT leak to else branch', () => {
+      const code = `
+function process(x: User | null) {
+  if (x !== null) {
+    x.save();
+  } else {
+    x.fallback();
+  }
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // Inside else branch, x should retain original nullable type (User via fastStripNullable)
+      const fallbackCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.fallback'));
+      // The else branch is NOT in the narrowing range, so lookup falls through to
+      // the flat scopeEnv which has "User | null" — fastStripNullable strips it to User.
+      // This is expected: without negative narrowing (Phase 13A), else branches still get
+      // the base stripped type. The key invariant is that the narrowing override does NOT
+      // apply outside the if-body range.
+      expect(typeEnv.lookup('x', fallbackCall)).toBe('User');
+    });
+
+    it('TS: null-check narrowing does NOT apply outside the if block', () => {
+      const code = `
+function process(x: User | null) {
+  if (x !== null) {
+    x.save();
+  }
+  x.other();
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // After the if-block, x should use the flat scopeEnv (User | null → User via fastStripNullable)
+      const otherCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.other'));
+      expect(typeEnv.lookup('x', otherCall)).toBe('User');
+    });
+
+    it('TS: no narrowing when variable has no nullable type', () => {
+      const code = `
+function process(x: User) {
+  if (x !== null) {
+    x.save();
+  }
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // x is already non-nullable — no narrowing override is emitted, but lookup still works
+      const saveCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.save'));
+      expect(typeEnv.lookup('x', saveCall)).toBe('User');
+    });
+
+    it('TS: instanceof still works alongside null-check narrowing', () => {
+      const tree = parse(`
+function process(x) {
+  if (x instanceof User) {
+    x.save();
+  }
+}
+      `, TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'x')).toBe('User');
+    });
+
+    it('Kotlin: if (x != null) narrows nullable type inside if-body', () => {
+      const code = `
+fun process(x: User?) {
+    if (x != null) {
+        x.save()
+    }
+}`;
+      const tree = parse(code, Kotlin);
+      const typeEnv = buildTypeEnv(tree, 'kotlin');
+      const saveCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.save'));
+      expect(typeEnv.lookup('x', saveCall)).toBe('User');
+    });
+
+    it('Kotlin: when/is still works alongside null-check narrowing', () => {
+      const tree = parse(`
+fun process(x: Any) {
+    when (x) {
+        is User -> x.name
+    }
+}
+      `, Kotlin);
+      const { env } = buildTypeEnv(tree, 'kotlin');
+      expect(flatGet(env, 'x')).toBe('User');
+    });
+
+    it('C#: if (x != null) narrows nullable type inside if-body', () => {
+      const code = `
+class App {
+    void Process(User? x) {
+        if (x != null) {
+            x.Save();
+        }
+    }
+}`;
+      const tree = parse(code, CSharp);
+      const typeEnv = buildTypeEnv(tree, 'csharp');
+      const saveCall = tree.rootNode.descendantForIndex(tree.rootNode.text.indexOf('x.Save'));
+      expect(typeEnv.lookup('x', saveCall)).toBe('User');
+    });
+
+    it('C#: is_pattern_expression type pattern still works alongside null-check', () => {
+      const tree = parse(`
+class App {
+    void Process(object obj) {
+        if (obj is User user) {
+            user.Save();
+        }
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+  });
+
+  describe('multi-declarator type association (sizeBefore optimization)', () => {
+    it('Java: multi-declarator captures all variable names with shared type', () => {
+      const tree = parse(`
+class App {
+    void run() {
+        User a = getA(), b = getB();
+        a.save();
+        b.save();
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'a')).toBe('User');
+      expect(flatGet(env, 'b')).toBe('User');
+    });
+
+    it('Java: untyped declaration before typed does not get false type association', () => {
+      // `x` has no type annotation → must NOT be associated with the User type
+      // from the later declaration. This guards the sizeBefore skip logic.
+      const tree = parse(`
+class App {
+    void run() {
+        var x = getX();
+        User user = getUser();
+        user.save();
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBe('User');
+      // x should NOT have a type binding (it's untyped via var)
+      expect(flatGet(env, 'x')).toBeUndefined();
+    });
+
+    it('C#: multi-declarator with shared type captures both variables', () => {
+      const tree = parse(`
+class App {
+    void Run() {
+        User a = GetA(), b = GetB();
+        a.Save();
+        b.Save();
+    }
+}
+      `, CSharp);
+      const { env } = buildTypeEnv(tree, 'csharp');
+      expect(flatGet(env, 'a')).toBe('User');
+      expect(flatGet(env, 'b')).toBe('User');
+    });
+
+    it('Java: single declarator with type still works after optimization', () => {
+      const tree = parse(`
+class App {
+    void run() {
+        User user = getUser();
+        user.save();
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'user')).toBe('User');
+    });
+
+    it('Java: for-loop resolves element type from multi-declarator typed iterable', () => {
+      // Tests that declarationTypeNodes is correctly populated for multi-declarator
+      // variables, enabling for-loop element type resolution (Strategy 1).
+      const tree = parse(`
+class App {
+    void run() {
+        List<User> users = getUsers(), admins = getAdmins();
+        for (User u : users) {
+            u.save();
+        }
+    }
+}
+      `, Java);
+      const { env } = buildTypeEnv(tree, 'java');
+      expect(flatGet(env, 'users')).toBe('List');
+      expect(flatGet(env, 'admins')).toBe('List');
+      expect(flatGet(env, 'u')).toBe('User');
+    });
+  });
+
+  describe('constructorTypeMap (virtual dispatch detection)', () => {
+    it('Java: Animal a = new Dog() populates constructorTypeMap with Dog', () => {
+      const tree = parse(`
+class Animal {}
+class Dog extends Animal {}
+class App {
+    void run() {
+        Animal a = new Dog();
+    }
+}
+      `, Java);
+      const { constructorTypeMap } = buildTypeEnv(tree, 'java');
+      // Find the entry for variable 'a'
+      let ctorType: string | undefined;
+      for (const [key, value] of constructorTypeMap) {
+        if (key.endsWith('\0a')) { ctorType = value; break; }
+      }
+      expect(ctorType).toBe('Dog');
+    });
+
+    it('Java: same-type constructor does NOT populate constructorTypeMap', () => {
+      const tree = parse(`
+class User {}
+class App {
+    void run() {
+        User u = new User();
+    }
+}
+      `, Java);
+      const { constructorTypeMap } = buildTypeEnv(tree, 'java');
+      let found = false;
+      for (const [key] of constructorTypeMap) {
+        if (key.endsWith('\0u')) { found = true; break; }
+      }
+      expect(found).toBe(false);
+    });
+
+    it('TypeScript: const a: Animal = new Dog() — constructorTypeMap not populated (type on variable_declarator, not lexical_declaration)', () => {
+      // TS virtual dispatch for this pattern works through call-processor,
+      // not constructorTypeMap — the type annotation is on the child
+      // variable_declarator, not the outer lexical_declaration.
+      const tree = parse(`
+class Animal {}
+class Dog extends Animal {}
+const a: Animal = new Dog();
+      `, TypeScript.typescript);
+      const { env, constructorTypeMap } = buildTypeEnv(tree, 'typescript');
+      expect(flatGet(env, 'a')).toBe('Animal');
+      let found = false;
+      for (const [key] of constructorTypeMap) {
+        if (key.endsWith('\0a')) { found = true; break; }
+      }
+      expect(found).toBe(false);
+    });
+
+    it('C++: Animal* a = new Dog() populates constructorTypeMap', () => {
+      const tree = parse(`
+class Animal {};
+class Dog : public Animal {};
+void run() {
+    Animal* a = new Dog();
+}
+      `, CPP);
+      const { constructorTypeMap } = buildTypeEnv(tree, 'cpp');
+      let ctorType: string | undefined;
+      for (const [key, value] of constructorTypeMap) {
+        if (key.endsWith('\0a')) { ctorType = value; break; }
+      }
+      expect(ctorType).toBe('Dog');
+    });
+
+    it('C#: Animal a = new Dog() populates constructorTypeMap', () => {
+      const tree = parse(`
+class Animal {}
+class Dog : Animal {}
+class App {
+    void Run() {
+        Animal a = new Dog();
+    }
+}
+      `, CSharp);
+      const { constructorTypeMap } = buildTypeEnv(tree, 'csharp');
+      let ctorType: string | undefined;
+      for (const [key, value] of constructorTypeMap) {
+        if (key.endsWith('\0a')) { ctorType = value; break; }
+      }
+      expect(ctorType).toBe('Dog');
+    });
+
+    it('C#: implicit new() does NOT populate constructorTypeMap (type from declaration)', () => {
+      const tree = parse(`
+class Dog {}
+class App {
+    void Run() {
+        Dog d = new();
+    }
+}
+      `, CSharp);
+      const { env, constructorTypeMap } = buildTypeEnv(tree, 'csharp');
+      // d should be bound via declared type path
+      expect(flatGet(env, 'd')).toBe('Dog');
+      // constructorTypeMap should NOT have an entry (same type, no override needed)
+      let found = false;
+      for (const [key] of constructorTypeMap) {
+        if (key.endsWith('\0d')) { found = true; break; }
+      }
+      expect(found).toBe(false);
+    });
+  });
+
+  describe('Phase 14: importedBindings seeding', () => {
+    it('seeds imported bindings into file scope for unbound names', () => {
+      // Source has no local declaration of 'config', so the imported binding wins
+      const tree = parse('', TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript', {
+        importedBindings: new Map([['config', 'Config']]),
+      });
+      const fileScope = env.get('');
+      expect(fileScope?.get('config')).toBe('Config');
+    });
+
+    it('local declarations take precedence over imported bindings', () => {
+      // Source declares config: AppConfig — imported binding for 'config' must not overwrite it
+      const tree = parse('const config: AppConfig = getConfig();', TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript', {
+        importedBindings: new Map([['config', 'Config']]),
+      });
+      const fileScope = env.get('');
+      // AppConfig from the local annotation wins over the imported 'Config'
+      expect(fileScope?.get('config')).toBe('AppConfig');
+    });
+
+    it('does nothing when importedBindings is empty', () => {
+      const tree = parse('const user: User = getUser();', TypeScript.typescript);
+      const { env: envWithout } = buildTypeEnv(tree, 'typescript');
+      const { env: envWith } = buildTypeEnv(tree, 'typescript', {
+        importedBindings: new Map(),
+      });
+      // Both envs should produce the same file-scope content
+      const scopeWithout = envWithout.get('');
+      const scopeWith = envWith.get('');
+      expect(scopeWith?.get('user')).toBe(scopeWithout?.get('user'));
+      expect(scopeWith?.size).toBe(scopeWithout?.size);
+    });
+
+    it('seeds multiple bindings', () => {
+      const tree = parse('', TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript', {
+        importedBindings: new Map([
+          ['user', 'User'],
+          ['config', 'Config'],
+        ]),
+      });
+      const fileScope = env.get('');
+      expect(fileScope?.get('user')).toBe('User');
+      expect(fileScope?.get('config')).toBe('Config');
+    });
+
+    it('seeded bindings are reachable via lookup from a nested call node', () => {
+      // A call inside a function should still be able to look up a file-scope seeded binding
+      const code = `
+function process() {
+  config.validate();
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        importedBindings: new Map([['config', 'Config']]),
+      });
+
+      const calls: any[] = [];
+      function findCalls(node: any) {
+        if (node.type === 'call_expression') calls.push(node);
+        for (let i = 0; i < node.childCount; i++) findCalls(node.child(i));
+      }
+      findCalls(tree.rootNode);
+
+      // config.validate() — lookup 'config' from inside the process function scope
+      expect(typeEnv.lookup('config', calls[0])).toBe('Config');
+    });
+
+    it('seeds bindings with no conflict when local file has unrelated declarations', () => {
+      // File has 'user' declared locally; 'config' comes from importedBindings
+      const tree = parse('const user: User = getUser();', TypeScript.typescript);
+      const { env } = buildTypeEnv(tree, 'typescript', {
+        importedBindings: new Map([['config', 'Config']]),
+      });
+      const fileScope = env.get('');
+      // Local binding preserved
+      expect(fileScope?.get('user')).toBe('User');
+      // Imported binding added for the name that had no local declaration
+      expect(fileScope?.get('config')).toBe('Config');
+    });
+  });
+
+  describe('importedReturnTypes (Phase 14 E3)', () => {
+    // Minimal mock SymbolTable that returns a known callable
+    const makeSymbolTable = (
+      callables: Array<{ name: string; returnType?: string }>,
+    ) => ({
+      lookupFuzzyCallable: (name: string) =>
+        callables
+          .filter(c => c.name === name)
+          .map(c => ({ nodeId: 'n1', filePath: 'src.ts', type: 'Function' as const, returnType: c.returnType })),
+      lookupFuzzy: () => [],
+      lookupExact: () => undefined,
+      lookupExactFull: () => undefined,
+      add: () => {},
+      getStats: () => ({ fileCount: 0, globalSymbolCount: 0 }),
+      clear: () => {},
+    });
+
+    it('SymbolTable has unambiguous match → uses it, ignores cross-file', () => {
+      // SymbolTable knows getConfig() returns Config (SymbolType)
+      // importedReturnTypes says getConfig → WrongType — SymbolTable must win
+      const symbolTable = makeSymbolTable([{ name: 'getConfig', returnType: 'Config' }]);
+      const tree = parse('const c = getConfig();', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        symbolTable: symbolTable as any,
+        importedReturnTypes: new Map([['getConfig', 'WrongType']]),
+      });
+      // SymbolTable result (Config) wins over cross-file fallback (WrongType)
+      expect(flatGet(typeEnv.env, 'c')).toBe('Config');
+    });
+
+    it('SymbolTable has no match (0 results) → falls back to cross-file', () => {
+      // SymbolTable knows nothing about getConfig
+      const symbolTable = makeSymbolTable([]);
+      const tree = parse('const c = getConfig();', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        symbolTable: symbolTable as any,
+        importedReturnTypes: new Map([['getConfig', 'Config']]),
+      });
+      // Cross-file fallback provides Config
+      expect(flatGet(typeEnv.env, 'c')).toBe('Config');
+    });
+
+    it('SymbolTable has 2+ matches (ambiguous) → returns undefined, NO cross-file fallback', () => {
+      // Two overloads of process() — ambiguous → must NOT fall back to cross-file
+      const symbolTable = makeSymbolTable([
+        { name: 'process', returnType: 'User' },
+        { name: 'process', returnType: 'Admin' },
+      ]);
+      const tree = parse('const r = process();', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        symbolTable: symbolTable as any,
+        importedReturnTypes: new Map([['process', 'User']]),
+      });
+      // Ambiguous → conservative → no binding produced
+      expect(flatGet(typeEnv.env, 'r')).toBeUndefined();
+    });
+
+    it('no SymbolTable → uses cross-file return types directly', () => {
+      const tree = parse('const c = getConfig();', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        importedReturnTypes: new Map([['getConfig', 'Config']]),
+      });
+      expect(flatGet(typeEnv.env, 'c')).toBe('Config');
+    });
+
+    it('cross-file has entry but SymbolTable covers it → SymbolTable wins', () => {
+      // SymbolTable provides the authoritative return type; cross-file entry is ignored
+      const symbolTable = makeSymbolTable([{ name: 'getUser', returnType: 'User' }]);
+      const tree = parse('const u = getUser();', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        symbolTable: symbolTable as any,
+        importedReturnTypes: new Map([['getUser', 'CrossFileUser']]),
+      });
+      // SymbolTable result (User) wins
+      expect(flatGet(typeEnv.env, 'u')).toBe('User');
+    });
+
+    it('does nothing when importedReturnTypes is absent', () => {
+      const tree = parse('const c = getConfig();', TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript');
+      // No annotation, no SymbolTable, no cross-file → no binding
+      expect(flatGet(typeEnv.env, 'c')).toBeUndefined();
+    });
+
+    it('resolved cross-file callee enables downstream call edges via lookup', () => {
+      // File has: const c = getConfig(); c.validate();
+      // importedReturnTypes maps getConfig → Config
+      // After fixpoint, c should be typed as Config, making lookup('c', ...) return 'Config'
+      const code = `
+function process() {
+  const c = getConfig();
+  c.validate();
+}`;
+      const tree = parse(code, TypeScript.typescript);
+      const typeEnv = buildTypeEnv(tree, 'typescript', {
+        importedReturnTypes: new Map([['getConfig', 'Config']]),
+      });
+
+      const calls: any[] = [];
+      function findCalls(node: any) {
+        if (node.type === 'call_expression') calls.push(node);
+        for (let i = 0; i < node.childCount; i++) findCalls(node.child(i));
+      }
+      findCalls(tree.rootNode);
+
+      // calls[0] = getConfig(), calls[1] = c.validate()
+      // From inside process(), c should resolve to Config
+      const validateCall = calls.find((n: any) => n.text.includes('validate'));
+      expect(validateCall).toBeDefined();
+      expect(typeEnv.lookup('c', validateCall)).toBe('Config');
+    });
+  });
+
 });
diff --git a/gitnexus/vitest.config.ts b/gitnexus/vitest.config.ts
index 15700a08f..591f06766 100644
--- a/gitnexus/vitest.config.ts
+++ b/gitnexus/vitest.config.ts
@@ -2,14 +2,21 @@ import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
   test: {
+    // Shared settings — inherited by all projects via extends: true
     globalSetup: ['test/global-setup.ts'],
-    include: ['test/**/*.test.ts'],
     testTimeout: 30000,
+    hookTimeout: 120000,
     pool: 'forks',
     globals: true,
-    setupFiles: ['test/setup.ts'],
     teardownTimeout: 3000,
-    dangerouslyIgnoreUnhandledErrors: true, // LadybugDB N-API destructor segfaults on fork exit — not a test failure
+    // N-API destructors can crash worker forks on macOS during process exit.
+    // This is independent of the QueryResult lifetime fix in @ladybugdb/core 0.15.2 —
+    // it's a vitest forks + native addon interaction where destructors run in
+    // arbitrary order at exit. Tests themselves pass; only the exit crashes.
+    // TODO: remove once LadybugDB fixes all N-API destructor ordering issues.
+    dangerouslyIgnoreUnhandledErrors: true,
+
+    // Coverage stays at root (not supported in project configs)
     coverage: {
       provider: 'v8',
       include: ['src/**/*.ts'],
@@ -28,5 +35,55 @@ export default defineConfig({
         autoUpdate: true,
       },
     },
+
+    // LadybugDB's native mmap addon causes file-lock conflicts when vitest
+    // runs lbug test files in parallel forks on Windows.  The 'lbug-db'
+    // project forces sequential execution (fileParallelism: false).
+    //
+    // Each file runs in its own fork — the fork exits after the file
+    // completes, triggering an N-API destructor segfault that is caught
+    // by dangerouslyIgnoreUnhandledErrors.  Tests themselves pass; only
+    // the exit crashes.  This is safer than isolate: false, which causes
+    // native state corruption after 2-3 open/close cycles in the same fork.
+    projects: [
+      {
+        extends: true,
+        test: {
+          name: 'lbug-db',
+          include: [
+            'test/integration/lbug-core-adapter.test.ts',
+            'test/integration/lbug-pool.test.ts',
+            'test/integration/lbug-pool-stability.test.ts',
+            'test/integration/local-backend.test.ts',
+            'test/integration/local-backend-calltool.test.ts',
+            'test/integration/search-core.test.ts',
+            'test/integration/search-pool.test.ts',
+            'test/integration/augmentation.test.ts',
+            'test/integration/staleness-and-stability.test.ts',
+          ],
+          fileParallelism: false,
+          sequence: { groupOrder: 1 },
+        },
+      },
+      {
+        extends: true,
+        test: {
+          name: 'default',
+          sequence: { groupOrder: 2 },
+          include: ['test/**/*.test.ts'],
+          exclude: [
+            'test/integration/lbug-core-adapter.test.ts',
+            'test/integration/lbug-pool.test.ts',
+            'test/integration/lbug-pool-stability.test.ts',
+            'test/integration/local-backend.test.ts',
+            'test/integration/local-backend-calltool.test.ts',
+            'test/integration/search-core.test.ts',
+            'test/integration/search-pool.test.ts',
+            'test/integration/augmentation.test.ts',
+            'test/integration/staleness-and-stability.test.ts',
+          ],
+        },
+      },
+    ],
   },
 });
diff --git a/type-resolution-roadmap.md b/type-resolution-roadmap.md
new file mode 100644
index 000000000..b43298ce5
--- /dev/null
+++ b/type-resolution-roadmap.md
@@ -0,0 +1,272 @@
+# Type Resolution Roadmap
+
+This roadmap describes the evolution of GitNexus's type-resolution layer from a receiver-disambiguation aid into a production-grade static-analysis foundation.
+
+---
+
+## Principles
+
+- **stay conservative** — prefer missing a binding over introducing a misleading one
+- **prefer explainable inference over clever but brittle inference**
+- **limit performance overhead during ingestion**
+- **keep per-language extractors explicit rather than over-generic**
+- **separate "better receiver resolution" from "compiler-grade typing"**
+
+The goal is not to build a compiler. The goal is to support high-value static analysis for call graphs, impact analysis, context gathering, and downstream graph features.
+
+---
+
+## Delivered Phases
+
+### Phase 7: Cross-Scope and Return-Aware Propagation ✅
+
+**Shipped in** `feat/phase7-type-resolution`.
+
+- `ReturnTypeLookup` interface threading return-type knowledge into TypeEnv
+- Iterable call-expression support across 7 languages (Go, TS, Python, Rust, Java, Kotlin, C#)
+- PHP class-level `@var` property typing for `$this->property` foreach (Strategy C)
+- `pendingCallResults` infrastructure (Tier 2b loop + `PendingAssignment` union) — activated by Phase 9
+
+### Phase 8: Field and Property Type Resolution ✅
+
+**Shipped in** `feat/phase8-field-property-type-resolution`.
+
+- SymbolTable `fieldByOwner` index — O(1) field lookup by `ownerNodeId\0fieldName`
+- `HAS_PROPERTY` edge type + `declaredType` on Property symbols
+- Deep chain resolution up to 3 levels (`user.address.city.getName()`) across 10 languages
+- Mixed field+method chains via unified `MixedChainStep[]` (`svc.getUser().address.save()`)
+- Type-preserving stdlib passthroughs (`unwrap`, `clone`, `expect`, etc.)
+- `ACCESSES` edge type — read/write field access tracking across 12 languages
+- C++ `field_declaration` capture, `field_expression` receiver support
+- Rust unit struct instantiation, Ruby YARD `@return` for `attr_accessor`
+
+### Phase 9 + 9C: Return-Type-Aware Variable Binding ✅
+
+**Shipped in** `feat/phase9-call-result-binding` (PR #379).
+
+- Simple call-result binding: `const user = getUser(); user.save()` across 11 languages
+- Unified fixpoint loop replacing sequential Tier 2b/2a — handles 4 binding kinds (`callResult`, `copy`, `fieldAccess`, `methodCallResult`) at arbitrary depth
+- Field access binding: `const addr = user.address` resolves via `lookupFieldByOwner` + `declaredType`
+- Method-call-result binding: `const city = addr.getCity()` resolves via `lookupFuzzyCallable` filtered by `ownerId`
+- Fixpoint iterates until stable (max 10 iterations), enabling chains like `getUser() → .address → .getCity() → city.save()`
+- Reverse-order copy chains now resolve (`const b = a; const a: User = x` → both resolve)
+
+### Milestone D — Completeness ✅
+
+**Shipped in** `feat/type-resolution-milestone-d` (PR #387). Consolidated original Phases 10–13 into 3 balanced phases.
+
+#### Phase A: Fixpoint Completeness ✅
+
+- Post-fixpoint for-loop replay (ex-9B): `pendingForLoops` collection + replay after fixpoint resolves iterable types
+- Object destructuring via `fieldAccess` items (TS/JS `object_pattern`, Rust `struct_pattern`) — no new `destructure` PendingAssignment variant needed
+- Extracted `resolveFixpointBindings()` helper with exhaustive switch + `classDefCache` memoization
+
+#### Phase B: Inheritance & Receivers ✅
+
+- `BuildTypeEnvOptions` interface replacing positional params for `buildTypeEnv`
+- Heritage pre-pass constructing `parentMap` from tree-sitter query matches (not graph edges — heritage-processor runs in parallel)
+- MRO-aware `walkParentChain()` (depth 5, cycle-safe BFS) for `resolveFieldType` and `resolveMethodReturnType`
+- `this`/`self`/`$this`/`Me` receiver substitution via `substituteThisReceiver` hook
+- Go `inc_statement`/`dec_statement` write-access queries
+
+#### Phase C: Branch-Sensitive Narrowing ✅
+
+- Null-check narrowing (`!= null`, `!== undefined`, `is not null`) via position-indexed `patternOverrides`
+- Supported for TS, Kotlin, C# — renamed `PATTERN_BRANCH_TYPES` → `NARROWING_BRANCH_TYPES`
+- Bug fix: Kotlin narrowing required 3 fixes in `jvm.ts` (AST node type `equality_expression`, anonymous `null` node, `nullable_type` parameter fallback)
+
+#### Deferred from Milestone D
+
+- **Type predicates (13A):** Cross-function analysis for niche TS `x is User` feature — deferred
+- **Swift parity (11D):** tree-sitter-swift Node 22 issues — all Swift work consolidated to Phase S
+- **Positional destructuring (12C):** Python/Kotlin/C#/C++ tuple-position-to-field mapping — deferred
+- **Discriminated union narrowing (13C):** Needs tagged union metadata not in SymbolTable — deferred
+
+#### Integration Test Coverage
+
+17 fixture directories, 23 describe blocks, 705 lines of test code covering all 11 languages:
+- Grandparent MRO (depth-2 C→B→A): TS, JS, Kotlin, C#, C++, Java, PHP, Python, Ruby
+- Object destructuring: TS, JS
+- Struct destructuring: Rust
+- Post-fixpoint for-loop replay: TS, JS
+- Go inc/dec write access
+- Null-check narrowing: TS, C#, Kotlin
+
+---
+
+## Open Phases
+
+### Phase P: Polymorphism & Overloading
+
+**Plan:** `docs/plans/2026-03-19-feat-polymorphism-overloading-type-resolution-plan.md`
+
+Four incremental phases:
+1. **Parameter type metadata** — extend `SymbolDefinition` with `parameterTypes: string[]` extracted during parsing — **DELIVERED**
+2. **Overload disambiguation** — filter overloaded methods by argument literal types at call sites — **DELIVERED** (Java, Kotlin, C#, C++, TypeScript)
+3. **Constructor-visible virtual dispatch** — `Base b = new Derived(); b.method()` resolves to `Derived#method` when constructor type is a known subclass — **DELIVERED** (Java, C#, TS, C++, Kotlin via `detectConstructorType` hook, C++ smart pointers via `make_shared`/`make_unique`)
+4. **Optional parameter arity resolution** — calls with omitted optional/default args now resolve via `requiredParameterCount` range check — **DELIVERED** (TS, Python, Kotlin, C#, C++, PHP, Ruby)
+5. **Covariant return type awareness** — prefer child's return type over inherited definition
+
+Languages benefiting: Java, Kotlin, C#, C++, TypeScript (overloading). All OOP languages (virtual dispatch).
+
+**Impact: High | Effort: High** (P.1–P.4 delivered; P.5 covariant return types remains open)
+
+---
+
+### Phase S: Swift Parity
+
+**Blocked on** tree-sitter-swift Node 22 compatibility.
+
+- For-loop element binding (from Phase 10)
+- Assignment chains: copy, callResult, fieldAccess, methodCallResult (from Phase 11D)
+- `guard let` narrowing (from Phase 13B) — uses scopeEnv path, not `patternOverrides`
+
+**Impact: Medium | Effort: Medium**
+
+---
+
+### Phase 14: Cross-File Binding Propagation ✅
+
+**Shipped in** `feat/phase14-cross-file-binding-propagation`.
+
+Three enrichment mechanisms:
+- **E1:** `seedCrossFileReceiverTypes` — pre-seeds `receiverTypeName` for single-hop imported receivers (zero re-parse)
+- **E2:** `ExportedTypeMap` seeded into `importedBindings` for re-resolution pass
+- **E3:** `buildImportedReturnTypes` — cross-file return types for imported callables (local-first, SymbolTable takes precedence)
+
+Architecture:
+- Topological import ordering via Kahn's BFS (`topologicalLevelSort`, returns `{ levels, cycleCount }`)
+- Cycle-safe: files in cycles grouped in final level, no cross-cycle propagation
+- `runCrossFileBindingPropagation()` extracted as standalone pipeline phase
+- `synthesizeWildcardImportBindings()` expands whole-module imports (Go/Ruby/C/C++/Swift) into per-symbol namedImportMap entries from graph-exported symbols — runs before Phase 14
+- Worker path: `buildExportedTypeMapFromGraph` collects Tier 0 (annotated) exports only
+- Sequential path: `collectExportedBindings` captures full fixpoint-inferred exports
+
+**Per-language Phase 14 coverage:**
+| Language | namedImportMap | ExportedTypeMap (E1/E2) | E3 (importedReturnTypes) | Benefit |
+|----------|:-:|:-:|:-:|---|
+| TypeScript | Full (named imports) | File-scope vars | Full | **High** |
+| JavaScript | Full (named imports) | File-scope vars | Full | **High** |
+| Python | from-imports | File-scope vars | Full | **High** |
+| Kotlin | Top-level fns | Top-level props | Full | **High** |
+| Rust | use clauses | Limited | Full | **High** |
+| Go | Synthesized¹ | Exported symbols | Full | **Medium** |
+| Ruby | Synthesized¹ | Exported symbols | Full | **Medium** |
+| C/C++ | Synthesized¹ | Exported symbols | Full | **Medium** |
+| Swift | Synthesized¹ | Exported symbols | Full | **Low** (Phase S blocked) |
+| PHP | use classes | Inert (class-scope) | Inert (no fn imports) | **Marginal** |
+| Java | Classes + static methods | Inert (no file-scope) | Via SymbolTable | **Medium** |
+| C# | Alias + `using static` | Inert (no file-scope) | Via SymbolTable | **Medium** |
+
+¹ Whole-module import languages: namedImportMap entries synthesized from graph-exported symbols via `synthesizeWildcardImportBindings()` (capped at 1000 per file)
+
+**Named binding extraction details:**
+- Java: `import static X.Y.method` now captured (static modifier detection). Ambiguous static imports (same method from multiple classes) fall through to Tier 2a for arity narrowing.
+- C#: `using static NS.Type;` now captured (last segment as class binding). Non-alias `using NS;` remains unsupported (namespace import requires type inference).
+
+**Resolved limitations (this PR):**
+- ~~Worker path vs sequential path quality split~~ — workers now return file-scope TypeEnv bindings; main thread merges fixpoint-inferred exports into ExportedTypeMap (filtered by graph `isExported`)
+- ~~`lookupRawReturnType` no cross-file fallback~~ — separate `importedRawReturnTypes` map stores raw declared types (e.g., `User[]`) for for-loop element extraction via `extractElementTypeFromString`
+- ~~C++ header method declarations~~ — tree-sitter query fix: `field_identifier` added to declaration pattern alongside `identifier`, plus pointer/reference return type variants
+
+**Impact: High | Effort: High** — delivered
+
+---
+
+## Dependency Graph
+
+```
+Milestone D (Phases A, B, C) ✅ ──┐
+                                   ├──→ Phase 14 (cross-file) ✅
+Phase P (polymorphism) ───────────┤
+                                   │
+Phase S (Swift parity) ───────────┘
+
+Phase P.1–P.4 are delivered. P.5 (covariant return types) remains open.
+Phase P and Phase S are independent of each other and Phase 14.
+Phase 14 is delivered. Remaining open: Phase P.5, Phase S.
+```
+
+---
+
+## Language-Specific Gaps (remaining)
+
+### Swift
+- For-loop element binding → Phase S
+- Assignment chains (copy, callResult, fieldAccess, methodCallResult) → Phase S
+- `guard let` narrowing → Phase S
+
+### Kotlin
+- ~~Virtual dispatch: `Dog()` uses `call_expression` (no `new` keyword)~~ — **RESOLVED** via `detectConstructorType` hook
+
+### All languages
+- ~~Cross-file binding propagation → Phase 14~~ — **DELIVERED** for all 13 languages via two mechanisms: (1) named import extraction (TS/JS/Python/Kotlin/Rust/PHP/Java/C#), (2) wildcard import synthesis from graph-exported symbols (Go/Ruby/C/C++/Swift). Remaining gap: C# non-alias `using NS;` (namespace import, requires type inference).
+
+---
+
+## Milestones
+
+### Milestone A — Inference Expansion ✅ (Phase 7)
+
+Loop inference, `ReturnTypeLookup`, PHP Strategy C.
+
+### Milestone B — Structural Member Typing ✅ (Phase 8)
+
+Field/property maps, deep chains, mixed chains, stdlib passthroughs.
+
+### Milestone C — Static-Analysis Foundation ✅ (Phase 9 + 9C)
+
+Unified fixpoint loop, call-result binding, field access binding, method-call-result binding, arbitrary-depth chain propagation.
+
+### Milestone D — Completeness ✅ (Phases A, B, C)
+
+Consolidated Phases 10–13 into 3 balanced phases. Loop-fixpoint bridge, MRO-aware inheritance walking, `this`/`self` resolution, object/struct destructuring, null-check narrowing. Kotlin null-check bug fix. Full 11-language integration test coverage.
+
+### Milestone E — Cross-Boundary ✅ (Phase 14)
+
+Export-type index, cross-file binding propagation. Full coverage for TS/JS/Python/Kotlin. Marginal for PHP. Inert for Java/C#/Go/Ruby/C/C++ (relies on Phase 9 SymbolTable).
+
+### Milestone P — Polymorphism & Overloading (Phase P)
+
+Parameter type metadata, overload disambiguation, constructor-visible virtual dispatch (including Kotlin `detectConstructorType` and C++ smart pointer factories), optional parameter arity resolution, covariant return types (open).
+
+### Milestone S — Swift Parity (Phase S)
+
+For-loop binding, assignment chains, `guard let` narrowing. Blocked on tree-sitter-swift Node 22.
+
+---
+
+## Open Design Questions
+
+| # | Question | Status |
+|---|----------|--------|
+| 1 | Where should field-type metadata live? | ✅ Resolved: `fieldByOwner` index in SymbolTable |
+| 2 | How should ambiguity be represented? | ✅ Resolved: keep `undefined`. Conservative approach proven through 9 phases. |
+| 3 | How much receiver context for return types? | ✅ Resolved: Phase 9C `resolveMethodReturnType` filters by `ownerId`. |
+| 4 | How much branch sensitivity? | ✅ Resolved: type predicates + null checks only. No control-flow graph. (Phase 13) |
+| 5 | Field typing and chain typing — one phase or two? | ✅ Resolved: incremental delivery within phases (Phase 8/8A precedent). |
+| 6 | Phase 9B vs Phase 10? | ✅ Resolved: Phase 10 supersedes 9B via post-fixpoint replay. |
+
+---
+
+## What "Production-Grade" Means Here
+
+For GitNexus, production-grade does **not** mean replacing a language compiler. The target:
+
+- Strong receiver-constrained call resolution across common language idioms
+- Reliable handling of typed loops, constructors, and common patterns
+- Return-type propagation for service/repository code
+- Field/property knowledge for chained-member analysis
+- Inheritance-aware lookups
+- Conservative behavior under ambiguity
+- Predictable performance during indexing
+
+That supports: better call graphs, more accurate impact analysis, stronger AI context assembly, more trustworthy graph traversal.
+
+---
+
+## Summary
+
+**Complete:** Phases 7, 8, 9, 9C, Milestone D (A, B, C) — explicit types, constructor inference, loop inference, field/property resolution, deep chains, mixed chains, stdlib passthroughs, comment-based types, unified fixpoint with 4 binding kinds, arbitrary-depth chain propagation, MRO-aware inheritance walking, this/self resolution, object/struct destructuring, null-check narrowing — across 11 languages with full integration test coverage.
+
+**Next:** Phase 14 (cross-file binding propagation) — the architectural capstone. Phase S (Swift parity) is independent and unblocked once tree-sitter-swift Node 22 is resolved.
diff --git a/type-resolution-system.md b/type-resolution-system.md
new file mode 100644
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--- /dev/null
+++ b/type-resolution-system.md
@@ -0,0 +1,486 @@
+# Type Resolution System
+
+GitNexus's type resolution system maps variables to likely declared types across the supported languages so the ingestion pipeline can perform **receiver-constrained call resolution**.
+
+When the code contains a call such as `user.save()`, the resolver tries to determine that `user` is a `User`, allowing call resolution to prefer `User#save` over unrelated methods such as `Repo#save`.
+
+This system is designed to be:
+
+- **Conservative** — it prefers missing a binding over introducing a misleading one
+- **Walk + fixpoint** — bindings are collected during a single AST walk, then a unified fixpoint loop iterates over pending assignments (copy, callResult, fieldAccess, methodCallResult) until no new bindings are produced
+- **Scope-aware** — function-local bindings are isolated from file-level bindings
+- **Per-file with cross-file seeding** — the environment is built for one file at a time, but Phase 14 seeds upstream bindings (imported types, return types) into the file scope before the fixpoint for all 13 languages
+
+It is **not** a full compiler type checker. Its job is to recover enough type information to improve call-edge accuracy during ingestion.
+
+---
+
+## Purpose in the Pipeline
+
+Type resolution sits between parsing and call resolution.
+
+```text
+parse-worker.ts
+     │
+     ▼
+buildTypeEnv(tree, language, symbolTable?)
+     │
+     ├──► TypeEnvironment.lookup(varName, callNode)
+     │         │
+     │         ▼
+     │    call-processor.ts
+     │    - resolves receiver type for method calls
+     │    - filters candidates by receiver match
+     │    - verifies deferred constructor / initializer bindings
+     │
+     └──► discarded after file processing
+```
+
+The `TypeEnvironment` is built once per file. `call-processor.ts` then uses `lookup()` to determine receiver types and narrow candidate symbols from the `SymbolTable`.
+
+---
+
+## Architecture
+
+```text
+                                 ┌──────────────────────┐
+                                 │     type-env.ts      │
+                                 │                      │
+                                 │  buildTypeEnv()      │
+                                 │  - Single AST walk   │
+                                 │  - Scope tracking    │
+                                 │  - Tier orchestration│
+                                 └──────────┬───────────┘
+                                            │ dispatches to
+                    ┌───────────────────────┬┴┬────────────────────────┐
+                    │                       │ │                        │
+          ┌─────────▼──────────┐  ┌─────────▼─▼─────────┐  ┌──────────▼─────────┐
+          │   shared.ts        │  │  <language>.ts      │  │    types.ts        │
+          │                    │  │                      │  │                    │
+          │  Container table   │  │  Per-language        │  │  Extractor         │
+          │  Type helpers      │  │  extractors          │  │  interface defs    │
+          │  Generic helpers   │  │  (shared + per-lang) │  │                    │
+          └────────────────────┘  └──────────────────────┘  └────────────────────┘
+```
+
+### Main files
+
+| File | Purpose |
+|------|---------|
+| `type-env.ts` | Core engine. Walks the AST once, tracks scopes, collects bindings, and exposes `buildTypeEnv()` plus the `TypeEnvironment` interface. |
+| `types.ts` | TypeScript interfaces for extractor hooks such as `TypeBindingExtractor`, `ForLoopExtractor`, and `PatternBindingExtractor`. |
+| `shared.ts` | Language-agnostic helpers such as `extractSimpleTypeName`, `extractElementTypeFromString`, `resolveIterableElementType`, `CONTAINER_DESCRIPTORS`, and `TYPED_PARAMETER_TYPES`. |
+| `index.ts` | Dispatch map from `SupportedLanguages` to `LanguageTypeConfig`. |
+| `typescript.ts` | TypeScript and JavaScript extractors, including JSDoc support. |
+| `jvm.ts` | Java and Kotlin extractors. |
+| `csharp.ts` | C# extractors. |
+| `go.ts` | Go extractors, including range semantics. |
+| `rust.ts` | Rust extractors, including `if let`, match-related handling, and `Self` resolution. |
+| `python.ts` | Python extractors, including `match` / `case` handling. |
+| `php.ts` | PHP extractors, including PHPDoc support. |
+| `ruby.ts` | Ruby extractors, including YARD support. |
+| `swift.ts` | Swift extractors. Currently the most minimal configuration. |
+| `c-cpp.ts` | Shared C / C++ extractors. |
+
+---
+
+## Supported Languages
+
+The current type-resolution layer supports **13 languages**:
+
+- TypeScript
+- JavaScript
+- Python
+- Java
+- Kotlin
+- C#
+- Go
+- Rust
+- PHP
+- Ruby
+- Swift
+- C
+- C++
+
+Not all languages have the same level of coverage. Swift remains the most minimal. C and some C++ cases naturally benefit less from receiver typing than object-oriented languages.
+
+---
+
+## Design Constraints
+
+The type resolution layer is intentionally narrower than a compiler-grade type system.
+
+It does:
+
+- resolve variable types from declarations, parameters, initializers, loops, and selected pattern constructs
+- normalize common wrappers such as nullable types and generic containers
+- improve receiver matching during call resolution
+- verify some ambiguous initializer bindings against the `SymbolTable`
+
+It does not:
+
+- perform full semantic type checking
+- guarantee resolution for every ambiguous construct
+
+It now does (Phase 14):
+
+- run a unified fixpoint loop per file for copy/callResult/fieldAccess/methodCallResult chains
+- propagate inferred bindings across files for all 13 supported languages:
+  - **Named import extraction** (TS/JS/Python/Kotlin/Rust/PHP/Java/C#): per-symbol bindings extracted from import AST nodes
+  - **Wildcard import synthesis** (Go/Ruby/C/C++/Swift): namedImportMap entries synthesized from graph-exported symbols via `synthesizeWildcardImportBindings()`, enabling cross-file propagation for whole-module-import languages
+- seed imported bindings into file scope after walk, before fixpoint (local declarations always win)
+
+---
+
+## TypeEnvironment Model
+
+`buildTypeEnv()` returns a `TypeEnvironment` that contains:
+
+- scoped bindings collected from the current file
+- deferred constructor / initializer binding candidates
+- lookup helpers used by call resolution
+- pattern override data for branch-local narrowing where supported
+
+### Scope model
+
+The environment is scope-aware so identical variable names in different functions do not collide.
+
+```text
+File scope ('')
+├── config → Config
+├── users → Map
+│
+├── processUsers@100
+│   ├── user → User
+│   └── alias → User
+│
+└── processRepos@200
+    └── repo → Repo
+```
+
+### Scope keys
+
+- `''` for file scope
+- `functionName@startIndex` for function-local scope
+
+These scope keys are also used later when verifying deferred bindings in call processing, so any future change to scope-key format must stay consistent across both layers.
+
+---
+
+## Lookup Semantics
+
+`TypeEnvironment.lookup()` resolves types in this effective order:
+
+1. special receivers
+   - `this`, `self`, `$this` → enclosing class
+   - `super`, `base`, `parent` → parent class
+2. position-indexed pattern overrides
+3. function-local scope
+4. file-level scope
+
+Special receivers are handled as a dedicated fast path rather than ordinary lexical bindings.
+
+---
+
+## Resolution Tiers
+
+Bindings are collected during the same AST walk. Higher-confidence sources win over weaker inference.
+
+### Tier 0: Explicit Type Annotations
+
+Direct extraction from AST type nodes.
+
+```typescript
+// TypeScript
+const user: User = getUser()
+
+// Java
+User user = getUser()
+
+// Go
+var user User
+
+// Rust
+let user: User = get_user()
+
+// Python
+user: User = get_user()
+```
+
+`extractDeclaration()` reads the declaration type node and normalizes it through `extractSimpleTypeName()`.
+
+Parameters are handled separately by `extractParameter()` using the same normalization logic. The shared `TYPED_PARAMETER_TYPES` set controls which AST node types are treated as typed parameters.
+
+### Tier 0b: For-Loop Element Type Resolution
+
+Also referred to as **Tier 1c** in Phase 6 PR and test naming.
+
+For-each style loops often introduce a variable with no explicit type. In those cases, the resolver derives the loop variable type from the iterable's container type.
+
+```csharp
+foreach (var user in users) { user.Save(); }
+
+// TypeScript
+for (const user of users) { user.save(); }
+
+// Rust
+for user in users { user.save(); }
+```
+
+This is handled by `resolveIterableElementType()` through a three-step cascade:
+
+1. **Declaration type nodes**  
+   Uses raw type annotation nodes when available, including cases such as `User[]` or `List[User]`.
+
+2. **Scope environment string**  
+   Uses `extractElementTypeFromString()` to parse a stored type string.
+
+3. **AST walk fallback**  
+   Walks upward to enclosing declarations or parameters when needed.
+
+### Tier 0c: Pattern Binding
+
+Pattern-matching constructs may introduce a new variable or temporarily narrow an existing one.
+
+```csharp
+if (obj is User user) { user.Save(); }
+
+// Java
+if (obj instanceof User user) { user.save(); }
+
+// Rust
+if let Some(user) = opt { user.save(); }
+
+// Python
+match obj:
+    case User() as user:
+        user.save()
+```
+
+Binding behavior depends on the language:
+
+- **first-writer-wins** is used by default
+- **position-indexed branch overrides** are used where branch-local narrowing must not leak between branches, most notably Kotlin
+
+### Tier 1: Initializer / Constructor Inference
+
+When there is no explicit annotation, the resolver can infer a type from the initializer.
+
+```typescript
+const user = new User()
+
+// C#
+var user = new User()
+
+// Kotlin
+val user = User()
+
+// Go
+user := User{}
+ptr := &User{}
+user2 := new(User)
+
+// Ruby
+user = User.new
+```
+
+Some languages can identify constructor-like syntax directly. Others need validation through the `SymbolTable`, because syntax alone cannot always distinguish `User()` from `getUser()`.
+
+In those cases the system records an unverified binding candidate and later validates it against known class / struct symbols.
+
+### Tier 2: Assignment Chain Propagation
+
+Bindings can propagate through simple identifier assignments.
+
+```typescript
+const user: User = getUser()
+const alias = user
+const other = alias
+```
+
+This is handled after the main walk through a unified fixpoint loop over all pending assignments (copy, callResult, fieldAccess, methodCallResult). The loop iterates until no new bindings are produced (max 10 iterations), enabling arbitrary-depth mixed chains and reverse-order resolution:
+
+```typescript
+const b = a              // iteration 2: b → User (a now resolved)
+const a: User = getUser()  // iteration 1: a → User
+```
+
+Both `a` and `b` resolve correctly. The fixpoint also handles chains mixing field access and method calls:
+
+```typescript
+const user = getUser()       // callResult → User
+const addr = user.address    // fieldAccess → Address
+const city = addr.getCity()  // methodCallResult → City
+```
+
+---
+
+## Container Type Descriptors
+
+`CONTAINER_DESCRIPTORS` defines the type-parameter semantics for common containers.
+
+That allows the resolver to distinguish key-yielding methods from value-yielding methods instead of always assuming the last generic argument.
+
+```typescript
+for (const key of map.keys()) { ... }    // key → string
+for (const val of map.values()) { ... }  // val → User
+```
+
+Unknown containers fall back to heuristics, keeping the system conservative rather than fully semantic.
+
+### Examples of descriptor-driven behavior
+
+- `Map<K, V>` / `Dictionary<K, V>` / similar key-value containers
+- `List<T>` / `Array<T>` / `Vec<T>` / `Set<T>` / similar single-element containers
+- method-aware yield selection such as `.keys()`, `.values()`, `.keySet()`, `.Values`
+
+---
+
+## Comment-Based Types
+
+For less strictly typed ecosystems, the resolver can fall back to documentation-based type information.
+
+Supported comment systems:
+
+- **JSDoc** for JavaScript / TypeScript
+- **PHPDoc** for PHP
+- **YARD** for Ruby
+
+These are used conservatively and only when AST-level type information is missing or insufficient.
+
+---
+
+## SymbolTable Interaction
+
+Although the environment is built per file, it may consult the global `SymbolTable` in specific validation paths.
+
+This is important for languages where constructor-like syntax is ambiguous. A binding candidate such as `val user = User()` may need confirmation that `User` is a class-like symbol rather than an ordinary function.
+
+This means the system is still **per-file in binding construction**, but not completely isolated from project-wide symbol knowledge.
+
+---
+
+## Deferred Binding Verification in Call Processing
+
+A key detail is that some initializer bindings are not fully resolved inside `TypeEnv` itself.
+
+`call-processor.ts` later verifies deferred bindings and may infer receiver types from:
+
+- validated class / struct constructor candidates
+- uniquely resolved function or method calls that expose a usable return type
+
+So return-type-aware receiver inference already exists in a constrained downstream form today. Phase 7.3 extended this by threading `ReturnTypeLookup` into `TypeEnv` via `ForLoopExtractorContext`, enabling for-loop call-expression iterables (e.g., `for (const u of getUsers())`) to resolve element types in 7 languages (TS/JS, Java, Kotlin, C#, Go, Rust, Python, PHP). Phase 9 activated simple call-result binding (`var x = f()`) across all 11 supported languages (Swift excluded). Phase 9C replaced the sequential Tier 2b/2a with a unified fixpoint loop that handles four binding kinds — `callResult`, `copy`, `fieldAccess`, and `methodCallResult` — iterating until no new bindings are produced. This enables arbitrary-depth mixed chains like `const user = getUser(); const addr = user.address; const city = addr.getCity(); city.save()`.
+
+---
+
+## Language Feature Matrix
+
+| Feature | TS | JS | Java | Kotlin | C# | Go | Rust | Python | PHP | Ruby | Swift | C++ | C |
+|---------|:--:|:--:|:----:|:------:|:--:|:--:|:----:|:------:|:---:|:----:|:-----:|:---:|:-:|
+| Declarations | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
+| Parameters | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
+| Initializer / constructor inference | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
+| Constructor binding scan | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
+| For-loop element types | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes |
+| Pattern binding | Yes | Yes | Yes | Yes | No | Yes | Yes | No | No | No | No | No | No |
+| Assignment chains | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes |
+| Field/property type resolution | Yes | No† | Yes | Yes | Yes | Yes | Yes | Yes* | Yes | YARD | No | Yes | No‡ |
+| Comment-based types | JSDoc | JSDoc | No | No | No | No | No | No | PHPDoc | YARD | No | No | No |
+| Return type extraction | JSDoc | JSDoc | No | No | No | No | No | No | PHPDoc | YARD | No | No | No |
+| Call-result variable binding | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes¶ | No | Yes | No |
+| Field access binding | Yes | No† | Yes | Yes | Yes | Yes | Yes | No‖ | Yes | N/A | No | Yes | No |
+| Method-call-result binding | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes¶ | No | Yes | No |
+| Write access (ACCESSES write) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes§ | Yes | Yes | Yes | No |
+| Parameter types extracted | Yes** | No | Yes | Yes | Yes | Yes | Yes | Partial†† | No | No | No | Yes | No |
+| Method overload disambiguation | Yes** | No | Yes | Yes | Yes | No | No | No | No | No | No | Yes | No |
+| Constructor-visible virtual dispatch | Yes | No | Yes | Yes‡‡ | Yes | No | No | No | No | No | No | Yes§§ | No |
+| Optional parameter arity resolution | Yes | No | No | Yes | Yes | No | No | Yes | Yes | Yes | No | Yes | No |
+| Cross-file binding propagation | Yes | Yes | Yes‖‖ | Yes | Yes¶¶ | Yes*** | Yes | Yes | Partial | Yes*** | Yes*** | Yes*** | Yes*** |
+
+\* Python class-level annotated attributes (`address: Address`) now resolve `declaredType` correctly. The `self.x` instance attribute pattern is not yet supported.
+
+† JS field topology is captured (`field_definition` → `HAS_PROPERTY` edges) but `declaredType` is never set — JS has no AST type annotations. Disambiguation via `lookupFieldByOwner` requires `declaredType`. JSDoc `@type` support is a Phase 9 candidate.
+
+‡ C has no `@definition.property` query pattern. Struct member fields are not captured. C++ captures class/struct member fields via `field_declaration`.
+
+¶ Ruby call-result and method-call-result binding work via `call`/`method_call` nodes. Ruby uses method calls for both field access and method calls — there is no separate field access node type.
+
+‖ Python class-level annotated attributes (`address: Address`) have `declaredType`, but `self.x` instance attributes do not. Field access binding only works for class-level annotated fields.
+
+**Note on `this`/`self`/`$this` receivers:** Field access and method-call-result binding with `this`/`self`/`$this` as the receiver do not resolve in the fixpoint loop because these keywords are not stored in `scopeEnv`. They are resolved on-demand at call sites via `findEnclosingClassName()` AST walk. This is consistent across all languages and not a regression.
+
+§ PHP write access covers instance property writes (`$obj->field = value`) and static property writes (`ClassName::$field = value`). Nullsafe writes (`$obj?->field = value`) are not tracked because this is invalid PHP syntax — null-safe member access on the left-hand side of assignment is a parse error.
+
+\*\* TS: `parameterTypes` populated with `inferLiteralType` for overload disambiguation. TS overloads share one implementation body (generateId collision), but disambiguation selects the correct candidate.
+
+†† Python: parameter types extracted only with PEP 3107 type annotations (`def f(x: int)`).
+
+‡‡ Kotlin virtual dispatch supported via `detectConstructorType` hook — detects `Dog()` constructor calls (no `new` keyword) by verifying callee against `ClassNameLookup`.
+
+§§ C++ smart pointer virtual dispatch supported for `make_shared<T>()`/`make_unique<T>()` factory patterns. Raw pointer `new` also supported.
+
+‖‖ Java: `import static X.Y.method` now captured. Ambiguous static imports (same name from multiple classes) fall through to Tier 2a for arity narrowing. Non-static lowercase imports still skipped (package imports).
+
+¶¶ C#: `using static NS.Type;` now captured (last segment as class binding). Non-alias `using NS;` still unsupported — namespace imports can't be reduced to per-symbol bindings without type inference.
+
+\*\*\* Whole-module-import languages (Go, Ruby, C/C++, Swift): namedImportMap entries synthesized from graph-exported symbols via `synthesizeWildcardImportBindings()`. Not from import AST node extraction.
+
+---
+
+## Current Strengths
+
+The current system provides strong value for call resolution because it combines:
+
+- explicit annotation extraction across 13 languages
+- generic-aware loop element typing (including call-expression iterables)
+- initializer-based inference with SymbolTable validation
+- selected pattern-based narrowing
+- scope-aware lookups
+- comment-based fallbacks for dynamic ecosystems (JSDoc, PHPDoc, YARD)
+- constrained return-type-aware receiver inference in call processing
+- deep field/property chains up to 3 levels across 9 languages
+- ACCESSES edge emission for field read access (via chain walking) and field write access (via assignment capture) across 12 languages
+- mixed field+method chain resolution (e.g. `svc.getUser().address.save()`)
+- type-preserving stdlib passthrough for `unwrap()`, `clone()`, `expect()`, etc.
+- method overload disambiguation via argument literal types (Java, Kotlin, C#, C++)
+- constructor-visible virtual dispatch for same-file subclasses (Java, C#, TypeScript, C++, Kotlin)
+- optional/default parameter arity resolution — calls with omitted optional args still resolve (TS, Python, Kotlin, C#, C++, PHP, Ruby)
+- cross-file binding propagation across all 13 languages — named import extraction for languages with per-symbol imports, wildcard import synthesis for whole-module-import languages (Go, Ruby, C/C++, Swift)
+
+This is enough to materially improve call-edge precision even without implementing a full static type system.
+
+---
+
+## Current Limitations
+
+Important gaps still remain:
+
+- no general cross-file propagation of inferred bindings
+- `this`/`self`/`$this` receivers are not resolved in the fixpoint loop (resolved on-demand at call sites via AST walk instead)
+- limited branch-sensitive narrowing outside selected pattern constructs
+- limited Swift support compared with other languages
+- no complete destructuring-based field typing
+- no MRO/inheritance walking for field lookups (`lookupFieldByOwner` is direct-only)
+- for-loop variables bound at walk time cannot see fixpoint-resolved types (Phase 9B gap)
+- overloaded same-file methods share a graph node ID (generateId collision) — CALLS edges deduplicate to one per callee name
+
+---
+
+## Contributor Notes
+
+When modifying this system, treat the following as load-bearing invariants:
+
+1. **Conservatism matters more than recall**  
+   A missed binding is usually safer than a misleading receiver type.
+
+2. **Scope-key format is shared behavior**  
+   If scope keys change, constructor-binding verification and any downstream lookup using those keys must change in sync.
+
+3. **Tier naming may differ across code and PR discussions**  
+   For-loop element inference may appear as "Tier 0b" in documentation and "Tier 1c" in Phase 6 PR / test naming.
+
+4. **Comment-based types are fallback signals, not primary truth**  
+   They should remain lower-trust than explicit AST-derived types.
+
+5. **Return-type-aware inference already exists in constrained form**  
+   Future roadmap work should extend and generalize it rather than reintroduce it from scratch.