test: drop the cost map independence workflow, keep the gate as a local script

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

.github/workflows/test-cost-map-independence.yml

@@ -1,85 +0,0 @@
-name: "Cost map independence"
-
-on:
-  pull_request:
-    branches:
-      - main
-      - litellm_internal_staging
-      - litellm_oss_staging
-      - "litellm_**"
-
-permissions:
-  contents: read
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
-
-env:
-  UV_PYTHON: "3.12"
-  UV_CACHE_DIR: "${{ github.workspace }}/.uv-cache"
-  LITELLM_LOCAL_MODEL_COST_MAP: "True"
-
-jobs:
-  run:
-    name: Run cost map mutation gate
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    steps:
-      - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 1
-          clean: true
-          persist-credentials: false
-
-      - name: Fetch gate base (merge-base with target branch)
-        env:
-          GH_TOKEN: ${{ github.token }}
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
-        run: |
-          retry() { "$@" || { sleep 15; "$@"; } || { sleep 30; "$@"; }; }
-          MERGE_BASE=$(retry gh api "repos/${{ github.repository }}/compare/${BASE_SHA}...${HEAD_SHA}?per_page=1" --jq '.merge_base_commit.sha')
-          test -n "$MERGE_BASE"
-          retry git fetch --no-tags --depth=1 origin "$MERGE_BASE"
-          echo "GATE_BASE_SHA=$MERGE_BASE" >> "$GITHUB_ENV"
-
-      - name: Set up Python
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
-        with:
-          python-version: ${{ env.UV_PYTHON }}
-
-      - name: Set up uv
-        uses: ./.github/actions/setup-uv-with-retries
-        with:
-          version: "0.10.9"
-
-      - name: Cache uv dependencies
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
-        with:
-          path: ${{ env.UV_CACHE_DIR }}
-          key: ${{ runner.os }}-uv-downloads-py${{ env.UV_PYTHON }}-${{ hashFiles('uv.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-uv-downloads-py${{ env.UV_PYTHON }}-
-
-      - name: Cache the Rust build
-        uses: ./.github/actions/cache-cargo-build
-
-      - name: Install dependencies
-        timeout-minutes: 8
-        run: |
-          .github/scripts/uv_sync_with_retries.sh --frozen --group ci --group proxy-dev --extra google --extra proxy --extra semantic-router --extra saml
-          uv run --no-sync python -c 'import os, sys; print(sys.version); assert f"{sys.version_info.major}.{sys.version_info.minor}" == os.environ["UV_PYTHON"]'
-
-      - name: Cache Prisma binaries
-        uses: ./.github/actions/cache-prisma-binaries
-
-      - name: Generate Prisma client
-        run: |
-          uv run --no-sync prisma generate --schema litellm/proxy/schema.prisma
-
-      - name: Run cost map mutation gate
-        timeout-minutes: 20
-        run: |
-          uv run --no-sync python scripts/cost_map_mutation_gate.py --base "$GATE_BASE_SHA"

CLAUDE.md

@@ -25,7 +25,7 @@ Same thing for bug fixes. The tests should make it so that this specific bug can
 
 Never test structure of code only function of it
 
-A test must only fail when litellm code changes. Never pin facts we don't own (a vendor's price, a third party's field, an upstream default, today's date) as literals or as "X must be absent"; assert the invariant our code guarantees instead, e.g. two rows agree, a value is within range, a field is derived from another. If an outside fact is truly load-bearing, cite its source and date next to the assertion so a reader can tell stale from broken. `uv run python scripts/cost_map_mutation_gate.py --base origin/main` runs your changed test files against a cost map with every price, limit and deprecation date rewritten, which is what the provider sync does; CI runs the same gate
+A test must only fail when litellm code changes. Never pin facts we don't own (a vendor's price, a third party's field, an upstream default, today's date) as literals or as "X must be absent"; assert the invariant our code guarantees instead, e.g. two rows agree, a value is within range, a field is derived from another. If an outside fact is truly load-bearing, cite its source and date next to the assertion so a reader can tell stale from broken. `uv run python scripts/cost_map_mutation_gate.py --base origin/main` runs your changed test files against a cost map with every price, limit and deprecation date rewritten, which is what the provider sync does
 
 `tests/test_litellm/` mirrors `litellm/` in a parallel path (see `tests/test_litellm/readme.md`). Name tests `test_<filename>.py`, but always match the existing test file in the directory you touch — many provider dirs use longer descriptive names (e.g. `test_anthropic_chat_transformation.py`) to avoid ambiguity across sibling folders. For bug fixes, extend the existing mapped test file rather than creating a new one. Only create a new test file for a new feature (provider, endpoint, or transformation module) that has no mapped test yet, following that directory's naming convention (or `test_<filename>.py` if you're the first test there). One focused regression test beats many shallow ones