Commit graph

462 commits

Author SHA1 Message Date
ChunxueLi
19f6731c34
feat(java): resolve SpringContextUtil.getBeans(X.class) dynamic lookups (#2886)
* feat(java): resolve SpringContextUtil.getBeans(X.class) dynamic lookups

* fix(ingestion): make Spring dynamic lookups graph-correct

Capture Java and Kotlin lookups from ASTs and resolve them through scoped type bindings and transitive JVM assignability so emitted INJECTS edges are attributable, cache-safe, and production-tested.

Co-authored-by: Cursor <cursoragent@cursor.com>

* perf(ingestion): keep Spring lookup capture linear

Reuse Java and Kotlin scope-query call nodes instead of rewalking each AST, cache DI subtype closures, and enforce linear scaling with production-path benchmarks in CI.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-30 23:09:21 +00:00
Gergő Magyar
43a842724d
fix: bind Razor ViewComponent names to in-repo classes (#3104)
* fix: bind Razor ViewComponent names to in-repo classes

Index Component.InvokeAsync("Name") and in-repo ViewComponent("Name")
as CALLS to workspace ViewComponent classes so impact sees real callers
instead of an empty graph. SDK types stay unresolved.

Fixes #2991

Co-authored-by: Cursor <cursoragent@cursor.com>

* chore(autofix): apply prettier + eslint fixes via /autofix command

* fix: scan Razor and C# ViewComponent names without regex holes

Use string-aware lexers so combined Name= aliases, code-block calls,
this/base helpers, and escaped @@ markup match ASP.NET instead of
emitting false or missing CALLS.

Co-authored-by: Cursor <cursoragent@cursor.com>

* chore(autofix): apply prettier + eslint fixes via /autofix command

* perf: skip Razor scans without ViewComponent tokens

Preserve the lexer correctness fixes while avoiding per-character work for
the common view that cannot contain a supported invocation.

Co-authored-by: Cursor <cursoragent@cursor.com>

* test: gate Razor ViewComponent extractor scaling in CI

Wire mixed-corpus tripwire + GITNEXUS_BENCH loader/scaling checks into the dedicated ci-tests benchmarks job so the #2991 lexer cannot regress without a wall-clock gate.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix: read Razor views through one file handle

CodeQL js/file-system-race: the size gate stat'd the path and the read
re-resolved it, so a template swapped in between could be read past the
size ceiling. Both now go through the same handle.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-08-30 22:41:13 +00:00
Gergő Magyar
72edf40087
perf(store): V8 sidecars plus hardlinked ParsedFile restore (#3099)
* perf(store): add best-effort V8 sidecars beside canonical JSON caches

Warm ParsedFile and parse-cache loads skip JSON.parse when a sidecar is present. JSON remains authoritative: envelope validation plus v8.deserialize decide the hit, and any failure falls back without reparsing.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): require generation bind or sidecar drop before cache overwrite

A same-length JSON rewrite could accept a leftover V8 sidecar if both
generation rotation and unlink failed. Refuse the new generation unless
at least one of those invalidations succeeds; skip publishing a sidecar
when only the drop succeeded.

detect_changes --scope all: 7 files, risk low, no affected processes.
tsc --noEmit clean; 115/115 relevant unit tests; cache-related
integration tests pass. parse-impl-env-reads worker-ready timeout is
pre-existing (same 5 failures with this change set stashed). ESLint 0
errors; remaining warnings are pre-existing and not on changed lines.

Co-authored-by: Cursor <cursoragent@cursor.com>

* chore(autofix): apply prettier + eslint fixes via /autofix command

* refactor(store): share V8 overwrite invalidation across persist paths

The bind-or-drop gate lived in five writers. One helper keeps the
protocol in a single place and lets bind/drop run together on the
async path.

detect_changes --scope all: 3 files, risk low, no affected processes.

Co-authored-by: Cursor <cursoragent@cursor.com>

* perf(store): hardlink durable ParsedFile shards into the run store

Warm restore of parsedfile-cache into parsedfile-store now publishes all four shard files via fs.link, falling back to copy-into-tmp + rename so a leftover dest hardlink can never be written through. JSON remains the canonical cache; V8 sidecars ride the same path.

Co-authored-by: Cursor <cursoragent@cursor.com>

* perf(store): load immutable V8 shards in place, drop JSON fallback

Warm analyze was still paying JSON.parse plus a restore copy. One .v8 envelope per shard and SCHEMA_BUMP 81 make a miss re-extract instead of serving a stale JSON twin.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): validate durable V8 warm-cache restores

Reject incomplete or corrupt durable generations and snapshot valid shards before skipping parse workers, preserving ParsedFiles when persistence fails.

Co-authored-by: Cursor <cursoragent@cursor.com>

* refactor(store): drop unused durable load path

Load ParsedFiles only from the run-store snapshot and share one checksummed payload reader so inspect and deserialize stay consistent.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-08-30 20:50:20 +00:00
Gergő Magyar
9718e1247a
fix(parse): stabilize parse-cache chunks and cheapen ParsedFile loads (#3093)
* fix(parse): stabilize parse-cache chunks and cheapen ParsedFile loads

Hash-bucket membership so worker count and add/delete no longer reshuffle cache keys; GC and path sidecars keep small-shard scope-resolution from full-store JSON and empty GCs.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(review): apply review findings

Drop the unused pool argument from cache-budget resolution, reuse path compare helpers, and copy durable sidecars via full shard paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): copy durable path sidecars via full shard paths

Keep restore destinations relative to the run store even when sidecar names are derived from absolute json paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): fail closed on truncated ParsedFile path sidecars

Skip JSON only when a sidecar is complete (NUL-free, trailing newline). Truncated listings without a NUL were able to omit wanted paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

* style: apply prettier to ParsedFile store and tests

Match the PR autofix formatter so CI quality does not flag wrap-only diffs.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): tighten ParsedFile path sidecars from review

Skip sidecar writes when a path contains CR/LF, and assert the skip path does not open non-intersecting JSON shards.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): yield on sidecar skips and assert restore copies listing bytes

Skipped shards now count toward the 128-shard event-loop yield, and restore tests check sidecar contents rather than existence only.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): treat path sidecars as best-effort after a JSON shard write

A sidecar ENOSPC/EACCES must not fail persist; load already falls back to the JSON shard when the listing is missing.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): drop stale path sidecars when a shard is no longer listing-safe

Rewriting a shard with a newline-bearing path must unlink the old listing so load does not skip the JSON payload.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(parse): keep worker-integration tests aligned with hash buckets

Quarantine cache-skip asserts the poison pack hash, clone-skip keeps poison and survivors in one bucket, and restore unlinks a stale dest sidecar when the durable source has none.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(parse): address review follow-ups for cache packs and sidecars

Record SCHEMA_BUMP 80, pin pack locality and sidecar load/restore tests, and keep sidecar I/O best-effort with shared ENOENT handling.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): drop stale path sidecars after a failed listing write

A leftover .paths file after ENOSPC (or similar) made load skip the new JSON shard. Hash expected packs with the same env budget production uses.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(store): drop path sidecars before overwriting parsed-file JSON

Load trusts a leftover .paths listing, so rewriting a shard must unlink that listing first. Otherwise an interrupted sidecar refresh can hide newly written files.

Co-authored-by: Cursor <cursoragent@cursor.com>

* chore(autofix): apply prettier + eslint fixes via /autofix command

* fix(store): fail closed on truncated or CR path sidecars

Count-prefix listings so a newline-terminated partial sidecar cannot skip the JSON shard, and reject CR instead of stripping it.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(ci): expect single-file watch refresh telemetry

The production analyze --watch e2e was still pinned to the old pack-cascade
"8 re-parsed" line, so shard 1/3 timed out after a correct 1-file refresh.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(ci): expect one reparsed file on a non-bean incremental touch

Pack-cascade leftover: the drift-skip test still required 7 reparsed files
after logger.ts-only edits. Cheap ParsedFile loads now reparse just that file.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-08-30 08:31:47 +00:00
Gergő Magyar
7e993ab897
fix(group): fail ambiguous sync names and honor analyze --name (#3094)
* fix(group): fail sync when a member name is ambiguous

Silent first-match bound the wrong clone when --allow-duplicate-name
registered two paths under one alias. Refs #3028.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(analyze): apply --name on the already-up-to-date path

A rename should not require --force when the index is already current.
Register before the same-commit branch restamp. Refs #3028.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(group): hint member path when impact --repo is an alias

$localRepo stays the yaml key; joining on the registry alias is a
non-join. List matching keys so operators can retry. Refs #3028.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(group): keep injected sync and alias hints consistent

Workspace-deps path maps reuse the resolved handle so duplicate names
cannot throw after an injected resolver. Alias hints match case-insensitively.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-29 21:48:46 +00:00
Gergő Magyar
54f97c86c7
fix(impact): make File risk comparable via shared axes (#3075) (#3082)
* docs(plans): add impact file risk plan

Capture the evidence, constraints, and verification path for fixing incomparable File and symbol impact risk.

Co-authored-by: Cursor <cursoragent@cursor.com>

* refactor(impact): centralize risk scoring

Keep the existing thresholds in one shared scorer and expose a common-axis comparison for targets with unavailable enrichment axes.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(impact): expose incomparable file risk scale

Mark File impact results when process and module axes are unavailable, and provide a common-axis score for honest cross-kind comparisons.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(impact): explain cross-kind risk comparisons

Surface the common-axis score in CLI and agent guidance while reusing the shared threshold ladder in the web impact tool.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(impact): fail closed when enrichment is incomplete

Preserve proved HIGH/CRITICAL process counts, treat failed queries as UNKNOWN, and surface riskScale metadata on MCP, group, CLI, and Graph-RAG File walks.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-29 11:58:15 +00:00
azizur100389
bf7dcf98ca
feat(analyze): add incremental watch mode (#3072)
* feat(analyze): add incremental watch mode

* fix(watch): harden control file reads

* fix(watch): contain refresh errors and bound reads

* fix(watch): stream strict control file reads

* fix(watch): harden refresh recovery and lifecycle

* fix(watch): report ignored repository defaults

* fix(analyze): preserve signal exit semantics

* style(analyze): format signal exit helper

* test(config): exercise descriptor growth guard

* test(watch): await source event before rename

* fix(watch): keep live-index retries honest and ignore analyzer writes

Hold retry backoff when events merge, stop only after a live-index mutation, skip .gitnexus self-writes, and reject the remaining one-shot watch flags. Export impact-risk scoring from gitnexus-shared so consumers can share the same scale.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(watch): contain queue edge cases after review

Preserve overflow-only refreshes, contain synchronous refresh failures, and mark successful atomic publication before later operations can fail.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-29 10:40:56 +00:00
Chareonwit Kunna
7c723ce794
fix(impact): resolve repo-relative file paths via filePath (fixes #3074) (#3084)
* fix(impact): resolve repo-relative file paths via filePath (fixes #3074)

- resolve repo-relative paths like supabase/functions/_shared/crypto.ts
  via n.filePath exact + anchored ENDS WITH suffix, not just n.id/n.name
- return impactedCount:null on not_found so miss cannot be read as 0/UNKNOWN safe
- relax parenthesised OR-clause test to allow extra filePath terms

* fix(impact): scope filePath match to File nodes (review #3084 P1)

* fix(impact): make file path resolution parseable and safe

* docs(pdg): align result contract fixtures with v3

* test(impact): add exact path precedence and not_found contract assertions
2026-08-29 10:57:59 +01:00
John R. Eakin
38a0837e4b
feat(wiki): add grok local CLI provider (#3069)
* feat(wiki): add grok local CLI provider

Wiki generation can use `gitnexus wiki --provider grok` to spawn the
authenticated Grok Build CLI (`grok --prompt-file`) instead of an HTTP API key.

* style(wiki): prettier grok-client for CI format check

CI quality/format failed on grok-client.ts. Auto-format matches repo prettier so the GitNexus /autofix comment is applied locally.

* Update Grok CLI configuration to use empty allowlist and increase max tu

* Replace Grok tool allowlist with explicit denylist and strict sandbox

* Increase Grok max turns to 15 to accommodate prompt variance

* chore(wiki): drop Unreleased CHANGELOG hunk and restore lockfile libc selectors

Feature PRs do not own CHANGELOG.md. Restore the 16 libc platform selectors
deleted from package-lock.json with no dependency change.

* fix(wiki): resolve grok CLI through Windows cmd.exe shims

Extract resolveWindowsCliCommand from the local CLI client and use it for
grok detect/spawn so npm .cmd installs work without a shell. Keep
detectGrokCLI() returning the display name for the wiki menu.

* fix(wiki): wait for grok child close before timeout cleanup

Do not reject the grok spawn promise on the timeout timer. Kill the child,
escalate SIGKILL after 2s, and reject only on close (or a second 2s hard
deadline) so callGrokLLM cannot rm the sandbox while the process is alive.

* fix(wiki): reject incomplete grok stopReason and distinct parse errors

Honor JSON stopReason (end_turn or omitted succeeds; anything else throws).
Split empty-output / non-JSON / missing-text messages and include a truncated
stdout excerpt. Drop unused GrokConfig.workingDirectory.

* fix(wiki): keep grok temp dir on hung timeout and ignore stdin

Hard-deadline reject no longer removes --cwd while the child may still
be running. Spawn stdin is ignored so grok's unused pipe cannot EPIPE
the wiki process.

Co-Authored-By: Grok 4.6 <grok4.6@x.ai>

* fix(wiki): require grok stopReason=end_turn for a finished page

Live grok 1.0.5 with wiki spawn flags returns stopReason end_turn.
Omitted, null, or empty stopReason is no longer treated as success, so
generateLeafPage cannot write a page that never completed.

Co-Authored-By: Grok 4.6 <grok4.6@x.ai>

* style(wiki): deslop grok parse nesting and extra comments

Flatten parseGrokOutput with early returns and drop narrative comments
that restated the timeout/stdin/stopReason constraints. Behavior unchanged.

Co-Authored-By: Grok 4.6 <grok4.6@x.ai>

* test(wiki): make grok Windows spawn tests match real cmd.exe

On Windows CI, detectGrokCLI also calls where.exe, ComSpec is an
absolute cmd.exe path, and waitForSpawn must wait for real fs I/O.

Co-Authored-By: Grok 4.6 <grok4.6@x.ai>

* test(wiki): expect taskkill on Windows grok timeout, not child.kill

killChildTree uses taskkill /T /F on win32 and only falls back to
child.kill() if that fails.

Co-Authored-By: Grok 4.6 <grok4.6@x.ai>

* test(wiki): remove grok temp dir after hard-deadline leak assertion

The hard-deadline test must keep the dir until close, then emit close so
late cleanup runs and the temp directory is not left behind.

Co-Authored-By: Grok 4.6 <grok4.6@x.ai>

* test(wiki): wait for grok temp dir rm after late close

Windows CI failed the hard-deadline test because 30 setImmediate ticks
cannot observe fire-and-forget fs.rm. Poll with real timers after close.

---------

Co-authored-by: Grok 4.6 <grok4.6@x.ai>
2026-08-29 08:46:30 +01:00
azizur100389
f64cc8b7a8
feat(group): add GraphQL cross-repo contracts (#3070)
* feat(group): add GraphQL contract extraction

* fix(group): tighten GraphQL contract guards

* fix(group): complete GraphQL review hardening

* fix(group): isolate bounded GraphQL reads

* fix(group): harden GraphQL contract extraction
2026-08-29 08:39:09 +01:00
azizur100389
4f16bd8023
fix(impact): report scope extraction omissions (#3071)
* fix(impact): surface scope extraction omissions

* fix(impact): preserve complete index fixtures

* fix(impact): preserve scope completeness evidence

* test(analyze): model successful scope extraction in harnesses

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-29 08:38:20 +01:00
DuduPhudu
0f793558ad
fix(group)!: stop group sync claiming matching it never did (#3020)
* fix(group)!: remove the matching cascade that was advertised but never built

`gitnexus group create` wrote `matching.bm25_threshold` and
`matching.embedding_threshold` into every generated group.yaml, and no matcher
ever read either one. That was not the whole of it — an entire feature surface
described a BM25/embedding cascade that does not exist:

- `matching.bm25_threshold` / `matching.embedding_threshold` — parsed, persisted,
  unread
- `detect.embedding_fallback` — defaulted and templated, unread
- `MatchType` declared `'bm25' | 'embedding'`; both variants unreachable
- `SyncOptions.skipEmbeddings` — declared in sync.ts and never read
- `gitnexus group sync --skip-embeddings` — accepted, threaded through
  GroupService, ignored
- CLI help in en and zh-CN promised "Exact + BM25 only (no embedding fallback)"
- the MCP `group_sync` schema exposed `skipEmbeddings`, described as
  "Exact + BM25 only (Demo PR: same as default exact path)"

`sync.ts` imports exactly `buildProviderIndex`, `runExactMatch` and
`runWildcardMatch`, and the printed cascade has one stage. An operator whose
links do not match reaches for those thresholds first, and turning either knob
changes nothing — config that silently does nothing is how people conclude a
feature is broken.

Evidence that the cascade should be deleted rather than implemented, from a real
backend/frontend pair: of 165 consumer contracts, 149 link exactly and 16 do not.
Nine of the sixteen are third-party APIs (Google OAuth, Apple public keys,
PostHog, image annotation) with no in-group provider by construction — similarity
matching cannot recover them, it can only invent false links. Two are verb
mismatches: the frontend calls `POST /links` and `GET /links/check-exists` while
the backend declares `GET /links` and eleven other `/links/*` routes but neither
of those, so a fuzzy path match would link a POST consumer to a GET provider. The
rest are path-extraction artifacts. Roughly none of the sixteen would be
correctly recovered, and several would be actively mis-linked.

BREAKING CHANGE: `gitnexus group sync --skip-embeddings` and the MCP `group_sync`
`skipEmbeddings` parameter are removed. Both were accepted and ignored, so no
behavior changes — but a script passing the flag now fails with `unknown option`
instead of being silently misled. Existing group.yaml files keep loading: the
removed keys are simply no longer part of the schema, and a regression test pins
that a legacy config carrying all three still parses.

Closes #3006

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group)!: honour --exact-only, drop inert --allow-stale, report every matching stage

Addresses the review findings on #3020, all of which are the same defect the PR
itself is about: group-sync surface that describes behaviour the pipeline does
not have.

`exactOnly` was inert in exactly the way `skipEmbeddings` was — declared on
`SyncOptions`, threaded through the CLI and the MCP tool, and read by nothing —
and strictly worse, because the stage it promised to suppress DOES run and DOES
write `matchType:'wildcard'` links into contracts.json and the bridge, which
`group impact` and cross-repo `trace` then traverse. It is now honoured rather
than deleted: unlike the never-built BM25/embedding stages, the stage it names
exists, so the flag describes a real choice. The substituted result is
`{ matched: [], remaining: unmatched }`, not an empty result — `wildcard.remaining`
IS `SyncResult.unmatched`, so skipping the stage has to leave its input unmatched
rather than dropping it from the count an operator reads.

`allowStale` had no such stage to gate: `syncGroup` emits no stale warning at any
point (the `checkStaleness` call lives in `groupStatus`, a different path), so it
is removed under the same rationale as `skipEmbeddings`.

`group sync` now prints every matching stage instead of `exact` alone. The old
block printed a `Matching cascade:` header and counted only exact links while the
next line reported `result.crossLinks.length` — which also includes `manifest` and
`wildcard` — so for any group with those the two numbers disagreed with nothing on
screen explaining why. Counting is an exhaustive `Record<MatchType, number>`, so a
new MatchType fails the build here instead of going silently uncounted, and reads
through `?? 0` so a legacy registry carrying a removed matchType prints an honest
count rather than `NaN`.

Also: the MCP `group_sync` description no longer omits the wildcard stage that
always runs, `exactOnly`'s description no longer refers to a "cascade", and
bench/cross-repo-trace/verify.mjs no longer generates the removed threshold keys
into a fresh group.yaml.

Tests: `sync-exact-only.test.ts` pins both directions of the gate (mutation-verified:
removing the gate, or returning `remaining: []`, both go red). `group-tools.test.ts`
pins that the MCP schema dropped `skipEmbeddings` and kept `exactOnly`.
`group-cli.test.ts` pins that both removed flags are rejected, with `--exact-only`
as an accepted-flag control. `config-parser.test.ts` now pins that legacy keys are
PRESERVED (measured, not assumed) rather than only that parsing does not throw.

The type narrowing's fallout in test files is cleared: `tsc -p tsconfig.test.json`
is 987 errors at head against 987 measured on origin/main, with the two error sets
identical — zero net, zero new, zero masked.

Verification: `tsc --noEmit` exit 0; prettier clean; eslint 0 errors (2 warnings,
both pre-existing on base); 69 test files / 1169 tests green across
test/unit/group, test/integration/group, tools, cli-i18n and cli-index-help.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): reject malformed and retired group_sync parameters (U1)

`GroupService.groupSync` read `exactOnly` off an untyped MCP payload with
`Boolean(params.exactOnly)`. While the flag was inert that coercion was
harmless; now that it gates the wildcard matching stage, the string "false" --
a routine shape for an LLM caller emitting JSON -- is truthy, so a caller that
asked to KEEP wildcard matching got it suppressed and a registry with fewer
cross-links persisted to disk. The opposite of the request, written down.

Validate instead of coercing, at the service boundary: the MCP SDK does not
enforce a tool's advertised inputSchema and `callTool` is reachable directly,
so this method is the real gate. The validator mirrors `validateImpactMode`'s
`{ value } | { error }` shape -- the established idiom for this boundary, and
the one groupSync's other guards already return through.

Also refuse `skipEmbeddings` and `allowStale` by name. The CLI rejects them
outright because commander errors on an unknown option; the MCP path accepted
and silently dropped them, so an agent working from a cached tool schema was
never told. Removing them took away discoverability, not acceptance.

Both guards run before the group is read off disk, so a rejected call performs
no work. Every test asserts the sync did NOT run -- an error string alone
cannot distinguish "refused" from "refused but synced anyway".

The tool description gains the validation note AFTER the registryOutcome
paragraph: `tools.test.ts` slices that description by ordinal position of the
'preserved' / 'superseded' / 'no-prior-registry' literals, so appending past
all three leaves those slices intact (verified, 44/44).

tsc clean; 1039/1039 group unit tests pass.

* fix(group): record the matching stages a sync was told to skip (U2)

An `--exact-only` sync wrote a contracts.json and bridge with fewer cross-links
and nothing recorded that the wildcard stage had been suppressed by request.
`group_impact` and cross-repo `trace` read that registry as authoritative, so a
narrowed graph was indistinguishable from a complete one -- and because
`group_sync` is MCP-exposed, one agent call durably narrowed the shared answer
for every later reader with no signal at all.

Add `suppressedMatchStages` to ContractRegistry and SyncResult, following the
`unreadableRepos` tri-state end to end: absent means a registry written before
the field existed, `[]` is the measurement "this run suppressed nothing", and a
populated list names the stages. The writer always emits it, because omitting
the empty case is what made "measured, none" unreachable for `unreadableRepos`.

Two properties that are easy to get backwards, and are why the split matters:

- SyncResult carries the marker on EVERY outcome. The sync genuinely did skip
  the stage whatever happened to the file afterwards, and the CLI summary (U3)
  renders from this rather than re-deriving it from the caller's options.
- The PERSISTED registry stamps it only on the `written` outcome. The preserve
  path re-writes `{ ...prior }`, so a carried-forward registry keeps the marker
  of the sync that actually produced its contracts instead of being relabelled
  with this run's request. That holds by construction: the registry literal
  carrying the field is only reachable on the written path.

`loadContractRegistryResilient` gains an explicit line, because it rebuilds the
envelope field by field with no spread of the parsed root -- a new on-disk field
is silently dropped unless named there.

Its reader is `recordedMatchStages`, not the existing `recordedRepoList`: that
one validates `string[]`, which is right for repo names and one notch too weak
here. This repo has already retired MatchType members ('bm25', 'embedding'), so
a stale value on disk is a real shape, and dropping non-members keeps an unknown
stage name from reaching a caller typed as a live one.

Surfaced on `group_contracts` and on `group_sync`'s own return -- deliberately
kept separate from the truncated/truncationReason/riskEpistemic triple. That
triple reports limits a run hit by accident, whose remedy is to fix the repo; a
suppressed stage was asked for, and its remedy is to re-sync without the flag.
Conflating them would tell an agent to retry something that returns identically.

tsc clean; 1043/1043 group unit tests pass.

* fix(group): name a skipped matching stage as skipped, and pin it (U3, U4)

Two facts were printing as the same line. `wildcard: 0 cross-links` meant both
"the stage ran and matched nothing" and "the stage never ran because you passed
--exact-only" -- the same conflation this summary block was introduced to remove
one line up, reintroduced by the flag that made the block necessary.

Render a suppressed stage as `skipped (--exact-only)`, driven by the sync's own
`suppressedMatchStages` rather than by `opts.exactOnly`. The renderer reports
what the sync did, not what the caller asked for, so it stays correct on the
outcomes where the run ended without writing a registry -- which is where the
summary is least legible and a re-derivation from the options would have been
wrong.

Also drops the `?? 0` fallback and the comment justifying it. The comment
claimed a legacy registry could carry a retired matchType into this loop. It
cannot: `syncGroup` returns a freshly computed `crossLinks` array on every
outcome, and even on the preserve path the prior links go to disk while the
fresh array is returned. The code was harmless; the stated reason was false, and
a comment that explains an unreachable path is worse than no comment.

U4 pins both halves through the CLI. A manifest fixture is sufficient: the stage
counts must sum to the total on the `Wrote contracts.json (…)` line, and the
skipped rendering does not need a stage to have matched anything, because
--exact-only records the suppression whatever the fixture holds. That is why
this coverage did not need indexed gRPC/Thrift fixture repos.

Verified by mutation, not assertion: removing the skipped-rendering branch turns
`names a stage it was told to skip as skipped` red and leaves the other 22
green. A control case pins the opposite direction -- the same group without the
flag still reports the stage as zero -- so `skipped` cannot be printed
unconditionally and pass.

U3 and U4 land together: the test has no value without the renderer, so one
commit keeps a revert clean. Both depend on U2, which introduced the field they
read.

tsc clean; 1066/1066 across the group unit and CLI integration suites.

* fix(group): make every description of --exact-only match what it does (U5)

Two descriptions this branch wrote or touched still misstated behavior.

The MCP `exactOnly` description carries "Manifest links still apply." The CLI
help and both locale strings, rewritten in the same commit, omit it -- so the
surface most operators read understated what still runs. Manifest cross-links
are computed before the gate and are genuinely unaffected by the flag, so the
caveat is the accurate half and the CLI now says it too.

The `group_sync` tool description opened with "extract HTTP contracts". That
clause was carried forward byte-identical while only the trailing cross-linking
half was rewritten, and it is wrong: the detect config has six non-HTTP
extraction toggles, and this branch's own new test fixture is Thrift.

`help-i18n.ts` is deliberately untouched. It maps an option to its translation
key and that key already exists; only the commander string and the two locale
values carry text, so a text-only change does not reach it.

The tool-description edit sits ahead of the registryOutcome paragraph, leaving
the relative order of the 'preserved' / 'superseded' / 'no-prior-registry'
literals intact -- `tools.test.ts` slices that description by their positions.

tsc clean; 64/64 across the locale-parity, help-registration, tool-schema and
group-tool suites.

* fix(group)!: remove max_candidates_per_step and shared_libs (U6)

Both keys were declared, defaulted, written into every generated group.yaml,
and read by nothing -- the same three-station dead surface this PR removed for
bm25_threshold, embedding_threshold and detect.embedding_fallback. Every other
DetectConfig field gates a real extractor in sync.ts; shared_libs gates nothing,
because 'lib' contracts come only from the operator-declared manifest extractor.
MatchingConfig reaches matching.ts solely through buildNoisyContractFilter,
which reads exclude_links_paths and exclude_links_param_only_paths and nothing
else.

Existing group.yaml files keep loading and keep their keys. parseGroupConfig
spreads the raw block over its defaults, so a key the schema no longer knows
about survives into the returned config -- which matters because `group add` and
`group remove` round-trip the operator's file through loadGroupConfig ->
yaml.dump -> write, so anything the parser dropped would be deleted from their
checked-in file. The legacy-config test now pins both keys in the same cast form
as its three siblings, and the fixture carries shared_libs so that assertion is
not vacuous.

Two stations that are easy to miss and are swept here:

- gitnexus/bench/cross-repo-trace/verify.mjs GENERATES a fresh group.yaml. It is
  not a preserve-path fixture, so "leave YAML fixtures alone" does not cover it;
  the repo has two generators and both are updated. It is a .mjs file outside
  tsconfig's include, so no type gate would have caught it.
- config-parser.test.ts asserted the removed default at runtime, which vitest
  DOES run. That assertion is gone from the defaults case (the key no longer has
  a default) and re-formed as a preserve assertion in the legacy case.

Verification gate, corrected: "zero net new errors against origin/main" would
have measured the whole branch delta and been red through no fault of this
commit. Measured instead against the branch tip immediately before it --
tsc -p tsconfig.test.json --noEmit reports 989 before and 989 after. Twenty-four
typed-literal sites across ten test files, none of them CI-gated, plus the two
runtime sites above which are.

Note the deliberate side effect: removing a key from the defaults also stops the
group add round-trip from re-adding it to a file that never carried it. Nothing
in src reads either key, so no behavior changes.

BREAKING CHANGE: `matching.max_candidates_per_step` and `detect.shared_libs` are
no longer part of the group.yaml schema and are no longer written into generated
templates. Existing files carrying them continue to parse and retain them.

src tsc clean; 1189/1189 across the group unit, group integration, locale-parity,
help-registration and tool-schema suites.

* docs(group): map PR #3020 review findings to the commits that close them

Retitles the ledger to hold one section per reviewed PR and adds #3020's ten
findings. Two things are stated rather than claimed away: `abda0d041` closes
three findings because they are one code block plus the test that pins it, and
the suppressed-stage marker is a coupled set because the renderer consumes the
field the earlier commit introduces.

Also records what is NOT closed here -- the PR description's false claim about
`max_candidates_per_step` lives outside this branch.

* refactor(group): apply simplify-pass findings

Four cleanup agents (reuse, simplification, efficiency, altitude) over this
run's diff. Efficiency was clean. The rest found five things worth fixing, two
of which were real gaps rather than style.

`recordedMatchStages` filtered unknown values instead of rejecting the list.
That inverted the tri-state on the one field built to prevent exactly this
conflation: a stale `['bm25']` -- the scenario its own comment cites as the
motivation -- survived as `[]`, which on this field MEANS "measured, nothing was
suppressed". A confident clean answer manufactured from a value we could not
read. Now all-or-nothing, matching `recordedRepoList`.

`gitnexus group contracts` showed nothing after an exact-only sync. The human
renderer destructures a fixed field list and gates its incompleteness warning on
`truncated`, so the marker reached the MCP payload and the JSON output but not
the listing an operator actually reads. It now warns, separately from the
`truncated` warning, because the remedies differ: one says fix the repo, this
one says re-run without the flag.

`verbose` was still coerced with `Boolean()` in the same call whose tool
description this branch changed to promise "PARAMETERS ARE VALIDATED". Validated
now, and added to the tool schema -- it was read by the backend and advertised
nowhere.

Reuse: the thrift wildcard-matchable pair existed twice, near-verbatim, in
`sync-exact-only` and `registry-suppressed-stages`. Both now call a shared
`makeWildcardPair` fixture, so the shape `runWildcardMatch` fires on is defined
once.

Simplification: dropped a `Set` built per sync over a list that only ever holds
zero or one entries; iterating `Object.keys(STAGE_COUNTS) as MatchType[]` also
keeps the exhaustiveness the `Record` was built for, which `Object.entries` had
discarded.

Deliberately not done, with reasons: a schema-driven unknown-parameter layer at
the MCP chokepoint (five parameters are read by backends and declared in no
schema, so a strict layer rejects working calls today, and it cannot produce the
"was removed" message finding 3 is about); folding the marker into
`GROUP_IMPACT_TRUNCATION_REASONS` (reverses a recorded plan decision and the
bridge scope is an open question for the maintainer); a per-stage suppression
cause `Record` (no second suppressor exists -- speculative); collapsing the six
`detect` extractor branches into a table (a real generalization, but a refactor
outside this diff); and converging an untouched pre-existing CLI test onto the
new manifest helper (it captures a value the helper does not return, so the
change risks more than the duplication costs).

tsc clean; eslint 0 errors (1 pre-existing warning); 1085/1085.

* docs(group): remove REVIEW-FINDINGS-MAP.md

Removes the findings-to-commits ledger from the source tree.

Note for anyone reading this in history: the file was introduced on main by
#3012 and carried that PR's findings map; this branch had appended a #3020
section. Deleting it drops both. #3012's content is recoverable with
`git show 2c0fb7753:gitnexus/src/core/group/REVIEW-FINDINGS-MAP.md`.

* fix(group): stop cross-repo impact and trace claiming a narrowed graph is complete

Closes the half of the suppressed-stage finding that was deferred. The reviewers
were right that deferring it was the weak point: the motivating harm was named
as `group_impact` and cross-repo `trace` traversing a graph missing real edges,
and those were exactly the surfaces left uncovered.

The deferral rested on an assumption that does not hold. "It is already blind to
this, so we do not make it worse" is false: `--exact-only` was inert before this
PR, so the number of narrowed registries in the world goes from zero to nonzero
exactly when this lands. The blindness was harmless only while narrowing was
impossible. And silence there is not neutral -- `cross-impact.ts` documents
`truncated: false` as an affirmative completeness claim, so those tools were
about to start asserting a complete answer over a knowingly short graph.

`suppressedMatchStages` now rides the bridge the same way `unreadableRepos`
does: persisted in meta.json (no BRIDGE_SCHEMA_VERSION bump -- meta fields have
this precedent), read back all-or-nothing, and carried across the preserve path
through `refreshPreservedBridgeMeta`'s diagnostics so a preserved bridge keeps
the marker of the sync that actually built it.

`crossRepoCompleteness` folds it in, which is what makes this one change reach
all three surfaces -- that function is by design the ONE computation behind the
truncation triple. Precedence is explicit: an unreadable or unaccounted repo
outranks a suppressed stage, because it is the more serious structural gap and
its remedy has to be the one reported.

`'suppressed-stage'` is a new member of the truncation-reason union rather than
a reuse of `'incomplete-sync'`. The earlier decision not to touch that union was
about not conflating remedies -- telling an agent to repair a repo that read
fine, for a narrowing it requested. A distinct member preserves that reasoning
while letting the answer stop claiming completeness, which is what reusing the
existing member would have destroyed.

The union's guard test did its job: adding a member failed the check that every
reason is explained on the agent-facing surface, so the impact tool description
now names this one and its distinct remedy (re-run WITHOUT the flag; nothing
failed to read).

`group status` and its CLI renderer surface it too, on the populated case only
-- absent is a registry predating the field and empty is the ordinary clean
sync; neither earns a line.

Deliberately still not done, and why: a repo-wide unknown-parameter layer for
every MCP tool. Five parameters are read by backends and declared in no schema
(`subgroupExact`, `unmatchedOnly`, `showClusters`, `showProcesses`, and
`verbose` until this branch declared it), and three tools dispatch with no
schema entry at all, so a strict layer rejects working calls until each is
reconciled. That reconciliation is the work; the layer is the cheap part. It
also cannot produce the "was removed and is no longer accepted" message the
retired-parameter guard exists to give.

tsc clean; eslint 0 errors (2 pre-existing warnings); 1159/1159 across the group
unit, group integration and tool-schema suites.

* fix(group): make the suppressed-stage signal actually reach its readers

Applies the mechanical findings from the code review of the previous commit.
That commit claimed cross-repo impact and trace stop reporting a narrowed graph
as complete. Trace did; impact did not, and two operator-facing messages said
something false. Four reviewers plus the cross-model pass converged on the same
two defects, and the untested seams were exactly where they were.

`runGroupImpact` recomputed the truncation reason and hardcoded its fallback, so
it could never emit 'suppressed-stage' -- the value the previous commit added to
the union and documented in the tool description. Every narrowed-but-readable
bridge was reported as 'incomplete-sync', telling the caller to repair a repo
that read fine. It now propagates the bridge's own reason, as cross-trace.ts
already did.

The preserve path stamped this run's request onto an older bridge. When no repo
can be read the database and registry are kept from an earlier sync, so
meta.json has to keep describing that sync; instead `{ ...existing,
...diagnostics }` overwrote its marker, leaving contracts.json, meta.json and
bridge.lbug describing three different runs. Currently masked by unreadable-repo
precedence, one loosened condition from a live wrong verdict.

`group contracts` printed "the last sync did not record which repos it could
read" after any exact-only sync: truncated was set with both repo lists empty,
so the message fell through to the wrong branch. It is now gated on the reason,
not the flag. `group impact` likewise blamed the local walk for a floor the flag
caused.

The tri-state reader is now defined once, in the leaf module whose own comment
says it exists so this exact duplication cannot recur -- it had been copied into
bridge-db.ts within one commit of that comment being true.

Both agent-facing descriptions now name the field. The previous commit added it
to three payloads and documented it on none.

Tests cover what shipped green: the preserve path for both artifacts (verified
by mutation -- reintroducing the stamp turns exactly one test red), and the
reason's REACHABILITY. The existing guard only asserted each reason is
described, which is why a documented-but-unemittable value passed it.

Also corrects a comment that said the marker is deliberately not folded into the
truncation triple. True when written; false one commit later.

tsc clean; eslint 0 errors; 1163/1163 across the group unit, group integration
and tool-schema suites.

* fix(group): drop verbose from the MCP surface, fail a superseded bridge closed

Two maintainer-directed findings from the review.

verbose is removed from the group_sync MCP schema and from GroupService, and
kept on the CLI. The parameter never did what either description claimed: the
gates emit workspace-dependency discovery stats and one aggregate manifest line,
not "each cross-link". Worse, they emit them through the server's logger, which
an MCP caller cannot read at all -- so advertising it introduced precisely the
kind of knob this PR exists to delete, in the PR that deletes them. SyncOptions
keeps the field and the CLI keeps --verbose, because a CLI user really can see
that output; its help now says "Show additional sync diagnostics", which is
what it shows. It was added to the MCP schema earlier in this same PR, so there
is no published compatibility burden in taking it back out. A caller that still
sends it is ignored rather than refused: it was never a documented parameter,
and the retired-name guard is reserved for ones this tool actually withdrew.

The second fixes a split-brain the completeness work made materially worse. When
contracts.json commits and the bridge write then fails, the previous database
stays in place describing an EARLIER sync. Until now it kept vouching for
itself, so group_impact could traverse the superseded graph and call its answer
complete while group_contracts reported the advanced registry -- two public
surfaces making contradictory epistemic claims out of one sync. That was
tolerable when the disagreement was about counts. It is not, now that
suppressed-stage makes completeness a correctness property.

markBridgeProvenanceUnknown withdraws the claim without touching the database:
bridgeMetaMatchesFile already gives provenanceUnknown highest precedence and
refuses to vouch for the pair, so cross-repo answers downgrade to a floor until
a sync succeeds. Deliberately not a re-stamp -- the metadata still describes the
database it was written for, and saying otherwise recreates the mis-pairing the
preserve path avoids. Deliberately not a delete -- the old graph is still worth
having as a floor, it just stops being called complete. Best-effort, because it
runs inside a failure handler and must not replace a reported bridge failure
with an unrelated one; the warning now states which of the two happened.

Shared registry+bridge generation identity is the architectural fix and is
deliberately NOT attempted here. This is the PR-sized containment.

Verified by mutation, both directions: neutering the withdrawal turns the new
test red, and a control pins that a healthy sync does not withdraw provenance --
otherwise every successful run would report its own answers as a floor.

tsc clean; eslint 0 errors; 1185/1185.

* refactor(group): apply simplify-pass findings

Four cleanup agents over the last five commits. Efficiency was clean and traced
why: the containment helper is failure-path only, the reason ternary sits after
the fan-out loop, and the tri-state readers run once per artifact read.

The strongest finding was one the diff itself proved. `refreshPreservedBridgeMeta`
enforced the never-persisted rule for `repoListsUnreadable` and
`pairedWithDatabase` with two deletes in its own body, under a comment noting it
was the only code that read metadata and wrote it back. That held exactly as
long as there was one such caller. `markBridgeProvenanceUnknown` made it two,
and inherited nothing. The strip now lives in `writeBridgeMeta`, so every writer
gets it and no future one can forget; `pairedWithDatabase` is the dangerous one,
because persisted it tells every later reader the pair was verified when nothing
verified it.

`group impact` still printed "fan-out stopped early" whenever `truncatedRepos`
was non-empty — but the bridge's incomplete repos are unioned into that list
even when zero crossings were attempted, so a structural gap was reported as a
runtime one, with the only working remedy omitted. That is the same false-cause
shape the contract listing was re-gated for one commit ago, left live one
command over because the new reason was bolted in front of the old branch rather
than replacing the thing it branched on. Now keyed on the reason.

The `?? 'incomplete-sync'` arm in cross-impact was unreachable: reaching it
needs `truncated` true with all three of its inputs false, which
`truncated = runtimeTruncated || bridge.truncated` forbids. Flattened.

Also: a `recordedMatchStages` insert had split `crossRepoCompleteness` from its
own JSDoc; one new test was a strict subset of another; and the bridge-failure
warning interleaved concatenation with a mid-chain ternary.

The new invariant assertion was caught being VACUOUS by mutation before it
shipped — seeded with a valid repo list, `readBridgeMeta` never sets the
reader-only field, so it passed with or without the strip. The fixture now seeds
an unreadable list, and both it and the pre-existing assertion go red when the
strip is removed.

Deliberately skipped, with reasons: a shared `firstTruncated` fold over
`TruncationFields` (the right altitude, but it changes cross-trace's return
assembly and that surface separately documents a 'timeout' rung it cannot emit —
a behavior change, not a cleanup); a reason-keyed `explainFloor` helper across
all four CLI renderers (real, but a four-site refactor); narrowing the persisted
stage vocabulary to a `SuppressibleStage` alias (would be undone by the very
extension the field was modelled as a list to allow); moving `verbose` to
`logger.debug` and deleting `SyncOptions.verbose` (the maintainer explicitly
directed keeping both); and merging the two tri-state readers behind a predicate
(they are adjacent in one file now, so a tightening applies to both by
inspection — the duplication the comment warned about was cross-FILE).

tsc clean; eslint 0 errors; 1164/1164.

* fix(group): address gitnexus-check findings

Seven bot comments across two review rounds; five distinct after dedup. Four
were valid and are fixed, two were already resolved by later commits the bot
had not seen.

The validator could throw from its own error path. `JSON.stringify` is the right
renderer there — it is what distinguishes the string "false" from the boolean,
which is the entire point of the message — but it throws on a BigInt and on a
cyclic object. So a validator promising a structured `{ error }` instead
rejected, and `callTool` is reachable directly, so neither input is
hypothetical. Guarded, keeping the distinction and falling back for the shapes
that cannot serialize.

An unreadable suppression record read as "nothing was suppressed".
`recordedMatchStages` is all-or-nothing by design, so garbage collapses to
`undefined` — and the consumer treated `undefined` as an empty measurement,
throwing that safety away and reporting a registry it could not parse as
complete. Present-but-unreadable now forces the floor, while absent stays
legitimate: a registry written before the field existed has no opinion and
should not be dragged to a floor for it.

Two test-side findings, both real and both invisible to CI because
`tsconfig.json` is src-only. Three `mock.calls[0][1]` accesses did not
type-check against a zero-arg mock, and four assertions read `truncationReason`
/ `riskEpistemic` straight off `CrossRepoCompleteness`, which is a discriminated
union carrying them on one arm. Also removed a `StoredContract` import that went
dead when those fixtures moved to `makeWildcardPair`.

Worth recording: U6 set a test-config gate at 989 errors and later commits
walked it to 994 without anyone re-measuring — the bot caught three of the five.
Now 987, below the original baseline.

Already fixed, not by this commit: the preserve-path stamp the bot flagged
against 6ceac8b1f (fixed in 1fbe0dc6b) and the displaced completeness JSDoc
(fixed in 2d2ef8c47).

Both behavior fixes are mutation-verified: restoring the unguarded stringify
turns the new unserializable-value test red, and a control pins that an absent
record still reads as complete so the fails-closed change cannot pass by forcing
every registry to a floor.

src tsc clean; eslint clean; 1167/1167.

* chore(autofix): apply prettier + eslint fixes via /autofix command

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-08-27 18:27:32 +01:00
DuduPhudu
48106d3c00
fix(ingestion): index NestJS decorator routes so api_impact and route_map stop reporting live endpoints as non-existent (#3017) 2026-08-27 08:35:36 +01:00
azizur100389
ac68f5254c
fix(ingestion): preserve object handler identity (#3046)
Some checks are pending
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* fix(ingestion): preserve object handler identity

* fix(impact): cap object callable expansion
2026-08-26 15:44:33 +01:00
azizur100389
09322d2d89
fix(storage): load VECTOR only when needed (#3045)
* fix(storage): load VECTOR only when needed

* test(storage): verify VECTOR reopen lifecycle

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-26 12:57:56 +00:00
azizur100389
88df18b829
fix(ingestion): discover nested source directories (#3043) 2026-08-26 12:24:39 +00:00
azizur100389
9d4f029001
fix(impact): mark Convex caller results incomplete (#3044)
* fix(impact): mark Convex caller results incomplete

* fix(storage): align Convex Const persistence
2026-08-26 12:54:00 +01:00
DuduPhudu
2c0fb7753c
fix(group): stop reporting what could not be measured as a measurement of zero (#3012)
* fix: surface unreadable group indexes and escape raw NUL bytes in source

Two independent diagnostics failures, both of which turn a real error into a
confident, benign-looking answer.

**Unreadable member repos (#3011).** `syncGroup` wrapped `initLbug` plus all
contract extraction for each member in a bare `catch {}` that pushed the repo
onto `missingRepos` and discarded the error. A LadybugDB storage-version
mismatch therefore surfaced as "repo not found", `group sync` printed
`0 contracts, 0 cross-links` and exited 0, and the existing contracts.json was
overwritten with an empty registry. The two states need different answers from
the operator — a missing repo must be indexed, an unreadable one is usually
version skew or a lock — so they are now separate:

- the caught error is logged with the repo, group path and lbug path
- `unreadableRepos` is tracked alongside `missingRepos` on `SyncResult`,
  persisted (optionally, so older registries still parse) on `ContractRegistry`,
  and threaded through `GroupService` sync/status
- `group sync` reports both before the cascade counts, since an unread repo is
  the likely explanation for a small or empty count
- `group status` reports unreadable repos separately; calling them "missing"
  actively misdescribed them
- when EVERY configured repo fails to open, the write is skipped: an extraction
  that read nothing is not evidence the group has no contracts, and replacing a
  good registry with an empty one loses data while reporting success

**Raw NUL bytes (#3010).** `sync.ts` and `free-call-fallback.ts` each used a NUL
as a join delimiter, written as a literal 0x00 instead of `\0`. Identical at
runtime, but it makes the file test as binary: `file(1)` reports `data`, ugrep
returns empty with exit 1 — indistinguishable from "no match", with no message —
and BSD grep replaces matching lines with "Binary file ... matches". A search
that should hit comes back as a confident "not present". Both now use the escape,
and a unit test fails on any raw control byte in src/ so it cannot silently
return.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(hygiene): guard every tracked source file against a raw NUL, not just src/

The guard added with the NUL escapes only scanned gitnexus/src for .ts/.tsx.
Neither prior recurrence of this defect in this repo was in that scope:
b620773b1 was gitnexus/bench/cpp-qualified-ns/measure.mjs and 38d737bb5 was a
fixture under gitnexus/test. A guard that cannot see where the bug has actually
landed twice is not a guard.

Drive the file list from `git ls-files` at the repository root over
.ts/.tsx/.js/.jsx/.mjs/.cjs/.mts/.cts — 2483 files instead of 828 — and split
the byte class, which is the part that matters:

  - 0x00 is a hard failure repo-wide. It is the byte git's binary heuristic
    keys on, so it is the one that costs a file its diff (and, on the base side
    of a PR, its inline-comment anchors and its three-way merge).
  - The wider C0 class stays scoped to gitnexus/src. A repo-wide scan finds
    exactly one hit, test/unit/logger.test.ts:146, and that 0x1b is a
    legitimate ANSI-escape fixture that is the subject of the test. Widening
    this half would go red on day one.

Read Buffers and scan bytes instead of decoding each file to latin1, through a
bounded read pool: 1.5 s for 2483 files, against 8-21 s previously for 828.

Add a negative fixture — a planted 0x00 and 0x1b run through the same scanning
helper — so a future refactor of the collector cannot leave a permanently green
guard, plus an assertion that the collected set still reaches bench/, test/ and
.mjs, which goes red if the scope is ever narrowed back.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): report a cross-repo impact built from an incomplete bridge as truncated

When a sync cannot read a member repo, that repo's contracts and every
cross-link touching them are simply absent from bridge.lbug. Nothing in the
impact walk could notice: the only incompleteness channel on a
GroupImpactResult is truncationFields(), which is driven by fan-out state
(truncatedRepos / localPartial / fanoutTimedOut), and a repo missing from the
bridge sets none of them.

So `group impact` on a symbol whose one downstream consumer lives in an
unreadable repo returned `{ cross: [], truncated: false }` — "complete: nothing
in another repo depends on this". That is a wrong answer, not an empty one, for
a tool an agent uses to license a delete or a rename.

BridgeMeta now records unreadableRepos alongside missingRepos, writeBridge
persists it when non-empty, and runGroupImpact folds a non-empty
unreadableRepos ∪ missingRepos into truncated / riskEpistemic: 'lower-bound',
naming the repos in truncatedRepos.

The reason is a new 'incomplete-sync' rather than the existing 'partial'
because the remedy differs: 'timeout' and 'partial' are runtime limits the same
query can clear on a retry, while this one clears only when `gitnexus group
sync` succeeds. Runtime limits still take precedence when both apply, since
those are what the caller can act on immediately.

The risk VALUE is never clamped down — mergeRisk is monotone in the traversed
crossing count, so an incomplete bridge can only under-report. Marking the floor
is what makes that legible.

Both shape changes are additive and optional, so a bridge written before this
still reads.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): say truthfully what a sync did to contracts.json

Review follow-ups to the unreadable-repo diagnostics. Every item below is a
place where the code still answered a question it could not answer.

1. The CLI announced a write it did not perform. `group sync` printed "Wrote
   contracts.json (0 contracts, 0 cross-links)" unconditionally, including on
   the path that deliberately left the file alone. SyncResult now carries
   registryOutcome ('written' | 'preserved' | 'not-attempted'), the CLI prints
   from it, and group_sync returns it so an agent that calls group_sync then
   group_contracts can tell why the counts disagree.

2. Refusing to write anything on total failure threw away the diagnostic
   describing the run that just happened. `group status` reads contracts.json
   from disk, so the operator who saw the sync fail and ran status to find out
   why read the PREVIOUS sync's file: no unreadable list, an old lastSync, a
   healthy-looking group — or worse, the previous run's unreadable list
   presented as this one's. The skip is now targeted: contracts, crossLinks,
   repoSnapshots and generatedAt carry forward verbatim, only missingRepos and
   unreadableRepos are refreshed. generatedAt stays put because it dates the
   contracts, which are still the previous run's. With no prior file, or an
   unparseable one, nothing is written at all.

3. Per-repo extraction is now all-or-nothing. Extractors run in sequence and
   any one can throw; appending each one's results straight to autoContracts
   meant a repo whose HTTP extractor succeeded and whose gRPC extractor then
   failed contributed a partial set to the registry, while the same run told
   the operator that repo's "contracts are omitted from this sync".

4. readRegistry gains an opt-in strict mode, and syncGroup uses it. The lenient
   `catch { return []; }` converted "I could not read the registry" into "no
   repo is registered": every configured repo then resolved to MISSING, the
   total-failure guard stayed off (it needs a load error), and a good
   contracts.json was replaced by an empty one at exit 0. That is an unreadable
   condition reported as missing, one frame above the code this branch fixes.
   The default stays lenient for the other nine callers; ENOENT stays lenient
   in both modes.

5. Absence of unreadableRepos keeps meaning "not recorded". The loader spreads
   the key in only when present instead of defaulting to [], and getStatus
   passes undefined through, so a legacy registry no longer reads as "the last
   sync found none unreadable". getStatus also gates both list fields on
   Array.isArray: it reads through readContractRegistry, which is a bare
   JSON.parse cast, so a corrupt string in either slot used to reach
   cli/group.ts and die in .join(', ') — the command whose job is explaining an
   unreadable thing, crashing on one.

6. Smaller, same theme: the per-repo warning passes the Error itself rather
   than err.message, so pino keeps the stack; the total-failure warning no
   longer fires on a dry run, where it described a file the call was never
   going to touch and which need not exist; the status table's MISSING legend
   stops re-conflating the two states; the sync warning drops its
   GITNEXUS_LOG_LEVEL=warn hint, which would only have suppressed output (pino
   emits warn at the default info level, so the reason was already printed);
   and the group_sync tool description and its idempotency comment now describe
   what the tool actually does.

Testing. The original four cases could not see the change they were named
after. Mutation testing showed two survivors: dropping the ===
configuredRepoCount conjunct, which turns "every repo failed" into "any repo
failed" and would silently freeze contracts.json for a group where one of five
repos is skewed; and deleting both logger.warn calls, the stated purpose of the
change. Both survived because every case configured exactly one repo and
nothing read the log. There is now a two-repo case running the real per-repo
loop, an all-missing case, a _captureLogger assertion on the level 40 record,
partial-extraction cases, and strict-read cases. All five mutants are killed,
each by exactly one test.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): tighten the registry list gates and stop naming a truncation reason on complete results

Three follow-ups from the check bot's pass over the previous commits.

1. `detect.includes` was missing from both group-sync test fixtures, so they did
   not satisfy the `GroupConfig` they claim to construct. It went unnoticed
   because `tsconfig.json` is src-only; `tsconfig.test.json` reports it. The
   older of the two fixtures carried the gap in from the original commit.

2. `runGroupImpact` named its truncation reason in a variable computed before
   the truncated check, so on a fully complete result the variable read
   'incomplete-sync'. `truncationFields` discards the reason when `truncated` is
   false, so nothing surfaced — but a value that is wrong whenever it is unused
   is a trap for the next reader. Computed inline at the one call site that can
   consult it, which is also how the neighbouring call sites are written.

3. `Array.isArray` alone let a corrupt registry through. `['app/backend']` and
   `[{repo:'x'}]` are both arrays, and only the second reaches `cli/group.ts`'s
   `.join(', ')` — as `[object Object]`, a measurement the operator can read but
   cannot act on. Both readers now go through one `recordedRepoList` helper that
   requires an array of strings; anything else is "not recorded", the same as
   absent. Two more rows in the corrupt-value table cover it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): keep readRegistry's signature, and stop describing unreadableRepos as index-only

Two items from the check bot's blocking pass.

1. `readRegistry` gained an optional `opts` parameter last commit. That is
   source-compatible — every zero-argument call still compiles and behaves
   identically — but the contract check treats any parameter-list change on a
   symbol with outside callers as a break, and it is right that the safest
   version of this change touches that signature not at all. The strict read is
   now its own export, `readRegistryStrict()`, over a shared private body.
   `readRegistry()` is byte-identical to what it was; `syncGroup` is the only
   caller of the strict one, and the mode is legible at the call site instead of
   hiding in an options bag.

2. `unreadableRepos` is described everywhere as "the index could not be opened".
   That was accurate before this branch and is not now: making per-repo
   extraction all-or-nothing means a repo also lands there when an extractor
   throws partway with the index open fine. The two belong in one bucket
   because the consequence is one thing — none of that repo's contracts are in
   this sync — but the docs have to say so, or an operator reads `unreadableRepos`
   as a storage diagnosis and goes looking at LadybugDB for an extractor bug.
   Corrected on `ContractRegistry`, `BridgeMeta`, `SyncResult`, the `group_sync`
   tool description, and the `group sync` console output, which now says
   "Could not extract contracts from" rather than "Could not read the index for".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(cli): stop calling an unreadable registry an old one in group status

`getStatus` reports `unreadableRepos` as `undefined` for two different reasons:
the field is genuinely absent, or it held something that was not a list of repo
paths and the shape gate declined to guess. The status line named only the
first — "registry predates this field" — so a corrupt value read as a merely
old registry.

That is the same shape of wrong answer this command exists to stop giving: a
condition we could not read, presented as a benign one we understand. The line
now names both, and asks for a sync either way, which is the fix in both cases.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): close the three fail-open paths left on the safety boundaries

Follow-ups from the re-review of 31c2b6e81. All three of its blocking findings
reproduce; each is a place where unknown state still resolved to a confident
benign answer, which is the one thing this branch exists to stop.

1. Strict registry reading accepted malformed rows. `[{}]` is a JSON array, so
   it passed the shape check: every configured repo then failed to resolve into
   `missingRepos`, none produced a load ERROR, the total-failure guard stayed
   off, and a good contracts.json was replaced with an empty one at exit 0 —
   the same fail-open the strict mode was added to close, one level down from
   the file to the rows inside it. Strict mode now requires `name`, `path` and
   `storagePath` on every row and rejects the WHOLE registry if any row fails.
   Rejecting rather than filtering is the point: dropping bad rows would report
   the repos they name as unregistered, which is the same wrong answer again.
   `indexedAt` / `lastCommit` are deliberately not required — callers already
   default them, so demanding them would trade a fail-open for a fail-shut on a
   legitimate legacy registry.

2. A failed bridge publication could make impact look complete. `writeBridge`
   swaps `bridge.lbug` and writes `meta.json` as two operations, and this branch
   made that meta load-bearing: `runGroupImpact` derives its truncation fields
   from it. A sync interrupted between the two steps therefore left a NEW bridge
   beside the PREVIOUS sync's metadata, and an impact query read that as
   "complete". Fixed from both ends. The write path removes the old meta before
   the swap, so the window leaves metadata ABSENT rather than stale. The read
   path treats absent-or-unparseable meta (`version: 0`) as unknown provenance
   and reports a floor, which also covers the caught `writeBridge` failure in
   `syncGroup`. Over-reporting truncation on a bridge that is actually fine is
   the safe direction, and the next successful sync clears it.

3. `preserved` was returned when there was nothing to preserve. On a group's
   first all-unreadable sync the outcome was set before the prior registry was
   read, so the CLI told an operator "the contracts from the previous sync are
   preserved" about a file that had never existed. Split out as
   `no-prior-registry`, with its own console message.

Also widened the NUL guard to the source languages it claimed to cover. The
commit that added it said "every tracked source file" while the collector
stopped at the JS/TS family, so a raw NUL in tracked Python, Java, Go, Rust,
C/C++, Ruby, PHP, Kotlin, Swift, C# or shell would still have turned those files
binary unnoticed. Measured before widening: 2315 non-JS tracked source files,
zero hits, so this was an unforced gap rather than a tradeoff. A planted `.py`
fixture and a collector-coverage assertion keep it honest.

Every fix is mutation-verified: reverting each one individually turns its own
tests red (3, 2, 2, 1 and 1 failures respectively), and all pass together.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): record the empty unreadable measurement instead of dropping it

Both writers omitted `unreadableRepos` when it was empty, which made the
tri-state this branch introduced unreachable in its most common case.

`ContractRegistry.unreadableRepos` is optional on the TYPE so a registry written
before the field existed still parses, and absence there means "not recorded".
But a sync that read every repo successfully HAS measured it, and `[]` is that
measurement. Dropping it collapsed "measured, none" into "never recorded", so
after every clean sync `gitnexus group status` printed

    Last sync unreadable repos: not recorded
    (the registry predates this field, or its value could not be read)
    Re-run `gitnexus group sync` to record it.

about the sync that had just succeeded. The distinction is only worth having if
the writer commits to it, so both `contracts.json` and the bridge's `meta.json`
now record the field whenever the sync supplied it, `[]` included.

The check bot found this on the bridge writer and attributed the consequence to
`group status`. The consequence is real but it is not the bridge's: `getStatus`
reads `contracts.json` and never touches `BridgeMeta`, whose only consumer is
`runGroupImpact` — where absent and empty are already equivalent. So the
user-visible half was in the registry writer, one file over from where it was
reported, and both are fixed.

Also fills in `DetectConfig.includes` (and `workspace_deps`) across the group
test fixtures that predate those fields. These are pre-existing on main and are
a no-op at runtime — `undefined` and `false` are both falsy at the gate — but
they are the same defect the bot flagged as an error in the new fixtures, and
`tsconfig.test.json` reported eleven of them. That file is not in CI, which is
why they survived; the group tree is now clean of them.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* test(group): stop two bridge-metadata tests claiming coverage they do not have

Both were named for the swap window and neither injects a swap failure.

"drops the previous meta.json before swapping the database file" runs two
successful writeBridge calls. Its assertions hold with the removal in either
position, because writeBridge overwrites meta.json at the end regardless — so
it cannot pin the ordering it is named for. Renamed to what it does cover, the
successful-rebuild replacement, with the limit stated in the body rather than
left for the next reader to discover.

"leaves NO meta.json when the swap fails partway" removes the file by hand
after a successful write, so it exercises readBridgeMeta's missing-file
contract, not writeBridge. That contract is worth pinning on its own — version 0
is the signal runGroupImpact fails closed on — so the test stays, under a name
that says so.

The ordering itself is pinned in bridge-meta-swap-window.test.ts, which mocks
retryRename to throw on the bridge.lbug swap and asserts the previous sync's
metadata cannot survive it. Both renamed tests now point there, so the coverage
is findable from the place someone would look for it.

No production code changes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* fix(group): pair bridge metadata to its database instead of deleting it

The previous commit closed the swap/metadata window by removing meta.json before
the database swap, so the window would fail to "absent" rather than "stale". That
was the wrong trade, and it destroyed recoverable state.

The old database's move to `.bak` sits inside a catch that swallows failures, not
just "no existing db". When that rename fails — a held read-only handle does this
on Windows, and a long-lived MCP server holds one — the failure is swallowed, the
following `tmp -> bridge.lbug` throws, and writeBridge exits with the OLD database
still in place and perfectly valid. Its metadata was already deleted. Cross-repo
impact then answers "we cannot say" for that group until some future sync
succeeds, and if the cause is a held handle or permissions there is no such sync.
A working feature, destroyed permanently to close a narrow window.

Deleting also only chose which way the window failed; it never closed it.

So destroy nothing, and make the pair self-describing instead: writeBridge stamps
the database's size and mtime into the metadata it writes, and
`bridgeMetaMatchesFile` lets a reader ask whether the two still belong together.
`runGroupImpact` treats a mismatch the same as absent metadata — provenance
unknown, report a floor. A metadata file left over from an earlier sync cannot
match a freshly renamed database, and a sync that fails before the swap leaves a
matching pair untouched. Metadata written before the stamp existed is
unverifiable rather than stale, and is accepted: failing those closed would mark
every pre-existing bridge incomplete, trading a narrow window for a repo-wide
regression.

The swap-window test now distinguishes the two failure shapes, because they want
different answers. When every rename fails the old database never moves, so the
surviving metadata still matches it and impact keeps answering from it. When only
the final rename fails the old database has already reached `.bak` and no
database is in place, so the metadata correctly matches nothing — and
`ensureBridgeReady` fails loudly on the absent file, which beats a silent floor.

Mutation-verified: reinstating the delete, neutering the pairing check, and
dropping the stamp each turn 2, 3 and 3 tests red respectively.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014g48u4WcRZy543Wqp5NhpV

* chore: keep TypeScript diffs readable after a NUL leaves the tree

Git decides a pair is binary when EITHER blob carries a NUL, and it only
sniffs the first 8000 bytes. `gitnexus/src/core/group/sync.ts` carried one
at byte 5132 on main. This branch removes it, but the base side still has
it, so the file renders as "Binary files differ" in the pull request: no
hunks, no inline comments, and no three-way merge — however clean the head
side is. A head-side byte guard cannot detect that, by construction, since
it only ever sees the working tree.

Setting the `diff` attribute stops the heuristic from hiding the change.
It does not mark the files binary, does not imply `text`, and does not
change how blobs are stored, normalized, or checked out — the root
`* text=auto eol=lf` still governs all of that. It affects diff generation
and rendering only.

Locally this turns the branch's own sync.ts diff from `Bin 17612 -> 25346
bytes` into 154 insertions and 16 deletions.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): answer "provenance unknown" for malformed bridge metadata

`readBridgeMeta` guarded the read and the parse but not the SHAPE of what it
parsed, then cast the result. `runGroupImpact` spread both repo lists straight
into a Set, so a `meta.json` whose `missingRepos` held an object threw a
TypeError out of the entire cross-repo query — and threw it from a point after
`ensureBridgeReady` had taken the bridge lease and before the `try` whose
`finally` releases it, so every such query also leaked a refcount the cached
handle could never get back. A malformed file is a reason to answer "we cannot
say", never a reason to crash the question.

The shape gate now lives where the metadata is read, mirroring the one
`service.ts` already applies to the registry's copies of these same two lists.
Each list is judged independently: a garbage `unreadableRepos` no longer
discards a `missingRepos` that was genuinely measured. A list that was present
but unusable is dropped rather than normalized to `[]`, because an unreadable
value is not a measurement of zero — the new reader-side `repoListsUnreadable`
carries that distinction, and `runGroupImpact` folds it into the same
provenance-unknown verdict it already reaches for `version: 0` and for
metadata that does not pair with the database beside it.

A root that is not an object is closed too. `JSON.parse` succeeds on `null`,
`7` and `[]`; the first threw on `.version`, and the other two read `undefined`
and sailed through the version gate as if the bridge had been vouched for.

Both provenance values moved inside the protected region and are initialized
fail-closed, so a future throw between the lease and the walk releases rather
than wedges.

`repoListsUnreadable` is reader-side only: the sole `writeBridgeMeta` call site
builds a fresh literal, so nothing persists it and no schema version moves.

Mutation-verified: reverting the shape gate alone turns 4 tests red — the three
malformed-list scenarios plus the handle-release regression.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(storage): reject registry rows that cannot identify a repo

The strict read's row gate gave `typeof v === 'string'`, and `typeof '' ===
'string'`. A row whose `name` was blank therefore passed as resolvable, then
matched nothing in `defaultResolveHandle` — putting every configured repo in
`missingRepos` and presenting an unusable registry as a clean answer about an
empty one. That is the same unreadable-as-missing fail-open the strict mode
exists to close, one level further in. A blank `storagePath` is worse than
useless: it joins to a relative `lbug` under the current directory, so the sync
opens an index that is not the repo's.

Both now have to be non-blank after trimming. `path` stays at the bare string
check, on the same reasoning that already exempts `indexedAt`/`lastCommit`:
require only what resolution depends on to IDENTIFY the repo. This gate rejects
the whole registry and the registry is machine-wide, so a field tightened past
what identification needs would let one blank value in one row break every
group sync on the machine — including groups whose repos all resolve. A blank
`path` still yields a working handle; `defaultResolveHandle` does read it, but
only for the pool id and `repoPath`, neither of which decides whether the row
names a repo.

The error now says what is actually wrong instead of naming three fields that
are all present.

Mutation-verified in both directions: dropping the trim turns the three
rejection tests red, and applying the wider fix that was considered and
declined — tightening `path` too — turns exactly the counter-case red, so that
test genuinely pins the narrow reading rather than passing either way.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): bound the per-repo contract staging append

`autoContracts.push(...repoContracts)` passes every staged contract as a
separate argument, and the engine caps how many arguments one call may take.
That cap is a function of the host's available stack, so it is a different
number on every machine — this one accepts a 125k-element spread and dies at
150k.

The spread itself is not new; what it carries is. Before staging, this line
appended a single extractor's output as it came back. Staging made it carry the
whole repo's, which is enough for a large repo to raise `RangeError: Maximum
call stack size exceeded` on the one line whose job is to commit work that just
succeeded. The throw lands in the catch below, so the sync reports a repo whose
extractors all ran cleanly as one whose index could not be read — a crash
wearing the costume of a diagnostic.

A bounded loop replaces it: the count a repo can stage is now bounded by memory
rather than by how much stack the process happened to get.

The guard is structural, not size-based, and deliberately so. A "make the
fixture big enough to crash" test passes against unfixed code on any host with
a larger stack, which is exactly the guarantee a regression gate cannot give
up. It walks the AST and locates the region by role — the `const` staging
buffer typed `StoredContract[]`, then the extractor `try` that is a direct
statement of the block declaring it — so renaming either identifier keeps it
pointed at the same code. `.apply()` is rejected alongside spread, being the
same hazard in different syntax.

Direct statements only, because `syncGroup` wraps this whole section in its own
try/finally for the lease sweep, and that ancestor reads the buffer too.
Matching any enclosing `try` pulls in the entire function body — including the
two windowed-manifest spreads, which are bounded by the window size and are not
what this fixes.

Mutation-verified in both directions: restoring the spread turns the gate red
naming that line alone; deleting a manifest-window spread, and separately
adding a third one, both leave it green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): keep unreadable repos out of manifest contracts too

Per-repo staging closed one door: a repo whose extractor threw contributes
nothing through the direct path. Deferred manifest resolution was a second
door, still open. It derives its known-repo set from the resolved-handle map,
which kept an entry for a repo the same run had already declared unreadable —
so the sync re-opened that index and resolved symbols against a database it had
just told the operator it could not read.

Deleting the handle in the catch stops the re-open, but it does not satisfy
R2 on its own: `ManifestExtractor` resolves both endpoints of a link and emits
a contract for each, and for an endpoint with no executor that contract is
still emitted with a synthetic UID. The registry ended up naming a repo the
same run reported unreadable.

So the emitted output is filtered by ENDPOINT, not by link. Dropping the whole
link would delete the healthy partner's contract as well — a repo losing its
own output because a neighbour's index would not open, which is wider than the
requirement and destroys good data to suppress bad. A cross-link is different:
it asserts something about a pair, so if either end is unreadable there is
nothing left to anchor it to, and a half-anchored link is exactly the
confident-about-what-it-could-not-read answer the registry must not give.

Deleting the handle also changed what the operator gets told, so the warning is
split. An unreadable repo IS configured; letting it fall into the "references
repos not in config.repos" branch states something false and sends the reader
to edit group.yaml for a problem only re-indexing fixes. It now gets its own
message naming what was actually omitted.

Mutation-verified four ways: reverting the endpoint filter turns three
scenarios red; the over-broad whole-link variant turns the healthy-partner
scenario red and nothing else; removing the handle delete turns the
no-re-open scenario red; and reverting the warning split turns the operator-
message scenario red. Every assertion reads the written contracts.json rather
than the in-memory result.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(group): keep readBridgeMeta's signature stable across the shape gate

The shape gate landed by widening the return type to a reader-only
`ReadBridgeMeta extends BridgeMeta`. That is source-compatible — a covariant
return, one added optional field, every existing caller unaffected, typecheck
and suite clean — but the contract check reads it as a changed signature with a
caller left behind, and blocks the merge on it. This branch already hit the
same wall on `readRegistry` and settled it the same way: leave the signature
alone and make the difference legible some other way.

So the flag moves onto `BridgeMeta` itself as an optional, documented,
never-persisted field, and `readBridgeMeta` goes back to the exact signature
its callers already compile against.

That is the better shape here anyway. The reader-only subtype would have split
the validation two ways: `openBridgeDbReadOnly` and `bridgeExists` both gate on
`meta.version`, and the normalization that comes with the gate is what stops a
`version: null` in a hand-edited meta.json from reading as `undefined` and
sailing through `version > 0` as though the bridge had been vouched for. One
type keeps all three callers behind the same guard.

Nothing persists the flag: `writeBridgeMeta`'s only caller builds a fresh
literal, so it cannot round-trip to disk.

No behavior change — pure type restructuring. 927 tests pass, typecheck clean.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): stop treating a half-written bridge stamp as a verified match

`bridgeMetaMatchesFile` joined its two `undefined` checks with `||`, so
metadata carrying a size and no mtime — or the reverse — returned `true`, the
same answer it gives a fully verified pair.

A stamp is a PAIR. Both halves absent is the legacy shape: metadata written
before stamping existed, which cannot be verified either way and is accepted
deliberately, because failing it closed would mark every pre-existing bridge
incomplete until re-synced. Exactly one half present is not that. Something
wrote a stamp and did not finish, which is precisely the condition stamping was
added to detect — so the check handed back "verified" for the one shape that
most deserves suspicion, and a cross-repo impact query built on it would report
a confident answer about a database its metadata cannot vouch for.

The two states are now separated: neither half present accepts, exactly one
rejects as provenance-unknown, both compare against the file as before.

Found by the repository's own contract check, not by the plan.

Mutation-verified: restoring the `||` form turns both half-stamp cases red
while the legacy and fully-stamped controls stay green, so the pair genuinely
pins the distinction rather than passing either way.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): pair unstamped bridge metadata by write order, before any open

Unstamped metadata was waved through: `bridgeMetaMatchesFile` returned "matches"
for any pair with no stamp to check, so the stale-meta-beside-a-new-database
window stayed open for every bridge written before stamping existed, and
`runGroupImpact` spent that metadata's completeness as fact.

`writeBridge` renames the database into place and writes the metadata after, so
`meta.mtime >= db.mtime` holds for any pair written together — including by
builds that predate the stamp. A database strictly newer than the metadata
beside it can only come from a swap whose metadata write did not land. That is
the fallback now. It is a heuristic on write order, not proof of provenance, and
it is wrong in two directions: a stale metadata file touched after the swap
still reads as paired, and a pair whose clock stepped backwards between the two
writes reads as unpaired. Both are recorded at the code; the second is the safe
direction. Equality counts as paired, or a coarse-granularity filesystem would
reject every legacy bridge for a reason that is about the filesystem.

The verdict is now taken in `ensureBridgeReady` BEFORE the database is opened,
and carried on the metadata rather than recomputed afterwards.

That ordering is load-bearing, not tidiness. Impact and trace both open the
bridge and only then ask about provenance, so on any platform or LadybugDB
build where a read-only open advances the file's mtime, every pre-stamp bridge
would report provenance-unknown from its first query onward — the exact
repo-wide regression this rule was chosen to avoid, arriving as a silent
downgrade rather than an error. It does not happen on Linux, which was measured.
It cannot be measured on Windows: pinning it by really opening the database
needs an in-process write→read reopen of the same bridge.lbug, which is a
documented limitation there. Rather than ship a Windows-skipped test and leave
the assumption unverified on the platform whose file semantics are most likely
to differ, the check moved ahead of the open so no platform has to be trusted.

The new guard forces the hostile case on every platform: the open is stubbed to
advance the database's mtime, and the verdict must still be "paired". It is
registered in the cross-platform list so the Windows and macOS shards run it,
and it has a control so it cannot pass vacuously.

Two existing fixtures mocked `readBridgeMeta` to return a stamped-era version
while never writing a meta.json — a state production cannot reach, since a
non-zero version can only come from a file that exists. They now write the
metadata their own mock claims to have read, rather than the helper being
loosened to accept metadata it cannot stat.

Mutation-verified twice: reverting the write-order branch turns both rejection
cases red while all four legacy-accept cases stay green, and moving the pairing
call back after the open turns the ordering guard red on its own.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(group): compute cross-repo completeness in one place

Three surfaces can return a partial cross-repo answer — impact, trace, and the
contract listing — and each decided for itself whether it was complete. Impact
carried the structured triple; trace said it in prose, if at all. An agent
reading a not-found trace had no machine-readable way to tell "there is no
path" from "there may be a path in a repo this sync could not read", which is
the difference between an answer and a floor.

`crossRepoCompleteness` is now the one computation, and its input deliberately
does not name where any of it came from. `BridgeMeta` is not in the signature
and must not be: `groupContracts` answers the same question from contracts.json
and never opens a bridge, so `version`, `repoListsUnreadable` and
`pairedWithDatabase` do not exist on that path. Each caller derives its own
`provenanceUnknown` — the bridge callers through `bridgeProvenanceUnknown`,
which stays separate for exactly that reason — and passes the boolean in.

Scope arrives as a predicate rather than a repo list or a subgroup, so
narrowing a query's scope stays a change to one argument at the call site.

The trace results now carry `truncated` / `truncationReason` / `riskEpistemic`
like impact does. `notes` is untouched; it remains an addition to the machine
channel, never the channel.

One correction to the approach as written: it said to pass the trace's two
endpoint repos as the predicate, but a destination trace declares no `to`. It
asks where a call lands, so any member may hold the answer — and an unreadable
provider repo is precisely how "no outgoing ContractLink leaves this repo"
becomes a wrong answer rather than an empty one. Filtering that path to the
`from` repo would have reintroduced the bug this unit exists to close, so it
passes every repo and a test pins it.

Two pre-existing paths become consistent with the vocabulary as a result: a
crossing-capped result now reports `truncationReason: 'partial'` alongside the
`truncated` flag it already set, and the destination path's `ambiguous` returns
now report the cap its `ok` and `not_found` siblings already reported. Both are
additive — no field is removed, and no `truncated` flips from true to false.

`truncationFields` returns a discriminated union now, so `truncationReason`
reads without a fallback on the branch where it cannot be absent.

Mutation-verified: reverting the provenance fold alone — one line in the shared
helper — turns 8 tests red across both surfaces, 2 new trace scenarios and 6
existing impact ones, which is the point of there being one helper.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): narrow the incomplete-repo set to the query's declared scope

A subgroup-scoped impact query was marked a lower bound by repos it had
explicitly excluded. The fan-out already drops every neighbour outside the
subgroup, so those repos could not have contributed a crossing to the answer —
and a completeness marker that fires on results it does not describe is how a
caller learns to ignore the marker.

The scope is the query's DECLARED one, not the one the walk reached. An
incomplete repo's contracts are absent from the bridge by definition, so it is
never in the traversed set; filtering on what was traversed would empty the
intersection on every query and silently restore the fail-open this channel
exists to close.

Declared scope here is the subgroup PLUS the query's own repo, which the
approach did not account for. The walk starts from that repo's contracts in the
bridge, so when it is the repo the sync could not read there are no crossings
to find under any scope — and a subgroup excluding it would have turned that
vacuum into a confident "nothing depends on this", for a tool an agent uses to
license a delete. That case reported a floor before this change, so narrowing to
the subgroup alone would have been a regression. The union only ever widens the
in-scope set, so it cannot re-mark a repo the query excluded.

Membership goes through the existing `repoInSubgroup` in both clauses, `exact`
for the origin equality, rather than growing a second notion of what it means
for a repo path to be in scope.

Sound only while `MAX_SUPPORTED_CROSS_DEPTH` is 1 — at depth 2 an out-of-scope
repo can sit between two in-scope ones — and that constraint is recorded at the
intersection.

Unscoped queries are byte-for-byte unchanged: `repoInSubgroup` answers true for
an absent subgroup, so the intersection is the whole set.

Mutation-verified: restoring the unfiltered predicate turns exactly the two
scoped cases red while the unscoped control and both in-scope guards stay green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): keep the preserved registry and the bridge from disagreeing

A total-failure sync refreshed contracts.json's diagnostic lists and left
meta.json alone. But meta.json, not contracts.json, is where runGroupImpact
reads completeness from — so the registry said "this sync could not read
app/backend" while a cross-repo query answered `{ cross: [], truncated: false }`.
Two surfaces describing the same run, one of them wrong, and the wrong one is
the machine-readable one an agent uses to license a delete.

The preserve path now refreshes the same two fields in the metadata. The
database stays untouched: it still holds the contracts being preserved, and
rebuilding it here would be the one write that could lose them.

Refreshing metadata is not free, though, and the obvious version of it is a
fail-open. The rewrite moves meta.json's mtime to now while bridge.lbug's stays
old, so an unstamped pair whose database is NEWER than its metadata — the shape
the write-order rule exists to reject — would come out of a preserve sync
passing the check. Writing "no stamp" does not help; the write-order comparison
is exactly what the moved mtime defeats. The verdict has to be recorded in the
metadata, because the refresh cannot avoid moving the mtime.

So `provenanceUnknown` is persisted whenever the existing pair does not already
check out, the existing stamp fields are carried through verbatim rather than
dropped, and `bridgeMetaMatchesFile` rejects the marker ahead of both the stamp
and the write-order heuristic. A pair that already matched is re-stamped
instead, which also upgrades a legacy unstamped-but-paired bridge to an exact
stamp. No preserve run can increase the number of pairs that pass the check.
The marker self-clears: `writeBridge` builds fresh metadata and never sets it.

`BridgeMeta` carries two reader-side fields documented as never persisted, and
this is the first code in the repo that reads metadata and writes it back. Both
are stripped explicitly before every write. `pairedWithDatabase` is the
dangerous one — persisted, it would tell every future reader the pair had been
verified — and a test seeds both on disk to pin that neither survives.

The write is not wrapped in a catch, unlike writeBridge on the success path.
There contracts.json is canonical and already written, so a stale bridge is a
recoverable degradation; here the write IS the guard against a confident wrong
answer, and swallowing its failure would reinstate the fail-open it closes.
`writeContractRegistry` above is unguarded into the same directory for the same
reason.

A group with neither file writes nothing: `readBridgeMeta` already answers
`version: 0` for an absent file, so a written one would say what the absence
already says while inventing state for a bridge that has never existed.

Mutation-verified three ways: dropping the marker write turns 6 red including
both laundering scenarios; moving the marker check below the stamp branches
turns the unstamped-laundering case red; removing the field stripping turns the
never-persisted test red. Each restored byte-exactly and re-verified.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): report group_contracts' completeness in the shared vocabulary

`group_contracts` returned contracts and cross-links and said nothing about
whether that listing was the whole story. An agent reading it after a sync that
could not open half the group got a confident-looking list with no way to tell
it was a floor — the same fail-open the impact path already closed, on a surface
that had no channel for the answer at all.

It now returns the registry's two diagnostic lists and the structured triple,
folded through the same helper the impact and trace surfaces use, so the three
cannot drift. The helper takes no `BridgeMeta` precisely so this path — which
reads contracts.json and never opens a bridge — can share it.

The three registry states stay distinguishable, which is the point:
  - key absent: the registry predates the field and has no opinion about which
    indexes opened, so the key is omitted rather than invented as `[]`, and the
    listing reports a floor. It cannot say which repos the sync failed to read,
    so it cannot claim to be complete.
  - key present and empty: measured, clean, not truncated.
  - key present and populated: the repos, and a floor.

`incompleteRepos` is dropped on this surface alone: both lists it derives from
are returned verbatim beside it, and a third name for the same repos is drift
waiting to happen.

The import is lazy, matching `groupImpact` and `groupTrace` in this same class.
`cross-impact.js` statically pulls the native LadybugDB binding through
`bridge-db.js`, and `service.ts` is loaded by every `gitnexus group` subcommand
including ones that touch no database.

One fix inside the same file that this unit forced: the registry loader gated
`missingRepos` with a bare `Array.isArray`, which admits `[{repo:'x'}]`. That
was inert while nothing read the list, but this change both returns it and folds
it into the completeness answer — so an unreadable value would have been printed
as a repo name and would have flipped `truncated` on garbage. It now uses the
same `recordedRepoList` gate `group status` already applies to the same field.
`missingRepos` has always been required, so unlike `unreadableRepos` it has no
"not recorded" state to preserve and an unreadable value degrades to empty.

Mutation-verified: reverting the fold alone turns 14 tests red and leaves the
control — the contract and cross-link payload this tool has always returned —
green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(cli): stop dropping group contracts' completeness fields on the way out

`group contracts --json` destructured `{ contracts, crossLinks }` from the
service payload and rebuilt an object from just those two. Everything else the
service returned was discarded on the way to stdout — so the completeness
fields the MCP tool now carries were invisible at the CLI, and the two surfaces
disagreed about the same registry.

It prints the payload whole now. A field added to the service reaches `--json`
without a matching edit here, which is the point: the re-serialized subset was
a second place that had to be remembered, and it was not.

The human-readable path gains the same signal in words. A listing built from a
sync that could not read part of the group shows counts that are a floor, not a
census, and it named neither fact. It now says so and names the repos when the
registry recorded them — and says the sync did not record which repos it could
read when it did not, because a listing that cannot say what it is missing is
still incomplete.

Mutation-verified: restoring the re-serialized subset turns the `--json` case
and the control red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): tell a missing registry entry apart from an unreadable one

`group status` printed MISSING for both "this repo has no row in the registry"
and "the registry itself could not be read", so an operator whose registry.json
was corrupt was told every repo was unregistered — and sent to re-register them
instead of to the one file that was actually broken.

The two are now separate. `missing` keeps its old meaning and still flags every
unusable repo, so an older consumer is unaffected; `unresolvable` is additive,
always present, and carries the reason that produced it.

This is the one caller that has to make that distinction, so it takes the
strict global-registry read. `readRegistry`'s `catch { return [] }` collapses a
malformed registry into an empty one, which is indistinguishable from a genuine
absence and is exactly what produced the wrong label. The cost is accepted
knowingly and recorded at the call site: the strict read rejects the whole
registry when any row fails to identify a repo, so one malformed row renders
every member unresolvable — including members whose own rows are fine. That is
the honest verdict, and it is reported as an unresolved state rather than a
clean one.

Choosing between the two labels needs to know whether a row exists at all,
which `registryIdentifies` answers by mirroring the two tiers the resolver
matches a bare group-config value on — registry name, case-insensitively, and
repo path. It deliberately stops short of the hashed-id and partial-name tiers:
those exist to be generous about what an operator typed, while this only picks
a label, and a looser match would relabel a genuine registry miss as an
unresolvable row — the same conflation this change removes, pointed the other
way.

The plan's third failure mode — a row that resolves but whose storage path
cannot be opened — turns out to be unreachable: `loadMeta` returns null on
every error and `checkStaleness` catches everything, so nothing after
`resolveRepo` inside the try can throw. The reachable per-repo case is
`resolveRepo` itself throwing, as it does for two registered clones sharing a
name, and that is what the tests drive end to end through the real CLI. The
code still handles the plan's case correctly if those helpers ever start
throwing.

Mutation-verified: reverting the split turns 6 unit and 2 CLI cases red while
both controls — a genuine miss, and a healthy group — stay green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(cli): say what the preserve path actually does to contracts.json

The sync summary announced "Did NOT write contracts.json" on the branch that
writes it. The preserve path rewrites the file — keeping the previous sync's
contracts and cross-links, replacing only the two diagnostic lists — so an
operator who checked the mtime and found it moved was told the opposite of what
had happened, on the command this PR exists to make legible.

It now says the previous contracts were kept and names what changed.

The no-prior-registry branch is narrowed for the same reason. It claimed
nothing at all was written, and that is no longer true either: this path still
records the run against an existing bridge's metadata. The claim is now scoped
to contracts.json, which is the file it can actually speak for.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): stop the total-failure log promising a preservation that did not happen

The warning fired before the prior registry was read, so it could only ever
promise one of the two things that might be true — and it promised the wrong
one to every group that has never synced: "keeping the contracts from the
previous sync" about a file that does not exist. The console line for that same
run, driven by `registryOutcome`, said the opposite.

It now lives inside the branch, after the read, with one message per outcome
chosen at the point the outcome is decided. The log and the console cannot
disagree, because the same fact selects both.

Both messages keep the warn level and the two repo lists.

Mutation-verified: reverting the split turns the no-prior-registry case red
while the preserved case — whose claim was already true — stays green. The
dry-run test's log filter was also widened to the sentence both messages share,
or the new wording would have made that assertion match nothing and pass
regardless.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): make the bridge-failure warning describe what the code guarantees

The warning after a failed `writeBridge` promised that cross-repo impact would
report `truncated` until a sync succeeded. Nothing on that path produces that
signal.

The swap is the last step: `writeBridge` builds the new database in a staging
directory and only then moves the old one aside. A failure during the build
therefore leaves the previous sync's `bridge.lbug` exactly where it was, beside
the `meta.json` stamped for it — a pair that passes `bridgeMetaMatchesFile`
with the previous run's `unreadableRepos`. The next cross-repo query answers
`truncated: false` from superseded contracts, which is the opposite of what the
operator was told to expect, and worse than being told nothing.

The warning now says what is actually true: contracts.json is intact and
canonical, the bridge was not replaced, cross-repo queries may still answer from
the previous sync's contracts, and nothing marks them as superseded.

The metadata is deliberately NOT re-stamped to make the original promise true.
That would recreate exactly the metadata/database mis-pairing the stamping on
the preserve path exists to prevent, and the comment at the warning records it.

The claim is asserted against captured log output rather than left to the state
tests. Those check which pairs match and what the preserve path writes; every
one of them stays green while this sentence reverts to promising a truncation.
An unasserted user-facing branch is the defect class this change is closing, so
it does not get to close it while remaining one.

No filesystem shape makes the real `writeBridge` fail while
`writeContractRegistry` succeeds — they write into the same directory one line
apart — so the failure is armed through a pass-through wrapper on the file's
existing mock. It delegates byte-for-byte unless a test arms it, and is reset
around the new suite.

Mutation-verified: restoring the original wording turns its own assertion red
and nothing else.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(mcp): name every registry outcome group_sync can actually return

The tool's description told agents `registryOutcome` is 'written' or
'preserved'. It has a third reachable value: 'no-prior-registry', returned when
nothing could be read AND there was no previous contracts.json to carry
forward. An agent calling this tool against a group that has never synced got a
value its own tool description said did not exist, and no way to tell it apart
from the case where the previous contracts survive.

The distinction is the whole point of the value. After 'preserved' there is a
registry to read — stale, but real. After 'no-prior-registry' there is nothing
on disk at all, so a following group_contracts or group_impact has no registry
rather than an old one. Those need different responses from the caller.

'not-attempted' stays undocumented because it is unreachable through this tool,
and a guard asserts it stays that way.

The code comment above the annotations claimed the preserve path does NOT write
contracts.json. It does — it rewrites the file, keeping the previous contracts
and cross-links and refreshing only the two diagnostic lists, which the CLI's
own summary was corrected to say a few commits ago. Left alone it would have
re-seeded the same wrong claim next to the text that now states it correctly.

Mutation-verified: deleting the 'no-prior-registry' sentence turns the guard red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(mcp): explain structural incompleteness on the impact tool and status resource

The impact tool's GROUP MODE paragraph described one cause of truncation — the
fan-out running out of room — and left an agent to assume that was the only one.
So a `truncated: true` carrying `truncationReason: 'incomplete-sync'` read as
"retry with a smaller scope", when retrying returns the identical floor forever:
the repos are absent from the bridge itself, and only a re-sync puts them back.
The old text also said the response carries the truncation fields "when it stops
early", which is wrong for that case — `truncatedRepos` names repos even when
ZERO crossings to them were attempted, because their contracts were never in the
bridge to cross to.

The paragraph now branches on the reason and gives each its remedy: 'timeout'
and 'partial' are runtime limits where a retry or a larger budget can help;
'incomplete-sync' is structural and the remedy is `group_sync`.

The reason union is now derived from an exported `as const` array rather than
written as a bare type. A type-only union gives a guard nothing to enumerate, so
the guard has to hand-list the members — and then it passes forever the moment a
fourth is added, which is the exact regression it exists to catch. The guard
iterates the runtime array instead. Verified by appending a probe member and
watching it go red, then removing it. The resolved type is unchanged; every
importer uses `import type` and none needed an edit.

The status resource said "Group index / contract staleness" and nothing about
the distinctions its payload now carries. It explains all of them: a repo absent
from the registry versus one whose entry could not be resolved, and the
`unreadableRepos` tri-state where an ABSENT key is not an empty one — absent
means the last sync never recorded what it could read, so cross-repo answers for
that group are a floor.

The description an MCP client actually receives lives in `getResourceTemplates`,
not in the context resource's inventory line the plan pointed at. Both now carry
the vocabulary, so the two surfaces cannot disagree about the same payload.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(group): serialize group syncs behind a fail-closed per-group lock

Two concurrent syncs of one group could lose one another's writes. Both read
the prior registry, both built contracts, both wrote — last writer won, and the
loser's work was gone with nothing reporting it. A group sync is long and
expensive and is exactly the operation whose lost update destroys contracts.

`syncGroup` now takes a lock for the whole persist section, acquired exactly
once. `acquireIndexLock` is not reentrant, so a second acquisition anywhere
below would deadlock the happy path rather than an edge case; `withGroupSyncLock`
has one call site and nothing inside it re-acquires.

The lock lives on a dedicated `sync-lock` directory inside the group directory,
mirroring the registry lock's dedicated directory rather than reusing the
resource's own — a lock directory that could collide with a per-repo index slot
repeats a bug the registry lock's comment already warns about.

It fails CLOSED, which is the opposite of `withRegistryLock` and deliberately
so. That one degrades to unlocked because it guards a sub-second JSON merge on
a latency-critical path; here running unprotected is the outcome the lock
exists to prevent. Three exits are covered: a timeout, an unwritable lock
directory, and the lock-free degradation the primitive performs silently.

That third exit needed a change in `index-lock.ts`, and it is the one declared
exception to keeping this work inside core/group/. `acquireIndexLock` answers a
read-only or permission-denied filesystem with a no-op handle that is
byte-identical in shape to a real one, so a caller for whom lock-free is not an
acceptable outcome could not tell the difference. It now carries an optional
`lockFree` marker. The change is additive by construction: no signature moves,
no control flow changes, nothing about when or how a lock is taken changes, and
every caller that ignores the field behaves exactly as before.

A filesystem probe inside the group module was considered and rejected on
evidence: `selectBackend` returns `socket` on Linux and Windows, where
`acquireViaSocket` never touches the filesystem and this branch cannot occur —
so a probe would refuse syncs on the two platforms that never degrade while
missing the one that does.

The timeout ceiling is a named 600s constant passed explicitly. The magnitude
matches the primitive's own analyze-sized default because a group sync is
analyze-shaped and a legitimately queued second sync must be able to wait out a
full first one. Passing it explicitly is about the override, not the magnitude:
`resolveTimeoutMs` resolves `GITNEXUS_INDEX_LOCK_TIMEOUT_MS <= 0` to Infinity,
which would turn fail-closed into a hang.

Cross-process exclusion is proved with a real spawned holder, not an in-process
mock, which cannot demonstrate the property this exists for. The lock-free
scenario pins `GITNEXUS_INDEX_LOCK_BACKEND=file` — unpinned it would pass on
two of three platforms while measuring nothing — and produces the failure by
injecting EACCES on one syscall rather than by chmod, so it runs identically on
Windows instead of being skipped there.

The CLI reports the failure through pino rather than a bare stderr write, which
this package lints as an error to keep that migration moving, and the test reads
the `msg` field rather than a raw substring — matching on the raw text would
have passed only by accident of quoting and would go green again if the line
were downgraded.

Nothing is skipped on any platform, and the test is registered for the
cross-platform shards.

Mutation-verified: removing the lock acquisition turns 6 scenarios red;
removing the lock-free rejection turns the degradation scenario red on its own.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): make the sync-lock timeout name a cause it can establish

The fail-closed lock surfaced the primitive's own timeout message to users for
the first time, and that message says the wait was on "another gitnexus
analyze" — a cause its detection path cannot establish. It is the same
confident-about-what-it-could-not-determine claim this PR exists to remove,
inherited rather than written.

The wrapper now throws its own. It names the group, the lock directory, the
operation, and the elapsed wait, and it says plainly that nothing was written.

The holder clause branches on `holderKnown`. The socket backend exposes no owner
metadata and reports a placeholder pid of -1, so on that backend — and on the
file backend's malformed or vanished-lock timeouts — the message says the lock
stayed held but the backend cannot identify who held it, rather than printing a
pid that means nothing.

The elapsed wait is measured by the wrapper. `IndexLockTimeoutError` carries
only `holder` and `holderKnown`; the figure exists solely inside the string
being replaced, so it had to be taken rather than read.

One pre-existing assertion changed with it: the timeout case asserted
`'Timed out after 600000ms'` from the inherited text, which is precisely the
message this replaces.

Mutation-verified: restoring the inherited message turns the three assertion
cases red and leaves the control — a real acquisition that succeeds — green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): stop a losing sync from downgrading the one that beat it to the lock

Serializing is not ordering. Both syncs run extraction outside the critical
section, so a total-failure sync that acquires second reads the winner's fresh
registry as `prior` and rewrites it with all-unreadable lists. The lock alone
does not prevent that — it only decides who goes second, and the loser then
overwrites a healthy registry with a description of its own failure.
Deterministically, not as a rare interleave.

The guard is a compare-and-swap on the registry file's own identity: stat
before acquiring, re-stat after, and write nothing when they differ. Identity is
presence plus size, mtime and inode — `writeContractRegistry` publishes through
write-then-rename, so a real replacement always changes the inode even if size
and mtime happen to collide.

Deliberately NOT keyed on `generatedAt`, for two independent reasons. It is
stamped when the registry object is built, before the lock is acquired, so a
winner that waited would write a value older than the loser's start. And the
preserve path carries it forward verbatim by design — it dates the contracts,
not the write — so after any preserve sync it does not date the write at all,
leaving the comparison blind on exactly the pairing this guards. A file-identity
compare also needs no cross-process clock agreement.

The skip reports the existing `preserved` outcome. Nothing was written and a
prior registry was kept, which is what that value already means; a new one would
falsify the guard asserting the sync tool's description names every reachable
outcome, and would fall through the CLI's outcome chain, which has no fallback.

The bridge metadata refresh is skipped too, which the plan did not specify.
`refreshPreservedBridgeMeta` stamps THIS run's repo lists into meta.json, and
meta.json is where cross-repo impact reads completeness — so writing it would
report as unaccounted-for exactly the repos the winning sync had just accounted
for. That is the same downgrade being refused, one file over. Skipping both is
what makes `preserved` an honest answer here.

Mutation-verified: removing the after-stat and the skip turns the three decisive
cases red while both non-misfire controls stay green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(group): run the bridge swap inside the caller's critical section

The bridge swap needed the group lock, and could not take it: `syncGroup`
already holds it when it calls `writeBridge`, and `acquireIndexLock` is not
reentrant. Acquiring inside the swap would deadlock every sync on the happy
path rather than on an edge case.

So the body splits the way this repo already splits this shape — a lock-free
`writeBridgeUnlocked` whose precondition is that the caller holds the lock, and
a thin `writeBridge` wrapper that acquires it for direct callers, mirroring
`registerRepoUnlocked` / `withRegistryLock`. `syncGroup` calls the inner one;
everything else keeps calling `writeBridge` and is now serialized by it.

`writeBridge`'s exported signature is byte-identical to before, so no caller
changed and nothing about the exported surface moved.

The precondition is enforced by a comment naming the single production call
site, which is what the existing precedent does. A type could carry it, but the
repo's own answer to this question is a comment, and diverging here would make
this the odd one out for no additional guarantee.

`refreshPreservedBridgeMeta` is deliberately left unsplit. Its one caller is
already inside the critical section and it has no test callers, so an acquiring
wrapper would be dead code standing in for a guarantee the caller already
provides — and moving the lock inside it would be the second acquisition this
change exists to avoid.

Scope: this delivers writer-writer exclusion only. The reader-side promotion of
a leftover `.bak` into place runs on ordinary reads, outside any lock, and is
not claimed here — the pairing check remains the reader's defense. Confirmed as
live behavior while writing the crash-recovery test, which asserts on file
state rather than through `bridgeExists` for exactly that reason.

One test file beyond the two the unit named had to change: a suite mocks
`bridge-db` to inject a `writeBridge` failure and exercise the bridge-write
warning. Once the sync calls `writeBridgeUnlocked`, that fault was being
injected into a function the path no longer calls, and the test went red. The
mock is repointed.

Mutation-verified three ways. Pointing the sync back at the acquiring wrapper
deadlocks a single UNCONTENDED sync — the evidence that the nesting defect is
real and that this split is what prevents it. Removing the wrapper's
acquisition turns the direct-write exclusion case red. Making the lock-free half
acquire for itself turns the held-lock case red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(hygiene): reach every tracked text file with the raw-byte guard

The guard claimed to protect tracked source from a raw NUL — the byte that
makes git classify a file binary and costs it its diff, its inline comments and
its three-way merge on GitHub. It matched on an end-anchored extension regex
covering the JavaScript family, so most of what this repo tracks was never
looked at: JSON, YAML, TOML, Markdown, snapshots, SQL, protobuf, the .NET
project files, the shell and batch scripts.

Worse, an extension regex cannot reach a file that has none. `Dockerfile`,
`CODEOWNERS`, `LICENSE`, the husky hook and every bare dotfile were unreachable
by construction — no amount of widening the pattern would have covered them —
so a second basename filter had to exist for the claim to be true.

It stays an allowlist rather than becoming "everything git tracks", because the
repo legitimately tracks binaries whose extensions must stay out.

The two filters together now collect every one of the 5000 tracked files except
31 — the 30 native prebuilds and one PNG — and those 31 are exactly the files
that carry a NUL. The allowlist no longer has a gap that is not a genuine
binary.

The planted-fixture cases route through the collector's own predicate rather
than straight into the scanner. The pre-existing fixture test bypassed the
filter entirely, so it could only ever prove the byte locator worked, never
that the collector would hand it the file — which is precisely how the gap
survived.

Mutation-verified both ways: removing the basename filter drops `.gitignore`
and `Dockerfile` from the planted results, and reverting the extension regex
drops `.json` and `.md`.

One added case is a preservation pin rather than proof — that tracked binary
formats stay out passes either way, and guards the allowlist from becoming a
denylist later.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(hygiene): stop the byte guard reading the vendored grammar tree

Widening the guard to every tracked text format also pulled in the vendored
tree-sitter grammars, and those are where the bytes are: four generated
`parser.c` files come to 62 MB between them, Kotlin's alone 33.7 MB. Excluding
that root drops 76 files but 66% of the bytes the scan reads — 97 MB down to
33 MB.

The exclusion is a single anchored prefix, matched case-sensitively with
`startsWith`, and both halves of that matter. A `vendor` path-SEGMENT match
would also drop first-party fixtures this repo tracks under directories named
`vendor` and `Vendor` — a Kotlin one, a PHP one, and three files under
gitnexus-web — silently narrowing coverage while the assertion pinned the loss
in place. Case-insensitivity would do the same to a `Vendor` directory at the
excluded root's own level.

The root is named in the guard itself, so the claim that it covers every
tracked text file stays honest about the one place it deliberately does not
look.

The cost comment was wrong and is now measured rather than estimated. It said
"the scan is ~10 ms" — ambiguous between locating the byte and reading the
files, and stale in its byte basis. Locating is ~14 ms; the reads dominate it
by two orders of magnitude, which is the actual reason for the concurrency pool
and the actual reason this exclusion is worth having. Every figure was
re-derived from the finished file rather than carried over from a draft.

The header's claim that `git ls-files` "never descends into vendor" was already
false — vendored code is tracked, so all 106 of its files were being reported
and read. Corrected here, where the distinction becomes load-bearing.

Registered in the cross-platform list first and given a shard weight second.
The weight table is only consulted for files already in that list, so a weight
entry alone is inert and the shard test filters unregistered keys without
complaining. The three-way split stays within 1.01x of ideal.

Mutation-verified three ways: a case-insensitive segment match, a
case-sensitive segment match, and a case-insensitive anchored prefix each turn
an assertion red.

The casing half was initially unfalsifiable — nothing tracked is named
`gitnexus/Vendor/`, so a tracked-set assertion could not distinguish it. Rather
than leave the claim unpinned or invent a fixture, it is pinned on the
predicate with a synthetic path; the tracked-set assertions pin the anchoring.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(group): make the strict-read test able to see which read ran

The file bound both registry exports to one mock:

    readRegistry:       (...args) => readRegistryMock(...args),
    readRegistryStrict: (...args) => readRegistryMock(...args),

so the case named for the strict read asserted a behavior it could not
attribute. Point the production call at the lenient export and every assertion
still holds, because the mock answers the same way whichever one is called.

That is not a hypothetical. With this file as it was, and `syncGroup` mutated to
call `readRegistry` instead of `readRegistryStrict`, all 32 tests passed — the
suite was blind to the exact substitution it exists to prevent, and the fix it
guards could have been reverted without a single red.

The exports now have separate mocks: the lenient one always resolves an empty
list, which is its real contract, and only the strict one is armed by the cases
that need a failure. The named case also asserts directly that the strict read
was called and the lenient one was not, so the attribution is explicit rather
than implied by an outcome.

No tests added — the unit is about what the existing ones can see.

Mutation-verified: the same substitution now turns 24 cases red, including the
named one, and everything stays green unmutated.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(group): pin the CLI output branches this PR introduced

The three sync outcomes and the status table's new labels had no assertions.
Every one of them is a sentence about what happened on disk, and this PR
corrected several that were false — a preserve branch that announced it had not
written the file it rewrites, a status table that called an unreadable registry
a missing entry. Text that describes state, with nothing pinning it, is how
those got wrong in the first place.

Six cases drive the real CLI end to end, through the two shapes that need no
indexed repo: members absent from the registry, and members registered at a
storage path with no index file, which makes every repo unreadable. The file
header claimed no LadybugDB-backed command was driven end to end; that is no
longer true and it now says so.

Each branch was suppressed in turn and its assertion goes red — all five that
the plan named.

One of those mutations first reported PASS, and the cause is worth recording: the
string being suppressed also appears inside a neighbouring branch's comment, so
the harness silenced the wrong line. That is a bad mutation, not a weak test.
The harness now asserts the marker it suppresses is unique before trusting the
result, and the redone check goes red.

The plan's sixth scenario is already covered by an existing case that asserts
both labels in one table, so it is not duplicated. A seventh case was added
beyond the plan: without a populated-list case, "prints neither line" would pass
just as well against a CLI that never printed that line at all.

Adds about 15s of measured spawn time locally; CI runs these against the built
dist, which is materially faster per spawn.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(group): assert the MCP payloads by exact shape, not by partial match

Nothing asserted what the group tools actually return. The sync response's
unreadable list and registry outcome, and the contract listing's incompleteness
fields, are documented in the tool descriptions an agent reads — and could have
been dropped in a refactor without a single test noticing.

The assertions are exact-shape rather than partial. A `toMatchObject` would let
a dropped key pass, which is precisely the regression these exist to catch: the
failure mode is an absent field, and a partial match is defined not to see one.
Absences are additionally asserted explicitly.

The tri-state has to survive the response boundary, and it is the reason exact
shape matters here more than usual. An absent `unreadableRepos` means the sync
never recorded what it could read, so the listing is a floor; an empty list
means it measured none; a populated list names them. Collapsing absent into
empty turns "we do not know" into "we checked, it is fine" — so a mutation that
replaces the conditional spread with `?? []` is covered specifically, not just
the outright deletion.

Mutation-verified per field: removing either sync forwarding line, deleting the
conditional spread, replacing it with the invent-empty form, dropping the
truncation triple, or hardcoding the provenance flag each turns an assertion
red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(group): stop the bridge input narrowing what unreadableRepos means

The same field had three definitions. The registry and the bridge metadata both
say it covers a repo this sync could not extract from — an index that would not
open, or an extractor that threw partway through, one bucket because the
consequence is one thing. The bridge input said only "whose index could not be
opened", which describes one cause and silently excludes the other.

It now points at the registry's definition instead of restating it a third
time. A definition written once and referenced cannot drift; three copies of it
already had.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(group): record what the mtime pairing does and does not prove

The write-order fallback is a heuristic standing in for provenance, and a
future reader deciding whether to lean on it needs to know where it breaks
before they do. Both directions are now stated where the function is read
rather than only in the plan that introduced it.

The false-accept direction is a non-monotonic wall clock — mtime is realtime,
so an NTP step back, a snapshot restore, or container skew between the two
writes can leave a mis-paired set reading as ordered. Coarse filesystem
granularity is explicitly called out as NOT being that hazard, because it looks
like it: it collapses a pair written together to equal times, and equal is
accepted, which is the right answer for that pair.

The false-reject direction is any copy or restore that rewrites the database's
mtime after the metadata's. An intact legacy pair is demoted to a lower bound
and stays there until a sync re-stamps it, because nothing on the read path can
tell it apart from the swap window it imitates.

That second direction corrects a claim made while planning this work: that the
rule could only ever demote pairs already broken. It cannot. `cp -r` and
`rsync` without timestamp preservation both produce it on a healthy group, and
saying otherwise where the code is read would leave a future reader to discover
it the hard way.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(storage): stop a corrupt registry quoting its own bytes into errors

`JSON.parse`'s SyntaxError embeds a window of the source around the failure —
V8 gives exactly ten characters either side — and the strict read rethrew it
untouched. The registry persists HTTPS remote URLs with their userinfo, so a
file that breaks next to one puts the credential into the error:

    Unexpected token 'L', ..."end.git"},LEAKCAN4RY"... is not valid JSON

The parse now has its own guarded region and reports the path and the failure
class, matching the two corrupt-registry errors already in this function.

The original error is discarded — not logged, not attached as `cause`. This
codebase's convention elsewhere is to hand the logger the Error so it captures
stack and cause, and following that convention here is precisely what would put
the byte window into the log. Under MCP stdio that log is written to the
client's log file on disk, so the thrown-error channel was never the only one
that mattered. The `catch` takes no binding, so the error cannot be reused by
accident later.

That was not theoretical: a sibling commit routes this message into
`unresolvableReason`, which `group status` returns to MCP clients and prints in
the CLI table. Every channel was traced — throw, cause, inspect with the full
chain, the logger, and both downstream consumers.

The leaking shape is narrower than it first appears, and worth recording. The
windowed message only fires when the parser fails at a value-start or trailing
position; a break inside a quoted string yields an unterminated-string error
carrying no window. So a plain mid-URL truncation does not leak — a short write
landing over a longer one does, leaving a URL fragment where a value was
expected. That is a reachable shape for the one machine-wide file every
gitnexus process writes.

The test asserts the message still names the path and the corruption class, not
only that the secret is absent. Asserting absence alone would stay green if the
message became empty.

Mutation-verified: restoring the raw rethrow brings the token back verbatim.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(storage): drop the stale lenient call-site count

The docstring said keeping `readRegistry`'s signature untouched leaves "its
nine other call sites" unaffected. There were thirteen when the discrepancy was
noticed and fourteen by the time it was fixed. The same figure appeared in the
test file's header.

Replaced rather than corrected. A count in prose next to code that moves is a
claim that goes stale without anything failing — which is the defect class this
change set exists to remove, so re-seeding a fresh number would be repeating it
with a longer fuse. The argument was never about the quantity: leaving the
signature alone keeps every lenient caller provably unaffected whether there is
one or fifty.

Also withdrawn while here: the claim that the bridge schema-version guards
diverge between call sites. They do not — the two forms are complements for
every value a writer can produce, there are three sites rather than the two
claimed, and all three agree. Recording a divergence that does not exist would
leave a future reader chasing it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(group): add an auditable finding-to-commit map

The Definition of Done claims every review finding has exactly one commit and
that reverting it reintroduces that finding and no other. Without a map that
claim is only checkable by whoever holds the review report, which is one person
for a short time.

The map lists all 28 primary findings against their commits, the three findings
whose suggested fix was deliberately not implemented and what shipped instead,
and the four defects found while executing that no reviewer raised.

It also records the revert contract honestly. Revertability is
dependency-aware, not absolute: the shared completeness helper has three
consumers, so reverting it alone does not build. That coupled set is named
rather than left for someone to discover mid-revert.

Two sections exist because the work produced them, not because the plan asked.
Six claims in the plan turned out to be contradicted by the code — among them a
scope predicate that would have reintroduced the bug its unit was closing, and
an assertion about the mtime rule that was simply wrong. Recording only the
findings would leave the impression the plan was followed as written. Five
residual risks are listed for the same reason, including that R14 is not met on
this PR: the diff attribute works locally but GitHub reads it from the base
side, so this PR's own sync.ts stays binary in the web view and every PR after
it renders as text.

Not under docs/ — that path is gitignored, so a map written there would never
reach the PR and the audit it exists for could not be performed by anyone else.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): read a version that is not a version as no provenance

Raised by the check bot on this PR, and real — the bot found one symptom of it;
the field splits four gates apart, not one.

`readBridgeMeta` accepted any numeric `version`, and `0` is this file's word for
"no provenance". A parseable but impossible value — negative, fractional — is
not a schema version, and each gate that reads the field disagreed about it:

  ensureBridgeReady      `> 0 && !== CURRENT`  → opens the bridge
  openBridgeDbReadOnly   `> 0 && !== CURRENT`  → opens the bridge
  bridgeExists           `=== 0 || === CURRENT` → says it is not there
  bridgeProvenanceUnknown `=== 0`               → reports the answer complete

Four verdicts about one file, and the last one is a fail-open of exactly the
class this PR exists to close: a bridge nothing can vouch for, reported as
fully accounted for.

The suggested fix was to widen the provenance check to `<= 0`. That closes the
reported symptom and leaves `bridgeExists` still disagreeing with both openers,
so it is fixed at the reader instead: a version that is not a positive integer
normalizes to the sentinel the gates were all written against. One change, four
gates agreeing by construction, rather than teaching each of them the same new
case and hoping the fifth reader remembers.

Infinity is covered too, though by the pre-existing type check rather than the
range one — JSON cannot carry it, so it arrives as `null`. Recorded at the test
so the case is not mistaken for proof of the range check.

Mutation-verified: restoring the loose numeric check turns the negative and
fractional cases red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): stop a malformed contracts.json reading as an unresolvable registry entry

Raised by the check bot on this PR. Its stated mechanism was wrong — `loadMeta`
returns null on every error and `checkStaleness` catches everything, so neither
can throw — but its conclusion was right, and there is a concrete path it did
not name.

`readContractRegistry` is a bare `JSON.parse(content) as ContractRegistry` with
no shape check, and the snapshot lookup guarded only the registry object:

    registry?.repoSnapshots[repoPath]

The `?.` covers `registry` being null, not `repoSnapshots` being absent. A
contracts.json without that field — a legacy file, a hand-edit, a truncated
write — throws `TypeError: Cannot read properties of undefined`, which lands in
the catch that labels failures as unresolvable GLOBAL-registry entries. So a
group whose own contracts file is malformed reported every repo as a broken
registry row, sending the operator to repair a file that was fine.

An error from one cause presented as another, which is the defect this PR has
been removing everywhere else.

The optional chain closes the crash. The try is also narrowed to the call that
earns the label: only `resolveRepo` sits inside it now, so "did not resolve"
describes something that actually failed to resolve rather than whatever else
happened to throw nearby. The comment records why the other two calls in that
block cannot throw, so the next reader does not have to re-derive it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(group): give the completeness fold a module no native binding reaches

The shared fold ended up in `cross-impact.ts`, which statically imports
`bridge-db.ts` and through it the native LadybugDB binding. `groupContracts`
therefore reached it through `await import('./cross-impact.js')` — loading that
whole module graph to run a Set union and a ternary. Measured: 44-51ms and
8.4MB of RSS on first call, paid once per MCP server and once per
`gitnexus group contracts` invocation.

`completeness.ts` holds the vocabulary and the fold and imports nothing but
types. `service.ts` imports it statically; the lazy import and the comment
justifying it both go. `cross-impact.ts` re-exports so the three surfaces still
have one import site for the vocabulary.

Three other duplications collapse into the same move.

`traceCompleteness` was hand-writing `{truncated, truncationReason,
riskEpistemic}` — a third writer of the pair `truncationFields` exists to keep
mechanically linked (#2787), in the file the consolidation had just touched. It
calls the helper now.

`recordedRepoList` existed twice, byte-identical, one copy's docblock saying it
mirrored the other. That gate is the predicate the whole
absent-vs-empty-vs-populated distinction rests on, applied to the same two
lists on both the registry and the bridge — tightening one copy would have
fixed one surface silently. One definition now.

The trace's scope predicate compared repo paths with `===` while its sibling in
`cross-impact.ts`, added in the same change, went through `repoInSubgroup` with
a comment about not growing a second notion of membership. It had grown one:
the helper normalizes separators and strips trailing slashes, so the same
group.yaml spelling could be in scope for impact and out of scope for trace.

Also here: `registryIdentifies` was a third, weaker copy of the registry's path
rule — it skipped `realpath`, so a symlinked row would not match where the real
resolver would. It uses `canonicalizePath`/`registryPathEquals` now.
`contracts.json` is no longer respelled as a literal in `sync.ts`; `storage.ts`
owns the name it reads and writes. And the runtime-truncation predicate is
bound once instead of written out at both the flag and the reason, where
forgetting the second would label a retry-able answer `incomplete-sync`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(group): give the lost-the-race sync its own outcome instead of overloading preserved

A sync that finds contracts.json replaced while it waited for the lock reported
`registryOutcome: 'preserved'`. That value already meant something else, and the
two differ in exactly the thing the value is for: `preserved` rewrites the file
with this run's diagnostics; this path does not touch it and deliberately does
not record them.

So both surfaces stated something false about disk. The tool description told
agents `preserved` means "contracts.json was rewritten ... refreshing only
missingRepos/unreadableRepos to describe THIS run (the file changed)". The CLI
said "only the unreadable/missing repo lists were refreshed to describe THIS
run". On the lost-race branch nothing was written and the log line beside it
says so outright.

That is the defect class this whole change set removes, reintroduced by the
change set itself — and the reasoning recorded at the time makes it worse, not
better: a new value was rejected because it "would fall through cli/group.ts's
outcome chain, which has no fallback branch". A renderer limitation decided a
domain value, and the description then had to cover two states with one
sentence that fits one of them.

`superseded` is its own outcome now, described in its own words to agents and
rendered in its own words at the CLI. The registry on disk is FRESHER than this
response's diagnostics, which is the opposite of every other non-written
outcome and is why an agent needs to tell them apart.

The CLI renders from a `Record` keyed on the union, so the next outcome fails
the build here rather than printing nothing — the gap that made folding the
state in look like the cheap option.

The description guard is scoped per clause rather than over the whole string.
It forbade "untouched" anywhere, which was right when one clause could only lie
in that direction and wrong now that another clause is accurately untouched. It
also asserts the superseded clause says so, or the two collapse back into one
word for two states.

Found by the quality pass over this branch, not by review.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(group): read bytes and stat through one handle, not two path lookups

CodeQL flagged both sites as `js/file-system-race`, high severity, and it is
right about the shape. `stat(path)` followed by `readFile(path)` is two
independent path resolutions with a window between them — the classic
check-then-use race.

It also made the assertions weaker than they read. These two tests exist to
prove a specific file was left untouched, and two lookups can land on different
inodes, so "the bytes and the mtime are both unchanged" was not actually a
statement about one file. The distinction is the whole point here rather than a
technicality.

`snapshotFile` opens the path once and takes both answers from that handle. The
race is gone because there is no second lookup, and the assertion now genuinely
concerns one inode.

I had previously triaged these as below the ruleset's threshold and left them
for the repository owner. That was wrong: they carry
`security_severity_level: high`, and the branch ruleset gates on
`high_or_higher`, so they were blocking the merge rather than sitting under it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
2026-08-26 09:37:16 +01:00
azizur100389
e87b1c3ffd
fix(php): gate imports by Composer autoload map (#2987)
* fix(php): gate imports by Composer autoload map

* fix(php): handle Composer catch-all mappings

* test(php): clarify Composer fallback coverage

* bench(php): fold Composer into canonical arm

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-25 07:56:41 +01:00
azizur100389
b77d6f662b
fix(kotlin): resolve imports from declared packages (#2990)
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azizur100389
87dc6c4d00
fix(go): gate imports by module path (#2984) 2026-08-18 14:31:40 +01:00
azizur100389
7f0ab16ffe
feat(routes): support JS data route tables (#2972)
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MyShining
fe3d7e56be
feat(spring): detect non-HTTP handler entry points (#2891)
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2026-08-16 15:16:21 +01:00
azizur100389
dac33d8056
fix(java): resolve imports from declared packages (#2955)
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Resolve Java imports against parsed package declarations, expand package wildcards deterministically, and keep external imports unresolved when no in-repo package declares them.

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-15 11:53:28 +01:00
Gergő Magyar
28187bb3a7
fix(typescript): resolve imports against declared config, not path suffixes (#2953) (#2956)
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* fix(typescript): resolve imports against declared config, not path suffixes (#2953)

TypeScript/JavaScript/Vue import resolution ended in `suffixResolve`, which
answers "does any file in this repo have a path ending in this specifier?" and
answers it by dropping leading segments until something matches. That is not
module resolution, and it failed in both directions at once:

  - `@acme/telemetry/nest`, a registry dependency with no in-repo file, landed
    on the repo's only path ending in `nest/index.ts` — a false IMPORTS edge at
    confidence 1.0, indistinguishable downstream from a real one. The reporter
    measured 44 of 74 `apps/ -> packages/` edges landing on two such files.
  - `@repo/utils`, a first-party workspace package, resolved to nothing: its
    name lives in `packages/utils/package.json` and appears in no file path, so
    a path matcher cannot find it. Zero CALLS from 75 import statements.

Both come from the same missing input — nothing read the config that says what
exists — so both are fixed by reading it.

Replaces the suffix matcher on this path with the algorithm tsc and Node
actually run, in their order: relative/absolute, `#imports`, tsconfig `paths`
(longest literal prefix wins, every target tried), tsconfig `baseUrl`, then the
workspace package's own `exports`/`main`. A specifier none of those declare is
external, and resolves to nothing. There is deliberately no fallback.

New:
  - `typescript/tsconfig.ts` — every tsconfig/jsconfig in the repo with
    `extends` chains resolved, nearest-config-wins per file. The old loader read
    three filenames at the repo root, required `paths` to exist, and kept only
    `targets[0]` — none of which describes a monorepo, where `apps/web/
    tsconfig.json` is what governs `apps/web/src/main.ts`.
  - `typescript/module-resolution.ts` — the algorithm.
  - `typescript/file-candidates.ts` — 11 TS-family extensions, replacing a
    shared 39-entry list spanning every indexed language, so a TypeScript
    import can no longer resolve to a `.py` file.
  - `import-resolvers/node-workspace-packages.ts` — in-repo manifests, with
    `exports` subpath maps, patterns, condition nesting, and the restriction
    that a package declaring `exports` exposes only what it lists.

The per-pass `SuffixIndex` is gone from these three adapters: real resolution
derives nothing from the file list — every candidate comes from a declared
source and is checked with one `Set.has` — so there is nothing left to cache.
Their `*-import-index-reuse` guards and the JS index-vs-scan differential are
deleted with the mechanism they measured; the cross-language contract test
moves the three languages to its existing `KNOWN_UNINDEXED` channel, and pins
the exemption as a list so a fourth arrival is deliberate.

Python, Ruby, Java, Go and the rest still route through `suffixResolve` and are
untouched here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* test(scope-resolution): assert every resolver refuses external imports (#2953)

One property, for all 16 registered resolvers: a specifier naming something
outside the repository must not resolve to a file inside it.

That is the property #2953 was filed against, and its violation is not a
missing edge but a fabricated one — an IMPORTS edge at full confidence between
two files with no relationship, which `impact` then reports as blast radius.
The mechanism is shared (`suffixResolve`), so the guard is too.

Every case pairs an external specifier with a DECOY: an unrelated in-repo file
whose path ends the way the specifier does. Without one a resolver that merely
found nothing would pass while holding no property at all, so each case also
asserts the decoy is reachable by the spelling that SHOULD find it — a typo in
a fixture cannot manufacture a pass.

Two fixtures had to be corrected before the results meant anything, and both
would have recorded a false gap:

  - C# reads its #1881 gate from scanned namespace evidence and fails OPEN
    without any, so passing `undefined` measured nothing. Armed, C# holds.
  - C++ was posting a pass on an extension mismatch (`vector` could never match
    `src/vector.hpp` whatever the resolver did). Given the header spelling, it
    does not hold.

Result: six hold it — TypeScript, JavaScript and Vue because they resolve
against declared config only (#2953); Python (#898) and C# (#1881) because they
gate the fallback on in-repo evidence; Rust because `::` never decomposes into
a path suffix, which the decoy-reachability arm confirms is a real pass rather
than a vacuous one.

Ten do not, and are recorded in KNOWN_GAPS with what each currently answers:
Java, Kotlin, Go, Ruby, PHP, Dart, Swift, C, C++, COBOL. The map is a work
list, not an allowance — the entries are ASSERTED, so a language that starts
holding the property fails here and its line gets deleted deliberately rather
than rotting into a lie.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* fix(typescript): admit only declared workspace packages, and fix four resolver defects (#2953)

Review of #2956 found one boundary bug and four correctness defects. The
boundary one is the same defect class this PR exists to fix, arriving from a
different direction.

## The workspace boundary (review)

`loadNodeWorkspacePackages` registered every `package.json` the repo-wide scan
found, and never read `pnpm-workspace.yaml` or a root `workspaces`
declaration. Finding a manifest is not the same as the workspace admitting one:
an app importing registry package `foo` would bind to an excluded fixture or
example that happens to declare `name: "foo"` — the false-positive half of
#2953, from a new source of evidence. This repository is the example, since
`test/fixtures/**` declares `@repo/utils` among others.

The admitted set now comes from the declaration — `workspaces` (array and yarn
object form), `pnpm-workspace.yaml`, `lerna.json`, with `!` exclusions and
`*`/`**` — plus the root package itself. A repo that declares no workspace has
exactly one package: the root. A negative fixture pins it, with a named package
outside the declared globs that must not resolve.

## Four defects

  - tsconfig `paths` targets were resolved against the config's own directory
    when it declared `paths` but inherited `baseUrl`. tsc resolves them against
    the EFFECTIVE base, so an extending config loaded the right alias pattern
    and pointed every target at the wrong directory.
  - two configs in one directory were ranked by directory-listing order, so
    `tsconfig.base.json` could govern instead of `tsconfig.json` and a config's
    own `paths` went invisible. Found by the test written for the fix above.
  - an unexported package subpath also tried `<dir>/src/<subpath>`. Nothing
    declares that mapping; it is the same kind of guess this PR removes, and
    the import it "resolved" is broken in the real project too.
  - `imports` pattern keys (`"#internal/*"`) were looked up exactly, so a valid
    `#internal/foo` never matched. `exports` and `imports` now share one
    matcher, which is where they should never have diverged.
  - a relative specifier climbing past the repo root was silently clamped, so
    `../../../secret` from `src/main.ts` became `secret` and could resolve a
    root file it never named.

## Test rigor

The conformance suite asserted less than it claimed. The decoy-reachability arm
only checked non-empty, so five cases paired `reachesDecoy` with a different
file than `decoy` and passed while establishing nothing; the KNOWN_GAPS arm
likewise accepted any in-repo answer instead of the recorded one. Both now
assert the exact file. The reachability arm runs only for languages that HOLD
the property — for a gap language the recorded-answer assertion IS that proof,
and for Swift and COBOL no other spelling exists, since `Foundation` and
`EXTERNAL` name the in-repo directory and copybook as well as the external
module, which is precisely why those resolvers cannot tell them apart.

## Benchmarks

Both `--check` guards were red, and both were reporting something true.

`import-target`: the ts-family arms resolved 0 of 3200 imports. Their corpus is
bare specifiers with no config, which the deleted `suffixResolve` answered
without one — so the arms measured an empty branch while printing a clean
scaling ratio. Each now carries the config its corpus is spelled for, and the
`deep` arm's uniform prefix reaches it. THE FINGERPRINTS THEN MATCHED THE
RECORDED BASELINES EXACTLY: same corpus, same targets, once the config it
always implied is passed explicitly. Retained per-pass index went from
26 745 296 B (js, ts) and 28 884 016 B (vue) at 32 000 files to 0-16 B, because
these resolvers no longer build one; they move to the `HEAP_BOUNDED` tier rust
already occupies for the same reason. Depth ratio moved 2.0 -> ~2.2 and the
budget goes to 2.6: candidates now carry the 16-segment baseUrl prefix, so each
`Set.has` hashes a longer string — linear in path LENGTH, independent of file
COUNT.

`scope-capture`: TypeScript capture fingerprint drift, caused by this PR's 12
new `.ts` fixtures entering the corpus. Attribution is exact rather than
inferred — moving that one fixture directory aside returns the fingerprint to
`f719163e…` byte-for-byte with `fixture_count` back at 155 and all 15 languages
passing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* fix(typescript): honour exports fallback arrays, paths precedence and package extends (#2953)

Second review round. Four findings, judged against what this tool is: a static
analyser building a code graph, not a compiler. The bar is resolving what the
project DECLARES, on a checkout that may never have been built or installed,
and never inventing an edge.

  - `exports` and `imports` ARRAYS were skipped. An array is Node's ordered
    fallback list, and `{"./feature": ["./dist/feature.js", "./src/feature.ts"]}`
    is exactly what a workspace package publishes to mean "built output, or
    source". Skipping it dropped the declaration entirely and left the package
    looking as though it exported no subpaths. The source arm is the one that
    matters here, because `dist/` is build output and is not indexed — and for
    a static analyser the build need not have run at all.
  - an exact `paths` pattern did not reliably outrank a wildcard. `a` and `a*`
    both match `a` with the same literal prefix length, so sorting on length
    alone left tsc's exact-wins rule to declaration order.
  - package-form `extends` (`"@acme/tsconfig"`) was refused outright. Not
    indexing `node_modules` is different from not READING it, and a shared
    internal base is where a monorepo puts the `paths` its packages import
    through. It is now read from disk, walking `node_modules` up from the
    extending config the way Node does, and absent on an un-installed checkout
    it degrades to whatever that config declared itself.

    The test pins what tsc actually does with such a base rather than what one
    might hope: `extends` never rebases `baseUrl`, so a package base's paths
    point at the package's own directory. That is why a published base rarely
    contributes aliases a repo's files resolve through, and why the
    `@tsconfig/*` family — which sets `target` and `lib`, never `paths` — is a
    no-op here either way.
  - CodeQL flagged `String.replace('*', …)` in two places as replacing only the
    first occurrence. Node subpath patterns and tsconfig `paths` both allow AT
    MOST one `*`, so that IS the specified behaviour — but the spelling states
    it by accident and reads as the replace-all footgun. `substituteStar`
    slices at the known index and says the rule.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* fix(typescript): treat `exports` as the whole interface, and keep empty tsconfig scopes (#2953)

Third review round. Two findings, both valid, both cases of this resolver being
laxer than the thing it models — which is the direction that fabricates edges.

  - `exports`, when a manifest declares it, is the package's ENTIRE public
    interface: Node ignores `main` outright and refuses any subpath the map
    does not list. This resolver already honoured that restriction for
    SUBPATHS and not for the package ROOT, which is the same rule. A manifest
    exporting only `"./feature"` therefore still answered a bare `@repo/pkg`
    with `main` or `src/index` — an edge for an import that does not resolve in
    the real project. Legacy and conventional root candidates are now offered
    only when there is no `exports` field at all.

  - a tsconfig declaring neither `baseUrl` nor `paths` was dropped rather than
    kept as an empty scope, so `tsconfigFor` fell through to an enclosing
    config. A package whose own tsconfig declares no `baseUrl` — meaning its
    non-relative specifiers are package lookups — silently inherited the repo
    root's aliases instead. An empty scope is the accurate answer for such a
    file, and only a scope can express it.

Both are pinned at the level they broke: the manifest arms assert what
`readManifest` produces, not a hand-built package, since the resolver honouring
empty entries and the loader producing them are different claims.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-14 10:13:04 +01:00
Gergő Magyar
77360e1043
fix(scope-resolution): make interface dispatch generic-instantiation aware (#2912) (#2939)
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* fix(scope-resolution): make interface dispatch generic-instantiation aware (#2912)

Interface-dispatch fan-out walked the subtype closure with generic arguments
erased, so `IValidator<string>` and `IValidator<int>` — one declaration, one
subtype list — were indistinguishable and a call through the first reached
`IntValidator.Check(int)`, a target no runtime dispatch can produce.

The arguments were already in the capture, unread: every language anchors
`@reference.inherits` on the whole base node while `@reference.name` keeps the
erased base. `ReferenceSite.typeArguments` is therefore derived generically in
`scope-extractor.ts` from the anchor's own spelling — no per-language query
changed — covering C#, Java, TypeScript, Kotlin, Go (`Base[int]` embedding),
Python (`Base[User]`) and Swift; Rust and Dart anchor on the bare name and get
nothing, which reads as "unknown". `preEmitInheritanceEdges` is the only code
that pairs a heritage site with a resolved (subtype, supertype), so it records
the instantiation there and hands it to the dispatch pass.

The closure is then walked carrying a substitution, as a type checker would:
`Wrapper<T> : IValidator<T>` binds T to the receiver's argument and stays
reachable from every instantiation, while its own subtypes are matched against
that binding. An incompatible hop is skipped without being marked seen, so a
type reachable by a second, compatible path still gets its edge, and without
descending, since its subtypes inherit the mismatch.

Pruning happens only on positive evidence that two instantiations differ.
Unknown arguments on either side, an arity that does not line up, an unresolved
qualified spelling of the same simple name, or an argument that might be a type
variable the language never captured all keep the target. Telling an uncaptured
type VARIABLE from a concrete type is the crux: `typeParameters` is absent both
for a non-generic declaration and for every declaration in a language whose
query omits `@declaration.type-parameters`, so the pass reads the evidence in
front of it — one run resolves one language, so a single generic declaration
anywhere in it proves the captures record parameters. A language recording
neither arguments nor parameters keeps exactly its pre-#2912 fan-out.

Type arguments are compared as resolved declarations rather than spellings, so
`Models.User` and an imported `User` are one type; the new optional
`ScopeResolver.normalizeTypeArgument` hook canonicalizes a language's predefined
aliases, implemented for C# (`string` ≡ `String`) where mixing the spellings
would otherwise delete a real implementor.

Fan-out cap, skipped-target reporting, overload selection and non-generic
closure behaviour are unchanged. SCHEMA_BUMP 60 -> 64: the heritage arguments
are a parse-time capture, so a warm cache would replay pre-fix sites and leave
the filter silently inert on unchanged files (61/62/63 are claimed by open PRs).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01StNKYi7Qxv5DnSURZuFBef

* fix(scope-resolution): close the two generic-dispatch gaps (#2912)

The first commit left two shapes on the pre-#2912 fan-out. Both are now
covered, and the second one turned out to need a route the pipeline did not
have at all.

**Folded receivers (Cases 0 and 3b).** `this._validator.Check(x)` is typed by
the compound fold, and the fold answers with a CLASS — which is exactly what
loses the instantiation, since `IValidator<string>` and `IValidator<int>` fold
to one declaration. The fold now reports the SPELLING it typed each receiver
position from, through a pure side channel (`recordReceiverType`) added to the
one helper every declared-type route already shares plus the two return-type
routes; resolution is unchanged whether or not a caller passes it. The reader
keeps the last report and uses it only when it names the class the fold
returned, so an intermediate position cannot lend its arguments to another
class. This covers the dependency-injection shape the issue is really about —
a field-held generic interface — and multi-hop chains, where it is the last
hop's spelling that types the receiver.

**Rust and Dart heritage.** Neither recorded arguments, for two different
reasons, so both routes exist now:

  - Rust's `@reference.inherits` anchor is the trait identifier INSIDE a
    `generic_type`. Widening the anchor would move the site's range, and that
    range is part of every inheritance edge's id, so the arguments arrive
    through a new `@reference.type-arguments` sub-tag instead.
  - Dart's `implements` / `with` never become reference sites at all: they
    travel as heritage MARKERS and their edges are emitted by the language
    hook. The arguments ride the marker payload as an optional fourth field
    (dropped, not encoded, when the spelling contains the marker delimiter),
    and `ScopeResolver.emitHeritageEdges` now receives the same sink
    `preEmitInheritanceEdges` writes to, so whichever pass emits an edge
    records that edge's instantiation. Dart also gained the
    `@declaration.type-parameters` capture, without which its own type
    VARIABLES are indistinguishable from concrete arguments and
    `class Box<T> implements Validator<T>` would be pruned from every
    instantiation.

Note this makes Rust and Dart record their instantiations; it does not make
them fan out. Interface dispatch still fires only for a receiver whose folded
type is an `Interface` symbol, so a Rust `Trait` or a Dart abstract `Class`
receiver has no secondary targets to filter. Widening that gate emits new
edges for several languages and belongs to its own issue.

**Two matcher rules the wider coverage exposed.** A WILDCARD names a set of
types rather than one — `Repo<? extends User>` holds a `Repo<User>`, and
Kotlin's `Repo<*>` / `Repo<out User>` say the same — so a position with one on
either side is unknown; nullable spellings trip the same test, which costs a
little precision in the safe direction. And insignificant whitespace inside a
nested spelling (`Map<string, User>` vs `Map<string,User>`) is no longer a
difference.

One expectation changed in the #2833 field-receiver matrix: a
`Repo<Repo<User>>` receiver no longer reaches `UserRepo implements Repo<User>`.
That edge is precisely the false positive this issue is about, and the primary
edge to the interface's own declaration — which is what the matrix row exists
to prove — is untouched.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01StNKYi7Qxv5DnSURZuFBef

* refactor(scope-resolution): apply the quality pass to the #2912 change

Three cleanups, no behaviour change.

**One balanced-list scanner, not two.** `erasedTypeApplication` and
`typeApplicationArguments` each carried a copy of the same fiddly scan — one
bracket list, balanced, closing on the last character, non-empty — differing
only in what they did with the result. Both now call `balancedTailList`; the
rule that rejects `User[][]` and `Repo<User>?` lives in one place instead of
being free to drift between two.

**The receiver's arguments are parsed after the gates, not before them.**
`emitInterfaceDispatchFor` takes the receiver's declared SPELLING and parses it
itself, once the owner is known to be an Interface with subtypes. Every one of
the five cases calls it unconditionally and the overwhelming majority of
receivers are concrete classes that return at the first line, so the parse was
running per resolved receiver site to be discarded immediately. Case 4 and Case
6 now hand over the string they already hold, and the folded-receiver helper
returns the recorded spelling rather than parsing it.

**One question gates the whole instantiation apparatus.** Inside the closure
walk, the graph-id lookups now hang off "is the supertype's instantiation
known?" — false for every non-generic receiver and for every language that
captures no heritage arguments, which is what makes those walks cost exactly
what they cost before #2912.

Also lifted the argument-route choice in `pass5CollectReferences` out of a
nested ternary into a named `heritageTypeArguments`, where the reason the
explicit sub-tag wins over the anchor text can be stated once.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01StNKYi7Qxv5DnSURZuFBef

* test(scope-resolution): cover generic interface dispatch in Kotlin and Go (#2912)

Extends the #2912 dispatch coverage past C#/Java/TypeScript. No production
code changes — the derivation is language-agnostic by construction
(`heritageTypeArguments` reads the heritage anchor's own spelling), so the
question was only which languages actually reach the filter.

Kotlin rides the shared heritage pre-pass; Go reaches the same filter from
the other side, matching implementors structurally while the receiver's
`Validator[string]` spelling carries the instantiation. Both are confirmed
to prune the mismatched implementor.

Each language gets a NON-GENERIC control asserting the fan-out still reaches
every implementor. Without it the `not.toContain` assertion passes just as
well when a language emits no dispatch edge at all — which is what Dart,
Python and Rust were measured doing for this receiver shape, generic or not.
They are deliberately not asserted on here: a "filtered correctly" test over
a path that never fans out measures nothing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* test(bench): re-baseline the Rust and Dart capture fingerprints for #2912

The Rust trait-impl and Dart heritage capture changes this branch makes are
additive TEXT on existing matches — each carries the instantiation the clause
was written with — so they drift the scope-capture digest without adding or
removing a match. The baselines were never re-measured when those captures
landed, which left `measure.mjs --check` red on this branch independently of
the merge.

Re-measured rather than hand-edited. Rust's capture_groups_fp (3556) and
fixture_count (202) are unchanged across the move, which is the evidence that
this is digest drift and not a capture-set regression. The other 13 languages
are byte-identical; 15/15 pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* refactor(scope-resolution): quality pass over the #2912 change

Cleanup only — no behavior change. Findings from a four-angle review (reuse,
simplification, efficiency, altitude), applied where they were verified.

Reuse / duplication:
* `stripTrailingCallSuffix` was a second copy of `matchingOpenParen`'s backward
  balanced-paren scan. Both now live in `template-arguments.ts` beside
  `balancedTailList`, for the reason that helper was shared in the first place:
  two copies of a scan this fiddly are free to disagree.
* The two call-return arms of the compound fold repeated the same four-part
  expression character for character; they share `classOfReturnType` now, the
  return-type twin of `classOfDeclaredType`, which keeps the "look up by
  rawName, report the erased application" pairing in one place.
* `pipeline/run.ts` implemented first-writer-wins twice — once in the pre-pass
  and once in the provider sink. One store, one sink, one rule; the pass keeps
  its `Set<string>` return and the callable-flow-only arm stops building an
  empty map to satisfy a widened return shape.

Simplification:
* `subtypeParametersComplete` dropped a disjunct that could never decide: every
  `subDef` reaching it comes out of the same loop that sets
  `languageCapturesTypeParameters`, from exactly those defs.
* The heritage-argument lookup asked "is the supertype's instantiation known?"
  three times; `superGraphId` now gates the block once.
* `TypeArgumentResolver` and `HeritageInstantiationResult` un-exported — no
  consumer outside their module.

Efficiency (all on the per-site dispatch walk):
* `resolveSupertypeArgument` captures only the site, so it is built once per
  site instead of once per subtype visited; the subtype's scope id is looked up
  once per subtype instead of once per argument position.
* `erasedTypeApplication` no longer runs on every fold hop through a call — the
  spelling is built only once the lookup has found a class, since it is
  discarded otherwise.
* `normalize`+`compact` computed once per side rather than twice.
* Regex literals and the identity `normalize` fallback hoisted to module scope.
* C# `System.` prefix stripped with `startsWith`/`slice` instead of a regex.

Verified: tsc clean, build clean, 1994 scope-resolution unit tests, 171
generic-dispatch + generic-field-receiver integration tests, 15/15 capture
bench fingerprints unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* style: apply Prettier to the two files the quality pass reformatted

Whitespace only — `quality / format` (npx prettier --check .) was red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* fix(scope-resolution): close the generic-dispatch review findings (#2912)

Addresses the gitnexus-check review on #2939.

A repeated type variable was rebound rather than unified: `class C<T> :
Pair<T, T>` accepted a `Pair<string, int>` receiver, with `T = int` silently
replacing `T = string` and the bogus substitution carried to the next hop.
It now unifies, and prunes only on the same positive evidence the concrete
path demands — an undecidable repeat keeps the target with no binding.

A type PARAMETER of the declaration enclosing either side is now recognised
and never compared. `subtypeParametersComplete` is evidence about the
SUBTYPE's parameter list and says nothing about a `T` written at the call
site, so `void Run<T>(IValidator<T> v) { v.Check(x); }` pruned every
implementor: unbounded, `T` grounds to nothing; bounded, it grounds to its
BOUND. Both read as a difference of type. That is the missing-edge failure
this filter is built to avoid, and it is the common dependency-injection
shape in C#, Java and Kotlin.

Making that recognition reliable is why generic METHODS now capture
`@declaration.type-parameters` in C#, Java and Kotlin — TypeScript already
did, which is why its generic functions never had the defect. The capture
feeds the existing `bindsTypeParameter` guard, so a method-level `T` also
stops resolving to a same-named class in every other lookup.

C# alias normalization additionally strips the `global::` qualifier, which
`import-decomposer` already unwraps elsewhere: `global::System.String` read
as unequal to `string` and pruned a live implementor.

The C# captures golden fixture is regenerated for the new capture; the
extractor reads `@declaration.type-parameters` generically, so no reader
changed. SCHEMA_BUMP 64 already covers these capture changes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* fix(scope-resolution): close the two remaining gitnexus-check findings (#2912)

`balancedTailList` counted ONE bracket family, so a crossed pair slipped
through: scanning `Foo<Bar]>` it never sees the `]`, reaches the final `>` at
depth zero, and reports `Bar]` as a balanced argument list — which
`typeApplicationArguments` then splits and `erasedTypeApplication` rebuilds a
spelling from. It now tracks a stack of expected closers, so every closer must
match the opener it actually closes and a crossed pair declines to `undefined`,
the "unknown" both callers already fail open on. Well-formed mixed nesting
(`List<Dict[a, b]>`) is unaffected.

C# `normalizeTypeArgument` stripped `System.` from every qualified spelling, so
`System.Custom` answered `Custom` and compared equal to an unrelated `Custom`
elsewhere in the workspace. The strip is now earned: a keyword answers from the
alias table first, and the qualifier is dropped only when what remains IS a
predefined type. `System.Custom` is returned as written and goes to the identity
comparison instead — the step that can actually tell two declarations apart.
`global::System.String` still meets `string`.

Both are pinned by unit tests, including the well-formed mixed nesting and the
`global::`-qualified ordinary type that must keep its qualifier.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* docs(csharp): record why a shadowed `String` keeps its implementor (#2912)

Answers a review finding rather than changing behavior.

A workspace may declare its own type named `String`, shadowing the BCL simple
name, and the alias table then reads `IValidator<String>` as the `string`
instantiation and keeps that implementor. That is the SAFE direction, not an
oversight: pruning instead would rest on the belief that two spellings differ,
which is the missing-edge failure `generic-instantiation.ts` exists to avoid.

Resolving rather than normalizing cannot settle it either — the identity
comparison needs a `definitionId` from both sides, and a built-in name carries
none, so "built-in versus workspace-declared implies different" would be a new
prune with no positive evidence behind it. The cost is one surplus edge for that
pair, which is exactly the pre-#2912 fan-out and no worse.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* refactor(scope-resolution): pair the receiver spelling with the class structurally (#2912)

The fan-out needs the spelling a receiver position was typed from, because the
class the fold returns has lost the generic arguments. That was carried by a
PASS-LEVEL mutable holder, written by every declared-type lookup anywhere in the
fold and read back through a def-id coincidence check, with the holder cleared
by hand before each call site. Three things were load-bearing and none were
enforced:

* the reset had to be remembered at every call site. It was not: the Case 3b
  retry (`rawName` then `rawName + '()'`) reset once, BEFORE the first attempt,
  so a spelling reported by the attempt that failed could be attributed to the
  one that succeeded.
* the holder outlived every resolution, so a site that resolved through a route
  reporting nothing could read the previous site's spelling if the def ids
  happened to line up.
* the pairing itself was inferred from "whichever lookup reported last", not
  from the fold's own bookkeeping — losing branches (an MRO walk that moved on,
  a step later folded past) report too.

`foldReceiverChain` already had the answer and threw it away: its final
`FoldState` holds `def` and `declaredType` produced by the SAME step. It now
reports that pairing last, so the structural route is the one that stands.

`resolveCompoundReceiverTyped` returns `{def, declaredSpelling}` and owns a sink
created and read within the single call, which is what removes the reset
discipline — a local cannot be forgotten, and each of the two retry attempts
carries its own. The def-id guard stays as the check that a report names the
class actually returned.

Behavior is unchanged: 1975 scope-resolution unit tests, 177 generic-dispatch
and generic-field-receiver integration tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 14:50:53 +01:00
azizur100389
3d4a95360d
fix(java): materialize record component accessors (#2936)
* fix(java): materialize record component accessors

* fix(java): ignore receiver params in record accessor arity

* fix(java): address record-accessor review findings (#2917)

Five findings from the tri-review of #2936.

P1 — a synthesized callable evicted a source-written one from the method map.
`getMethodInfo` keyed its per-class map by `name:line`, but a callable that is
SYNTHESIZED at a position that is not its own declaration shares its owner's
line: a record's implicit accessor is minted at the component, and a C# 12
primary constructor at the owner's `parameter_list`. Both are appended last by
their extractor, so on a single line the synthesized entry overwrote the
explicit method's MethodInfo and both definitions collapsed onto one id —
`record P(int x, int y) { int x(int s) {...} }` lost `P.x#1` and rebound the
arity-1 call to the zero-argument accessor. Adds a required `MethodInfo.column`
and keys the map by `name:line:column` through a single `methodInfoKey` helper.
Required, not optional: an absent column would key an entry no lookup could
reach — a silent, whole-language loss of enrichment instead of a compile error.
All three lookup sites move together; the file's own lockstep docblock warns
that a half-applied change loses caller edges silently rather than dangling.
This also fixes the same collision in C#, which never touched record code.

Degenerate component names no longer mint a node. tree-sitter's zero-width
MISSING recovery token satisfies `name: (identifier)`, so `record M(int x, y) {}`
minted an empty-named Method whose returnType was the neighbouring `y`; and the
grammar admits `underscore_pattern` in the same field, which the query rejected
but the scope path accepted, so `record R(int _) {}` left a scope declaration
with no node behind it. One `isRecordComponentName` predicate now gates all
three emitters — query suppression, scope synthesis, and the method extractor —
so they cannot drift apart again.

Component annotations reach the implicit accessor (JLS 8.10.3 / 9.7.4) by
reusing the shared `extractAnnotations` helper. Deliberately over-approximate
and commented as such: `@Target` lives in another file and parsing is per-file.

`explicitZeroArgAccessorNames` is memoised per record node. It was rebuilt on
every component capture — O(components x body members) for one record, measured
at ~4x per 2x input — while the scope path already hoisted the identical call.

Docs: the `java-local-types` baseline now stores the `capture_groups_fp` its own
note cites, the SCHEMA_BUMP ledger no longer claims a v65 that nothing holds,
and `shouldSkipDefinitionCapture` documents that `defaultLabel` may be ignored.

Scope-capture fingerprints are unchanged (`measure.mjs --check` PASS, 15
languages): the bench corpus contains no degenerate components, so the new
predicate is inert on it. SCHEMA_BUMP stays 67 — this branch's existing claim
already covers the changed worker output; re-check it against origin/main before
merging.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

* docs(ingestion): reunite the overload-suffix JSDoc with typeTagForId

The block describing the `~type1,type2` same-arity discriminator was stranded
above `buildCollisionGroups` when that function was inserted between it and the
`typeTagForId` it documents (#658). Adding `methodInfoKey` in this branch parked
it directly above yet another unrelated function, which gitnexus-check flagged.

Moves the comment down to the function it describes. No behaviour change.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Px638Zyqa9CJMUU7DsJoB

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 08:43:11 +00:00
azizur100389
cdc98a9cf8
fix(java): capture enum interface heritage (#2935)
* fix(java): capture enum interface heritage

* fix(java): harden enum heritage dispatch

* test(java): refresh synthetic capture baselines

---------

Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-13 07:04:00 +01:00
Gergő Magyar
2be508e796
fix(mcp): stop scaling the detect_changes query with the diff's hunk count (#2915) (#2930)
* fix(mcp): map diff hunks to symbols without per-hunk OR conditions (#2915)

`detect_changes` folded one `(n.startLine <= $hunkEndI AND n.endLine >=
$hunkStartI)` pair per diff hunk into a single WHERE clause, one query per
changed file. A machine-generated file (cache JSON, lockfile, golden fixture)
diffs at thousands of hunks with `-U0`, and the expression tree that produces
overflows LadybugDB's recursive evaluator copy on a TaskScheduler worker
thread: a bare SIGBUS with no error output where secondary threads get 512 KB
of stack (macOS), a swallowed 30s query timeout where they get more (Linux),
which the CLI then printed as "No changes detected." with exit 0.

Coalesce each file's hunks into sorted, disjoint ranges and run the overlap
test in JS instead. Only ranges that overlap or abut are merged, so the union
covers exactly the lines the raw hunks covered. Query text and parameters are
now identical whether a file changed in 1 place or 100,000, and files are
queried in batches of 100 rather than one full node scan each.

Reproduced on Linux by running the engine with macOS-sized (512 KB) thread
stacks: 2,500 hunks passed, 3,333 and 4,000 segfaulted — matching the reporter's
macOS threshold table. After the change the same repo maps a 100,001-hunk diff
in 2.1s with no crash.

Also fixes a line-base mismatch the rewrite exposed: graph rows are 0-based
(#2377) while git hunk lines are 1-based, so the raw comparison shifted every
symbol one line up. An edit to a symbol's LAST line reported nothing changed —
a one-line function whose body was edited was invisible to the pre-commit gate.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* fix(cli): say when a detect_changes result is partial (#2915)

When a graph query fails, `detect_changes` swallows the error, sets
`partial: true` and leaves the counts at zero (#2283). The CLI formatter never
read that flag, so a degraded run printed "No changes detected." and exited 0 —
the pre-commit safety gate reporting a clean bill of health for a check that
did not complete. Print the partial note in both the empty and non-empty
branches.

Also restore the `Symbol` placeholder for rows whose label came back as an
empty string: the changed-symbol mapping now keeps `''` instead of dropping it
to undefined, so the formatter needs `||`, not `??`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* refactor(mcp): bound the hunk→symbol query and simplify the overlap helpers (#2915)

Cleanup pass over the #2915 fix. No change to which symbols detect_changes
reports, except that a node matched by two changed paths is now reported once.

* Push a per-file [lo, hi] span into the query. Coalesced ranges are sorted and
  disjoint, so a file's whole touched span is free, and the engine can drop the
  symbols outside it instead of shipping every row in the file across the native
  boundary. Measured on a 400-file batch against a 25k-node index: 546ms/13,870
  rows before, 84ms/1,555 rows after, identical kept set. Depth stays constant
  (two comparisons per file, not per hunk), so #2915 cannot come back — the JS
  test still rejects symbols landing in the gaps between hunks. The struct-list
  parameter was verified against @ladybugdb/core 0.18.3 and 0.19.1.
* Convert hunks into the graph's 0-based space once, at the point they are
  grouped, with the existing `toZeroBasedLine`. Every comparison downstream is
  then base-neutral, and `toDisplayLine` goes back to being what its doc says it
  is: an MCP response-boundary converter, not a filter input.
* Deduplicate matched nodes by id. `ENDS WITH` is a plain string suffix, so a
  diff touching both `README.md` and `pkg/README.md` counted the same node
  twice (169 duplicates in 13,870 rows on a real 400-file diff). Pre-existing,
  free to fix now that the rows are shaped in one place.
* Drop the positional `?? sym[N]` row fallbacks in this block.
  `executeParameterized` returns `getAll()` rows, which are alias-keyed objects,
  so the fallbacks were dead — and they coupled the mapping to RETURN column
  order, which is what made adding a column a renumbering exercise.
* Build the path→hunks map in one pass, so "every value is coalesced" holds at
  every point rather than being repaired by a second loop. Simplify
  `coalesceHunks` (the length<2 branch and the sort tiebreaker changed nothing)
  and state `hunksOverlapRange` as a standard half-open lower bound.
* Document `partial` in the detect_changes tool description. The CLI now prints
  it, but the MCP client — the main consumer of the pre-commit gate — was
  getting the flag as an undocumented raw key.
* Tests: pin the query text as identical for a 1-hunk and a 3,000-hunk diff
  (replacing a magic length bound), pin the 0-based bounds parameter, pin the
  dedup, and fold two near-identical row mocks into one helper. Temp dirs now
  come from the shared pool helper, whose cleanup is per-directory and
  Windows-lock aware.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* feat(mcp): bound and batch the hunk→symbol query, and anchor its path match (#2915)

Follow-up review pass on the #2915 fix, implementing every remaining finding.

* Push a per-file `[lo, hi]` span into the query. Coalesced hunks are sorted and
  disjoint, so a file's touched span is free, and the engine drops the symbols
  outside it instead of shipping every row in the file across the native
  boundary. Measured on a 25k-node index, 400-file batch: 546ms/13,870 rows
  before, 84ms/1,555 after, identical kept set. Depth stays constant (two
  comparisons per file, not per hunk), so #2915 cannot return. The struct-list
  parameter was probed against @ladybugdb/core 0.18.3 and 0.19.1 first; the
  index-subscript form `$paths[i]` does not parse.
* Anchor the path match: `n.filePath = b.path OR n.filePath ENDS WITH b.suffix`
  where suffix is the path with a leading separator. A bare `ENDS WITH` is a
  plain string suffix, so a diff touching `lib/a.py` also reported a symbol from
  an indexed `src/mylib/a.py` — a file the diff never touched. This is the form
  `explain` already uses. Pinned by an integration test against a real engine
  (it fails 3/3 with the un-anchored predicate).
* Run batches a few at a time. `executeParameterized` checks a connection out of
  the 8-connection per-repo pool for the duration of a query, so parallel calls
  never share one — the same reason ~15 other queries in this file already run
  under `Promise.all`. `allSettled`, so one failed batch degrades the result to
  `partial` instead of discarding the batches that succeeded beside it.
* Deduplicate matched nodes by id, and count `changed_files` as distinct paths:
  a path can appear twice in one diff (a rename reported alongside an edit).
* Cap the listed symbols at 1,000 with `symbols_truncated: {listed, total}`.
  A repo-wide diff otherwise puts an unbounded array in one MCP payload — the
  CLI has `--limit`, an MCP client has nothing. Counts are never capped, so the
  risk level and the CLI's "... and N more" still see the true total.
* Extract `chunk` / `mapBatches` / `LBUG_QUERY_BATCH_SIZE` into
  `core/lbug/query-batch.ts`. Every query built from a caller-sized array has
  this ceiling; the shape now has one name and the measured batch size is
  recorded where it is defined rather than in three constants under three names.
* Move hunk grouping and the 0-based conversion into `coalesceHunksByPath`, at
  the parse boundary. `parseDiffHunks` stays faithful to git (1-based, like the
  `@@` headers it reads), consumers compare graph-native values, and the
  conversion is unit-testable instead of living in the backend.
* Document `partial` and `symbols_truncated` in the detect_changes tool
  description — the MCP client is the main consumer of the pre-commit gate and
  was getting both as undocumented raw keys.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* refactor(core): batch every remaining repo-sized query list (#2915)

`detect_changes` was not the only place building query text from a
caller-sized array. `core/wiki/graph-queries.ts` interpolated the whole file
list of a module into four `IN [...]` literals, growing the query with the
repo — flat breadth rather than the nested depth that crashed #2915, but the
same unbounded shape, and the one the repo's own `DELETE_FILES_CHUNK_SIZE`
precedent already chunks elsewhere.

All four now run one query per batch and merge in JS. The membership arms need
care, and each is documented where it happens:

* `getIntraModuleCallEdges` batches the caller arm only. A per-batch callee arm
  would drop a call from batch 0 to batch 2, both inside the module, so that
  predicate moves to JS against the whole set. Results are now sorted: the
  single-query form had no ORDER BY, and batch order would hand the entire
  30-edge window `formatCallEdges` keeps to the first 100 files (#2787).
* `getInterModuleCallEdges` keeps the SAME batch list in its `NOT` arm. That is
  sound — a file outside the module is outside every batch — and it preserves
  the null handling: `NOT null IN [...]` is null, so the original dropped edges
  to a node with no filePath, where a JS-only `!has(undefined)` would admit
  them. ORDER BY and LIMIT move to JS because a per-batch limit would cut rows
  before the cross-batch membership filter ran.
* `getProcessesForFiles` keeps `LIMIT` inside the batch: `stepCount DESC, id` is
  a total order, so a process in the global top-N is in its own batch's top-N.

Also adopt the shared `chunk()` at the hand-rolled slice loops in
`lbug-adapter.ts`, `embeddings/http-client.ts` and `run-analyze.ts`. The loops
whose index fed a progress callback or an error message use
`chunk(...).entries()`, which removes the `i / SIZE` and `Math.floor(i / SIZE)`
arithmetic rather than reproducing it. No batch size changed.

One trap that survived tsc and is worth naming: after renaming a loop variable
away from `chunk`, a leftover `chunk.length` silently resolved to the imported
FUNCTION's arity, reporting `chunkSize: 1` for a 200-path batch. Only
`lbug-query-importers-batch`'s exact-value assertion caught it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* refactor: name the line-base conversions and share the symbol line (#2915)

The 0-based-graph vs 1-based-elsewhere rule was open-coded in five places with
the reasoning living only in comments — the same rule that, applied by hand and
skipped once, hid every last-line edit from `detect_changes`.

* Add `toOneBasedLine` beside `toZeroBasedLine` in `ingestion/utils/line-base.ts`
  so the module owns both directions, and adopt it at the four CFG/PDG join
  sites in `pdg-impact.ts` and the two in `local-backend.ts`. This is NOT
  `line-display.ts`'s `toDisplayLine`, which is documented as a response
  boundary converter with an `undefined` passthrough; the joins need
  arithmetic, and the guards that produce `Number.NaN` for an absent line are
  kept verbatim.
* `http-route-extractor.ts` probed graph spans with a bare `line - 1` and a
  20-line comment. It calls `toZeroBasedLine` now; the `?? pick(line)` fallback
  arm is untouched, so which node is picked cannot change (the clamp differs
  only for a negative line, which no emitter can produce).
* Extract `formatSymbolLine`: `detect-changes-format.ts` and `eval-server.ts`
  rendered the same `type name → filePath` line. One behavior note — the two
  were not byte-identical, and eval-server had no placeholder on `name`, so a
  definition with an empty name rendered the literal `undefined` and now
  renders `?`. Both `definitions[]` shapes set name from a graph row, so this
  is unreachable in practice, and printing `undefined` into LLM-facing output
  is the bug, not the intent.

`||` (not `??`) in the placeholders is deliberate and documented: a node label
can come back as an empty string and still needs the placeholder.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* perf(wiki): bind the module file list instead of splicing it into the query (#2915)

The wiki's four `IN [...]` sites interpolated every file of a module into the
query text, so the text grew with the repo — the shape that overflowed
LadybugDB's recursive evaluator copy in `detect_changes`. The previous commit
chunked them, which worked but cost real complexity: the callee arm had to leave
Cypher and be re-implemented in JS, DISTINCT had to be re-established across
batches, and ORDER BY/LIMIT had to move to JS so a per-batch window could not cut
rows the cross-batch filter still needed.

Binding the list as a parameter removes the reason for all of it. The text is
constant at any list length, and measured against a real index a bound list is
~3x faster than the equivalent literal (5,000 items: 139ms vs 459ms; 20,000:
598ms vs 1,686ms). Every predicate goes back into Cypher, including the `NOT ...
IN` arms whose null handling is load-bearing — `NOT null IN [...]` is null, so a
callee with no filePath is dropped by the engine, where a JS membership test
would have admitted it.

Verified on this repo's own index: a 2,000-path bound list returns 14,856 rows in
877ms.

Also collapses the per-process step query into one grouped `p.id IN $ids` fetch —
105ms to 13ms for 20 processes — and drops `fileListLiteral`, `callEdgeKey`,
`compareProcessHeaders` and the batching loops with it. `compareStrings` was a
byte-identical re-roll of `compareCodeUnits` (src/lib/utils.ts), including its
#2787 rationale; it now calls the shared one.

Intra-module edges are sorted where the original had no ORDER BY: `formatCallEdges`
keeps only the first 30, and an unordered cut keeps a different subset per machine.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* refactor(core): one home for batching, and a backstop for the shape that crashed (#2915)

`chunk` moves to `src/lib/utils.ts`, the repo's generic-utility home: it is an
array helper, and leaving it in `core/lbug/query-batch.ts` made an HTTP
embedding client import batching from the graph-DB namespace. `query-batch.ts`
keeps what is actually about queries — the measured `LBUG_QUERY_BATCH_SIZE`, the
concurrency helper, and the ceiling — and now documents the preference the wiki
change proved: bind the list as a parameter first, chunk only when you cannot.

`mapBatches` becomes `mapConcurrent`: nothing about it is batch-specific, and it
now has non-query callers. Its body is a per-item try/catch plus `Promise.all`,
so ordering comes from the primitive rather than from unwrapping a settled
union. The wave barrier stays — measured against a rolling window it is 538ms vs
532ms on a 1,000-file diff, whose per-batch times spread only 1.35x.

Adopted at the loops that were still hand-rolled: `file-hash.ts`,
`cluster-enricher.ts` (its progress callback now accumulates `batch.length`
instead of clamping an index), `filesystem-walker.ts` and `language-config.ts`
(wave scheduling with `allSettled`, which is exactly `mapConcurrent`).
Deliberately not adopted, each for a stated reason: the analyzer-identity probe
runs as a standalone `node -e` script with no module resolution; the embedding
sub-batch loop slices two parallel arrays and breaks early;
`walkRepositoryPaths` reports progress from inside each wave, which
`mapConcurrent` cannot express.

`warnIfQueryTextUnbounded` is the backstop: #2915 died in native code with no
message, and a query built by concatenating a caller-sized list is the shape
that gets there. Wired at both execution chokepoints (`pool-adapter`'s
`executeParameterized`, `lbug-adapter`'s `executePrepared`/`streamQuery`; their
`executeQuery` siblings delegate and are covered once). It never throws — a long
query the engine can actually run must not start failing on a heuristic — and it
is deliberately absent from the raw write path, where a node's `content` is
inlined and a large source file would warn legitimately.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* refactor(mcp): name the path-match rule, and key detect_changes by node id (#2915)

* `path-predicate.ts` names the three ways a caller's path can match a stored
  `filePath` — `exact`, `pathSuffix`, `fragment` — instead of each call site
  copying whichever idiom its neighbour used. A bare `ENDS WITH` is a plain
  string suffix, which is how a diff touching `lib/a.ts` came to report a symbol
  from `src/mylib/a.ts`; the loose `CONTAINS` sites are loose ON PURPOSE (a user
  hint of `src/mcp` should match a directory fragment), and naming the modes is
  what lets a call site choose rather than inherit.
* `detectChanges` kept four structures over one row set — an array, a dedup Set,
  an id list and an id→name Map — that had to stay in sync by hand. One
  id-keyed Map is all of them; insertion order is preserved, so every output is
  byte-identical.
* `symbols_truncated: {listed, total}` becomes `truncated: true`, the key
  `explain`/`pdg_query`/`trace` already use. The true total was always in
  `summary.changed_count`, so the nested object said nothing the existing
  vocabulary could not.
* `GraphLineRange` is now a distinct type from `DiffHunk`: they carry the same
  two fields in different bases, and mixing them IS #2377. The name means a
  1-based hunk cannot reach `hunksOverlapRange` without a conversion between.
* `coalesceHunksByPath` accumulates raw ranges and coalesces once per path
  rather than re-sorting on every occurrence.
* `chunk` adopted at this file's own five loops — the point of extracting it —
  including two locals named `chunk` that shadowed the import. That shadowing is
  not cosmetic: it is how a leftover `chunk.length` silently became the
  function's arity earlier in this branch.

One bug caught by the real-engine integration test and worth naming: Cypher
comments are `//`, not `--`. A `--` comment inside the query string made
LadybugDB reject the whole query at PREPARE, which `detect_changes` swallows
into `partial` and renders as "No changes detected." Every mocked unit test
passed. Prose stays out of query strings.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* refactor(test): share the git-repo bootstrap, and move the shared formatter out (#2915)

`formatSymbolLine` lived in `detect-changes-format.ts` but is rendered by
`eval-server`'s query formatter too, so a `query` formatter imported from a
`detect_changes` module. It moves to `src/cli/format-symbol.ts`; both callers
import it from there. The `||`-not-`??` fallbacks stay documented — a node label
can come back as an empty string and still needs its placeholder.

`test/helpers/temp-git-repo.ts` gives `initGitRepo(dir, identity?)` and
`commitAll(dir, message)` to the ~10 test files that hand-rolled the same
`git init -q` + two `git config` + `add -A` + `commit` sequence. It takes a
directory and never owns one, matching `temp-dir-pool.ts`'s split of lifecycle
from seeding; the identity is a parameter because the existing consumers
genuinely disagree about it, and each keeps exactly what it configured. Four
files stay hand-rolled for stated reasons — pinned author dates for a
deterministic digest, remote handling, `--allow-empty`, and the `-c key=value`
form that never persists to the repo.

Test trims: the `formatSymbolLine` fallback cases collapse into one `it.each`
table (the case pinning that BOTH consumers emit the helper's exact line stays —
no table row can express it); two `line-base` cases that were compositions of
their neighbours go; and `detect-changes-path-anchoring` runs its
`detect_changes` call once in `beforeAll` instead of three times, keeping the
three named failures.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

* perf(mcp): filter the batched hunk query before the engine materialises (#2915)

`UNWIND $bounds AS b MATCH (n) WHERE …b…` compiles to a CROSS_PRODUCT whose
build side is a RESULT_COLLECTOR over the whole filtered node table: only the
`n`-only predicates get pushed below the accumulate, so neither the anchored
path match nor the [lo, hi] span could reduce the scan. Measured at 1M nodes:
+242 MB for one batch and +922 MB for the four concurrent ones, paid even for a
one-file diff — and at a 268 MB buffer pool the query died with `Buffer manager
exception` where the old per-file query completed, landing in `partial:true` +
`changed_count:0`, the #2915 false clean by another route.

Adding the batch-wide, `b`-free disjunction as a redundant leading conjunct
lets the planner push it below the accumulate: EXPLAIN now shows it as FILTER[2]
directly under SCAN_NODE_TABLE[0]. It is a provable superset of the correlated
predicate, so it cannot drop a row the correlated filter keeps. 10x less memory,
~20% faster, identical result sets.

Also in detect_changes:
- Sort rows on (filePath, startLine, id) before the 1000-symbol cut. The cut was
  slicing engine row order — measured 5 distinct orders across 8 runs on one
  connection, the #2787 class this branch fixes 200 lines away in the wiki.
- Chunk `symIds`, the one caller-sized list left unbatched: 500k ids measured
  4.0 GB RSS. Binding keeps the query TEXT constant, which is all the unbounded
  guard measures, while the bound VALUE stayed repo-sized.
- Prefer exact path equality and widen to the anchored suffix only for paths
  that matched nothing, so a root README.md stops reporting pkg/*/README.md.
- Report `risk_level:'unknown'` rather than 'low' when a query was swallowed.
  A degraded pre-commit gate must not read as an all-clear.
- Pass --no-ext-diff --src-prefix=a/ --dst-prefix=b/. `diff.noprefix` in a user's
  gitconfig makes git emit `+++ f.py`, which parseDiffHunks cannot match, so every
  run printed "No changes detected." and exited 0 before any query ran. A diff
  that parses to zero files now raises `partial` instead of the clean branch.
- `labels(n)`, not `labels(n)[0]`: labels() returns a scalar string here, so the
  subscript was always '' and `type` never carried a label.
- Validate IMPACT_MAX_CHUNKS. The chunk() adoption turned an entry condition into
  an exit condition, so a non-numeric value ran every chunk instead of none.
- Record why four-way concurrency is safe here, and scope the arm64 sequential
  comment to the query it was written for (#496).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* fix(cli): fail the detect_changes gate instead of exiting 0 when it degrades (#2915)

The secondary half of #2915 was that a swallowed query failure printed
"No changes detected." and exited 0, so a shell pre-commit gate passed on a
broken analysis. This branch added the PARTIAL text. It did not change the exit
status, so `gitnexus detect-changes && git commit` still proceeded.

`detectChangesCommand` passed a STRING to `output()`, and `output()` sets a
failing code only for an OBJECT carrying `error` — under a comment calling
itself "the one place that keeps scripted callers honest". A string never
matches, so this command opted itself out of the only mechanism the file
provides. It was broader than `partial`: the formatter also renders a backend
`{error}` payload as text, so hard failures exited 0 too.

Fixed narrowly in `detectChangesCommand`, following the object-first shape
`checkCommand` already uses, rather than widening `output()`'s shared contract —
every one of its other seven callers already passes an object and is unaffected.
One code for both `error` and `partial`: `&&` only distinguishes zero from
non-zero, and a softer code for `partial` would invite `|| [ $? -eq 2 ]`
exemptions that reopen exactly this hole.

`truncated` deliberately stays exit 0 — only the listing is capped, while the
counts and risk are computed over the full set, so the verdict is sound and
failing on it would fire on every large-but-healthy diff.

Also wires `truncated` through the formatter, which this branch had left as a
producer-only flag while `partial` went end to end, with the note in both
locales and no count of its own so the existing "... and N more" line stays the
sole numeric report.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* fix(wiki): restore step order and symbol labels, and cut the edge list in Cypher (#2915)

Found by running the queries against a real engine, which nothing did before:
this branch's regrouped `withSteps` returned step traces OUT OF ORDER.
`ORDER BY pid, r.step` combined with `WHERE p.id IN $ids` silently drops the
second sort key — `proc_1_incrementalupdate` came back 2,7,1,3,4,5,6.
`ORDER BY step` alone is correct, and so was the pre-branch per-process query,
so this was introduced by the batching. `formatProcesses` prints
"${s.step}. ${s.name}", so every module and overview page was getting scrambled
execution traces. The mocked suite passed 112/112 before and after.

`labels(x)[0]` is always the empty string: labels() returns a scalar string and
the subscript is 1-based over its characters ([1] is "F"). `prompts.ts` renders
"${s.name} (${s.type})", so all 5,027 exported symbols reached the LLM as
"name ()".

`getIntraModuleCallEdges` shipped every edge to use 30 — measured 18,299 rows
and 851 ms with all 2,079 paths bound, against 30 rows and 94 ms with
ORDER BY + LIMIT in Cypher, which the sibling `getInterModuleCallEdges` twenty
lines below already did. The determinism fix (#2787) was right; the placement
was not. `compareCallEdges` goes with it — it was intransitive when a name was
null or empty, so `Array.sort` was input-permutation dependent, i.e. the
nondeterminism it was added to remove.

Deletes the positional row ABI this branch newly documented. The vendor
declaration is `getAll(): Promise<Record<string, LbugValue>[]>` — string keys
only — and `row[0]` probes back `undefined`; the same PR deleted ~30 identical
fallbacks from local-backend.ts. They were already stale here: `withSteps`
prepends `p.id AS pid`, so `toProcessStep` was reading the pre-branch layout.
Rows are now typed by alias, so renaming an `AS` is a compile error. `??` for
`||` so a step of 0 or an empty label keeps its own value.

Tests: a real-engine integration suite covering all seven exported queries
(PREPARE included — the trap that shipped a `--` comment on this branch), and
the four holes that let the ordering bug through — a vacuous order assertion, a
LIMIT never reached by a 2-edge fixture, a fake that returned rows pre-ordered
and ignored ORDER BY, and a hardcoded `type: 'Function'` that hid labels().

The step-ordering fixture is empirically sized: 2 processes never reproduced the
bug, ~400 step edges was intermittent, 710 (20 processes x 26-45 steps) hit
11 of 11 runs. Seeded descending and interleaved so no grouping looks sorted by
accident.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* refactor: put the shared helpers where their callers are, and make their contracts true (#2915)

`mapConcurrent` moves to lib/utils.ts beside chunk(). Nothing about it is
query-specific and it already had filesystem callers, while its docstring
justified concurrency safety through the per-repo connection pool — an argument
that does not apply to fs.readFile. This is the precondition the branch's own
commit message stated ("it now has non-query callers") and then did not apply.
LBUG_QUERY_BATCH_SIZE and warnIfQueryTextUnbounded genuinely are query-specific
and stay.

`pathMatch`/`PathMatchMode` deleted: zero callers, and none of the three sites
its docstring cited were migrated, so the tree carried the abstraction and the
copies it was written to replace. `pathSuffixOf` stays and the module now
documents the anchoring rule it actually implements.

Contracts that were not true:
- QUERY_TEXT_CEILING_BYTES was compared against `cypher.length` — UTF-16 code
  units, not bytes — so non-ASCII query text was undercounted and the reported
  KB was wrong. Buffer.byteLength now, behind a `length * 3 <= ceiling` early
  return so only text over ~21 KB pays for the count.
- chunk(items, NaN) returned [[]], against a docstring promising never to return
  an empty slice, and mapConcurrent's Math.max(1, NaN) propagated it — which
  would have resolved [] for non-empty input with no error, read as "no results"
  by every call site.
- GraphLineRange claimed a 1-based hunk could not reach hunksOverlapRange
  without a conversion, but it was structurally identical to DiffHunk so tsc
  accepted one with no diagnostic, and coalesceHunks<T extends GraphLineRange>
  actively laundered the base while its accumulator was still DiffHunk[]. The
  useless generic is gone and a one-line phantom on each interface makes the
  claim real; a bare {startLine, endLine} literal still satisfies both, so no
  construction site needs a cast.

Pure deletions no longer vanish. A -U0 deletion emits `+N,0`, which
parseDiffHunks dropped, so the file survived with no hunks, no query ran, and
detect_changes reported `changed_files:1, changed_count:0, risk_level:'low'` —
"No changes detected." for a commit that deleted a function. A unified diff
spells an empty range as the line before it, so the anchor is line N alone:
a symbol containing the deleted text also contains N, while extending to N+1
would claim a symbol that merely starts after the gap — the widening
coalesceHunks guarantees it never does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* docs: say that a partial or truncated detect_changes is not a clean gate (#2915)

The gate itself now fails loudly, but the instructions every agent reads still
described a zero as a result. Fixed at the source: AGENTS.md's gitnexus block is
generated from a template in cli/ai-context.ts and injected into every user's
repo, so the sentence goes there and AGENTS.md/CLAUDE.md are regenerated through
the real code path (which also picks up a pre-existing `analyze --index-only`
drift the committed docs were behind).

That block is under a test-enforced size cap with 30 characters of headroom, so
the 144-character clause was paid for in the same currency: the header
exhortation, which the Always Do list restates as MUSTs with commands, and a
verbatim repeat of the detect-changes command in the regression-compare example.
3549 of 3552. Worth noting for whoever adds the next line — #2899 replaced an
absolute cap with a 0.65 ratio to let "a legitimate clause fit without
ceremony", but set the ratio flush against the block's then-current size, so it
is a ratchet with no ratchet.

The canonical block does not make the skills redundant: three of the four
install channels ship skills without touching AGENTS.md, --skip-agents-md does
the same in-repo, and a user-trimmed gitnexus:keep block legitimately has no
Always Do section — in those repos the skill file is the only carrier. Precedent
agrees: the risk:UNKNOWN rule is deliberately carried in both places. So one
sentence each in gitnexus-work (the commit gate), gitnexus-impact-analysis
(beside the UNKNOWN paragraph) and gitnexus-refactoring, whose post-hoc "verify
only expected files changed" is the worst of the three because a degraded result
makes it vacuously pass. gitnexus-taint-analysis is left alone: its audience is
always inside this repo, where the canonical block loads.

All copies mirrored to npm, plugin and cursor. The cursor copies are condensed
checklists rather than byte-mirrors, so they carry the equivalent note placed
where it governs every detect_changes line in the file — and nothing tests that,
since standard skills are fragment-checked rather than byte-compared.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* refactor: break the seven small import cycles gitnexus check reports (#2915)

`check` reported 11 cycles. Five are paths inside a single 257-file strongly
connected component in core/ingestion (call-extractors / cfg visitors /
utils/ast-helpers), with a second 26-file component behind it — fixing those
paths would only make check print different ones, so both are left for their own
PR. This closes the seven that are genuinely separable, taking the graph from 9
strongly connected components to 2.

Six of the seven were one value import plus one `import type` edge. tsconfig
sets neither verbatimModuleSyntax nor isolatedModules, so those edges erase
entirely — the cut is a graph and readability change with no emitted-JS
difference. Each moved type went to a leaf module, with a re-export left behind
only where an importer outside the change actually needed it:

- cli/ai-context <-> cli/skill-gen: GeneratedSkillInfo -> cli/generated-skill.ts.
  One importer, no package export surface, so a clean move with no re-export.
- cli/analyze-config <-> cli/analyze (+core/run-analyze): AnalyzeOptions ->
  cli/analyze-options.ts. Re-export kept because a test imports it from
  analyze.js. run-analyze needed no edit — cutting the one type edge collapses
  the 3-file component into a DAG. Its own same-named AnalyzeOptions is a
  different interface and was deliberately not merged.
- ingestion/import-resolvers/types <-> ingestion/language-config: type-only in
  BOTH directions, so it had no runtime existence at all. ImportConfigs has no
  importers outside the pair and is the return type of loadImportConfigs, so it
  moved into language-config. Side effect worth having: the shared resolver
  types module no longer names a single language, which is an AGENTS.md rule for
  core/ingestion shared pipeline code.
- ingestion/di-extractors barrel <-> spring: DiResolver and the two match types
  -> di-extractors/types.ts, following the import-resolvers/types.ts precedent.
- scope-resolution/walkers <-> workspace-index: WorkspaceResolutionIndex ->
  workspace-index-types.ts. Re-export is load-bearing — 9 src importers, 4 test
  files, and a dynamic import() at contract/scope-resolver.ts. Moving the value
  isClassLike instead was rejected: ~15 value importers, and it is documented as
  a pair with isShapeLike.
- server/analyze-worker <-> analyze-worker-core: the WorkerMessage protocol ->
  analyze-worker-protocol.ts, a declarations-only leaf.

storage/branch-index <-> storage/repo-manager was the one genuine two-way
runtime cycle: branch-index called getStoragePaths/loadMeta, repo-manager used
branchSlug/BRANCHES_DIR. branch-index's header conceded the cycle and argued it
was ESM-safe because neither side calls across at module-evaluation time — a
guarantee resting on call ordering rather than structure. Folding
resolveBranchPlacement back the other way does not help, because
BranchSummary.stats is typed RepoMeta['stats'], so RepoMeta had to move either
way. Extracted storage/repo-meta.ts, a leaf importing only fs and path, holding
the metadata read primitives; repo-manager re-exports the public names so all
54 RepoMeta and 50 loadMeta importers are untouched. The moved block diffs
byte-identical against HEAD.

Verified beyond typecheck, because the worker entrypoint is the risky part and
nothing in the suite forks it: emitted analyze-worker.js still contains exactly
one runtime import, and forking the real worker over IPC boots it through
entry -> core -> protocol -> terminal-claim.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* refactor: apply the reuse, simplification, efficiency and altitude cleanups (#2915)

The one that mattered: the degradation exit code was fixed at the wrong depth.
`output()` has never inspected `partial` — it tests `error` only — so putting
the check in `detectChangesCommand` left every other tool exiting 0 on a
degraded run. `partial` is cross-tool vocabulary: query (enrichmentDegraded ||
ftsPartial), impact (!traversalComplete, perSymbolEnrichmentCapped) and the
mode:'pdg' envelope all emit it. A truncated impact traversal returns a short
caller set and an under-ranked risk, then exits 0 — so `gitnexus impact … &&
<edit>` proceeds, in the tool AGENTS.md makes a MUST gate before every edit.
The justification also cited checkCommand as precedent, but checkCommand passes
STRINGS too — it was the second command already hand-rolling around this gap,
while output()'s docstring called itself "the one place that keeps scripted
callers honest". output() now takes an optional renderer and fails on error OR
partial; two hand-rolled sites go away and three tools are covered instead of
one. truncated stays exit 0 (only the listing is capped) and checkCommand's
cycleCount policy stays put.

Efficiency, all re-measured on the 25k-node index:
- The process lookup was chunked with LBUG_QUERY_BATCH_SIZE, calibrated for the
  opposite query shape — that constant is for a whole-node-table scan where more
  items amortise the scan, while this is an `id IN $ids` probe where round trips
  dominate. 20k ids: 617ms at 100, 261ms at 1000. New LBUG_ID_PROBE_BATCH_SIZE,
  documented against its sibling so they cannot be re-merged. This also settles
  the older "chunking this query is a regression" measurement — that was chunk=100.
- The sort comparator re-coerced fields ChangedSymbolRow already types, O(n log n)
  redundant conversions (+31-38%). Row shape probed directly: alias-keyed, no
  positional keys, numeric columns are JS numbers.
- exactlyMatchedPaths built two throwaway arrays; one loop instead (40k rows
  11.4ms -> 4.5ms).
- The integration fixture seeded 710 step edges one round trip at a time; one
  UNWIND instead. File wall time 6.91s -> 3.63s. Fixture size unchanged — its
  docstring records the threshold below which the bug stops reproducing, and the
  mutation check still fails 3/3 when ORDER BY step is reverted.

Reuse and simplification:
- CALL_EDGE_LIMIT existed in four places; its own docstring predicted the drift
  it then caused. prompts.ts owns it now — it is a zero-import leaf so the
  direction cannot cycle, and had graph-queries.ts owned it the four suites that
  vi.mock that module would have left slice(0, undefined), silently returning
  every edge in exactly the tests meant to police the cap.
- Six dead positional row fallbacks survived the rewrite in the loop this branch
  re-indented, in the same PR that deleted the identical ABI from graph-queries.ts.
- Two test files independently modelled the same labels() scalar-string quirk.
  Deleted the wiki one — the file's own new header says semantics belong in the
  real-engine test — and kept projectTypeColumn, the only instrument that can see
  the bug for the detect_changes query.
- makeRepo onto the shared git bootstrap (the eleventh copy of the sequence the
  helper was extracted to own), the duplicate diff-args unwrapper merged into
  test/helpers, hand-rolled comparators onto compareCodeUnits, real-timer sleeps
  replaced by wave-released promises with a strengthened per-wave assertion.
- Re-exports trimmed to what is actually imported, a cross-reference this branch
  invalidated by moving mapConcurrent, and a "~20% faster" claim that does not
  survive at real index sizes (1-9%; the 10x memory win does).

Also adds the drift guard the new doc text lacked: fragment coverage for the
partial/truncated paragraph in every skill copy and in the managed AGENTS.md /
CLAUDE.md block. Falsifiability checked — none of those fragments exist at the
merge base.

Not done here, deliberately: 27 live labels(x)[0] projections remain across
impact/context/query/trace and MCP resources, with four load-bearing workarounds
that have begun depending on each other and one that fabricates rather than
degrades. That is a semantic change to five agent-facing tools and wants its own
PR, scoped to delete the workarounds too.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* fix(cli): restore the detect-changes subcommand in the regression example (#2915)

Caught by the gitnexus-check bot on the PR. The regression-review fallback in
the injected mandate rendered as `--scope compare --base-ref "main" --repo .`
with no command, so anyone copying it invokes the runner with an option as its
first argument.

Self-inflicted, and by exactly the mechanism flagged when it landed: the block
is under a test-enforced size cap (#856) that had 30 characters of headroom, so
adding the partial/truncated clause required paying for it, and the 38-character
"repeat" that was dropped turned out to be the subcommand rather than a repeat.

Paid for the restoration out of the clause instead — both parentheticals are
gone, since `partial` and `truncated` are already defined in the tool
description this text points at. Block is back under the cap at 3548/3552.

Notably the cap has now been raised four times (2700 -> 2900 -> 2950, then
0.55 -> 0.65) each with the argument that the new line is load-bearing, and it
has now also caused a user-facing defect. It is not functioning as a budget.
Left at 0.65 here rather than making it five: moving the threshold to fit one's
own text is how it got here. Worth restructuring separately.

The fragment guard added a commit ago caught the rewording immediately, which
is what it is for; its fragments now pin the two policy claims rather than the
prose around them, since that prose is what gets re-trimmed under the cap.

Also verified and NOT changed: the bot's other error, that detect_changes
compares 1-based hunks against 0-based graph lines. `bounds` is built from
`coalesceHunksByPath`, which applies `toZeroBasedLine` to both ends at the
grouping boundary, and both a mocked and a real-engine test pin an edit landing
on a symbol's last line. The bot read `parseDiffHunks` in isolation.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* fix(core): reject a fractional chunk size, and stop the truncation note overclaiming (#2915)

All five from the gitnexus-check bot's pass on the previous push; two were
introduced by the cleanup round that preceded it.

`chunk` guarded with `Number.isFinite`, which admits a fractional size — and
that one does not fail, it DUPLICATES. `slice` truncates its indices while `i`
does not, so size 1.5 yields slice(0, 1.5) = items 0-1 then slice(1.5, 3) =
items 1-2, putting item 1 in two batches; a caller batching a query would send
it twice. A size is a count, so `Number.isInteger`. Unreachable today (every
caller passes a constant) but the guard existed precisely for the unreachable
case, and the NaN half of it was already there.

`mapConcurrent`'s per-item degradation contract had a hole: `onError` is
caller-supplied and was invoked outside a try, so a throwing reporter rejected
`settle`, rejected the whole `Promise.all` wave, and discarded the neighbouring
successes the function exists to preserve. Reporting a failure must not become
one.

The CLI truncation note asserted "the counts and risk level still cover all of
them", which is true only when `truncated` fires alone — with `partial` the
counts are summed from the batches that succeeded. It now varies: a distinct
string when both flags are set, saying the counts are a lower bound. This is the
same claim already corrected in the tool description; the CLI text still had the
old one.

The di-extractors contract docstring claimed the barrel re-exports everything
from it. That stopped being true when the re-export was trimmed to what is
actually imported, one commit earlier.

The real-engine wiki test claimed to prepare "every exported query" and omitted
`getInterModuleEdgesForOverview`, which `generateOverview` calls. Added — it
aggregates in JS over `getInterFileCallEdges` rather than issuing its own
Cypher, so the note says why it is in a prepare test.

Verified and NOT changed: the bot's other error, that detect_changes compares
1-based hunks against 0-based graph lines. `bounds` is built from
`coalesceHunksByPath`, which converts both ends at the grouping boundary
(storage/git.ts), and two tests pin an edit landing on a symbol's last line.
The remaining seven findings are changed-symbol heads-ups with no signature
change; their callers' suites are green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

* fix(mcp): make the IMPACT_MAX_CHUNKS fallback actually fire (#2915)

The validation added earlier this branch used `Number.parseInt`, which takes the
numeric PREFIX: '1.5' parses to 1, satisfies `Number.isInteger`, and silently
caps enrichment after a single 100-item batch — the opposite of the fallback the
comment beside it promised. `Number` instead, so a fractional value is rejected
and falls back to 10.

The emptiness check is load-bearing rather than defensive: `Number('')` is 0 and
0 is a legitimate value here (enrich nothing), so an UNSET variable would
otherwise mean "enrich nothing" rather than "use the default".

Behaviour table, old vs new: '1.5' 1 -> 10 (the bug), and undefined/''/'  '/
'10junk'/'-2'/'all' -> 10, '0' -> 0, '3' -> 3, ' 5 ' -> 5 all unchanged. So the
only case that moves is the reported one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0139ycbqnAorkJGQaZQXUNuv

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-12 14:51:17 +01:00
Gergő Magyar
22d3c2ad74
fix(cli): stop churning the committed agent guides, and nudge --index-only (#2907) (#2927)
AGENTS.md and CLAUDE.md are the agent guides teams commit, and the injected
block carried live symbol/relationship/flow counts. Those counts move with any
code change, so every reindex rewrote a tracked file and produced a spurious
diff that had to be restored by hand before committing real work.

The write is now skipped when the volatile counts are the only delta. Counts are
substituted with placeholders — not deleted — before the comparison, so
--no-stats REMOVING the parenthetical is still a material change that writes
through; only a numbers-only difference is suppressed. Both the verbose path and
the gitnexus:keep path go through the same rule, and a project rename, a template
change, or a base_ref change still rewrites as before. Live counts remain
available from `gitnexus status` and `gitnexus://repo/{name}/context`.

Two smaller churn sources go with it:

- The file was CREATED without a trailing newline while every update path writes
  `.trim() + '\n'`, so the analyze right after committing a freshly created
  AGENTS.md dirtied it purely to append that newline.
- `--no-stats` left the per-cluster `(N symbols)` counts in the skills table,
  which are exactly as volatile as the header parenthetical the flag removes.

The stale-index hook recommended plain `gitnexus analyze` — the variant that
rewrites those tracked docs — so an agent following the nudge verbatim reindexed
with the most invasive flags. `formatAnalyzeCommand` takes `indexOnly` and the
three hook call sites (Claude, plugin copy, Antigravity) pass it; the injected
"Index stale?" line and the MCP context resource's `re_index` hint name the same
`--index-only` form. Full `analyze` stays the documented way to refresh the docs
and skills.

Both resolve-analyze-cmd.cjs copies stay byte-identical.


Claude-Session: https://claude.ai/code/session_019d85r7TrMYjWbTUT3pXccS

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-11 13:30:14 +01:00
Gergő Magyar
135bcae03d
fix(go): resolve out-of-repo package qualifiers, and stop reporting an undecided interface check as a decided negative (#2873) (#2921) 2026-08-11 10:36:59 +01:00
Gergő Magyar
5cfa402346
fix(fts): keep binary payloads out of the description column, confine an unbuildable index to its own table (#2919)
* fix(fts): keep binary payloads out of the indexed description column

Issue #2889 reports embedded binary and serialized data reaching LadybugDB
through `description`. The vector is real, but not for the reason the report
gives, and the detector that was supposed to stop it cannot see it.

Every file enters the pipeline through a lossy `utf-8` decode — the CSV
emitter's own content cache reads with `fs.readFile(path, 'utf-8')`, and so
does the parse worker. An invalid byte sequence therefore never survives as
invalid bytes; it is replaced with U+FFFD. `isBinaryContent` counted control
bytes and DEL only, and charCode 0xFFFD is neither, so a wholly corrupt
payload scored as clean text: on a real repro, a Vue/JS file carrying a class
file constant pool produced the description `用户服务 handles 数据 <7×U+FFFD>MethCw`
and the detector returned false. Counting U+FFFD toward the existing 10%
threshold is what makes the function see the case it exists for. A legitimate
source file carries no replacement characters at all unless it was
mis-decoded, and a handful still score far under the bar.

`formatFtsDescription` then gates on it. `content` has always been gated
inside `extractContent`; `description` never was, so a symbol whose doc
comment is really a slice of an embedded payload had that payload copied
verbatim into an FTS-indexed column. Empty string rather than a sentinel:
unlike `content`, a description has no reader that needs to be told why it
is missing.

This does not address the `Failed calling LOWER: Invalid UTF-8` build error
itself. That error cannot originate in this layer — every value handed to
COPY is encoded from a JS string, which is always well-formed UTF-8. The two
other gaps the issue names are a no-op and dead code respectively; see the
pull request for the evidence.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017oEY2i74d1HLa5FuGVuPiT

* fix(fts): confine an unbuildable index to its own table

One untokenizable row cost far more than its own table's index.
`createSearchFTSIndexes` let the first rejection leave the loop, and by then
`dropFTSIndex` had already run for that table — so the failing table ended
with no index, and every table after it in `FTS_INDEXES` order was never
reached. On a fresh build, or on the incremental path where
`dropSearchFTSIndexes` clears all of them up front, those later tables ended
with no index either. `verifySearchFTSIndexes` never ran to report it,
because the throw skipped it.

That is the mechanism behind the multi-table degradation in #2889: the report
lists Function, Method, Property and Variable as failing together, which is
loop control flow, not four independent bad rows. It also explains why
`--repair-fts` felt useless — repair runs the same loop, so it stopped at the
same table and left everything after it unbuilt, then failed with a list of
missing indexes and no reason attached.

Each index now builds inside its own try/catch and the run continues, so the
damage stops at the table that actually holds the bad row and repair can
recover everything else. Failures are returned rather than thrown so the
caller sees all of them instead of the first: `buildSearchIndexesOrDegrade`
names every failing table with its raw LadybugDB message, and repair appends
those reasons to the missing-index error.

The aggregate failure class is computed per failure, with integrity winning.
Classification checks capability signatures first, so folding the messages
into one string would have let an untokenizable row mask a genuinely broken
write and downgrade an abort into a degrade.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017oEY2i74d1HLa5FuGVuPiT

* refactor(fts): verify before reporting, and fold the derivable state away

Cleanup pass over the two #2889 commits. No behaviour change except the
verification ordering, which was a real placement error.

`buildSearchIndexesOrDegrade` reported build failures and returned BEFORE
`verifySearchFTSIndexes` ran. A partial build is exactly when "the other
tables are fine" needs proving rather than asserting, and a stale
name+content-only index succeeds at build time while leaving description
search broken (#2299). Verification now always runs, and a table that failed
to build is subtracted from the missing list so it is reported once, with its
reason, instead of twice.

`FtsIndexBuildFailure.failureClass` was `classifyFtsBuildError(error)` stored
beside the string it derives from — two fields that had to agree, and a test
about loop isolation that broke if classification rules changed. Classify at
the one place that asks.

`describeFtsIndexBuildFailures` becomes `summarizeFtsIndexBuildFailures` and
owns the whole sentence, including the denominator only this module knows.
Analyze and `--repair-fts` were rendering the same failure two different ways.

`isBinaryContent` drops the `slice` for a bounded loop and folds the U+FFFD
arm into the existing predicate — the two arms had identical bodies over
provably disjoint conditions. Measured on this box: 349ns vs 388ns per 200
character description, and it skips a SlicedString allocation past 1000
characters. Its doc moves onto the exported function whose contract changed.

Tests: three isolation tests collapse into one (same setup, three channels),
the duplicate capability-class test folds into the existing single-rejection
test, the two integration tests become one graph covering both emission
branches, and the CJK unit case goes — an equality check on one code point
cannot be reached by a CJK character, so it could not fail. `afterEach` uses
`resetAllMocks` so every mock's `...Once` queue is drained, not just one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017oEY2i74d1HLa5FuGVuPiT

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 21:16:11 +01:00
Gergő Magyar
18bc51dfd2
perf(import-resolvers): index every scanning resolver, consolidate the memo, gate every registered language (#2911)
* perf(import-resolvers): build buildSuffixIndex's dirMap lazily (#2903)

`buildSuffixIndex` eagerly built three maps. `dirMap` is the array-valued one —
one entry per directory suffix per file, so O(files x depth) in entries and
array churn — and only four call sites ever read it, all via `getFilesInDir`:
`import-resolvers/{php,csharp,jvm}.ts` and `import-resolvers/configs/python.ts`.

Ruby (through workspace-file-index), the TypeScript scope resolver, Vue's
import-target and the include-extractor never ask a directory question, and
built it anyway. Since #2880 these indexes are retained for a whole resolution
pass rather than rebuilt per import, so that waste is now resident memory.

Deferring it to the first `getFilesInDir` call is behaviour-identical — same
key, same descending-suffix order, same per-bucket push order, same
`substring(lastIndexOf('.'))` extension clamp. The builder assigns the MAP on
completion, so a repeated miss cannot rebuild it.

Measured on `buildSuffixIndex` alone, 32k paths, index built and
`getFilesInDir` never called:

  C# layout, 13 segments   79,018,680 -> 66,580,488 B   -15.74%
  Ruby layout, 11 segments 60,752,792 -> 48,656,856 B   -19.91%

and on the whole retained WorkspaceFileIndex the bench measures:

  csharp 32k  73.62 -> 61.76 MiB   ruby 32k  55.26 -> 43.69 MiB

When `getFilesInDir` IS called the footprint is unchanged, so the deferral is
never a loss. No new retention: all five construction sites already hold both
input arrays alive beside the index.

The laziness is pinned structurally rather than by timing. The test's corpus is
a `string[]` whose elements are accessor properties, so an indexed read is
observable and the read count IS the pass count: 14 after construction, still
14 after any number of get/getInsensitive, 28 after the first `getFilesInDir`,
28 after five more. Memoizing the decision instead of the map would read 42.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(php): resolve imports from a per-run index, not a scan per import (#2901)

PHP was the last language whose import resolution scanned the workspace per
import. Both `resolvePhpImportTarget` and `resolvePhpImportTargetInternal`
materialized two full arrays from the Set on every call, then passed
`undefined` as the `index` argument — so `resolvePhpImportInternal` fell
through to `suffixResolve`'s linear `findIndex`, once per extension per path
part. Measured at 20,000 files: 96.40 ms per import.

**Handing it the shared SuffixIndex would have moved IMPORTS edges.** All three
index-fed sites answer a different question than the scan they short-circuit,
each found by differential with a concrete witness:

  1. `getInsensitive` — the scan leg is `allFiles.has(path)`, exact whole-path
     with no case-insensitive counterpart; the shared index answers a ci SUFFIX
     probe.
  2. `getFilesInDir` — the scan is root-anchored `startsWith(nsDir + '/')`;
     `dirMap` is keyed on every directory SUFFIX, so a vendor copy can win.
  3. `suffixResolve` — the scan's `endsWith('/' + S)` matches only a PROPER
     suffix; `buildSuffixIndex` indexes j=0, so a root-level `Foo.php` starts
     resolving `use Foo` where it returned null.
  3b. the scan's `endsWith(p) || lower.endsWith(lower(p))` has a second
     disjunct that subsumes the first, so it is purely first-in-Set-order and
     case-insensitive; `get(S) || getInsensitive(S)` lets a case-exact hit
     anywhere beat an earlier ci hit.

So this is not Ruby's #2880 shape. Both sites take `getWorkspaceFileIndex` for
the memoized arrays and hand the internal resolver a PARITY `SuffixIndex`
memoized on the same Set identity: `getInsensitive` disabled, `get`
implementing the scan's real rule via the shared ci lookup plus one O(files)
whole-path correction map, `getFilesInDir` root-anchored in Set order.

  no composer.json    96.40 -> 0.036 ms/import steady state
  with composer.json 100.19 -> 0.068 ms/import steady state

Also closes PHP's last per-import traversal, in `import-resolvers/php.ts`: its
namespace-directory scan ran whenever `getFilesInDir` came back EMPTY, not
merely when no index was supplied — despite the comment above it claiming
"only when SuffixIndex unavailable". An empty bucket is already the answer, so
the scan could only confirm it, at one full pass per import whose namespace
matches a PSR-4 prefix but whose directory has no direct `.php` child
(measured 11 traversals for 10 imports; now 1). Moving it into the `else` is
safe because the bucket is a SUPERSET of what the scan finds — a root-anchored
direct child `nsDir/<x>.php` has its directory exactly equal to `nsDir`, and a
directory is always one of its own suffixes, so both index shapes contain it.

Nine mutations of the new code are caught, including M1 "pass the raw shared
index" (the naive fix) at 23 arms. The adapter guard reads 600 instead of 1
under a defensive `new Set(allFilePaths)` — the #1918 P1 hazard the unit
differential is structurally blind to.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(java): index import resolution instead of scanning per import (#2908)

Java scanned the whole workspace twice per import: once for the three-tier
direct match, and again INSIDE the progressive prefix-stripping loop — so a
single unresolvable import cost one full pass per stripped segment. No WeakMap,
no index, and it is registered in `SCOPE_RESOLVERS`, so it ran in production.

This is byte-for-byte the C# shape #2878 fixed, so Java now reads the same
machinery: `getWorkspaceFileIndex` for `normToRaw` + the segment-suffix index,
and a Java-owned `PackageDirIndex` WeakMap over `buildPackageDirIndex(_, n =>
n.endsWith('.java'))` read through `firstFileDirectlyInPkgDir`. Structure
mirrors C#'s `narrowContext` / `resolveDirectMatch` /
`resolveByProgressiveStripping`.

  20k files, 256 imports, 7-in-8 unresolvable:  8.05 -> 0.62 ms/import
  steady state once the index is built:         0.0036 ms/import

Tie-breaks preserved, and Java's are NOT identical to C#'s:

  - tier 1 `break`s on the exact match, so an exact whole-path hit wins even
    when a suffix or directory-child hit came earlier in iteration order —
    hence `normToRaw.get` before `index.get`, which conflates them;
  - the stripping loop instead returns at the FIRST hit of `f === tailFile ||
    f.endsWith('/' + tailFile)` and only yields its directory child after the
    scan completes, so the conflated `index.get` is the correct lookup THERE.
    Applying tier 1's exact-wins rule inside the loop is a real behaviour
    change (mutation M6);
  - `.*` wildcard stripping stays ahead of everything;
  - `firstFileDirectlyInPkgDir` reproduces Java's at-root/at-nested predicate
    exactly, including the first-`indexOf` rule — proved algebraically rather
    than assumed: the `atRoot` branch matches iff `dir === pathLike`, which is
    `D.indexOf(P) === 0 === D.length - P.length`, and the `atNested` branch's
    first occurrence in `f` is the first occurrence in `D` shifted by one.

Six mutations are caught; a seventh (swapping the two index builds) is a true
equivalence and is recorded as such. Hand-derivation also corrected four cases
where the legacy code resolves and I had predicted null — including
`java.util.List` reaching a local `util/List.java`, because Java has no
in-repo-namespace gate like C#'s #1881. That is preserved here and filed
separately as #2910; the parity test pins it so the fix is visible.

The adapter guard reads 800 instead of 2 under a defensive
`new Set(allFilePaths)`. Two traversals is correct: the workspace index and the
package-dir index are separate WeakMaps and each iterates the Set once, the
same accounting as C#.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(cobol): index COPY resolution instead of two scans per statement (#2908)

`cobolScopeResolver.resolveImportTarget` ran two full workspace scans per
`COPY`, each calling `path.extname` + `path.basename` + `.toUpperCase()` on
every entry: tier 1 over `.cpy`/`.copybook`, tier 2 over `.cbl`/`.cob`/
`.cobol`. No WeakMap, no index, and registered in `SCOPE_RESOLVERS`.

Two uppercased-basename maps, one per tier, filled in a SINGLE pass over the
Set and memoized on Set identity. Lookup is
`copybooks.get(upper) ?? sources.get(upper) ?? null`.

  20k files, 500 COPY operands:  3879-4082 -> 10.5-11.7 us/import  (~350-369x)
  steady state once built:       0.253 us/import

Tie-breaks preserved:

  - TIER ORDER. A `.cpy` match beats a `.cbl` match even when the source file
    appears EARLIER in Set-iteration order. This is the one a naive
    single-map rewrite silently breaks, so it gets its own fixture.
  - Within a tier, first in Set-iteration order wins (`if (!tier.has(...))`,
    mirroring the scans' first-match return).
  - The key is built with the identical call sequence,
    `basename(fp, extname(fp).toLowerCase()).toUpperCase()`, so `Foo.CPY` still
    keys under `FOO.CPY` rather than `FOO`.
  - `path` stays in the loop rather than hand-rolled `/`-slicing, so backslash
    handling is unchanged on every platform — pinned by a `dir\sub\BOOK.cpy`
    case.

All six mutations are caught: collapsing the tiers, within-tier last-wins,
dropping the target uppercase, dropping the extension lowercase, hand-rolled
slicing, and the adapter's defensive copy. The first five are caught by the
differential and are invisible to the adapter guard; the sixth is the reverse,
which is the layering working as intended — the guard reads 600 instead of 1.

`COBOL_SOURCE_EXTENSIONS` was being re-allocated on every call; hoisted to
module scope beside `COPYBOOK_EXTENSIONS`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(csharp): index the csproj leg's namespace-directory scan (#2902)

#2878 moved C#'s no-csproj leg onto memoized indexes; the csproj leg kept a
per-import full scan in `resolveCSharpImportInternal` step 3, measured at
~1.10 ms per import at 50,000 `.cs` files.

**The fix the issue proposed would have moved edges.** It suggested skipping
the fallback when an exhaustive index is available, on the assumption that
step 2's `getFilesInDir` answers the same question. It does not: step 2's
`dirMap` is keyed on segment-aligned directory suffixes, while step 3's
`normalized.indexOf(dirPrefix + '/')` is an UNANCHORED substring match, so
step 3 finds a strict superset — and it runs only when step 2 came back empty,
so those extra hits are observable, not shadowed:

  dirPrefix 'ubModels'  step 2 []  step 3 ['src/SubModels/Widget.cs']
  dirPrefix 'rc/Models' step 2 []  step 3 src/Models/* AND vendor/mysrc/Models/*

So the predicate is kept byte-for-byte and made fast instead. It depends only
on the file's directory (the needle ends with `/`, so every occurrence lies
wholly inside `D + '/'`), which reduces to the `package-dir-index` formula
minus the anchoring leading slash. `PackageDirIndex` itself cannot be reused
for the same reason — its matcher is anchored.

The index is memoized on the `normalizedFileList` array identity and built
lazily at the point step 3 is first reached, so BCL usings — which `continue`
out at the root-namespace gate — never pay for it. Candidates come from an
exact last-segment bucket when `dirPrefix` contains a slash, a last-segment
key sweep when it does not, and `singleSegmentDirs` when it is empty.
Positions rather than paths, merged and sorted when several directories match,
so file-list order survives.

  App.Missing @ {App, src}  1103.0 -> 7.6 us   (145x, and flat in file count:
                                                7.3 @10k, 7.6 @50k, 8.4 @200k)
  App.Missing @ {App, ''}    626.7 -> 108.5 us
  App @ {App, ''}           1077.9 -> 2.0 us   (539x)
  App.Ns8 @ {App, src}         0.6 -> 0.6 us   (step-2 hit, untouched)

`relative === ''` is preserved exactly, including the no-`projectDir` case
where the needle is a bare `/` and the answer is "every `.cs` whose directory
has no slash of its own" — `getFilesInDir('', '.cs')` cannot answer that over
repo-relative paths, so it has its own arm.

13 of 14 mutations are caught, including M1, the naive skip-when-indexed
cleanup, at 9 arms. The survivor drops the empty-prefix fast path and is a
true equivalence. M9 initially survived and exposed a real corpus gap — no
non-`.cs` file lived inside a directory — now covered.

The remaining non-constant term is the slash-free sweep, O(distinct last
segments): 456 us at 200k files on a unique-name layout, but 7.9 us on a
`SrcN/Models` layout, which is how C# repos are actually laid out. Closing the
unique-name case needs a character-suffix map over segments — the
O(files x depth) memory shape `package-dir-index.ts` cites #2649 to avoid — so
it is documented in the code as a design change rather than tuned here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* test(scope-resolution): assert index reuse for every registered language (#2909)

Index reuse was asserted by nine hand-written per-language files, so the
guarantee existed exactly for the languages someone remembered — and #2908 is
the proof that is not good enough: Java and COBOL were registered, quadratic
and unguarded until this branch. `resolveImportTarget` is a required member of
`ScopeResolver` with one signature and 16 registrations, so "calling it N times
against a stable `allFilePaths` must not traverse the set N times" is a
property of the CONTRACT.

`import-target-index-reuse.contract.test.ts` drives every entry of
`SCOPE_RESOLVERS`, modelled on `construction-syntax-wiring.test.ts` — the
established shape here for a property plus a justified inventory. Measured
counts, all memoized:

  c 1  cobol 1  cpp 1  csharp 2  dart 1  go 1  java 2  javascript 2
  kotlin 1  php 1  python 1  ruby 1  rust 0  swift 1  typescript 2  vue 2

**`KNOWN_UNINDEXED` is empty.** The audit that produced it also cleared C, C++,
Rust, Swift, TypeScript, Vue and JavaScript by hand — Rust's memo lives in
`qualified-call.ts::moduleIndexFor`, C's and Swift's loops are inside their
WeakMap builders. The empty map stays as a mechanism: a 17th language cannot
opt out silently, and the inventory arm fails when a registered resolver has no
fixture.

Two things the assertion had to get right:
  - it is `scans(200) === scans(2)`, not `scans === 1`. Per-language counts
    legitimately differ (C# and Java build two indexes), and comparing two
    counts needs no per-language expected value.
  - Rust legitimately scans ZERO times — it answers every leg with
    `allFilePaths.has(candidate)` probes — so the floor is a per-language
    `minimumScans`, 1 for fifteen languages and 0 for Rust with the reason on
    the interface. Paired with a `hitTarget` that must resolve non-null, so the
    property cannot pass vacuously on a resolver that stopped answering.
Miss targets are distinct per import, which defeats the TS/JS/Vue per-target
`resolveCache`.

Also unifies the instrument. Kotlin and Python counted index BUILDS from
production; the other seven count traversals of a `CountingSet`. The build
counter is strictly weaker — a scan added BESIDE a reused index moves no build
count, which is exactly the mutation `baselines.json` `_blind_spot` records as
invisible to every timing arm — and it costs two production modules that ship
in the bundle purely for tests, holding module-global state every test must
`reset()`. Both guards migrate to `CountingSet`, and
`languages/{kotlin,python}/index-stats.ts` plus both call sites are gone, for
-59 lines of shipped source.

(Mechanical note: the two `index-stats.ts` file deletions appear in the #2901
commit rather than this one. They were staged with `git rm` while a concurrent
commit swept the index. The final tree is correct; only that attribution is
off, and rewriting a sibling commit to move them was not worth the risk.)

Coverage went up in the swap: Kotlin's old "rebuilds when the file set is a
different object" arm (3 sets, 3 builds) would have PASSED under a defensive
adapter copy. Its replacement fails, as do all six arms across the two files.

Verified by mutation: `new Set(allFilePaths)` inserted into the kotlin, python
and go adapters fails exactly those three and no others —
`python: 200 imports cost 201 traversals, 2 cost 3`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* test(import-target): gate the four newly-indexed resolvers, retighten heap

The bench covered go/csharp/dart/ruby/kotlin. The four resolvers indexed on
this branch shipped unmeasured, and #2903's memory win was not locked in.

**php, java and cobol join the shared corpus**, each with the two load-bearing
properties the header requires: imports scale with file count, and most imports
MISS so the full cascade runs (resolve rates php 36.0%, java 34.4%,
cobol 36.0%). Java's miss families were measured rather than assumed, since it
has no in-repo-namespace gate (#2910): `java.*` 1041 imports and
`com.google.*` 1006, both resolving 0. COBOL's collide layout repeats a
bookname across BOTH extension tiers, so it reaches the copybook-over-source
tie-break rather than only the basename map.

**`csharp_csproj` is a sixth LANGS entry**, not a new arm dimension — an entry
needs five small additions and inherits all five arms and all seven gates,
where a context axis would have to be threaded through `buildRepo`,
`resolveAll`, `identityPass`, the report shape and every gate. `buildFiles`
aliases it to `csharp`, so the two share one corpus by construction and cannot
drift. Two configs (`{App, 'src'}`, `{Lib, ''}`) produce all three `dirPrefix`
shapes — slashed, slash-free and empty — in five arms instead of ten:

  App.Ns{d}      30.6%  src/Ns{d}        step 2 hit
  App.Missing{n} 25.5%  src/Missing{n}   step 3, last-segment bucket
  Lib            14.0%  (empty)          step 3, singleSegmentDirs
  Lib.Missing{n} 12.0%  Missing{n}       step 3, KEY SWEEP — the one
                                         non-constant path
  BCL / Ghost    12.4%  —                root-namespace-gate control

**2221 of 3200 imports reach the indexed leg**, only 12.4% `continue` out. What
that arm pins is stated plainly rather than overclaimed: step 3 answers null
for all 2221 here (the hits land at step 2), so it gates that leg's COST and
its null answers; its positive tie-breaks stay pinned by the unit parity test.

**Heap ceilings retightened.** #2903 dropped the measured figures, leaving the
1.5x ceilings at ~1.9x — a straight revert to the old size would have passed:

  csharp 116,000,000 -> 98,000,000 B   (measured 61.76 MiB)
  ruby    87,000,000 -> 69,000,000 B   (measured 43.69 MiB)
  php    new 106,000,000 B             (measured 67.29 MiB)
  java   new 154,000,000 B             (measured 97.32 MiB, the largest in the
                                        file — Maven layout is 18 segments)

php and java are gated because both retained NOTHING across imports at BASE and
now retain the O(files x depth) suffix index — the same argument that gates C#.
cobol is not: two `Map<basename, path>`, O(files) with no depth term, and its
retained delta does not clear measurement noise, so a ceiling would gate
nothing. `csharp_csproj` is not: same corpus, same index, a duplicate number —
its one distinguishing footprint, the lazily-built `dirMap` its `getFilesInDir`
forces back, is measured at +20.8% and recorded as a residual instead, because
gating it would licence eager-dirMap everywhere.

csharp's `depth_ratio` also fell 3.318 -> 2.31 (the no-csproj leg never asks a
directory question, so the deep arm stopped paying an eager dirMap build).
Budget 5 -> 3.5, restoring the file's 1.5x convention — and `_arms_note` says
plainly that 3.5 does NOT lock that win in, because locking it needs ~2.9,
which is 1.25x over a 1.05x spread and the kind of tightening `_triage` warns
buys flake rather than signal.

All five pre-existing languages are byte-identical: 25 cells x 5 fields = 125
values, 0 mismatches. The new arms were proven live by a doctored baseline
(cobol ceiling 0.01, php heap 1000 B, java resolved 999) producing three
correctly-worded failures and exit 1.

Wall-clock 10.9 -> 26.1 s, php and csharp_csproj ~11 s of it — both cascades
end in `suffixResolve`'s ~50-extension probe, and both gate the two largest
wins on this branch, so neither is a candidate to drop.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(javascript): build the suffix index JS resolution never had

JavaScript's `PassCache` was TypeScript's minus one field: `index`. So JS
called the shared `resolveTsTarget` with `ctx.index === undefined`, and
`import-resolvers/standard.ts` fell through to `suffixResolve`'s linear
`findIndex` — scanning the materialized path list once per extension (~39)
per path part, per import.

  2000 files   6448.9 -> 28.5 us/import   (TypeScript: 25.0)
  8000 files  25972.6 -> 27.4 us/import   (TypeScript: 27.0)

Per-import scaling over 4x the files: 4.12x -> 1.09x.

**Every instrument on this branch was blind to it.** `CountingSet` counts
traversals of the Set; this walked the array the adapter had already
materialized — the blind spot `counting-file-set.ts` documents in its own
header and `baselines.json` records under `_blind_spot`. Under mutation M1,
which drops `index` and reproduces the shipped defect exactly, the sixteen-
language contract test stays GREEN for javascript, because the pass cache is
still reused and `files.scans` reads 2 either way. Two new arms do catch it: a
`suffixResolve` linear-branch counter that runs the legacy adapter first as its
control (135 entries legacy, 0 now), and a mock-free behavioural assertion that
a repo-root module resolves by bare specifier.

Adding an index moves output, exactly as it did for PHP in #2901, so it was
characterized rather than assumed — 211,200 pairs (400 corpora x 3 importers x
176 targets) plus 184 hand cases. **Two classes move and there is no third:**

  A  null -> repo-root file (108)   `require('config')` with root `config.js`.
     The scan tests `endsWith('/' + suffix)`, so a path with no slash has no
     proper suffix and was unreachable through that leg — while `./config`
     from the root already resolved via the exact `Set.has` branch. JS was
     internally inconsistent.
  B  file -> different file (5679)  `import 'app/main'` was resolving to
     `node_modules/dep0/lib/main.js`; the scan skipped the whole-path candidate
     at the 2-segment suffix and fell through to the 1-segment `/main.js`,
     taking the first such file in Set order.
  C  hit -> null                     ZERO, and impossible: proper-suffix keys
     are a subset of the index's keys.

Both moved classes are JS being wrong. **JS-new agrees with TypeScript on all
211,200 pairs and every corpus case, 0 disagreements** — which is the intended
design, since JS delegates to the TS resolver and differed only by this field.

Also swaps the single-slot `let cached: PassCache | null` in JS, TS and Vue for
a module-level `WeakMap`, matching every other language. Two alternating file
sets rebuilt everything on every call: 12.0 -> 1438.2 ms at 4000 files x 400
imports (120x); after, 11.0 -> 15.7 ms. This is LATENT, not live —
`pipeline/run.ts:673` builds one Set per provider pass and the three are
separate providers — but it is why these were the only languages that could not
carry the standard distinct-set guard. They can now: the arm fails on HEAD for
all three (`expected 42 to be 2`) and passes after.

Six mutations caught, including a global `resolveCache` (M5), which needed a
new arm — `expectDistinctFileSetsGetOwnIndex` builds two IDENTICAL corpora, so
a stale answer carried between them is also the right answer.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* refactor(ingestion): one per-file-set memo primitive, twenty-one call sites

Every language that indexes its import resolution hand-rolled the same memo:
declare a module-level `WeakMap` keyed on the file-set object, `get`,
`if undefined` build and `set`, return. One concept, written twenty-one times,
and this branch had just added five more.

`import-resolvers/per-file-set.ts` exports it once:

    perFileSet<K extends object, T extends object>(build: (key: K) => T): (key: K) => T

Two decisions, both recorded in the file. `T extends object` rather than
`has`-then-`get`: `WeakMap.get` returning `undefined` cannot distinguish "not
built" from "built as undefined", and the `has` form needs a cast or a non-null
assertion, both banned here — the constraint makes the ambiguous case
unrepresentable instead, and a future caller wanting `string | null` gets a
compile error pointing at the decision. A throwing build stores nothing and
runs again next call, so failures are not memoized and a half-filled index is
never published — inert for these pure builders, and the safer direction.

`K extends object` rather than `ReadonlySet<string>` is what lets C#'s
`readonly string[]`-keyed cache share the helper.

Twenty-one sites migrated across `import-resolvers/` and fifteen languages.
Every existing doc comment was re-homed onto the new call rather than deleted —
several record real invariants (the Set-identity contract, the #1918
pass-through rule, why Rust's memo lives on a different hook).

TypeScript, JavaScript and Vue additionally had byte-identical `PassCache`
interfaces and builders. `import-resolvers/pass-cache.ts` now holds the one
builder, taking a single argument — every difference the three have lives in
the CONSUMER (`tsconfigPaths`, the extension list), not the builder. The
builder is shared, the memo deliberately is not: each adapter keeps its own
`perFileSet`, hence its own index and its own `resolveCache`, because the three
disagree about what a specifier resolves to and one shared cache would hand a
language another language's answers. It buys no runtime reuse and the module
says so — each provider pass builds its own `allFilePaths` Set, so the three
are always different keys.

C and C++'s `augmentedFilePaths` was a two-LEVEL memo, and needed no new
abstraction: the outer memo's value is a function and a function is an object,
so `perFileSet(perFileSet(...))` composes. The two instances stay one per file,
and the reason is now in BOTH doc comments rather than only C++'s — cpp
delegates to `resolveCImportTarget`, whose `suffixIndex` is keyed on the
augmented set, so a shared memo would cross the two languages' indexes.

Two sites are deliberately NOT migrated, each with the reason written at the
declaration so the next sweep does not re-litigate them:
  - `configs/swift.ts` is a two-input memo keyed on one. `targets` is not
    derivable from the key; re-keying on `ctx` would force a banned non-null
    assertion or an unreachable fallback inside a memo builder.
  - `rust/qualified-call.ts` `MODULE_SCOPE_CACHE` is three inputs keyed on one,
    and sits ten lines below a `perFileSet` in the same file — the likeliest
    thing to be "fixed" by mistake.

The other ten remaining `WeakMap`s are different concerns and stay: AST-node
caches, worker-pool runtime state, graph metadata, mutable lazily-filled
accumulators, and the C++ ADL / inline-namespace indexes, which are reassigned
by explicit clear functions and epoch-stamped on read — validity rules beyond
key identity that a closure over a private cache cannot express.

Net −20 lines of code, +22 of the two "why not" notes. The primitive's own doc
is where the cost sits: the Set-identity contract and the two design decisions
are written once instead of being twenty-one implicit facts.

Pure refactor: 1764 unit tests, 42 guard tests, all sixteen contract-test
traversal counts unchanged (c 1, cobol 1, cpp 1, csharp 2, dart 1, go 1,
java 2, javascript 2, kotlin 1, php 1, python 1, ruby 1, rust 0, swift 1,
typescript 2, vue 2), 647 C/C++ tests, and every bench fingerprint unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* test(import-target): gate every registered language, not nine of sixteen

The bench pinned output fingerprints and scaling for 9 of the 16 languages in
`SCOPE_RESOLVERS`. The other seven — c, cpp, javascript, python, rust, swift,
typescript, vue — resolve imports in production with nothing pinning their
output or their cost. JavaScript was the sharpest case: the 25,972 us/import
defect fixed earlier on this branch was gated by unit tests alone.

All 16 are now gated, plus the `csharp_csproj` variant: 17 entries.

**The nine existing languages are byte-identical** — 234 committed values
(9 x 5 arms x 5 fields, plus 9 top-level fingerprints), 0 changed, and no
pre-existing budget touched. Measured both before and after the memo
consolidation in e6f15274e, so it doubles as an independent check that the
refactor preserved behaviour.

Corpora keep both load-bearing rules — most imports MISS, and import count
scales with file count — at resolve rates of 26-36%. C and C++ follow the
`csharp_csproj` precedent: a `LANGS` entry carrying its own context (header
paths through `resolutionConfig`) over an aliased corpus, since cpp delegates
into C's `resolveCImportTarget`. Vue threads `tsconfigPaths` so its alias
branch actually runs; ts/js use bare specifiers only, because relative ones
never reach `suffixResolve`.

Two corrections to my own profiling, both verified rather than assumed:
Swift's `byModule` IS depth-scaled (one bucket entry per interior segment, not
O(files)), and Python's index is depth-free while its RESOLVER is quadratic in
depth — `hasRepoCandidate` and `resolveAbsoluteFromFiles` each rebuild one
ancestor prefix per importer directory component, per import. That is why
python's `depth_budget` is 11 against a 3.5 next-highest; the arm is pinning a
real defect rather than a comfortable number, and it is filed separately.

Rust's collide arm was redesigned rather than budgeted away: it is flat on file
count by construction, so a shared-leaf arm would have asserted nothing. Its
collide corpus varies `::` segment count — the axis its cost actually has — and
the linear 1.8 budget asserts the file-count flatness.

Heap: all 8 measured, 3 gated. javascript (44.07 MiB, retained nothing before
its fix), python (7.27 MiB), c (9.55 MiB). Five skipped with their numbers in
`_arms_note` rather than silently: rust 16 B (no index on this hook), swift
reads 3x SMALLER on a 4x corpus so it is below its own noise floor, typescript
288 B on 46 MB, vue +5.4%, cpp 0.04% from c.

Every gate type was proven able to fail: one run with 10 doctored values fired
10 correctly-worded failures across all 8 new languages, covering per-scale
fingerprint, shape/resolved, shape/distinct_outcomes on a non-small arm, depth,
collide scaling, absolute small ms, absolute collide ms, top-level fingerprint
and heap bytes. That proof found two wrong messages, now fixed: the heap
failure claimed a `buildSuffixIndex` cause that is false for python and c, and
the fingerprint failure pointed at a parity harness covering none of the eight.

Wall clock 26 -> 46 s. The ts/js/vue family is 14.6 s of the 18.8 s added,
because `suffixResolve` probes ~39 extensions per path part on a miss — the
real resolver, not something the bench can tune. Per language the bench got
cheaper (2.7 s vs 3.0 s). If it must shrink, `_arms_note` and the CI comment
record the one cut that removes duplicate work rather than coverage — drop
collide for typescript and vue only, -3.9 s, since all three share
`resolveTsTarget` and javascript keeps the arm covering their common axis.
Explicitly NOT `REPS`: it is 15 because `depth_ratio` flaked 1-in-20 at 5, and
lowering it would re-open that for all 17 languages.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(import-resolvers): stop building half of every suffix index

Applies the findings of a four-lane quality review over this branch.

**Half of `buildSuffixIndex` was dead weight for most of its consumers.**
Commit b6ee577e0 on this branch made the THIRD map (`dirMap`) lazy for exactly
this reason and left the two larger ones eager. Tracing every reader: Java and
no-csproj C# call `get` and never `getInsensitive`; PHP calls `getInsensitive`
and never `get`. Measured dead weight at 32k paths: Java 49.98 MiB of a 100.82
MiB index, PHP 34.49 of 69.85.

All three maps are now built on first use, and `lowerMap` is DERIVED from
`exactMap`'s insertion order rather than re-traversed — measured 330 ms against
389 ms today, so it is cheaper even for the two-map consumers. `pass-cache.ts`
hands the builder an already-lowercased list, so for TypeScript, JavaScript and
Vue the derivation is the identity and `getInsensitive` aliases the one map.

  java            80.26 -> 25.61 MiB retained   (-68%)
  csharp no-csproj 57.15 -> 21.52               (-62%)
  javascript       44.07 -> 22.65               (-49%)
  php              60.86 -> 32.09               (-47%)
  build @32k      562.1 -> 119.6 ms  (get-only), 329.5 ms (both)

The derivation is proven, not asserted: keys, values AND insertion order
byte-equal over 968,418 entries across case-colliding, Unicode-adversarial and
pathological corpora, plus 400 seeded-fuzz rounds. Order matters because it is
what makes `getInsensitive` return the first match in file order.

PHP additionally defers `filesByRawDirectory` (statically unreachable unless a
composer.json parses) and `firstProperSuffixMatch` (0 entries and 35.6 ms on
the bench corpus) to the branches that read them.

One suggested micro-optimisation was REJECTED with a counterexample rather than
taken: hoisting `suffixResolve`'s lowercase out of the extension loop assumes
`(s + ext).toLowerCase() === s.toLowerCase() + ext`, which is false for a
segment ending in Greek capital sigma — `("ΑΣ" + ".ts").toLowerCase()` is
`"ασ.ts"`, not `"ας.ts"`, because Final_Sigma is context-sensitive and `.` is
case-ignorable. A file named `ΑΣ.ts` would have stopped resolving. 16
mismatches in 2,171,190 checks, for 8.7%.

**The heap arms had become ceilings over nothing.** `retainedIndexBytes` read
only `index.all.length`, so once the maps went lazy it built none of them and
reported ~0 B — passing every ceiling. All heap arms now route through
`retainedPassBytes`, resolving a real missing import through the real resolver,
so the maps measured are the maps production forces. Two further measurement
defects surfaced while fixing it: PHP reaches the index through a second memo,
so the ephemeron chain needs four GC cycles and was reporting 249,208 B for a
9.3 MB index; and `bytes_large` carried an ~11% rope-flattening bias that made
every ratio read 0.85-0.96 for structures that are linear (now 0.998-1.017).

A `heap_floor_fraction` arm was added — a ceiling can only say "not too big" —
and proven by simulating the exact regression: `16 B at 32000 files < floor
17325000 B — this arm has almost certainly stopped MEASURING`.
`csharp_csproj` is now gated too: its old exclusion as "a duplicate of csharp"
held at +20.8% and is false at 2.47x.

**Three silent-coverage holes in the bench.** `LANGS` was a hand-written
literal claiming to mirror `SCOPE_RESOLVERS` while never importing it — the
seam that let JavaScript ship ungated; it is now derived, with an inventory arm
reconciling both directions. Four per-language budget lookups compared against
a possibly-`undefined` value, so deleting a key deleted the gate. Five
dispatchers ended in bare fallthroughs meaning "ruby" and "csharp", so a
mistyped language would have been benchmarked as Ruby's corpus under C#'s
resolver, forever green.

REPS is now chosen per language (15 below 5 ms, else `clamp(ceil(150/ms),7,15)`)
rather than globally by the noisiest cell: timing phase 39.8 -> 28.7 s, with the
six reduced-N languages showing peak-to-peak 1.008-1.071, no worse than the
eleven that kept 15. Worst headroom across all 85 cells is 0.71 of budget.

`depth_budget` for csharp 3.5 -> 2.2 and java 3.4 -> 2.2: their ratios fell to
1.438/1.402 because the lazy maps stop the deep arm paying for a map it never
reads. The file's own note said 3.5 did not lock that win in; 2.2 does.

Also fixes a raw NUL byte that made `suffix-index-lazy-dir-map.test.ts` BINARY
to git — all 395 lines were invisible to diff, blame and grep. The repo
documents this exact hazard in `route-extractors/dispatch-guard.ts`. That file
now also carries the guard the refactor lacked: eight arms pinning one-map-per
consumer and zero-extra-pass derivation, each proven against four mutations,
including a fused-eager rebuild that moves no total and is caught solely by the
at-construction count.

All 17 bench fingerprints and all 85 per-scale tuples unchanged. 1772 unit
tests, 12 adapter guards, tsc clean.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

* perf(python): memoize the importer's ancestor chain per directory (#2913)

Python's file index was always depth-free; the resolver was not.
`hasRepoCandidate` and `resolveAbsoluteFromFiles` each rebuilt one ancestor
prefix per directory component of the importer on EVERY import, and the
index's own `dirPrefixes` build inserted one entry per component per file.
So an import from `a/b/c/d/e/f/mod.py` did ~6x the prefix work of one from
`a/mod.py` regardless of corpus size — `depth_ratio` 7.239 where the next
worst language sat at 3.446.

The prefixes are a pure function of the importer's DIRECTORY, so they are
memoized per directory inside `getPythonFileIndex` (`ancestorsByDir`), which
is itself already per-file-set. Three smaller cuts came out of profiling the
same delta: the leading segment is rejected up front against a set of nested
directory names, the module and package buckets are consulted before the
walk instead of inside it, and the `dirPrefixes` build stops at the first
ancestor already stored.

Measured over 6 serial runs: depth_ratio 1.748-1.872 against 7.239, and at a
fixed 400 files the per-import cost at 18 directory components drops 6.761 ->
1.065 us. All five python fingerprints are byte-identical, so this is a
hoist; the budget retightening lands in the following commit, because
`_arms_note` is a single JSON line that also carries the heap-gate rewrite.

Also memoizes `pythonFileExportsName`'s `parsedFiles.find`, which was
O(files) for every import whose package probe resolved — the same shape
#2901 removed, keyed on `parsedFiles` rather than on `allFilePaths`.

The new gate is a count, not a timing: `ancestorsByDir.size` after N imports
from D directories must equal D, paired with a reference-identity assertion
so a memo that rebuilds AND re-stores still fails. `CountingSet` cannot see
this defect — the chain derives from the `fromFile` string and a rebuilt
prefix traverses the file set zero extra times.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NtGZN6YSNU8chALSnKYHBp

* fix(import-target): close the eleven findings from the #2911 review

Seven P2s and four P3s. Every one is a gate that could not fail or a
comment that had become false; no shipped behaviour defect was found, and
all 85 per-language fingerprints are unchanged.

GATES THAT COULD NOT FAIL

- The C# namespace-dir memo was keyed on a materialized array, so a
  one-character `[...normalized]` copy at the adapter boundary minted a
  fresh WeakMap key per import while traversing the file set zero extra
  times: 67 tests stayed green and only a timing ratio caught it.
  `resolveCSharpImportInternal` now takes the Set and derives both arrays
  from `getWorkspaceFileIndex`, so there is ONE key shape and ONE
  instrument. Copying the Set now turns three arms red. Established first
  that `configs/csharp.ts` is test-only (`buildImportTargetWorkspace` has
  no production caller) and that both derivations are byte-identical —
  otherwise the rekey would have been a behaviour change, not a hoist.

- The contract test called `resolveImportTarget` with four arguments where
  `pipeline/run.ts:682` passes five, so everything behind `context` was
  ungated for all 16 languages: defeating PHP's `filesByDirectory` memo
  cost 197.0 -> 9,976.2 us/import (50.6x) with 248/248 tests green.
  `CountingSet` provably cannot see it — the builder iterates the
  `parsedFiles` array and touches the Set zero times — so the new gate
  counts own-index reads on `parsedFiles` through a Proxy. Only PHP and
  Python have a context leg; the other fourteen carry the floor anyway.

- Three heap budgets were read with no presence check. `ceiling * undefined`
  is NaN and `bytes < NaN` is false, so deleting `heap_floor_fraction`
  disabled the floor for all eight arms; deleting `heap_ratio_budget` did
  the same; and iterating the baseline's keys dropped a language whose
  ceiling key was deleted out of the gate entirely. All three now fail
  closed with a message naming the broken comparison.

- `HEAP_PROBE_TARGET` decided what each heap arm measured and was compared
  to nothing: repointing csharp_csproj at a non-matching namespace dropped
  it 73.70 -> 59.92 MB with `--check` still exiting 0. The four corpus
  fields are now asserted through the loop the timing scales already use,
  and the floor derives from a recorded reading rather than from a ceiling
  that is itself 1.5x the measurement.

- About 35 of the 86 PHP parity arms were structurally unable to fail:
  both sides called the same production helper, so deleting the `..` guard
  left them green. Every hand case now pins an absolute literal as well as
  the differential. Eight of those literals pin a bug or a documented
  limitation and say so rather than blessing the value.

- The registry inventory arm was weighed and KEPT, against the review's
  suggestion, on a structural number rather than a timing: the benchmarks
  job runs 9m23s against a 12m58s critical path, so its seconds buy no
  merge latency, and moving the arm to vitest would put the registry load
  ON that path while weakening what it reconciles. The "7.3 s" and
  "~46 -> ~42 s" figures it was justified with are corrected, including
  stating that only report mode got faster.

- python's `depth_budget` drops 11 -> 2.6 now that #2913 is in. 1.39x the
  measured maximum rather than the file's usual 1.5x, deliberately: at 2.8
  a revert of the nested-name rejection (2.734) would pass. The two parts
  of that fix this arm cannot gate are named, with the count-based arms
  that do gate them.

COMMENTS THAT HAD BECOME FALSE

- `pass-cache.ts` said it deduplicated "three byte-identical copies".
  JavaScript's had five fields and never called `buildSuffixIndex` — that
  missing field IS this PR's headline defect.
- The per-language census said nine where it is twelve, three of them
  added by this PR. Replaced in seven places with the mechanism that
  enforces it, which cannot go stale.
- `getFilesInDir` handed out the index's live bucket. Now `readonly
  string[]`, so mutation is a compile error; `.slice()` was rejected
  because `configs/python.ts` reads only `.length` and a per-import copy
  would reintroduce the term this PR removes.
- #2910 is the Java in-repo-namespace gap, not the JavaScript index defect.
  13 references corrected, the one correct Java use left in place.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NtGZN6YSNU8chALSnKYHBp

* perf(python,bench): flatten the bare-import walk, measure the context leg

Two follow-ups the #2911 review surfaced but left open.

BARE IMPORTS (`import os`) still walked every ancestor of the importer.
#2913 fixed the dotted tier; this tier lives in `import-resolvers/python.ts`
and no bench arm can reach it, because every python arm here spells its
imports with a dot and returns at the `pathLike.includes('/')` guard.

It also ran TWICE per `from x import y`: `resolvePythonImportTarget` probed
the package with `targetIncludesImportedName: true`, and on null — the
expensive case, having already walked to the workspace root — fell through
to a byte-identical call. Established that the two cannot differ before
collapsing them: the flag's only effect is to skip
`pythonImportedSubmoduleTarget`, so the recursion re-runs the outer frame's
entire tail on the same three references, and reaching the fallthrough means
that tail already returned null.

The walk itself is now a memoized chain plus an O(1) proof of absence
against the index's basename buckets. Its chain is NOT the one #2913
memoized and the difference is semantic, not accidental — no
`filter(Boolean)`, self excluded, workspace root included — so under an
absolute-path workspace the unfiltered chain probes `/abs/a/` where a
filtered one would probe `abs/a/`, a prefix of nothing. Two negative arms
pin that in both directions. The shared index moved to
`import-resolvers/python-file-index.ts` rather than being reached across a
cycle, which also collapsed a standalone memo into the one per-file-set.

12 / 24 / 72 Set probes at depth 1 / 4 / 16 become a flat 2. At 18 path
components, 11.615 -> 0.740 us/import (15.7x) and the depth curve is gone:
7.843 -> 0.925. Gated by probe COUNT, not timing.

THE BENCH CALLED `resolveImportTarget` WITH THREE ARGUMENTS where
`pipeline/run.ts:682` passes five, so no timing arm entered the `context`
leg for any language. Arity checked against the registry rather than the
comment: php and python declare five, every other hook three or four.
`parsedFiles` is built first and `allFilePaths` derived from it, matching
`run.ts`; fresh per pass, because the memos behind that leg key on the
array identity and `fastest()` takes a min.

Python's `parsedFiles` was structurally unreadable, not merely unread: the
arm passed a `namespace` spelling, which makes `pythonImportedSubmoduleTarget`
return null before the context is consulted. The import KIND had to change
too.

No fingerprint moved anywhere — on this corpus PHP's leg returns the same
file the cascade already did — which is exactly why the new `context` arm
asserts with-context against without-context instead. Defeating PHP's
`filesByDirectory` memo now costs 1003.7 ms against a 148 ms budget; before
this the bench could not see it at all.

Re-recorded on a quiet box, maxima over 5 serial runs: php small 27.762 ->
34.023 and heap 37.6 -> 49.6 MB (`filesByDirectory` is now retained for the
pass), python small 1.76 -> 4.358. `depth_budget.python` moves 2.6 -> 2.2,
because the added work is depth-FLAT: absolute cost doubled while the ratio
FELL to 1.563, so the old budget had gone slack. Both lock-in figures were
re-measured under the new call shape rather than carried over — reverting
the ancestor memo scores 2.524, reverting the nested-name rejection 2.553,
so each fails at 2.2 with 13% to spare.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NtGZN6YSNU8chALSnKYHBp

* refactor(import-target): make the key-shape rule a type, drop three censuses

Cleanup pass over the #2911 review-fix commits. No behaviour change: all 85
per-language fingerprints, every `resolved` and every `distinct_outcomes` are
byte-identical, and the targeted suite is 1851/1851.

MEASURED — `byBasename` was 71% empty array slots

`byBasename` holds roughly one bucket per file, and building each with `[]`
followed by `push` makes V8 grow the backing store to its 16-slot minimum, so
every single-file bucket retained 15 empty pointer slots. Constructing the
one-element bucket directly is byte-identical in contents and 5.50 -> 1.60 MiB
at 32000 `.py` paths. The bench arm reads 10543848 -> 6360936 B (-39.7%);
`heap_reading_bytes.python` and its ceiling are re-recorded. The same edit
shares one `{ raw, norm }` between both maps instead of allocating a second
literal for every `__init__.py`.

THE RULE THAT COST A TIMING RATIO TO FIND IS NOW A COMPILE ERROR

`perFileSet`'s key is narrowed from `object` to
`ReadonlySet<string> | readonly ParsedFile[]`. Reintroducing the #2911 defect
shape — a memo keyed on an array materialized from the file set — now fails
with TS2345 instead of silently minting a fresh `WeakMap` key per import while
traversing the Set zero extra times, which every scan-counting guard reads as
green at its correct value.

That also retires the header's hand-maintained roster of `ParsedFile[]`-keyed
call sites, which listed three — this PR added a fourth in `395c707d4` and did
not update it. A census inside a comment warning that censuses go stale, stale
inside one commit. The header now names shapes; the compiler names sites.

Two more claims that had drifted from their code:

- `per-file-set.ts` asserted "No index derived from the file set is keyed on an
  ARRAY materialized from it". `configs/swift.ts` is, deliberately, with its
  reasons written down. Two files in one directory disagreeing is worse than
  either; the rule now states what the type rejects and names the exception.
- `SuffixIndex.getFilesInDir`'s doc explained that it returns the index's own
  bucket by reference. True of `buildSuffixIndex`; the other implementation of
  that interface, in `languages/php/import-target.ts`, returns a filtered copy.
  The interface now carries only the caller-facing contract (`readonly`, do not
  mutate) and the sharing rationale moved onto the implementation it describes.
- The contract test still described Python as having "NO memo on this key".
  `parsedFileByPath` landed in `395c707d4`; the floor of 1 is now its single
  build rather than a per-import scan.

DEDUP

`importerDirOf` replaces four copies of `replace / lastIndexOf / slice` — two in
production, where one was a memo KEY and the other a memo's query argument, so
the two per-directory memos in one index agreed only by inspection. The tests
keep their own verbatim derivation on purpose: importing production's would
make the key lookup agree by construction and hide a regression.

`buildParsedFiles` maps through `probeFile` instead of repeating its 7-field
literal 900 lines away; `requireNumericBudget` and `expectNoOrphanKeys` replace
three and three copies, with every per-arm `why` kept per-arm. The two Python
memo guards collapse onto shared arms in `test/helpers/counting-file-set.ts` —
1847 tests before and after, and both still go red under mutation.

SKIPPED, with reasons: dropping `normSet` for bucket scans (trades O(1) probes
on the hot path for ~1.6 MB against a 6.4 MB reading); measuring heap for all
17 languages (+9 s and a design decision, not a cleanup); `readonly` on the
five sibling resolvers' array parameters and the `getDirMap` slice/join rewrite
(both correct, both outside this diff).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NtGZN6YSNU8chALSnKYHBp

* perf(import-target): rewrite the dirMap build, gate heap for every language

The three items the /simplify pass deferred, plus what measuring them found.

`getDirMap` BUILD — 226.9 ms -> 173.1 ms at 32 000 paths

It built every key with `dirParts.slice(j).join('/')`: one parts array, one
slice array and one joined string per file per directory component, in the map
its own doc calls "by far the most expensive" of the three. Now a
`lastIndexOf` walk slicing substrings out of the original string — the same
rewrite `getExactMap` already records at 357.4 -> 264.5 ms.

The key set is identical, not merely equivalent: 272 956 keys over a 32 000
path corpus carrying absolute paths, leading/interior/trailing doubled
separators, Windows separators, extensionless files, dotfiles, dotted
directories and colons, run both slash-normalized and raw. Zero differences in
keys, in key INSERTION ORDER, in bucket contents, in bucket ORDER, or across
767 732 probes through the real index. Bucket order matters because `php.ts`
reads `[0]`.

READONLY on the per-pass shared arrays

`WorkspaceFileIndex.normalized`/`.all` and the `normalizedFileList`/
`allFileList` parameters of jvm, php, ruby, go and standard are now
`readonly string[]`. This PR already made that argument for one bucket
accessor; these are the two biggest arrays held for a whole pass, and the
blast radius of an in-place sort is larger. Types only — no cast, no copy —
and it let two pre-existing `as string[]` casts in
`languages/typescript/import-target.ts` be deleted rather than added to.

HEAP IS NOW MEASURED FOR ALL SEVENTEEN LANGUAGES, AND THE PROSE WAS WRONG

Nine were excluded on measurements taken once and never re-checked, with the
re-entry condition stated in a comment and watched by nothing. Measuring them:

- go, dart and kotlin had NO stated reason at all — the header said "six of
  seventeen" against a list of eight. kotlin retains 45.85 MiB, the
  second-largest reading in this file, larger than ruby's and java's;
- swift and cobol were recorded as below-noise (0.29 MB, 0 B). They read
  3.29 MB and 2.21 MB and grow the right way. The arm changed under them —
  #2903's real-import probe, then corpus flattening — and nobody re-took it;
- the header quoted javascript at two different values four paragraphs apart.

Only rust's exclusion survived: 16 B at both scales, identical over five runs.

Six of the nine are now FULLY budgeted rather than merely bounded — ceiling,
floor and ratio — because each grows linearly (0.996-1.004 against a 1.25
budget). cobol, swift and rust keep an upper bound and no floor, deliberately:
a floor over a reading at or below its own noise gates the noise. Proven live:
restating kotlin's reading so its floor clears the real measurement fails with
"this arm has almost certainly stopped MEASURING rather than started saving" —
the failure that once left four arms at 0 B under passing ceilings.

Cost: +1.37 s in the heap phase, measured per language rather than asserted.

`normSet` was NOT removed, and the reason is now in the code. It is derivable
from the two buckets, but `byBasename` is keyed on BASENAME: on a 9 000-file
service tree `utils.py` and `models.py` hold 1 000 entries each, so `import
utils` would scan every `utils.py` in the workspace per import — the exact
defect class #2901/#2902/#2908 removed. ~1.6 MB against a 6.4 MB reading buys
both probes staying O(1).

All 85 per-language fingerprints unchanged; 1854 tests pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NtGZN6YSNU8chALSnKYHBp

* test(php): drop the impossible undefined comparison from the parity copy

CodeQL (js/comparison-between-incompatible-types, alert 945) flags the
`ctx === undefined` arm of the legacy adapter copy: `WorkspaceIndex` is an
object type at that position, so the comparison can never be true.

Optional chaining expresses the same guard without the type-level clash —
an undefined index still fails the `typeof` test and returns null — so the
copy remains behaviourally verbatim against the shipped adapter, which is
the only property this harness relies on.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017oEY2i74d1HLa5FuGVuPiT

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 17:22:51 +01:00
azizur100389
4576adfc46
fix(java): emit Record interface heritage (#2916)
* fix(java): emit Record interface heritage

Synthesize inheritance references for Java record implements clauses so scope resolution emits canonical heritage and interface-dispatch edges.

* test(java): cover Record heritage review gaps

Document deferred enum and implicit-accessor behavior, make assertions order-independent, and add Record heritage to the capture benchmark.
2026-08-10 13:35:16 +01:00
azizur100389
49c5b7d81f
fix(scope-resolution): fan out C# Record interface calls (#2904)
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* fix(scope-resolution): fan out C# Record interface calls

Use the shared class-like predicate so canonical C# Record implementors participate in interface dispatch, and pin the missing call edge with a regression test.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(scope-resolution): preserve partial Record dispatch

Keep every scope definition that shares a graph node so interface fan-out is independent of partial declaration order, and strengthen C# dispatch controls.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-09 18:39:47 +01:00
DuduPhudu
fa31a7d824
fix: close the nine follow-up review findings from #2856 (routes, receiver typing, truncation honesty) (#2899)
* fix(typescript): a type parameter shadows a declared type of the same name (W2-8)

First item of wave 2, promised to the reviewer on #2856.

`export function unwrap<Result>(value: Result): Result` names the PARAMETER, not
the `interface Result` beside it — tsc resolves both annotations to the
parameter. The type-reference capture that makes a contract answerable ("what
breaks if I remove this field?") had no notion of a parameter binding, so every
annotation mentioning `Result` inside `unwrap` minted a `USES` edge into the
interface, at the same confidence as a real consumer and indistinguishable from
one. Measured on the new fixture: `unwrap` produced TWO false edges while the
genuine consumer produced one.

Blast radius is every generic whose parameter name collides with a declared
type, and the colliding names are ordinary choices for both: `Result`, `Key`,
`Value`, `Item`, `Node`, `Options`, `Config`, `Props`, `State`, `Response`.

TWO HALVES, and the first is why upstream's fix could not reach this. #2833
introduced `bindsTypeParameter` for the CALL-receiver path, where a workspace
`class T` was answering for `<T>`. Reusing it here changed nothing at first, and
the reason is its own documented contract: `@declaration.type-parameters` was
captured for class/interface declarations ONLY, so a generic FUNCTION recorded
no parameter list and the predicate correctly returned false — absence is not
evidence. The data was missing, not the logic. So:

  - TYPESCRIPT_SCOPE_QUERY now captures type parameters on `function_declaration`,
    `generator_function_declaration` and `type_alias_declaration`;
  - the graph bridge consults `bindsTypeParameter` before emitting `USES`.

Both are load-bearing — removing either one fails the fixture.

The fixture carries two controls, because the obvious wrong fix is to stop
emitting: a genuine consumer of the interface must still link, and a generic
whose parameter does NOT collide must still link its real reference. Both are
asserted, and the "genuine consumer" case is asserted FIRST so the absences
below it cannot pass vacuously.

SCHEMA_BUMP 53 -> 54: parse-time capture change. A warm cache replays defs with
no parameter list, so the guard reads nothing and the feature is inert while
looking implemented.

Capture fingerprint re-baselined with justification. NO NEW CAPTURE NAME —
diffing the capture-name sets against the wave-1 branch returns empty; the tag
existed and now fires on more declarations. capture_groups_fp 2338 -> 2371,
fixture_count 151 -> 152, scaling 1.06 < 1.5, and JavaScript's fingerprint does
not move at all, which is the check that this is the TS declaration rules rather
than something broader.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(analyze): close the four false-success paths in the graph-write-collapse guard (W2-6)

Second wave-2 item, promised on #2856. All four were reported; all four
reproduced by reading the code they name.

(a) A SAME-COMMIT RE-RUN REPORTED SUCCESS FOREVER. Every other meta-driven
    trigger — schema fingerprint, PDG mode, runner identity, CJK segmentation,
    embedding dims — has a block that forces a rebuild before the
    `alreadyUpToDate` fast path. `graphWriteCollapsed` had none; `grep -rn` found
    writes and no reads. So the one state meaning "most of your edges are gone"
    was the one state that repaired itself only if the user happened to pass
    `--force`. Now forces a full rebuild, and forcing is right rather than merely
    re-running: the persisted graph disagrees with what the pipeline produced, so
    an incremental pass over unchanged files would write nothing and re-stamp the
    same broken index as fresh.

(b) AN INCREMENTAL RE-RUN ERASED THE STAMP. `saveMeta` is a full atomic
    overwrite, and the field was spread in only when the CURRENT run had a
    verdict. `undefined` meant two different things at that site — "full run, no
    collapse" (a positive all-clear) and "incremental write, not comparable" (no
    opinion) — so the second case silently dropped `graph-write-collapsed` from
    meta.json while the edges were still missing. Now three-way: stamp on
    detection, CLEAR on a healthy full run, CARRY FORWARD when there is no
    verdict. That is the shape `branch: branchLabel ?? existingMeta?.branch` two
    lines away had all along.

(c) THE SERVER PATH NEVER CONSUMED IT. `analyze-worker-ipc.ts` projects the field
    "so a server-side caller sees the same degraded outcome the CLI does" — but
    nothing read it, so the comment described an intention and every collapsed
    run reported `complete` to the UI and to every API consumer. Now reports
    `failed` with the counts and the remedy, matching the CLI, which prints
    `Repository indexed INCOMPLETELY` and exits non-zero. A consumer that reads
    "complete" will query the index and get confident wrong answers.

(d) --pdg ROWS MASKED TOTAL STRUCTURAL LOSS. `expected` counts the in-memory
    graph plus the streamed STRUCTURAL manifest; the streamed PDG layers never
    enter `graph.relationshipCount`. But `persisted` was `stats.edges`, a count
    of EVERY `CodeRelation` row, and PDG writes into that same table. With 1,000
    structural edges expected and 4,000 PDG rows persisted, losing every
    structural edge still read `persisted = 4000`, cleared the ratio, and stayed
    silent — on exactly the large repos `--pdg` is used for.

    Worth recording that the OBVIOUS fix does not work. Padding `expected` with
    the PDG rows makes the two universes match but leaves the ratio judging a
    minority population: 4,000 of 5,000 still clears 0.5. I wrote that first, and
    the test I wrote to prove it failed. Only comparing structural against
    structural asks the question the check exists to ask, so `getLbugStats` gains
    a `structuralEdges` count excluding `PDG_EDGE_TYPES`. `TAINT_PATH` is
    deliberately NOT in that set — it is a whole-program Function→Function edge
    persisted by the normal emit, so it is structural and stays counted on both
    sides.

    `index-freshness-graph-collapse.test.ts` had pinned the masking as correct
    (`detectGraphWriteCollapse(1000, 4000)` → undefined, "PDG layers write into
    the same table, so persisted > expected is normal"). True about the table,
    and it licensed the hole. Replaced with the case that matters and a note on
    why the fix is at the caller.

The new `structuralEdges` assertion in `lbug-core-adapter` is there because the
failure mode is silent: the query sits in a try/catch that yields `undefined`,
and `undefined` makes the collapse check decline to compare — so a typo in the
Cypher would throw nothing, fail nothing, and switch the guard off. Verified
against a real LadybugDB and mutation-checked by breaking the query.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(processes): make process selection insertion-order invariant (W2-5)

Third wave-2 item. Reproduced before fixing: two equal three-step flows with
`maxProcesses: 1` select `handleAlpha`; inserting the identical nodes and CALLS
edges in reverse select `handleBeta`. Same repository, same commit, a different
persisted graph — so a filesystem that enumerates differently, or an incremental
run that reorders assembly, silently changes what the tool reports.

Four sorts ranked by score or length alone and returned 0 on a tie.
`Array.prototype.sort` is stable, so a 0 preserves INPUT order, which traces
back to `graph.iterNodes()`. Under `maxProcesses` capping that decided which
`Process` and `STEP_IN_PROCESS` nodes were persisted at all. Each now falls
through to a totally-ordered, content-derived key — node id for entry points,
the joined path for traces.

WHAT IS ACTUALLY VERIFIED, stated precisely because "four fixes" would overclaim:

  - the ENTRY-POINT sort is individually mutation-verified;
  - the two DEDUP sorts are collectively mutation-verified;
  - the TRACE-RANK tiebreak is NOT individually observable, and the source says
    so. The dedup sorts already impose a total order on the list that reaches
    it, so removing it alone fails nothing. Kept as defence in depth: it cannot
    misbehave — it only makes an already-deterministic order explicit — and it
    is what stops a change to dedup ordering from silently re-opening this.

Finding that out took two fixtures. The first (three chains, three entry points)
is separated by the entry-point sort before trace ranking is reached, so it never
exercises the trace comparator at all; the second gives ONE entry point two
equal-length branches to different terminals, which is the only shape where the
trace comparator decides. Both are kept — they gate different sites.

The invariance tests assert the INVARIANT rather than any single sort, so they
cover all four sites and any future one without needing to know where they are.
Three assertions: same selection under a cap, identical set uncapped, and
identical ORDER — the last because order is what the cap consumes, so a set-only
assertion would pass while the defect persisted.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(impact): UNKNOWN dominates a mixed candidate set, instead of reporting the known floor (W2-4)

Fourth wave-2 item. The all-UNKNOWN branch here was reasoned about carefully and
is correct — its comment even names the two ways a set can be all-UNKNOWN. The
MIXED case fell straight through it.

`RISK_ORDER` is `['LOW','MEDIUM','HIGH','CRITICAL']` and has no `UNKNOWN` entry,
so `indexOf('UNKNOWN')` is -1 and an UNKNOWN candidate can never win the reduce.
An ambiguous name with one caller-less candidate (UNKNOWN, per the round-1 fix)
beside one single-caller candidate (LOW) reported `maxRisk: 'LOW'` — a confident
floor over a set containing an interpretation nobody measured. That is the same
false-safe the all-UNKNOWN branch exists to prevent, one case over, and it
surfaced in the UI as "Max blast radius N (LOW risk)".

`maxRisk` answers "how bad could this be?", and an unresolved candidate could be
CRITICAL — so any UNKNOWN in the set makes the aggregate UNKNOWN. Narrowing it
that way would normally cost information, so the measured part travels alongside
as `knownMaxRisk`, present only when the two differ: absent on a fully-resolved
set, where it would duplicate `maxRisk`, and absent on a fully-unknown one, where
there is no measured part. A reader gets "at least LOW among what resolved, and
one interpretation could not be walked at all", which is strictly more than
either value alone. The human-readable message says the same thing.

The seed gained a mixed pair because the existing one could not reach this: both
its twins are caller-less, so it only ever exercises the all-UNKNOWN branch —
which is precisely why the gap survived a round of review. Three assertions,
both halves mutation-verified.

`eval-server.ts` needs no change: it renders `result.maxRisk ?? 'UNKNOWN'`, so it
now shows UNKNOWN where it previously showed the floor.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(routes): track ternary polarity in dispatch guards, so a selected verb cannot be inverted (W2-9)

`if ((req.method === 'GET' ? false : true) && pathname === '/api/i')` emitted
`GET /api/i` — the one method that branch guarantees the request does NOT have.
A ternary SELECTS between its arms, so a verb inside one is not reached merely
because the whole condition is truthy, but `findVerbInSubtree` descended into
both arms and returned the first verb it saw. Same inversion `!` produced before
d4dcba8c, one level up.

Handled by folding the ternary where an arm is a boolean literal, which is what
collapses the selection into a conjunction:

    c ? A : false  ==  c && A     both hold, so search both
    c ? false : B  ==  !c && B    c must NOT hold, so search it at flipped parity
    c ? true : B   ==  c || B     a disjunction guarantees neither operand
    c ? A : true   ==  !c || A    likewise

Two non-literal arms leave the verb chosen by an unknown condition, so the
ternary guarantees nothing. Refusing every ternary would also have fixed the
reported bug, but three of the four shapes measured were ALREADY correct and
would have silently lost their verb; they are pinned now.

A second defect in the same walk, found while reproducing: the `!` rule was
keyed on PRESENCE, returning null at the first negation it saw, while
`isNegatedContext` two functions above states the rule is PARITY and says so
outright — `!!x` is `x`. So `!!(req.method === 'GET')` dropped a verb the source
states plainly. The existing double-negation test covered the PATH position,
where the parity walk already ran, and so never saw it. The verb walk now tracks
parity too, and the two agree.

Verb-less, not route-less: the path comparison is untouched evidence that the
branch serves that path, so an inverted verb becomes a missing verb rather than
a missing route.

SCHEMA_BUMP 54 -> 55. Routes are emitted at parse time and replayed verbatim
from a warm cache, so without the bump an already-indexed repo keeps serving the
inverted verb and the fix looks inert. Free against origin/main (48).

Every rule mutation-checked: removing the ternary dispatch, either literal-arm
rule, the negated-ternary guard, or the parity walk each fails exactly the tests
that claim it. One assertion I wrote survived all five mutations and was removed
rather than kept.

Not a recall win on crypto-trading-bot, which contains neither shape — this is
precision insurance for dispatchers that do.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(routes): report every method a dispatch guard serves, not just the first (R3-8 part 1)

`if ((req.method === 'GET' || req.method === 'POST') && bundlesMatch)` is two
routes. The verb walk returned the FIRST verb it found, so `route_map` presented
a two-method route as GET-only and `impact` on the POST path found nothing.
Taken verbatim from the reporting repo's researchRunRoutes.js.

`governingVerb` -> `governingVerbs`, returning a list; `findVerbInSubtree` and
`verbFromTernary` likewise. A guard with several verbs emits one route per verb
via the new `pushPerVerb` — they share a path and a handler but not a method,
and `(method, url)` is the key every downstream consumer dedups and looks up on.

A disjunction yields ALL its verbs or NONE, which also fixes an over-attribution
the first-match rule had:

    req.method === 'GET' || req.method === 'POST'   ->  GET, POST
    req.method === 'GET' || isAdmin                 ->  no verb

The second is reached for ANY method when `isAdmin` holds. Reporting `GET` — as
first-match did — describes a route open to everything as single-method, which
is the direction this module treats as more expensive than saying nothing.
Negated, `!(A || B)` is `!A && !B`, so it excludes verbs rather than offering
them and yields none.

Generic descent deliberately stays FIRST-match rather than unioning across
children: an arbitrary node says nothing about how its children combine, and two
verbs found under one are far more likely unrelated than alternatives. `||` is
the one construct that genuinely means "either of these".

Pinned against regression: the pre-existing rule that distributes ONE verb
across an OR of PATHS must not start multiplying methods, and switch arms
inherit the full method set.

SCHEMA_BUMP 55 -> 56. Routes are parse-time output replayed verbatim from a warm
cache. Free against origin/main (48).

Four mutations, each failing exactly the tests that claim it: removing the
disjunction dispatch, dropping the all-operands rule, allowing a disjunction at
odd parity, and emitting only the first verb.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(routes): read `.match()` dispatch, and the capturing wildcard it needs (R3-8 part 2)

`RE.test(pathname)` and `pathname.match(RE)` are the same test with the operands
swapped. Only `.test` was read, which is why 28 of the reporting repo's 75 routes
still named the shared route table as their handler rather than the module that
serves them: those modules dispatch with `.match`.

THE CAPTURING WILDCARD, which is the part that made the rest inert.
`regexToRoutePath` accepted `[^/]+` and refused `([^/]+)` — `(` fell through to
the metacharacter bail. So the non-capturing form translated and the capturing
form produced nothing, and every existing test passed because every existing
test used the non-capturing form. The tests were written against the
implementation rather than against the corpus, and the reporting repo contains
no non-capturing path wildcard at all: a dispatcher captures the segment because
it needs the id. This alone also repairs the already-shipped `.test` rule.
A capture around anything that is NOT one segment still bails — `(.+)` spans
slashes — and the alternation is balanced, so `([^/]+` unclosed is not a match.

`.match` differs from `.test` in one way that matters: its result is USED, so it
is almost always BOUND, and the verb then lives in a later `if`:

    const runMatch = pathname.match(/^\/api\/research-runs\/([^/]+)$/)
    if (req.method === 'GET' && runMatch) { … }

Reading the verb off the CALL would report every one of those verb-less. So a
bound match records `name -> path` and the route is emitted where the binding is
TESTED, once per test site — one binding tested for GET and for PUT is two
routes. A reference counts only in a truthiness position (`&&`/`||` operand, or
a whole `if` condition), which is what separates `if (m && …)` from `m[1]`: a
read of the captured segment says nothing about dispatch and would otherwise
mint a duplicate route per use of the id. A binding never tested still emits one
verb-less route — the code did compute an anchored match against the path.

Regexes named by a same-file const resolve too (`pathname.match(POSITION_REPLAY_RE)`),
with the same ambiguity refusal the string-constant map uses: bound twice to
different patterns means dropped, because a half-right regex is a wrong route.

SCHEMA_BUMP 56 -> 57. Free against origin/main (48).

Nine mutations, each failing exactly the tests that claim it. TWO of my own
tests initially survived their mutation and were rewritten, not kept:
- the non-path-receiver case had no path token anywhere in the fixture, so
  PATH_TOKEN_HINT skipped the file and the assertion was satisfied by a file
  that was never examined;
- the negation case used `!m`, which never reaches the negation check at all —
  a `unary_expression` parent is not a truthiness position to begin with. The
  shape that exercises it is `!(req.method === 'GET' && m)`.
A declaration-site skip written alongside them proved unreachable for the same
reason and was removed rather than left to imply a hazard.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(processes): report what the detection ceilings dropped, instead of logging it at debug (W2-3)

`processProcesses` has five ceilings - the entry-point trace quota, the
per-entry trace budget, `maxTraceDepth`, `maxBranching` and `maxProcesses` -
and every one of them fired silently. The result came back looking whole and no
consumer could tell it was a sample. The code's own comment already said so:

    // A silently truncating cap reads as "this is everything", which is the
    // same class of confident-empty answer this work is about.

and then only called `logger.debug`. A log nobody has enabled is not a
disclosure.

`stats.truncation` is additive, so every existing consumer of `totalProcesses` /
`crossCommunityCount` / `avgStepCount` / `entryPointsFound` is unchanged. It
carries one boolean to branch on plus a counter per ceiling, kept SEPARATE
rather than summed because they mean different things: unexplored entry points
mean whole flows are missing, while a depth-capped trace means a flow is present
but shorter than it really is.

`processesDropped` counts against the DEDUPED population, not the raw trace
list - the gap between those two is deduplication doing its job, and counting it
as truncation would report a permanent non-zero on every healthy repo.

`truncated` is DERIVED from the counters rather than set at each site, so a
ceiling added later only has to increment its own counter to be reported.

Surfaced at `warn` and NOT gated on `isDev`: "823 flows" printed without it
reads as the complete set, which is the confident-empty failure wearing its
other face - a confident-COMPLETE one. The debug line stays for the per-entry
detail it carries.

Seven mutations, each failing exactly the tests that claim it, including BOTH
directions of the flag: hardcoding `truncated` false fails the four positive
cases, and hardcoding it true fails the nothing-was-truncated case, which is
asserted first precisely so the positives cannot pass vacuously. The
`walksCutByBudget` fixture gives every node exactly `maxBranching` callees so it
asserts its own counter and not a neighbour's.

Also fixes a defect this work exposed: 10b0c7a1 (W2-5) embedded a RAW NUL BYTE
in `trace.join(...)` instead of the backslash-u escape the rest of the repo
uses. It behaves identically at runtime, but `file` reports the source as
`data`, and grep, git diff and code search treat it as binary - several greps
against this file silently returned nothing while I was reading it. main was
clean here; two other files carry the same raw byte from before this branch and
are left alone.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): resolve members through a MEMBER-CALL producer's return shape (W2-1)

    const svc = new SignalService()
    const r = svc.make()
    return r.secretFlag        // <- no edge

`return-shape-members` types `r` to the producer that made it, but a member call
binds the spelling `svc.make`, and slicing that to its last segment leaves
`make` — a METHOD, never a callable binding in scope. The producer lookup failed
and the pass declined.

The limit shipped documented as needing inter-procedural receiver typing. It does
not. Measured on a fixture, the pipeline had already done the hard part:

  - `readMake -> Method:...SignalService.make#0` already resolves as an ordinary
    CALLS edge, so the receiver is already typed; and
  - `Property:...SignalService.make.secretFlag@N:C` already exists, because R3-4
    anchors a returned literal's keys to the METHOD that returns them, not only
    to free functions.

Both halves were present and unjoined — the same shape as R3-5 itself.

ADDITIVE, not a reroute. The new branch sits inside `if (producerFile ===
undefined)`, so it can only fire where the callable lookup already declined;
every reference that resolved before resolves identically, by construction
rather than by test.

Nothing new is inferred. The receiver is typed by the SAME predicate that typed
`r`, and it must itself resolve to a class — a receiver that cannot be typed
still declines, so `make.<member>` is never matched by name across the graph.
That fabrication is what the existing guards exist to stop and they all carry
over unchanged: the owner must resolve, its file must match the candidate's, and
`ownFilePaths` keeps the polyglot class registry from walking a JS read into a
Java field.

The owner segment is TWO parts for a method (`SignalService.make`) and one for a
free function (`makeSignal`), which is exactly how R3-4 qualifies each. That is
what separates two methods of one class returning the same key name from each
other AND from a free function of that name — the fixture gives `secretFlag`
three owners so a wrong resolution is detectable rather than a coin flip that
happens to look right.

Four mutations, each failing exactly the two tests that claim it: removing the
fallback, using the method alone as the owner segment, taking the producer file
from the reading file instead of the owner class, and dropping the
receiver-type requirement. 3,408 resolver tests pass, including
`polyglot-property-isolation`, which is the one this could plausibly break.

No SCHEMA_BUMP: this is a resolution pass over ParsedFiles, not parse-time
output, so a warm cache replays the same input and produces the new edges.

Measured on crypto-trading-bot: ZERO new edges, byte-identical at 62,158. Its
170 `const x = new Y()` bindings are overwhelmingly built-ins (Map, Set,
Promise, S3Client) rather than workspace classes whose methods return object
literals — it is a module-style JS codebase. Correctness fix for class-shaped
code, not a recall win on this corpus, and it should not be presented as one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): type a bare parameter from what its callers pass (W2-2)

    function readSpike(spike) { return spike.wickRatio }

had nothing to type `spike` from, so the read fell through to the 0.5 name tier.
That is the standing limit of R3-5 and, measured, by far the largest: 11,012 of
13,672 property edges on the reporting repo (81%) rest on that name guess.

The two facts needed were already extracted, for a different consumer. For JS
and TS among others, `callable-flow-captures` synthesizes:

    formal    owner=readSpike  binding=spike  parameter-index=0
    argument  source=s  parameter-index=0  direct-callee-name=readSpike

Joining them on (callee, parameterIndex) says which cell reaches which
parameter, and the argument's own binding is typed by the same
`findReceiverTypeBinding` a directly-bound receiver already uses. So the
parameter inherits the producer and `spike.wickRatio` resolves as evidence
rather than inference.

No new capture, no parse-time change, NO SCHEMA_BUMP. And deliberately not a
change to the callable-value-flow solver that owns these sites: that pass is
guarded by a fingerprint CORRECTNESS gate plus a timing budget, so this reads
the same facts and computes its own map.

AMBIGUITY DECLINES. A parameter whose callers pass different producers resolves
to nothing. Picking one would fabricate at the 0.9 PRECISE tier, which no
`minConfidence` floor can filter out — the same reason `buildConstantMap` drops
an ambiguous constant instead of taking the first.

Keyed by the formal's (scope, name), not by a definition id. The first attempt
used a def and measured `paramDef=NONE`: a parameter is not reachable through
`findValueBindingInScope` (its predicate is `isOwnableValueLabel`, which lists
Const/Variable/Property/Static because it exists for OWNERSHIP registration, and
a parameter is owned by nothing) and it is not a `local` binding either. The
formal site already states the scope its parameter binds in, which is enough.

Formals carry their DECLARING FILE in the key, so two same-named functions in
different files cannot answer for each other — dropping it makes both go
ambiguous and both readers silently lose their edge.

COVERAGE, counted rather than assumed. The synthesis skips an argument that is
itself a call result (an explicit `continue` in `callable-flow-captures`), so
`f(makeSignal())` emits no argument site and only the bound spelling
`const s = makeSignal(); f(s)` is served. That looked fatal until measured: in
the reporting repo, bare-identifier arguments outnumber call-result arguments
2,563 to 50 — 51:1. Extending the shared, benched capture synthesis for the 2%
case is not worth its risk.

Four mutations, each failing exactly the tests that claim it: keeping the first
producer instead of declining on conflict, dropping the read-site lookup,
matching a formal at index 0 regardless of the argument's index, and dropping
the declaring file from the formal key. Two of those could not be caught by the
first fixture at all — it had a single parameter and a single consumer file — so
the fixture gained a two-parameter callee and a same-named twin in a second file
before they were meaningful. The test helper also had to start filtering by
source FILE, or two different `readSpike` symbols merged into one count.

Measured on crypto-trading-bot: 36 reads left the 0.5 name-guess tier. 26 became
precise 0.9 edges (return-shape reads 1,130 -> 1,156, which is the whole delta),
and 10 became honest absences — the receiver was typed, the producer's shape was
known, and the member is NOT on it, so the site is claimed as disproved rather
than left for the name fallback to invent an answer for.

That is ~0.3% of the 11,012, and it should be reported as such. The 81% figure
is the size of the PROBLEM, not of this fix: the shape requires a bound
argument, a producer that returns an object literal, and a parameter read as a
receiver, and that intersection is narrow. The remaining name-tier reads are
mostly receivers no workspace producer types at all.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(processes,ci): anchor trace subsumption, cover the sink wiring, stop one bench guard hiding the rest (#2894, #2896, #2895)

Three follow-ups reported against #2856 after it merged. Each was reproduced
before it was fixed.

#2894 — trace subsumption matched mid-identifier.

`deduplicateTraces` decided whether one trace is a sub-path of another with an
UNANCHORED `String.includes`, so a match could begin in the middle of a node id:

    'X->AA->B'.includes('A->B')   ->   true

and `A -> B` was discarded as redundant against a chain `A` is not a step of at
all. Reproduced directly against the function before fixing.

Padding both keys with the separator makes `includes` match whole steps only.
Reported as measured-inert and that holds — the collision needs one node id to
be a strict suffix of another at a `->` boundary, which real ids
(`Function:<path>:<name>`) do not produce. Fixed anyway because the predicate
did not mean what the surrounding code says it means, in a function whose entire
job is deciding what to delete, and nothing pinned it.

`deduplicateTraces` is exported for the test, matching how `traceFromEntryPoint`
and `buildSinkFunctionSet` are already reached. The tests use bare ids because
the shape cannot be built from realistic ones — which is exactly why nothing
caught it. Alongside the regression case, two tests pin that GENUINE subsumption
still happens, prefix and suffix, so the fix cannot degenerate into "subsume
nothing" and pass the first test trivially. Mutation-checked: reverting the
padding fails the mid-identifier test and only that one.

The encoding assumes `->` never appears IN a node id; a C++ `operator->` would
defeat the join regardless of padding. Out of scope, but the assumption is now
written down where the join happens.

#2896 — the sink wiring was only ever exercised through its fail-open catch.

`processesPhase` reads `allFetchCalls` / `allORMQueries` off the parse output
inside a try/catch that falls open to "no sinks", and every phase-level test
omitted `parse` — so all of them took the CATCH branch and the success path had
no coverage. `getPhaseOutput` is a raw `as T` cast, so a field rename would make
the phase detect zero sinks while every test still passed, because zero sinks is
what they already assert.

The new test asserts the one thing only the success path can produce: a flow
ENDING at the sink while a longer chain continues past it. Its control is the
same graph with no `parse` dep, which must NOT produce that terminal — without
the control the assertion could pass for an unrelated reason. Also asserts
`processesPhase.deps` contains `parse`, so the read and the declaration cannot
diverge, and that a parse output missing those fields still fails open rather
than losing every process.

Mutation-checked, including the exact drift scenario reported: renaming
`allFetchCalls` at the read site, dropping `parse` from `deps`, and passing no
sinks to `processProcesses` each fail exactly the test that claims them.

#2895 — a failing bench guard aborted the job and masked every later guard.

Every step in the benchmarks job was fail-fast, so the first failing `--check`
aborted it and the rest reported `skipped`, which reads identically to "nothing
to do". Audited over 13 runs on #2856: the job succeeded zero times and the last
two guards executed zero times for the life of the PR, while two reviews read
the checks summary and saw nothing wrong. Both guards did in fact pass — that
was luck, not verification.

`if: ${{ !cancelled() }}` on all ten steps after the first, so one stale
baseline reports one red step instead of hiding nine. `!cancelled()` rather than
`always()` so an explicit cancel still stops the job instead of running seven
minutes of benchmarks nobody is waiting for.

The two steps easiest to miss are covered: `Receiver-resolution drop guards`,
whose `run:` sits twenty lines below its `name:` behind a long comment, and the
final `Cross-language pipeline benchmarks` step, which is not a `--check` and so
falls outside any grep for one — and is one of the two that never ran.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(parse): capture a fetch call site even when its URL is not a literal (#2897)

The `fetch` rule required the argument to be a string or template literal:

    arguments: (arguments
      [(string (string_fragment) @route.url)
       (template_string) @route.template_url])

so `fetch(url)` with a variable matched nothing at all. Measured across this
repository's own TypeScript sources: **44 of 47 fetch calls pass a variable**, so
94% produced no site.

That is what makes R3-6 look inert. The sink set is built entirely from
`allFetchCalls` / `allORMQueries`, so a function performing an outward call
through a computed URL was never a sink, no flow could terminate there, and the
sink-first ranking rule never changed an ordering. The feature was fine; the
signal underneath it was almost always empty.

The URL alternation is now OPTIONAL, so one match covers both shapes. The R3-6
sink set needs only WHERE the program reaches outward, not where to.

Route linking is untouched, by construction rather than by hope:
`processNextjsFetchRoutes` normalizes the URL first and skips anything that
yields nothing, so a URL-less entry cannot mint a FETCHES edge. Verified on this
repo — FETCHES went 8 -> 9 across the change, i.e. the widening added sink sites
without inventing route edges, which was the one real risk here.

Tested in BOTH JavaScript and TypeScript, since the rule is duplicated in each
query block and fixing one would have left the other blind:

  - a variable argument is captured, with no URL   <- the regression case
  - a computed argument (`fetch(buildUrl(), {...})`) likewise
  - a literal URL is still captured WITH its URL   <- route linking depends on it
  - a template URL likewise
  - exactly ONE site per call — an optional alternation must not make a literal
    match twice, which would double-count the site and could mint two edges
  - `prefetch('/x')` is still not a fetch

Mutation-checked: restoring the mandatory alternation fails six of the twelve,
three in each language.

SCHEMA_BUMP 57 -> 58. Parse-time capture output is replayed verbatim from a warm
cache, so without the bump an already-indexed repo keeps its empty sink set and
the fix looks inert — which is the failure this constant exists to prevent, and
would have reproduced the very symptom being fixed.

Not addressed here, and worth stating: this widens `fetch` only. The reporter's
broader point stands — anything keyed on FETCHES / QUERIES is only as good as
the extraction underneath it, and the ORM side has not been measured. A guard
that fails when a corpus known to contain outward calls yields zero sites is the
right follow-up; this change makes such a guard meaningful rather than
tautological.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(bench): re-baseline receiver-resolution for the two fixtures this PR adds

`receiver-resolution --check` failed on:

    countArm.totalDropsAllKinds: 140 -> 148
    countArm.bySiteKind.write:    11 ->  19

Investigated before touching the baseline, because a guard that exists to catch
unexplained movement should not be silenced by an unverified story.

WHAT IT IS: the count arm runs the real pipeline over a corpus that includes
`test/fixtures/lang-resolution/`, and this PR adds two fixtures there —
`member-call-producer` (W2-1) and `parameter-producer` (W2-2). Each returns an
object literal with two keys, and a producer writing its own returned key is a
write site the receiver recorder logs. Four each, eight total.

Attributed by dumping the individual drops rather than reading the aggregate:

    member-call-producer/src/producer.js   secretFlag, wickRatio  (2 lines) = 4
    parameter-producer/src/producer.js     source, wickRatio      (2 lines) = 4

The eleven drops already in the baseline are all `javascript-object-properties`
fixtures of exactly the same shape, so the new ones are not a new KIND of drop —
they are more of one the baseline already records. This is the first case the
guard's own failure message names: "a fixture was added".

WHAT IT IS NOT: `callDrops` — THE gate number, and `call`-only by deliberate
design because reads and writes "would inflate it" — is unchanged at 102. `read`
drops unchanged at 27. The SHAPE ARM shows no drift at all: no receiver spelling
moved between RESOLVES / VISIBLE-GAP / INVISIBLE-GAP, so no resolution
regressed.

HOW IT WAS ISOLATED, since the first attempt was misleading and the record is
worth having: reverting `return-shape-members.ts` alone did NOT reproduce it and
pointed away from W2-1/W2-2. Only a commit-level bisect was trustworthy —
`origin/main` OK, W2-8 OK, W2-3 OK, then W2-1 +4 and W2-2 +4, which matches the
fixture count exactly. A file-level revert leaves the fixtures in the tree, and
the fixtures are the cause.

The update is two numbers. Nothing else in the baseline moves.

Worth noting where this failure became visible at all: under the fail-fast
benchmarks job it would have aborted the run and shown the five guards after it
as `skipped`. It is legible here because #2895 — fixed in this same PR — now
lets every later guard run.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(analyze): stop `--pdg` runs reporting a healthy index as INCOMPLETE

Every `gitnexus analyze --pdg` reported a graph-write collapse and exited 1 on an
index where every row had persisted. Reported by a user hitting it on a real
repo; introduced by this PR's own W2-6(d).

    Repository indexed INCOMPLETELY
    the pipeline produced 200,501 relationships but only 64,764 are readable

The index was complete: 200,190 rows present, 109,905 PDG and the rest
structural, all queryable.

WHAT WENT WRONG. W2-6(d) made the persisted side count STRUCTURAL rows only —
correct, and the reason is in its own comment: PDG writes into the same table, so
counting everything let PDG surplus mask real structural loss. But the expected
side kept using `graphEmitManifest.totalRows`, and that is a BUFFER-POOL SIZE
HINT which counts every streamed row. PDG streams through that same sink, so the
check compared a structural-plus-PDG expectation against a structural
measurement. On any repo with a PDG layer that is a guaranteed false collapse.

It compounds rather than merely misreporting: the run stamps
`graph-write-collapsed`, and W2-6(a)'s rebuild trigger — added alongside it —
forces a full re-analyze next run, which collapses again. A permanent rebuild
loop, on an index that was never damaged, at ~100s a cycle.

MEASURED RATHER THAN ASSUMED, because the first attempt was wrong. I first
subtracted PDG edges RESIDENT in `graph.relationshipCount`, rebuilt, re-ran the
failing command and got byte-identical numbers. Instrumenting the three terms
showed why:

    relationshipCount=20,825  graphManifestTotalRows=179,676
    pdgEmitManifest=absent    residentPdgInGraph=0

PDG is not resident in the graph AND has no separate manifest — it streams
through the ordinary `GraphEmitSink`. The reverted attempt is not in this diff.

THE FIX. A pair key cannot separate them: it is `From|To` NODE LABELS, and a CFG
edge shares `Function|Function` with CALLS. Only the write path sees
`relationship.type`, so the sink now counts a `structuralRows` subtotal there and
publishes it on the manifest. `totalRows` is unchanged — it still sizes the
buffer pool, which is what it was for.

WHY THIS SHIPPED UNCAUGHT, and what changed about that. The wiring test kept a
LOCAL MIRROR of the expected-count expression "because the production expression
is inline in a 3000-line function". A mirror cannot catch a term the original got
wrong. That expression is now an exported
`computeExpectedStructuralRelationships` which production calls and the test
imports.

It also takes the MANIFEST rather than a pre-selected number, deliberately: the
defect was choosing the wrong FIELD, and a numeric parameter leaves that choice
at a call site no unit test can reach. Verified — with the helper taking a
number, reverting to `totalRows` failed nothing; taking the manifest, the same
revert fails four tests.

Verified end to end on the reported command: `analyze --force --embeddings 0
--pdg` now exits 0 with "indexed successfully", 86,963 nodes / 200,217 edges, and
the run clears the stale collapse stamp.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(routes): scope match bindings, and intersect ternary conjunctions

Two ways the dispatch-guard walk minted a route that does not exist — the one
thing this module's header says is worse than missing one.

MATCH BINDINGS WERE KEYED BY BARE NAME, FILE-WIDE. `collectFromMatchBindings`
walked from `tree.rootNode` and resolved `matchBindings.get(node.text)` at every
identifier in a truthiness position, so a same-named binding in ANOTHER function
answered for it. The poison check only fired on a second REGEX match with a
different URL; a non-match binding never entered `collectFromRegexDispatch`, so
nothing refused it. Reproduced:

    function handleReplay(req, res) {
      const m = pathname.match(/^\/api\/live\/positions\/([^/]+)\/replay$/);
      if (req.method === 'GET' && m) { … }
    }
    function handleSettings(req, res) {
      const m = req.headers['x-mode'];        // unrelated value, same name
      if (req.method === 'DELETE' && m) { … }
    }

    GET    /api/live/positions/{param1}/replay  handler=handleReplay    correct
    DELETE /api/live/positions/{param1}/replay  handler=handleSettings  FABRICATED

Wrong in method, handler and line. `m`, `match`, `result` are the ordinary names
here. Two ways the truth was then lost: the fabricated route is VERBED, so
`reconcileDispatchGuardRoutes` kept it and dropped the true verb-less one — the
#2856 `/api/report` shape, through the channel this series added — and `tested`
was name-keyed too, so the tail loop suppressed the real binding's own honest
verb-less emit before reconciliation ever ran.

`matchBindings` and `tested` are now keyed on (enclosing function, name).
`enclosingFunction` is extracted from the walk `enclosingHandlerName` already
did, so there is one function-boundary mechanism, not two. A second declarator
for a key refuses it, and an assignment refuses the name in its own scope and
every enclosing one. `buildRegexConstantMap` refuses a name rebound to anything
that is not a regex literal, closing `let RE = /…/; RE = buildDynamic(req)` and
the `new RegExp(prefix + '/x')` twin.

A use resolves only within its own function. Resolving outward would need a
complete declaration model — params, imports, catch bindings — and a miss there
fabricates exactly the route this fixes. Declining costs the verb, not the path.

THE TERNARY TOOK FIRST-MATCH WHERE THE ALGEBRA IS INTERSECTION. The docblock
proves `c ? A : false ≡ c && A` and says "both hold, so search both", but
`firstNonEmpty` returned one operand's set unintersected:

    (req.method === 'GET' || req.method === 'POST')
      ? (req.method === 'POST' || req.method === 'PUT')
      : false                                    emitted GET and POST
                                                 only POST is reachable
    req.method === 'GET' ? req.method === 'POST' : false
                                                 emitted GET, unsatisfiable

`intersectVerbs` replaces it for both conjunction shapes. An empty side still
yields to the other — "names no method" is not "admits none", which is what the
`isAdmin && POST` fallthrough is for — but two non-empty sides intersect, and an
empty intersection is an unsatisfiable guard that yields no verb.

Both changes strictly REMOVE routes, so SCHEMA_BUMP 58 -> 59: routes are
parse-time output replayed verbatim from a warm cache, and without the bump an
indexed repo keeps serving the fabricated verbed route while the fix looks
implemented.

10 tests added, 9 of which fail without the change. All 86 existing assertions
pass unchanged; none was weakened.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

* fix(scope-resolution): bind a type parameter only inside the scope it opened

W2-8 captured `@declaration.type-parameters` on EVERY `type_alias_declaration`,
but an alias becomes a SCOPE only when its value is an `object_type`
(`typescript/query.ts:149`). For a union, array, conditional, mapped, tuple or
function alias there is no scope, so the def — now carrying `typeParameters` —
attached to the innermost enclosing scope, which is the MODULE. And
`typeParameterNamesInScope` folds each scope's set from its PARENT'S, so the
name landed in every scope in the file. The `USES` guard then deleted every edge
whose target had that simple name:

    export interface Result { ok: boolean }
    export type Maybe<Result> = Result | null      // one ordinary line
    export function readResult(r: Result) { … }    // its USES edge is DELETED

Silent data loss, in the edge class whose whole purpose is answering "what
breaks if I remove this field?". Measured: adding two scope-less generic aliases
emptied the fixture of USES edges entirely.

The existing fixture could not see it — it wrote `type Box<Result> = { held: Result }`,
the ONE alias form that opens a scope.

`typeParameterNamesInScope` now reads a def's `typeParameters` only when that
declaration OPENED the scope owning it: `scope.kind !== 'Module'` and the def-id
position equals the scope range start, via the canonical `definitionIdPosition`
rather than slicing the id. That is the same alignment test `pickCallerCallableDef`
uses to tell a closure from a nested function, and it is language-neutral — it
also covers `function f() { type W<Result> = Result[] }`, which a module-scope-only
stopgap would miss.

Every language populating the capture was audited (ts, java, csharp, kotlin,
rust, cpp): all anchor it on a declaration that IS a scope node, including C++
where the capture rides `template_declaration` but the anchor is the inner
`class_specifier`. Go uses a separate sidecar. The TypeScript non-object alias
was the only mismatch in the codebase. `query.ts` is untouched.

THE GUARD ALSO SAT AT THE WRONG LAYER, which forced three defects at once. It
keyed on `edgeType === 'USES'` — and `mapReferenceKindToEdgeType` maps THREE
kinds there, `type-reference`, `value-ref` (#2437) and `macro` (#1934) — and,
because `Reference` carries no spelled name, substituted the resolved def's name
via `simpleNameOfDefId`. So `import { Result as ApiResult }` inside
`function unwrap<Result>()` deleted a REAL edge, while a namespace-qualified
target (`Host.Result`) kept a FALSE one, and a positional `@row:col` suffix broke
the last-colon parse outright.

Moved to `lookupForSite`'s `case 'type-reference'` in `resolve-references.ts`,
which has the spelled `site.name` and the reference kind in hand. One line closes
all three, deletes `simpleNameOfDefId` — a byte-identical duplicate of
`simpleNameOfGraphId` — and removes the only `graph-bridge/` -> `scope/` import
in that directory.

Honest scope: all three sub-defects are real in the code but none is observable
end-to-end today (`value-ref` never reaches this path; TypeScript emits no
cross-file USES for a type annotation at all — a separate pre-existing gap). Those
arms are labelled forward guards in the test rather than claimed as repros.

Fixture grows 1 file -> 4; 3 of 9 assertions fail without the change. The
scope-capture TypeScript fingerprint moves for FIXTURE-CORPUS GROWTH ONLY, with
per-file accounting that sums to the delta and JavaScript unchanged as the
control — see the `_rebaselined_` key.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

* fix(scope-resolution): refuse an ambiguous formal, stop the walk at the nearest binding

Two ways W2-2 typed a parameter from the wrong caller, both at the PRECISE 0.9
tier — above every `minConfidence` floor, so nothing downstream can filter them.

`formals` WAS LAST-WRITE-WINS. The key is (filePath, ownerName, parameterIndex),
`ownerName` is a bare identifier, and `emitFormalFacts` emits one site per
parameter of EVERY function collected, nested functions and class methods
included. A plain `.set` let two same-named callables in one file collide — a
free `parse` and a nested `parse`, a free `apply` and `Runner.apply` — so the
last one visited won, fabricating an edge on the loser and leaving the genuine
consumer untyped. The file's own comment covers only the cross-FILE axis.

The correct shape was thirty lines below, in the `producers` map, which does
`producers.delete(cell); conflicted.add(cell)`. `formals` now refuses the same
way: a key claimed by two DIFFERENT parameters is deleted and recorded, so a
third same-named formal cannot re-claim it. Re-stating the same cell is not a
disagreement, so a benign duplicate capture cannot poison a real key.

THE SCOPE WALK CLIMBED PAST A NEARER BINDING. The docblock claimed it stops at
the first scope carrying the name, but it consulted only `parameterProducers` —
a shadowing `const`, a catch binding or an arrow parameter is not in that map, so
the walk went straight past it to the enclosing formal:

    function readSpike(spike) { … items.map((spike) => spike.wickRatio) … }

typed the ARRAY ELEMENT from the outer parameter. `parameterProducerFor` now
stops at the first scope that binds the name AT ALL — reading the scope's own
tables, the same channels and the same reasoning as the sibling
`isNamespaceNameShadowed` — and then stops at a Function boundary. That boundary
is what covers the anonymous arrow: `collectFunctions` drops a callable it cannot
name, so an anonymous arrow emits no formal site and its scope looks empty while
in fact rebinding the name. The cost — a closure genuinely reading an enclosing
parameter now declines — is documented as the deliberate trade.

No cycle guard, deliberately and with the reason stated: both constructions of
`indexes.scopeTree` validate through `buildScopeTree`, which enforces strict
parent-contains-child ranges, so a cycle needs a scope strictly containing
itself. A per-site Set on every read/write site in the repo would defend against
a state the builder rejects.

5 fixtures, 5 assertions; 4 fail without the change and the control passes both
ways. Still uncovered and not faked: a `for (const x of …)` binder shadow — the
binder lives in the loop header, so JS emits no scope to stop at and no Function
boundary intervenes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

* fix(analyze): measure one population in every config, split the stamp on the verdict

`1b41c9df6` fixed the collapse check for the STREAMED configuration by giving
the sink a `structuralRows` subtotal. It does not cover the other one.

`resolveStreamGraphEmit` and `resolveStreamPdgEmit` both open with a
`force === true` gate, so a run without `--force` streams nothing: there is no
manifest, `structuralRows ?? 0` contributes 0, and
`scope-resolution/pipeline/run.ts:1222` (`input.pdgEmitSink ?? graph`) writes PDG
into the ordinary in-memory graph, where `relationshipCount` counts it. And
`isIncremental` requires an existing meta, so a FIRST run is a full write and the
check runs. A first-time `gitnexus analyze --pdg` on a fresh repo therefore
compared structural+PDG against structural and exited non-zero with
"Repository indexed INCOMPLETELY" on a healthy index.

MEASURED, not assumed — `runScopeResolution({ pdg: true })` with no sink:

    pdgEmitSink        = absent (non-force shape)
    relationshipCount  = 1
    residentPdgInGraph = 1
    byType             = [["CFG",1]]

The prior `residentPdgInGraph=0` was taken on a `--force` run, where
`input.graph` IS the sink; it never spoke to this case. `graph-collapse-wiring.test.ts`
had pinned the gap, asserting a PDG-inclusive in-memory count was a valid
structural expectation.

`countStructuralRelationships(graph)` filters `PDG_EDGE_TYPES` over
`forEachRelationshipFields` — the same predicate the sink uses for
`structuralRows` and the adapter for `structuralEdges` — so all three terms
measure one population in every configuration. Declining whenever
`pdg && !streaming` was rejected: that is the DEFAULT PDG shape, so the guard
would be off for every non-force run including the only full write most users
ever do. An unscannable graph (mocked pipelines) yields NaN, the same fact the
old `undefined + rows` produced and one `detectGraphWriteCollapse` already
documents as expected input.

THE THREE-WAY STAMP WAS A TWO-WAY. The comment enumerated collapse -> stamp,
healthy -> clear, no verdict -> carry forward, but the code split on the WRITE
MODE. `graphWriteCollapsed` is undefined for two different reasons, and one of
them is "the structural query threw" — so on a full run where the count could
not be READ, the code took "healthy, clear it" and erased a stamp recording real
edge loss. Run 3 then printed "Already up to date" forever: the exact failure the
comment says it fixed, reachable through the new code's own `catch {}`.

`detectGraphWriteCollapse` now returns `'collapsed' | 'healthy' | 'unmeasurable'`
with a reason, and `selectPersistedCollapseStamp` is a pure exported function
production calls. Two boundaries worth naming: `expected === 0` is unmeasurable
(its own docstring calls it "could not report a total"), but the small-repo
exemption and a cleared ratio are HEALTHY — both counts were taken. Making the
exemption a non-verdict would leave a stamp unclearable on any repo that shrank
below 100 edges, relocating the wedge rather than fixing it.

`getLbugStats` now reports `structuralEdgesError` and warns, and `run-analyze`
falls back to `stats.edges` only when the run had no PDG layer, where the two are
equal by construction. With `--pdg` on there is no substitute, so the absence
becomes an explicit unmeasurable verdict — which preserves the stamp.

13 tests added; 8 fail without the change. The integration suite now seeds a CFG
row and asserts `edges` moves while `structuralEdges` does not — the exclusion
filter was previously unexercised, its own comment conceding "structural == total
here".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

* fix(server): check the collapse before publishing the index

W2-6 marked a collapsed run's job `failed`, but the check ran INSIDE
`.then(() => backend.init())` — after the publish. `LocalBackend.init()` is the
publish step: it refreshes the registry and atomically swaps the in-memory repo
map every MCP tool and HTTP route resolves through, and its `validate` pass
prunes only entries whose metadata is provably gone, so it can publish but never
quarantine. The known-incomplete database was therefore live and queryable before
the job was ever marked failed — the job status was a label on a published index,
not a gate. The pre-existing comment two lines above says so outright: "the repo
is actually queryable when the client receives the SSE complete event."

`backend-client.ts` routes `failed` to `onError` and never calls `onComplete`, so
the UI showed an error toast while every query against that repo answered from
the incomplete graph — precisely the confident-wrong-answers failure this guard
exists to prevent.

The collapse branch now returns before publishing; the healthy path publishes via
a nested `backend.init()` so the trailing `.catch` still converts init failures
into the same message. `closeDbHandle()` runs on both paths — it is eviction, not
publication, and the worker rewrote the DB files regardless of outcome, so
skipping it would leave a stale pre-rewrite handle.

Honest limit, stated in the error string rather than overclaimed: this keeps a
FIRST-TIME analyze unpublished, which is the UI's main flow. On re-analysis of an
already-published repo the existing map entry survives and points at the same
storagePath. A real quarantine needs an un-register hook on `LocalBackend`, which
does not exist today — follow-up.

`'partial'` was considered and rejected on evidence: it is not a status. It is an
embedding-specific detail object in the `updateJob` allowlist; the status union
excludes it. Adding it would make `isTerminalJobStatus` false, so `sse-progress`
never writes a terminal frame and never calls `res.end()` — the stream hangs
open — while `backend-client` falls through to `onMessage` and `api.ts` spins the
full hold-queue timeout. `failed` at least terminates.

The failure branch also now sets `repoName`, which only the success path did.

First tests this file has ever had: 4, of which 2 fail without the change. They
assert the ORDERING, not just the final status, and build the worker message by
calling the production `projectAnalyzeResultForIpc` so a field rename breaks the
test instead of silently disabling the branch.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

* fix(processes): count the entry-point cap, and make the disclosure proportionate

W2-3 added a truncation disclosure and then missed the largest ceiling it was
written to report. `findEntryPoints` ends `.slice(0, 200)` and
`entryPointsUnexplored` counted against the POST-slice list, so candidates
201..N were invisible — while the derivation docblock claimed "a new ceiling
added later cannot be forgotten here". An existing one was. On this repo's own
corpus the new counter reads 780 of 980 candidates never ranked in.

`entryPointCandidatesDropped` reports the pre-slice count, folded into
`truncated`, with `ENTRY_POINT_CANDIDATE_LIMIT` extracted and `findEntryPoints`
taking the same optional out-parameter `traceFromEntryPoint` already uses. Its
return contract is unchanged.

THE WARN FIRED ON EVERY RUN. At the shipped defaults — only `maxProcesses` is
overridden — `calleesDropped` fires for any function with 5+ callees and
`tracesDepthCapped` for any chain deeper than 10, so an ungated `logger.warn`
was constant background noise, and a warning that always fires is one nobody
reads. The split is the module's own, from the `ProcessTruncationStats` docblock:
"unexplored entry points mean whole flows are missing, while a depth-capped trace
means a flow is present but shorter than it really is."

So `warn` iff whole flows are absent — candidates dropped, entry points never
traced, or flows dropped at `maxProcesses` — and `debug` for a run truncated only
in depth or breadth. `stats.truncation` still carries all six counters; the
machine-readable channel is unchanged, only the log level moves.
`entryPointCandidatesDropped` stays in the loud set deliberately: it is the only
ceiling that GROWS with repo size, while the other two can only fire while
`maxProcesses` is small enough to bind, so gating on those alone would go silent
on exactly the large repos where 200-of-several-thousand is the thinnest sample.
The message leads with the ratio so the line carries a fact, not an alarm.

THREE COMPARATORS ALLOCATED PER COMPARISON, in the function whose own comment
explains the hoist that removed this shape (`deep_chain` 1233 -> 102 ms).
Measured here: +99 ms once per analyze at 80k functions — small, because `n` is
capped at 200 entry points x a 12-trace budget = 2,400 traces regardless of repo
size. Worth fixing anyway: 23,851 comparisons cost 70,524 joins.

One shared `sortByDepthThenPath` (Schwartzian, key built once per trace) now
serves all three sites, and `rankedByInterest` additionally hoists the `isSink`
test that ran twice per comparison. It also settles a separator inconsistency:
`deduplicateByEndpoints` joined on a SPACE while `traceOrderKey` used NUL, and
node ids embed file paths, so two different traces could produce the same key and
the tiebreak fell back to the insertion order it exists to remove — the same
hazard this series' own `->`-padding fix addresses. Order identity is pinned by a
seeded 200-trace corpus asserting the new sort equals the old one exactly.

11 tests added, 9 failing without the change, including two end-to-end
insertion-order arms. The W2-5 determinism block is unregressed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

* fix(docs): restore the agent guidance, and put it in the generator that deleted it

Commit `9e602aef0` — whose message is entirely about the fetch capture — also
regenerated the machine-managed `<!-- gitnexus:start -->` block from a local
non-`--pdg` index, deleting from both AGENTS.md and CLAUDE.md:

  - the whole `MUST treat risk: UNKNOWN as unresolved, not as low` bullet
  - the `pdg_query({mode:"controls"/"flows"})` bullet
  - the `mode: "pdg"` text on the impact bullet
  - `…never read UNKNOWN as an all-clear…` from Never Do

and regressing the stats 248612/565510/918 -> 42853/135955/758. All four document
SHIPPED features: `pdg_query` at `mcp/tools.ts:675`, dispatched at
`local-backend.ts:2233`; `mode: "pdg"` at `tools.ts:448`; `riskNote` at eight
sites.

It matters more than a docs nit because the SAME series makes `UNKNOWN` dominate
a mixed candidate set (`local-backend.ts:6058`) — correct, and it makes UNKNOWN
far more common. The surviving rule only warns on HIGH/CRITICAL, so a set
measuring CRITICAL now reports UNKNOWN and that rule no longer fires, while the
rule that covered the gap was deleted in the same commit range, from all three
files agents actually read.

ROOT CAUSE, which is why restoring the files alone would not have held.
`cli/ai-context.ts` is the template. The `pdg_query` and `mode: "pdg"` text IS in
it, correctly `hasPdg`-gated — a non-PDG analyze SHOULD drop those. The
`risk: UNKNOWN` rules were never in the template at all: they had been hand-added
INSIDE the machine-managed region, so every `gitnexus analyze` on any repo
silently deleted them. This was the second occurrence; #2856's `8f8261021` was
the first. Both lines are now generated unconditionally — they describe impact's
risk semantics, which are not PDG-dependent — so regeneration restores them
instead of removing them.

AGENTS.md and CLAUDE.md are byte-identical to origin/main again, and the fixed
template reproduces that block exactly for `hasPdg: true` plus the real stats.
`.claude/skills/gitnexus-guide/SKILL.md` regains the "Inline staleness signal"
section for a live feature (`local-backend.ts:921`, `:1017-1024`, `:1995`); the
npm mirror's lack of it is pre-existing drift and is left alone, so the new sync
guard is scoped to the canonical and plugin copies.

Guards added, both demonstrated failing against the unrestored files: the managed
block must contain the UNKNOWN policy and its Always-Do/Never-Do bullet counts
must not fall below a floor, and `generateGitNexusContent` must render both lines
for `hasPdg` true AND false while keeping `pdg_query` gated. The existing
fragment lists could never have caught this — they assert presence, and this was
a deletion.

One deliberate loosening, called out rather than buried: the restored text pushes
`ai-context.test.ts`'s block-size ratio past 0.55, so it moves to 0.65. That test
argues against exactly this nudge-the-number pattern. The defence is that the
wording is origin/main's own and the 0.55 budget was calibrated against a block
already missing it; trimming shipped guidance to fit a budget would be the wrong
direction.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LZu3G5USo5Rs9myaaxVWjK

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-09 11:44:52 +01:00
Gergő Magyar
78ecce1b92
perf(import-target): index the workspace once per run for go/csharp/dart/ruby (#2898)
* perf(import-target): index the workspace once per run for go/csharp/dart/ruby

Four import-target resolvers answered their lookups with a full
`allFilePaths` scan per import, making resolution O(imports x files):

- go (#2877): `findRootPackageFiles` / `findAllFilesInPkgDir`, the latter
  once per path segment on the GOPATH fallback. Most Go imports are
  external, so the whole cascade ran to completion before returning null.
- csharp (#2878): the no-csproj leg took the raw Set past the memoized
  index the csproj leg was already using - up to eight passes for a
  four-segment `using`.
- dart (#2879): one scan per candidate path, and for an external package
  both candidates miss, so both always ran to completion.
- ruby (#2880): a complete `buildSuffixIndex` rebuilt and discarded per
  `require` - every require paid to index every file in the repo.

Each now reads an index memoized on the `allFilePaths` Set identity, the
shape `getPythonFileIndex` (#1918) and csharp's own `getWorkspaceFileIndex`
(#1881) already used. Two shared modules back them:

- `workspace-file-index.ts`: normalized list + `SuffixIndex` + a
  normalized->raw map, for csharp and ruby.
- `package-dir-index.ts`: "which files live directly inside a directory
  ending with <path>", for go and csharp. Candidates are bucketed by the
  directory's last segment rather than by indexing every directory suffix,
  which would cost O(files x depth) entries at kernel scale (#2649).

Behaviour is unchanged, including the tie-breaks that are expressed only
through Set-iteration order and `indexOf` positions: the go root leg stays
sorted and its package leg stays unsorted, the first-occurrence rule that
excludes a directory nested inside a same-named directory is preserved,
csharp's whole-path match still beats an earlier suffix match, and dart
still tries `lib/<rel>` fully before bare `<rel>` and matches raw paths.

Verified two ways. `import-target-index-parity.test.ts` keeps verbatim
copies of the pre-change implementations and diffs against them over a
deterministic corpus plus hand-built layouts for each tie-break; six
mutations of the new code were confirmed to fail it. Separately, the bench
corpus produces byte-identical fingerprints against the pre-change
resolvers at both 400 and 1600 files.

`bench/import-target/measure.mjs` gates both arms in CI: per-language
output fingerprints, a scaling budget (measured 0.98-1.12 here, 3.32-4.10
against the pre-change scans), and the corpus shape, so the corpus cannot
be shrunk below the size the scaling arm needs and still print PASS.

Closes #2877
Closes #2878
Closes #2879
Closes #2880

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCptYZWRgnnJ821rzebQyj

* perf(import-target): cover kotlin, and add depth + absolute-cost arms

#2872 landed the same index hoist for Kotlin while this branch was open.
Fold it into the shared measures so all five resolvers are gated on one
corpus, and adopt the two arms that PR's review proved a scaling ratio
alone cannot carry.

- `bench/import-target/measure.mjs` gains a kotlin arm: a Gradle-shaped
  corpus with per-module source roots over one package namespace, `.kt`
  and `.kts` stems, a nested same-name package directory, and a share of
  wildcard `.*` imports so the package fan-out tier — the only tier whose
  output is order-bearing — is inside the fingerprint.

- `depth_ratio`: deep arm at a FIXED file count with ~6x the path
  components. `scaling_ratio` divides the file count out, so it is
  scale-invariant and structurally cannot see a cost that grows with path
  depth instead, and `buildSuffixIndex` (C#, Ruby) and Kotlin's
  `suffixByStem` each emit one entry per component. Measured: go 0.98,
  dart 0.88 (depth-free indexes), ruby 1.48, kotlin 2.20, csharp 3.45 —
  which is why the budget is per language. One global budget would have
  to sit at 5.0 and would let Dart go 0.88 -> 4.9 unnoticed.

- `small_ms_ceiling`: an absolute bound at 4x the measured arm, because a
  constant-factor regression that grows both scale arms equally passes
  every ratio.

- The deep arm must resolve exactly what the small arm resolves. Padding
  was supposed to change depth and nothing else; a deep arm that stopped
  resolving would be timing the null path.

The five fingerprints are unchanged by this commit - verified against the
previous baseline before rewriting it, so adding the kotlin arm and the
deep scale did not perturb the four languages' output.

Kotlin joins the Set-iteration counter in
`import-target-index-parity.test.ts` too. Its own guard
(`kotlin-import-index-reuse.test.ts`) counts index BUILDS, which a scan
added beside a reused index does not move.

That counter is also the only DETERMINISTIC guard against a reintroduced
scan, and this commit documents why rather than pretending otherwise: a
full workspace scan on 1-in-32 imports was measured to pass every timing
arm here (dart, 1.458 scaling against a 1.8 budget, 1.736 ms against a
4 ms ceiling) while the counter reads 14 instead of 1. Tightening the
ceilings toward the noise floor to chase that case would only buy flaky
CI.

`bench/kotlin-import-target/` stays: it fingerprints both file-set
iteration orders and probes the four-tier cascade shape by shape, neither
of which this corpus does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCptYZWRgnnJ821rzebQyj

* perf(import-target): merge matching package dirs in one pass

`filesDirectlyInPkgDir` re-spread its accumulator once per matching
directory, costing O(files x dirs^2) copies per import. On a Go monorepo
where many services carry the same package directory (`svcN/internal/pkg`,
which Go's GOPATH cascade queries by two-segment tail) that made the index
SLOWER than the scan it replaced: 13.4x at 1600 matching directories.

Append into one array and sort once. Measured against a verbatim copy of
the pre-change scan, output byte-identical at every k:

  k=200   1400 files   old 0.126 ms   was 0.169 ms   now 0.042 ms
  k=800   5600 files   old 0.457 ms   was 3.002 ms   now 0.185 ms
  k=1600 11200 files   old 0.960 ms   was 12.890 ms  now 0.232 ms

The index now beats the scan by 2.5-4.1x on this shape instead of losing
to it by up to 13x.

Also drop the min-`ord` comparison in `firstFileDirectlyInPkgDir`: the
build loop appends a directory to its last-segment bucket the moment it
accepts that directory's first file, so bucket order already IS ascending
first-file-`ord` order and the first hit is the minimum. Differentially
verified at 0 divergences. The invariant, and the build-loop edits that
would silently break it, are now recorded at the early return.

Type the index containers as deeply readonly so Go's deliberate
`[...rootFiles].sort()` copy is compile-enforced rather than
comment-enforced, and correct the header's claim that a polyglot repo
"never pays" -- only the stored index is per-language.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013rLy781K8E3rRHFGEe1khJ

* test(import-target): guard index reuse at the adapter boundary

`workspace-file-index.ts` documented the hazard as "a defensive
`new Set(allFilePaths)` in an ADAPTER" -- the bug #1918 shipped -- and
named the unit parity test as the guard. It is not: that test imports the
resolvers directly, while production reaches them through
`<lang>ScopeResolver.resolveImportTarget`. Inserting the copy at
`go/scope-resolver.ts:31`, `csharp:35`, `dart:189` and `ruby:268` left the
parity test 28/28 green and `measure.mjs --check` PASS in all four cases.
Kotlin and Python already had adapter-level guards; go/csharp/dart/ruby
had none.

Add `test/integration/<lang>-import-index-reuse.test.ts` for the four,
mirroring the Kotlin/Python precedent: resolve through the scope resolver,
assert the file set is traversed once (twice for C#, which builds two
indexes), and pair every count with a result assertion so a count of 1
cannot be the count of an adapter that resolves nothing. Each was proven
to fail under the copy it exists to catch:

  go     expected 600 to be 1     dart   expected 600 to be 1
  ruby   expected 400 to be 1     csharp expected 600 to be 2

`CountingSet` moves to `test/helpers/counting-file-set.ts` and now counts
`forEach`, `values`, `keys` and `entries` as well as `[Symbol.iterator]`.
It missed a rescan spelled `allFilePaths.forEach(...)` entirely; with the
overrides that mutation reads 14 instead of 1.

Four fixtures that pinned the guard next door, each now shown to kill its
mutation:
- the Dart "matched RAW" case used a forward-slash target, so the basename
  bucket missed before the raw comparison was reached and it asserted
  `null === null`. A positive twin carrying the backslash in the TARGET
  catches both half-mutations.
- no C# or Ruby target addressed the corpus's `win\dir\thing` file, so
  deleting the backslash normalization in `workspace-file-index.ts` passed
  both gates. Now 4 failures.
- `normToRaw`'s first-wins rule had no normalization twin in any corpus.
- the Go nested-package fixture was decided by the `endsWith` half and
  never reached the first-occurrence branch its title names; addressing
  the directory as a single segment makes it reach it.

The parity test's own docstring no longer claims the scan count is a
complete census -- it names the three materialized arrays it cannot see.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013rLy781K8E3rRHFGEe1khJ

* test(import-target): assert every scale, add collide and retained-heap arms

Three holes in the gate this PR ships as its own proof.

1. `--check` computed three fingerprints per language, stored all three,
   and compared one. `DEEP_PAD = 16 -> 0` deleted the entire depth arm and
   still printed PASS, because depth padding is count-neutral by design so
   no asserted number moved. Assert `fingerprint` per scale, and assert
   `deep.fingerprint !== small.fingerprint` so the padding's EFFECT is
   pinned, not just its output.

2. The corpus minted per-index directory names (`src/pkg${d}`,
   `src/Ns${d}`, `lib/feature${d}`), so max last-segment bucket and max
   matching dirs were both 1 -- and bucket cardinality is the only
   non-constant term the index has. The `dirCount > 1` merge branch had
   never executed in any arm. Add a `collide` arm on shared-leaf layouts
   with identical files/imports/resolved counts; it reaches 9,269
   multi-directory merges per run, up to 34 directories at once. Go and
   C#/Dart legitimately score above the linear budget there and get their
   own; Ruby and Kotlin stay at 1.8 because their keyed maps are
   collision-immune and that immunity is the assertion.

3. No arm measured memory, while the C# no-csproj leg newly retains an
   O(files x depth) suffix index. Add a retained-heap arm on the
   `bench/cfg` pattern, including its loud failure when `--expose-gc` is
   missing rather than a silent skip. Measured at 32k files:
   csharp 73.62 MiB, ruby 55.26 MiB. Ceiling is 1.5x, NOT the 4x the
   timing arms use -- the measurement is byte-stable to 0.00085% across
   processes, so 4x would be throwing away the gate. `_arms_note` records
   why, so nobody harmonises it back.

`depth_ratio`, added by this PR, flaked ~1-in-20: go peaked at 1.748 and
dart at 2.043 against a 1.6 budget, both ratios of two sub-3 ms minima.
Fixed at the estimator, not the threshold -- REPS 5 -> 15, matching
`bench/cfg`, `schema-pairs` and `callable-value-flow` (5 was the lowest in
the repo; the sibling `kotlin-import-target` uses 7, which was not enough
here). 22/22 PASS, every arm now at 70-78% of its budget with a <=1.26x
swing. No budget was widened; the distributions are recorded in
`_arms_note` so the headroom is visibly earned.

Three copies of the same overclaim corrected: the parity test NARROWS the
1-in-32 blind spot, it does not close it -- it watches the Set while the
resolvers hold materialized arrays. `_floor` no longer claims its ratios
"match" the issues' (different corpora, both quadratic).

The step moves to the END of the benchmarks job and runs with
`--expose-gc`. A failing step aborts every step after it (#2895), so the
newest, least-proven gate must not sit ahead of eight established ones.

All five output fingerprints are byte-identical to before this session --
the proof that every change here was behaviour-preserving.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013rLy781K8E3rRHFGEe1khJ

* docs(import-target): point the reuse contract at the guard that guards it

`workspace-file-index.ts` told callers the unit parity test guards the
adapter-copy hazard. It does not -- it never crosses the adapter. Name
both layers and say which catches what: the per-language
`test/integration/<lang>-import-index-reuse.test.ts` files at the adapter
boundary, the parity test for a rescan reintroduced inside a resolver.

The C# namespace-dir index comment named `findDirectChild`, which this PR
deleted; it feeds `firstFileDirectlyInPkgDir` now.

Drop `GoResolveContext`, dead since the legacy call-resolution DAG was
removed in #942 -- zero importers, and `gitnexus`'s package.json declares
no `main`, `exports` or `types`, so it is not a published surface.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013rLy781K8E3rRHFGEe1khJ

* refactor(import-target): quality pass over the review-round changes

Four cleanup lanes (reuse / simplification / efficiency / altitude) over the
previous four commits. No behaviour change anywhere: all 25 bench cells
(5 languages x 5 arms) are byte-identical on files, imports, resolved,
distinct_outcomes and fingerprint, re-verified after each individual edit.

**Restores a fast path the last commit lost.** Fixing the O(k^2) accumulator
made the SINGLE-directory case — the overwhelmingly common one — copy the
bucket where the original aliased it: measured 1.11x slower at 4 files/dir
rising to 1.72x at 128. Holding the first bucket by reference and promoting to
an accumulator only when a second directory appears is 0.65-0.97x of the
previous code at dirCount=1 and parity at dirCount=64. 176-case differential,
0 divergences.

**`sortedRootFiles` accessor.** `rootFiles` was the only index container read
directly from outside the module. `readonly` is erased at runtime and
`Array.isArray` widens it back, so the copy rule now lives with the code that
owns the invariant instead of at the call site. No `Object.freeze`: V8's
PACKED_FROZEN_ELEMENTS read cost lands on the hot `matchingDirs` path.

**One shared arm for the four reuse guards.** The distinct-file-set test was
copy-pasted four ways, 33-38 identical lines each, and this repo's own helpers
(`mini-repo.ts`, `scope-model.ts`) document extracting at the SECOND verbatim
consumer. `expectDistinctFileSetsGetOwnIndex` takes what actually varies; its
`expected` type excludes `null` so the pairing rule cannot be reinstated as a
hole. The per-language first and third arms stay duplicated on purpose —
corpora and payload shapes genuinely differ. Re-proven: all four still fail
under an adapter-inserted `new Set(allFilePaths)`.

**Bench.** `dirsFor` shared by the two functions that must agree on directory
fan-out (they mint and address the same files). `SCALES` derived from the arm
table, so a future arm cannot be measured, printed and silently never asserted.
Five timing checks with one shape collapsed to a table — the trailing sentence
had already drifted into four wordings. `uniqueTarget`/`collideTarget` as flat
functions, mirroring the `uniqueDir`/`collideDir` split rather than nesting a
second axis four ternaries deep. One `identityPass` replaces two untimed full
resolution passes per cell: -371 ms median.

**CI step moved back where it belongs.** It was parked last "until #2895
lands", but that reasoning was backwards twice over: the flake that motivated
it was fixed at the estimator in the previous commit, and #2895's own audit
measured the last slot as executing zero times in 13 runs. It sits with the
other resolver-index guards; #2899 carries the `if: !cancelled()` that fixes
step masking for every step at once.

Filed rather than fixed here: #2908 (java and cobol still scan the workspace
per import, same shape as #2877-#2880, neither memoized), #2909 (make index
reuse a contract test over SCOPE_RESOLVERS on one instrument).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Co58j4au9JLf8dmJpwdF9B

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-09 09:59:37 +01:00
glier
c6b24162d9
perf(kotlin): index import resolution instead of scanning per import (#2872)
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* perf(kotlin): index import resolution instead of scanning per import

`resolveKotlinImportTarget` walked the entire workspace on every import.
Its four tiers — exact/suffix, directory child, package fan-out and
progressive prefix strip — each ran `for (const raw of allFilePaths)` with a
`replace(/\\/g, '/')` and several string scans per entry, and they are tried
in cascade, so one unresolved import cost two to four full passes.

Across a repository with tens of thousands of Kotlin files that is
O(imports x files): on the order of 10^10 string operations on a single
thread. It does not look like a hot loop from the outside - analyze sits at
exactly 1.00 core with a completely flat heap and emits nothing for hours,
because every allocation is a short-lived string and nothing accumulates to
hint at progress. Small repositories hide it entirely: at a few hundred files
each pass is free.

Three maps, built once per `allFilePaths` Set and memoized on its identity,
make each tier O(1): stem -> path for the exact tier, every component-suffix
of the stem for the suffix tier, and directory -> direct children for both the
fan-out and the first-child fallback. Cost becomes O(files) once plus O(1) per
import. This mirrors the existing Python index (`getPythonFileIndex`), down to
the WeakMap keying and the build counter.

Semantics are unchanged, including the parts the scans expressed only through
iteration order:

  - an exact match anywhere beats a suffix match found earlier, because the
    scan returned on the first exact hit but merely remembered the first
    suffix hit;
  - "first match" stays first in set-iteration order, so both stem maps keep
    the earliest path inserted for a key;
  - a directory-name match still honours the scan's `startsWith`-then-`indexOf`
    rule, which only ever considered the FIRST occurrence of `/dir/`. A path
    like `data/src/main/kotlin/com/example/data/Repo.kt` is therefore still
    NOT a child of `data`. That is arguably wrong, but fixing it here would
    silently move edges in every Kotlin repository; it belongs in its own
    change with its own fixtures.

That claim is gated, not asserted. `bench/kotlin-import-target` fingerprints
every `fromFile | targetRaw -> result` triple over an exhaustive branch matrix
plus a deterministic fuzz, each file set resolved in BOTH iteration orders
because that is the only place the tie-breaks above are expressed. The
committed baseline is the value the PRE-INDEX implementation produces: both
implementations print
5ad605c179081505705ff7698a09dbdbdc4831080af6d9fdec5499cc6bce28ee over the same
20074 cases, 11612 of them non-null, and anyone can re-run it by pointing the
harness's module specifier at the old file.

Its second arm is the scaling ratio, `(t_large/t_small)/(1600/400)` over a
synthetic Kotlin monorepo whose imports are ~40% unresolvable — only a miss
drives all four tiers, which is where the scan was worst. The index measures
0.99 (8.0 ms / 31.7 ms); the implementation it replaces measures 3.737
(2207.8 ms / 33003.5 ms) on that same corpus, so the budget of 1.6 separates
them by a wide margin. Take the absolute times as an order of magnitude only
(~276x, ~1041x): the floor arm was run once cold because best-of-seven against
a quadratic implementation costs minutes, while the index arm is the usual
best-of-seven. The ratios are the comparable pair. Both arms run in the
existing always-on `benchmarks (GITNEXUS_BENCH)` job, next to the C++ guard
from #2788 and the Python one from #1918.

Two unit-level guards sit alongside it: a parity test pinning the curated
cases, and an integration test asserting the index is built once across many
imports — the adapter must pass the Set through, since a defensive copy would
hand a fresh WeakMap key per call and restore the old behaviour (the same trap
Python hit in PR #1918).

Two other providers have the same defect and are left alone here, having no
repository at hand to verify a change against:

  - `go/import-target.ts`: `findRootPackageFiles` and `findAllFilesInPkgDir`
    scan unmemoized, and the GOPATH fallback calls the latter once per path
    segment but the last, so a single import can trigger several full passes;
  - `dart/import-target.ts`: the `package:` branch scans once per candidate
    path — `lib/<rel>` and bare `<rel>` — and `resolveRelative` scans again in
    its suffix fallback, also unmemoized.

`csharp/import-target.ts` is a partial case worth noting: it already builds a
memoized `getWorkspaceFileIndex`, but that is reached only when a `.csproj` is
found; the no-csproj path hands the raw Set to `resolveDirectMatch` and
`resolveByProgressiveStripping`, which scan past it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(kotlin): close the blind axes in the import-resolution gate

Review of #2872 found the weak part was the gate, not the resolver: four
plausible follow-up mutations passed `--check` with a byte-identical
fingerprint, `cases` AND `non_null`. Each is now caught, and each was
re-checked against the mutation it exists to stop.

  - The hashed record carried `order | fromFile | targetRaw | result` but not
    the FILE SET, so a corpus edit that swapped the workspace under a case
    while leaving its result string alone was invisible. Leaving the resolver
    untouched and editing only the corpus, two documented load-bearing cases
    could be gutted — the "exact beats an earlier suffix" case losing its
    competing file, the repeated-directory negative case losing its file
    entirely — with the gate green. The file set is now part of the record, and
    that same edit now moves the fingerprint.
  - The corpus capped path depth at 8 components and packages at 16 files,
    which are precisely the two axes the loops this change added run on. It now
    carries 11- and 13-component paths, queries against suffix keys deeper than
    seven segments, a 40-file package, and a fuzz that spans both. Verified:
    capping suffix-key depth at 7, skipping the `dirChildren` suffix loop above
    depth 8, and capping a bucket at 17 entries each now move the fingerprint,
    where all three previously passed.
  - `non_null` was reported but never asserted; it is asserted beside `cases`.
    That closes only the "resolves nothing at all" hole — it stayed 11612 under
    all three code mutations above and under the corpus edit — so it is a
    companion to the two fixes above, not a substitute for either.
  - A ratio cannot see a constant factor, and a file-count ratio cannot see a
    depth cost. `--check` now also asserts a DEPTH ratio (file count fixed,
    paths 24 components against 8) and an absolute ceiling on the small arm: a
    full workspace scan reintroduced on 1-in-32 imports scores 1.490, inside
    the scaling budget, while running 2.8x slower.

The baseline is re-derived, not adjusted: the pre-index implementation and the
index both print
ebf1790bf1d42dad483a51f2cbdeb2351e493b9e8236e4eedeef592dd81e2c5c over the new
20106-case corpus, 13256 of them non-null.

Both test suites were shown to be non-load-bearing and now are:

  - the parity test's repeated-directory case put `data` at the LEADING
    segment, so the `startsWith` guard fired and the `indexOf` rule its own
    comment describes was never reached — a resolver with that check relaxed to
    `>= 0` passed all 18 cases. A mid-path case now pins it, and a backslash
    fan-out case pins `norm.lastIndexOf` against `raw.lastIndexOf`, which was
    also bench-only. Both mutations now fail the unit suite.
  - the index-reuse test discarded all 200 return values, so a build count of 1
    was equally true of an adapter that had stopped resolving anything. It now
    asserts results, and its docstring premise is corrected: every one of its
    imports hit the tier-1 suffix lookup and none reached the fan-out it
    claimed to exercise. Half now genuinely do. The `undefined as never` casts
    and the `?.` are gone — both trailing parameters are optional and the
    member is required.

Resolver changes, all output-identical against the differential above:

  - `dirChildren` buckets are frozen once built. `findKotlinPackageFiles` hands
    a bucket straight out of the index, and the `readonly string[]` return type
    does not survive the caller: the finalize pass normalizes with
    `Array.isArray(t) ? t : [t]`, and `isArray`'s `arg is any[]` predicate
    widens the true branch, so `tsc --strict` accepts a `.sort()` there. A
    downstream sort would permanently reorder the cached bucket and flip the
    first-child tier for every later import in the run.
  - `stripped` is computed only after tier 1 misses, with `lastIndexOf`/`slice`
    instead of `split`/`slice`/`join`. Measured -20% small arm, -21% large arm.
  - `KOTLIN_EXTENSIONS` now comes from the existing `import-resolvers/jvm.ts`
    export instead of a fourth inlined copy.
  - A note on why the shared `buildSuffixIndex` is not reused, with the four
    probes that diverge, and the measured basename-bucket comparison — the one
    place this was less documented than the Python precedent it follows, and
    the question the Go/Dart/C# follow-ups will each face.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-08 09:31:39 +00:00
DuduPhudu
223ac7010d
feat: close reported graph blind spots in reference resolution, analyze and storage (#2856)
* fix(mcp): report UNKNOWN risk when an upstream impact walk finds no callers

`risk: LOW` asserts "safe to change" — a claim ABOUT callers. An upstream
walk that resolved none has nothing to base it on: the symbol may be
genuinely unused, or reached only through a reference class the index does
not record (a property access on a plain object, a bare-identifier read of a
module-scope const). Seeding LOW from an empty result is the false-safe
signal `anyKnownRisk` already refuses to emit on the ambiguous-candidate
path, and that #2687 removed by making an undetermined impactedCount `null`
rather than `0`.

Zero-caller upstream results now report risk UNKNOWN with a riskNote saying
absence of edges is not evidence of disuse. Downstream is untouched: an
empty downstream walk reports resolved callees, not safety.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(javascript): emit ACCESSES for bare-identifier reads of module-scope consts

A constant read only as a bare identifier — `Math.max(LIMIT, n)`, a default
parameter value, `return LIMIT` — minted no reference site at all, because
JS captured only `@reference.read.member`, which requires a receiver a bare
identifier does not have. So "who uses this constant?", the question behind
every dead-code trim and constants refactor, answered with a confident zero
in both directions.

The rest of the machinery was already in place: `FIELD_KINDS` accepts
`Const`, the scope query already declares it via `@declaration.const`, and
`read` maps to ACCESSES for any resolved target. This adds the missing
capture in VALUE POSITIONS ONLY (call arguments, default-parameter values,
return statements) — a blanket `(identifier)` rule would mint a site for
every token in the file, which is unaffordable at repo scale and would keep
alive the block-local symbols `pruneLocalSymbols` exists to drop.

Cross-file readers are NOT yet covered: the site exists and a call through
the same import statement resolves, but a value-kind def does not link
across the import edge. Recorded as a todo with the investigation.

PARSE_CACHE_VERSION bumped 44 -> 45: this is parse-time capture emission, so
a warm cache replays the pre-change capture set and the new edges never
appear — observed directly, a full `analyze --force` produced a
byte-identical graph until the cache was cleared by hand.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(javascript): pin A1/A5 plain-object property acceptance criteria

Fixture plus todo specs for the four shapes plain-object property access has
to answer: object-literal keys indexed as Property nodes, a read through the
holding variable, a property WRITE, and a read through an untyped param.

Records the investigation so the work is resumable: the parse-query pattern
scoped to literals bound to a variable matches correctly (verified against
the raw JAVASCRIPT_QUERIES), but no Property node reaches the graph and
local-symbol-pruner is not the cause — it drops only Const/Variable/Static.
The remaining gate is in the parse worker's node-creation path.

No production code — specs only, so the suite stays green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(javascript): index object-literal keys of a named object as Property nodes

Idiomatic JS models configuration as an object literal, not a class, but
Property definition nodes existed only for DECLARED CLASS FIELDS. A config
field therefore had no symbol at all: `context({name: 'exitMinAtrMult'})`
answered "not found" for a field read and written throughout a live code
path, and ACCESSES had no target to point at.

Both halves are added for keys of a literal BOUND TO A VARIABLE — the parse
query mints the graph node, the scope query mints the def the resolver can
aim at. Unbound literals are deliberately excluded: an inline call argument
or a JSX prop bag is call-site data, not a named surface other code
references, so a node per key there would add volume without adding an
answerable question.

This lands the definition-node half only. The ACCESSES edges still require
receiver resolution — typing the const that holds the literal to the
literal's scope for the precise case, and name-based matching at reduced
confidence for the untyped-param (option bag) case. Both are recorded as
todos with the mechanism each needs.

Also records a trap that cost a wrong conclusion: under vitest the parse
worker runs the BUILT dist code (parse-impl resolves parse-worker.js, absent
under src/, and falls back to dist), so parse-query changes are invisible to
tests until `npm run build`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(cache): move the SCHEMA_BUMP pin to 45

The pin is the guard that makes two branches claiming one cache-schema
number fail loudly instead of silently serving each other's entries, so a
bump is only half-done until the pin moves with it. The bump itself landed
with the JavaScript bare-identifier captures; this is the other half.

Caught by the guard working exactly as designed — the suite failed with
"expected 45 to be 44" rather than letting a mismatched pair through.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): resolve plain-object property access by unique name

Idiomatic JS reads configuration off an object whose receiver cannot be
typed — an options bag passed as a parameter, a destructured handle, an
imported literal. No precise pass resolves those, so a field read and
written across a live code path produced no ACCESSES edge at all and "who
reads this setting?" answered a confident zero.

A last-resort pass runs after every precise pass and sees only what they
left behind. For each still-unresolved read/write site it asks whether
exactly ONE Property in the workspace carries that name. If so the read
almost certainly means it. If two or more do, nothing is emitted and the
site is COUNTED as ambiguous — a guess between them would be a coin flip,
and a wrong edge in the pre-edit safety gate is worse than a missing one.

Uniqueness is the right gate because it recovers exactly the names worth
recovering: distinctive domain fields (exitMinAtrMult, bookNotionalUsdt)
are unique in a repo and resolve, while generic keys (id, name, data) are
not and are skipped — which is where name matching would over-connect.

Bounded four ways:
- Confidence 0.5, the global tier, with the inference named in the reason,
  so a consumer can filter inferences without losing scope-resolved edges.
- Never second-guesses a precise result: sites already resolved are
  excluded, because first-write-wins stops a duplicate but NOT a second
  edge to a different target.
- Honors `fieldFallbackOnMethodLookup`. A statically-typed language opts
  out of name matching precisely because it over-connects; inferring an
  ACCESSES edge by name is the same claim and must obey the same opt-out.
- Requires an explicit receiver — a bare identifier is not a property
  access, and matching one by name would link a local to an unrelated key.

Indexes graph nodes rather than scope defs because an object-literal key
mints a Property NODE but no scope-resolution DEF: `localDefs` and
`scope.bindings` are both empty for exactly the population this serves.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(analyze): record a collapsed graph write instead of reporting fresh

The dangerous half of a broken refresh: metadata IS written, so the index
reads as fresh, hooks re-arm, and every tool answers from a graph missing
most of its edges — indistinguishable from a codebase that genuinely has no
such relationships. Reported in the field as edges collapsing 23009 -> 2170
and as a CodeRelation table that never materialized.

`analyze` now compares the relationship count the pipeline PRODUCED against
what the DB hands back after the write. Both numbers are already in scope at
the same point, so the shortfall is provable rather than inferred — no
comparison against the previous index, which cannot distinguish a failed
write from a repo that legitimately shrank. A missing relation table needs
no special case: it reads back as a persisted count of zero.

On a collapse the run records `graphWriteCollapsed` in metadata, which
`getIndexIncompleteReasons` turns into `graph-write-collapsed` so status and
the MCP resources report the index INCOMPLETE rather than fresh.

A ratio, not equality: some relationship types do not round-trip one-for-one
and `--pdg` writes MORE rows into the same table, so demanding equality
would fire on healthy runs. Only a collapse is a defect. Fail-safe when the
expected count is unavailable — an implementation that offloads
relationships out of memory may not be able to report a total, and a false
"your index is broken" is worse than a missed one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(ingestion): qualify object-literal Property ids by their owning object

Two config objects in one file that share a key name generated the same
`Property:<file>:<key>` id and COLLAPSED INTO ONE node, so two distinct
settings became a single symbol. Worse, the merged name then looked
workspace-unique to name inference, which happily resolved reads of it to a
node representing both — a wrong edge in the pre-edit safety gate, which is
precisely what the unique-name pass is bounded to avoid.

`objectLiteralOwnerInfo` already existed for exactly this ("so two
constructors in one file that both define `bar` stay distinct nodes") but
was gated to `Method`. `Property` now opts in.

`findObjectLiteralBindingInfo` returns `ownerName` only when asked. Its
`Method` ids must stay byte-identical — qualifying them would rewrite every
object-literal method id in every indexed repo — while object-literal KEYS,
indexed only since A1/A5, have no such history to preserve.

Found by a test written for the ambiguity path rather than by review: the
suite reported one node where two were expected, and an edge where none
should exist. Both are now pinned, along with the detection boundaries of
the B2 collapse check, which was previously an untestable inline expression
and is now a pure function.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(typescript): index type aliases and shape members as symbols

A TS frontend models its API contracts as `type X = { … }` and `interface`,
so a field on one is exactly what "who breaks if I remove this?" is asked
about. Three gaps made that unanswerable, all in the TypeScript queries:

1. No `type_alias_declaration` -> `@definition.type`, so an alias minted NO
   NODE AT ALL and a context() lookup on an exported contract type answered
   "Symbol not found". TypeScript was the ONLY language missing this — Rust
   (type_item), Kotlin (type_alias), Swift (typealias_declaration) and Dart
   all emit it. The alias was declared for scope resolution but never became
   a graph symbol.
2. No `property_signature` in the parse query, so INTERFACE members minted no
   Property nodes either — the upstream report's "class/interface index fine"
   holds only for the type, not its fields.
3. No `property_signature` in the scope query, so even with nodes present the
   resolver had no member declaration to aim at. Its sibling
   `method_signature` -> `@declaration.method` already existed; only
   properties were missing.

Interface bodies and object-type aliases both spell members as
property_signature, so one pattern per query covers both shapes.

Lands the SYMBOLS, not yet the ACCESSES edges: the shape is already a
class-like scope and now has member declarations, but no edge forms — the
remaining link is owner/type-binding, recorded as todos with the diagnosis.
Note TypeScript sets fieldFallbackOnMethodLookup:false, so unlike JavaScript
there is deliberately no name-based fallback here; the precise path is the
only route by design.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(golden): accept interface members in the mini-repo snapshot

Drift is entirely the new TypeScript shape-member indexing: the fixture's
three interfaces (ValidationResult 2, DbRecord 3, LogEntry 3) contribute
exactly 8 Property nodes, each with exactly one HAS_PROPERTY owner edge.

Verified before regenerating rather than after: every pre-existing count is
untouched (CALLS 9, IMPORTS 12, DEFINES 16, HAS_METHOD 1, MEMBER_OF 12,
STEP_IN_PROCESS 12), so nothing was rewired — the digest moved only because
8 edges were added. The fixture's inline `return { valid: false, … }`
literals correctly produced nothing, confirming the object-literal rule
stays scoped to variable-bound literals.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(analyze): never report a collapse from a non-numeric count

The B2 check reported healthy runs as total graph-write collapses. A
non-numeric `expected` (a graph implementation reporting no total, a
lightweight pipeline result) does not skip the guards — it INVERTS them:
`undefined < 100` is false, so the small-repo exemption never fires, and
`0 >= undefined * 0.5` is `0 >= NaN`, also false, so the ratio check
"passes" as well. Both bounds silently evaporate and every such run is
flagged.

That is precisely the failure this check was written to catch, reproduced
inside the check itself: an unmeasurable quantity treated as a measured
zero. Both sides are now validated as finite numbers before any comparison.

`persisted` is also passed as UNKNOWN rather than zero when the DB was not
demonstrably readable: `getLbugStats` flattens "no connection", "query
threw" and "empty table" all into `edges: 0`, so `stats.nodes > 0` is used
as independent evidence the read happened at all.

Caught by the existing run-analyze suites, not by the new unit tests — those
exercised the pure function with well-formed numbers and were blind to the
integration's actual inputs. Both cases are now pinned.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(typescript): make object-type aliases own their members

A TS object-type alias declares the same `property_signature` members as the
interface beside it and answers the same question, but was not a member
owner: its fields were minted with bare ids and no owner edge, so two
aliases in one file sharing a field name collapsed onto one node, while the
identical interface resolved normally.

`type_alias_declaration` joins CLASS_CONTAINER_TYPES (and
CONTAINER_TYPE_TO_LABEL, as that set's invariant requires — a container
missing there gets orphaned member edges or a wrong owner label). Aliases
with no object type (`type Id = string`) declare no members, so they own
nothing and are unaffected.

This also lands the INTERFACE field -> consumer edges, verified on the
mini-repo fixture rather than only on a purpose-built one: `saveToDb` now
links to `ValidationResult.value`, and `formatLogEntry` to `LogEntry.level`
and `LogEntry.message` — three real contract-field reads that previously had
no graph path at all. Golden updated: +3 ACCESSES, no node changes.

The ALIAS field -> consumer edge is still not linked and is recorded as a
todo with the exact blocker: resolving a receiver typed as the alias needs
the NAME to resolve to a class-like def, and `isClassLike` is
Class|Interface|Struct|Record|Enum|Trait. That predicate is read from ~12
sites including MRO and heritage, and every language mints TypeAlias, so
widening it would enrol aliases in linearizations where they do not belong.
Widening only the scope index was tried and reverted — the type-name walkers
gate on it independently, so it fixed nothing and left dead code. That needs
a deliberate "shape-like" concept, not more call-site widening.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(test): record the traced diagnosis for the unlinked alias field edge

Traced to the end rather than left as "needs investigation", so the next
attempt starts from facts:

  1. Graph side is COMPLETE and symmetric with the interface —
     Property:...:LiveModeConfig.bookSlots is owner-qualified and carries
     HAS_PROPERTY.
  2. Resolution DOES reach resolveClassBindingForName('LiveModeConfig')
     (instrumented) and misses.
  3. It misses because the module scope binds LiveModeIface:Interface,
     renderAlias, renderIface — and not LiveModeConfig. The alias has no
     binding on the receiver's scope chain at all.
  4. The TS scope query tags aliases @declaration.type, but normalizeNodeLabel
     accepts only typealias / type_alias and has no "type" case, so it returns
     undefined. Kotlin and Dart use @declaration.type_alias; TypeScript is
     alone on the dead tag.
  5. Retagging is NECESSARY BUT NOT SUFFICIENT — tried, and the binding still
     does not appear, so a second gate exists in how a declaration anchored on
     a node that is ALSO a @scope.class anchor is attached: the alias appears
     to bind inside its own scope rather than hoisting to Module, where
     interface_declaration evidently does hoist.

An isShapeLike predicate (the nominal-vs-structural split: shapes declare
members, nominal types participate in MRO) plus a mirrored
findShapeBindingInScope were built and REVERTED along with the retag. With no
binding on the chain they never fire, and shipping inert widening is worse
than shipping none — the same standard applied to the earlier scope-index
attempt. The design is recorded here; it is worth doing once step 5 is fixed,
and it also unblocks Rust's parked union_item, which the MEMBER_OWNER_NODE_TYPES
comment documents as the same gap in another language.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): resolve cross-file value references, skip block-locals

Two halves of the same question, "who uses this constant?".

CROSS-FILE. `resolveReferenceSites` runs against the registries and, as its
own comment says, "imports live in finalized bindings the registries can't
see" — which is why free CALLS need `emitFreeCallFallback`. Reads had no
counterpart, so `import { LIMIT }` followed by a bare use resolved to nothing
while a CALL through the very same import statement resolved fine. This adds
the read/write counterpart, reusing `findValueBindingInScope` (which walks the
FINALIZED chain) rather than inventing a lookup. Confidence 0.9: the import
names the def, so this is precise resolution, not inference.

BLOCK-LOCALS. Bare-identifier capture also matches a read of a block-local
`const`, and an edge to one keeps alive exactly the inert locals
`pruneLocalSymbols` exists to drop — a pruned node becomes a retained node
plus an edge, in every function of every indexed repo. Emission now takes the
set of value defs bound at MODULE scope and drops ACCESSES to
Const/Variable/Static outside it. The cross-file pass carries the same
guarantee structurally: a def in another file cannot be a block-local of this
one, so it skips same-file hits entirely.

The block-local leak was already shipped in the intra-file A2 commit and was
found only because a test was written for the guard rather than the feature —
the same way the object-literal id collision surfaced.

Verified on the full resolver matrix: 3172 tests, golden unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(lbug): diagnose a vanished staging CSV instead of surfacing a Binder error

A forced rebuild could fail with "COPY failed for File: Binder exception: No
file found that matches the pattern .gitnexus/csv/file.csv" and then an ENOENT
on .gitnexus/csv/rel_Folder_File.csv — two engine-level messages that name
neither a cause nor a remedy, which is where several field reports end.

Only tables with rows > 0 enter the COPY manifest (csv-generator.ts), so an
absent file was WRITTEN during this run and removed since. Both COPY loops now
preflight and say exactly that, with the row count, both causes the reports
point at (a second `gitnexus analyze` on the same repo — they share
.gitnexus/csv — or an external cleanup of .gitnexus/), and the action to take.

Scope note, deliberately narrow: this does not attempt to fix WAL corruption
or checkpoint rotation. Those already have detection and recovery hints
(isWalCorruptionError, WAL_RECOVERY_SUGGESTION, the configurable
wal-checkpoint-threshold), and the ~6000 lines added to lbug/ + storage/ since
v1.6.9 — index-lock.ts most of all, which serializes writers and plausibly
closes the concurrent-run class outright — postdate every report in the
window. Guessing at unreproducible durability faults would be speculation;
making the one failure with NO handling legible is not.

An existing overlap test induced this exact scenario (a manifest entry
pointing at a missing csv) and asserted on the engine's wording. Its intent —
that a node-COPY failure is rethrown at the FK barrier rather than swallowed —
is unchanged and still asserted; only the message it matches moved.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): split shape-like from class-like, linking alias fields

Completes A4: a field on a TypeScript object-type alias now links to the code
that reads it, the last unanswerable half of "who breaks if I remove this?"
for a TS frontend that models contracts as `type X = { … }`.

`isClassLike` answered two questions that only coincide for classes:
  1. does this declare MEMBERS I can look up?   — a SHAPE (structural)
  2. does this participate in inheritance / MRO? — a NOMINAL TYPE
An object-type alias is (1) and emphatically not (2) — it has no supertypes
and no place in a linearization. Widening `isClassLike` to buy (1) would have
enrolled every language's aliases (Rust type_item, Kotlin/Swift/Dart
typealias, C typedef) into MRO and heritage, so the two questions now get two
predicates. Call sites split by which they ask, and their names already said
which: `resolveInheritanceBaseInScope` and `resolveQualifiedInheritanceBase`
keep `isClassLike`; receiver typing and member OWNERSHIP take `isShapeLike`.

Three parts, each necessary and none sufficient alone:
- `findShapeBindingInScope`, mirroring `findValueBindingInScope`'s established
  relationship to `findClassBindingInScope` (same walker, different accepted
  def-type), consulted only AFTER the class lookup misses so a class of the
  same name always wins.
- `populateClassOwnedMembers` uses it, so alias members get an `ownerId` and
  are registered under the alias. Without this the receiver resolved to the
  alias and then found no members under it.
- The TS scope query tags aliases `@declaration.type_alias`, not
  `@declaration.type`: `normalizeNodeLabel` accepts typealias / type_alias and
  has no "type" case, so the old tag mapped to NO label and TypeScript aliases
  produced no scope-resolution def at all. Kotlin and Dart already spelled it
  this way; TypeScript alone was on the dead tag.

An earlier attempt concluded a further "scope-attachment gate" existed. That
was wrong and is worth recording: scope extraction runs in the parse WORKER,
which loads built `dist`, so the retag was never executed. Rebuilt, the alias
hoists to Module scope exactly as the interface does. Same trap as the parse
query — `src` edits to anything the worker runs are invisible until
`npm run build`.

Typedef and Union stay out of `isShapeLike` deliberately: they belong
conceptually (the union_item note on MEMBER_OWNER_NODE_TYPES records the same
gap) but neither is wired as a member container, so including them would widen
a predicate nothing exercises.

Verified on the full resolver matrix: 3173 tests, golden unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(typescript): pin the type-alias capture to a tag that maps to a label

The capture test asserted `@declaration.type`, the tag that
`normalizeNodeLabel` does not recognize (it accepts typealias / type_alias and
has no "type" case). So the test passed for as long as the tag was broken: it
checked only that the capture FIRED, never that it resolved to anything, while
TypeScript aliases produced no scope-resolution def at all.

Updated to the working tag and given a second assertion that the derived kind
string is one the label mapper accepts — the property that actually matters,
and the one whose absence let a dead tag sit pinned.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(lbug): declare TypeAlias member pairs so analyze does not abort

Making object-type aliases member owners emits HAS_PROPERTY from a `TypeAlias`,
and the relation schema declared no such pair. The emit therefore threw
`UndeclaredRelationPairError` and the ENTIRE analyze died on any repo
containing `type X = { ... }` — a hard stop, not a dropped edge. Found by
running the analyzer over a real 16k-node TypeScript repo, not by a test.

`Method` is declared alongside `Property`: a member written
`type Handler = { onClick(): void }` is a method_signature and would fail in
exactly the same way.

Why every existing test missed it: the resolver suites build an in-memory
graph via `runPipelineFromRepo` and never write to LadybugDB, so the schema
constraint was never exercised. `structural-pair-coverage.test.ts` is the one
suite that does run the emitters against the declared pairs — and its own
docstring names the gap: coverage is bounded by NON_BRIDGE_CORPUS, "a new
structural emitter should land with an entry here". This adds that entry,
pinning TypeAlias|Property and Interface|Property as sentinels.

Verified the guard is not vacuous: removing the pair again makes the suite
fail with undeclaredPairs: ["TypeAlias|Property"].

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(processes): trace depth-first so multi-hop flows are detected

D1 ("query ranks frontend components above the backend module that owns the
concept") and D2 ("processes is dominated by trivial mechanical chains") are
the same defect, and neither is about ranking or selection.

The walk stops after a fixed NUMBER of traces, so traversal order decides which
traces those are. Breadth-first reaches every shallow terminal before any deep
one, so the quota filled with the shortest paths in the graph and the walk
stopped — `maxTraceDepth: 10` was never approached. Measured on a real repo
before the fix: of 300 processes NONE exceeded 7 steps and 90% were 3-4. A
multi-hop business flow (signal → order → exit) therefore had no process that
could represent it, and `query` could only rank the mechanical pairs that did
exist. Step 4 of the caller already sorts by length and dedupes by endpoint —
it was always asking for the deepest traces this walk could give it.

Depth-first descends to a terminal first, so the same quota is spent on paths
worth keeping. Cost is unchanged: same budget, same cycle guard, same depth
ceiling — only the order differs.

Measured on the same 16k-node repo, same build and flags, BFS vs DFS (an
earlier comparison was discarded as confounded — it crossed builds and --pdg):

  steps   6-8:  50 → 168   (3.4x)
  totals:      844 → 806

and the reported query moved from `LiveSetupView → Cn` (a React component) to
`ReconcilePositions → IsTpInProfit / WithHeld / ShouldNotify` — server-side
exit management, which is what was asked for.

`traceFromEntryPoint` is exported for the test. Traversal order is unobservable
through `processProcesses`: `findEntryPoints` supplies several starting points,
so a deep chain is traced from inside it whatever the order does. A test at
that level passes under BOTH traversals — the first version of this test did
exactly that and guarded nothing. Driving the walk directly, it fails under
breadth-first with "expected 3 to be greater than 3".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(test): correct a stale status note left behind by a later fix

The A1/A5 header still said "edge resolution REMAINING ... neither is
implemented". Both shapes resolve — the typeable receiver precisely, the
untyped one by workspace-unique name — and the tests below assert exactly that,
so the note contradicted the file it sat on.

It was accurate when written and went stale when the work continued past it.
Left as-is it would tell a reviewer that a landed feature is missing.

The TRAP note is kept: the parse worker still runs built dist under vitest, and
that is still the trap it describes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): index literals behind identity-preserving wrappers

`export const INERT_EXIT_CONTRACT = Object.freeze({ ... })` minted no
`Property` node for any of its keys. The object-literal rule matches
`variable_declarator > value: (object)` as a DIRECT child, and freezing puts a
call expression in between — so the shape whose fields are most worth querying
was the one shape the rule could not see. Freezing a config object is how JS
publishes an immutable contract, which is why this reads as a confident zero
on exactly the fields a reader cares about.

The allowlist is three functions, not "any call". `Object.freeze`, `seal` and
`preventExtensions` RETURN THE ARGUMENT THEY WERE GIVEN, which is what makes
the literal's keys members of the bound name. For `const x = compute({ a: 1 })`
the literal is an argument and `x` holds compute's return value, so attributing
`a` to `x` would be a fabrication.

Two negative controls, because the obvious one is vacuous: a bare-identifier
callee is rejected structurally and would pass with no allowlist at all, so the
assertion that actually pins the predicate uses `Object.entries` — identical
shape, differing only by name. Verified load-bearing by adding `entries` to the
allowlist and watching that test alone fail.

SCHEMA_BUMP 46 -> 47: parse-time emission, so a warm cache replays the pre-fix
capture set. Observed as a false negative first — `analyze --force` returned
the old node set until the on-disk cache was removed by hand.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): narrow multi-candidate property names by scope

Workspace uniqueness was the wrong denominator. Measured on the reporting
repo: `exitMinAtrMult` has 26 `Property` definitions — 16 in one-off
`scripts/`, 7 in the frontend, one in a test, and exactly ONE in the backend
that reads it. Every backend read was refused because of competitors the
reader cannot see. The gate was not too permissive or too strict, it was
scope-blind.

A name with several definitions is now narrowed before being abandoned:
same-file first, then files the reading file directly imports, using the
finalized import graph rather than a path-shape heuristic. Exactly one
survivor at the first non-empty tier resolves; anything else stays refused.
A tier holding several candidates stops the walk instead of falling through —
local evidence that is itself ambiguous still contradicts reaching further out.

Confidence stays 0.5 at every tier. Narrowing changes which candidate is
chosen, not the kind of claim: it is still a name match, and the round-1
contract is that filtering on confidence drops all name inference at once.
The reason string now names the tier that fired.

Ambiguity reporting goes from a count to the actual names (capped), because a
count says a gap exists while the names say which fields are unanswerable.

Measured on that repo, backend readers of `exitMinAtrMult` go 0 -> 24 and
total readers 9 -> 45, including the two call sites in
`oppositeSignalExitManager.js` the report singled out. Both narrowing tests
were mutation-checked by dropping the import evidence and confirming they, and
only they, fail.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): capture destructured parameter keys as property reads

`function exit({ exitMinAtrMult = 0 })` reads that property off whatever the
caller passes, exactly as `cfg.exitMinAtrMult` would. It never appears in a
member_expression, so it had no reference site at all — and this is the shape
the function that IMPLEMENTS a behaviour uses, so the most relevant reader was
the one systematically missing from "who reads this setting?".

Uses a distinct `@reference.read.destructured` anchor rather than
`@reference.read.member`. The latter is filtered emit-side to matches with a
member_expression ancestor, because calls and writes share its shape, and a
destructuring pattern has none — reusing the tag would have been silently
dropped by that filter. The `read.` head already maps to a read kind, so no
mapping change is needed.

Scoped to formal_parameters. A destructuring binding elsewhere
(`const { x } = require('m')`) is frequently an import rather than a field
read, and minting a property read there would attribute module bindings to
unrelated same-named keys.

All three cases (default value, bare shorthand, renamed key) mutation-checked
by removing the patterns and confirming those three tests, and only those,
fail. The renamed case also asserts the edge points at the KEY and that the
local alias mints nothing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): link type consumers to the type they name

An exported contract type owned its members after round 1 and still answered
`incoming: {}`, so "what breaks if I remove this field?" — the question a
contract type exists to answer — had no edge to walk. Measured on the
reporting repo: all 324 TypeAlias nodes AND every Interface node had DEFINES
as their only incoming edge.

Two independent causes, and the second is why the first was not enough.

TypeScript captured no type references at all — only cpp and csharp did — so
an annotation naming a declared type minted no reference site. Added for
annotations, generic arguments and `as` assertions, anchored to those contexts
rather than a bare `(type_identifier)`, which would also match the name in
`type X = …` and make every declaration a consumer of itself.

That alone fixed interfaces and left aliases still empty. `TypeAlias` was
missing from `LINKABLE_LABELS`, so alias graph nodes were never indexed in
`nodeLookup` and `resolveDefGraphId` could not bridge a def to its node — the
edge was dropped AFTER a successful lookup. `CLASS_KINDS` has always listed
TypeAlias and the ClassRegistry returned the def correctly, which is what made
this read as a resolution failure; instrumenting the lookup showed it
returning the right def all along and moved the search one table over. Exactly
the bug already documented two entries above it for Trait.

Fixes every language that spells an alias this way — TypeScript, Kotlin, Dart
and Rust all emit `@declaration.type_alias`.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): capture record construction as property writes

The read side answered well after the narrowing work while "who SETS this
field?" still missed the code that stamps the value. A record built inline —
`return { exitContract: { exitMinAtrMult: settings.x } }` — is bound to no
variable, so it minted no definition and its keys referenced nothing.

Modelled as WRITE REFERENCES, deliberately not definitions. The round-1 rule
already mints Property nodes for literals bound to a variable; minting more for
anonymous records would add same-named competitors to the very name-narrowing
that makes these fields resolvable — measured at 26 competing definitions for
one field on the reporting repo, which is what made every backend read
unanswerable in the first place. A construction site is a USE of a field, not
another declaration of it.

Two positions only: nested under a key, and returned. Both are records with a
name attached (the key, or the function). An inline call argument
(`doThing({ id: 1 })`) stays excluded for the same reason round 1 excluded it
from definitions — it is call-site data, not a named surface — and is asserted
as such.

The enclosing literal is the receiver and it is anonymous, so these route
through the same narrowing and the same refusal-to-guess as every other
untyped receiver.

Verified on the reporting repo: `entryPlan.js` went from no rows to
`selectExitEnvelope` as a writer of `exitMinAtrMult`. Both captures
mutation-checked.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(processes): select round-robin by terminal so the list is not one flow repeated

Ranking was `sort by length` alone, so the top of the list was one behaviour
described many ways: eleven of the top fourteen processes on the reporting
repo were four entry points crossed with three terminals of the SAME
date-window utility cluster. Genuine call chains, but a reader learns one
thing from fourteen entries, and the repo's own domain flows sat below them.

Selection now round-robins across TERMINALS, deepest first. Depth still orders
within a terminal and still leads the list; what changes is that no terminal
takes a second slot until every other has had a first.

Keying on the entry point was tried first and made it worse — many files
declare a `main`, so each was a distinct entry that round-robin then awarded
its own slot, and `Main -> AlignWindowEnd` went from one row to eight. The
repetition was never in where a flow starts.

Measured on that repo: distinct terminals in the top 20 went 3 -> 20, and its
domain flows (`ReconcilePositions -> ...`) moved into the top 4%.

Two things this deliberately does not claim. The reported cause — ranking
rewarding fan-in, promoting chains ending in widely-called helpers — measured
FALSE: those terminals have one caller each (`alignWindowStart` 1,
`validateSymbol` 1). A fan-in discount was implemented against that hypothesis,
measured, and reverted for moving nothing. And a business flow still cannot be
a process in its own right: the walk only emits at a leaf, at max depth, or on
a cycle, so a flow whose meaningful endpoint calls onward survives only as
whatever leaf it bottoms out in. Both are recorded in the code so neither
reads as settled.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(structural-pairs): pin the type-annotation USES pair

R2-2 emits USES INTO a `TypeAlias`, so the pair is `Function|TypeAlias` — a
different table from the `TypeAlias|Property` entry added in round 1, and one
that entry stays green without. `TypeAlias` is on the eleven-table list this
suite exists for, and an undeclared pair does not degrade: it throws
`UndeclaredRelationPairError` and kills the entire analyze on any repo
containing an annotated type. Every resolver suite still passes, because they
build an in-memory graph and never write to the DB.

That exact failure shipped once in this PR already. Two emitters into the same
label, each with its own way to reach a released build.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): build the module-level set before the out-of-core seal

Review blocker. Under `GITNEXUS_DISK_SCOPE_INDEX=1` the seal replaces every
ParsedFile with a scope-STRIPPED copy, and the block-local filter's set was
built after it — so it walked `scopes: []` for every file, came out empty, and
the filter read that as "no def is module-level" and dropped EVERY
`Const`/`Variable`/`Static` ACCESSES edge in the repo. All languages, all
files, including the module-scope-const edges this PR exists to add. Nothing
threw and nothing logged, on the path the largest repos take: the exact
confident-empty answer the PR is about.

Built above the seal now, from `parsedFiles`, and passed as `undefined` rather
than an empty set when no scope was inspectable — an empty set is a legitimate
answer ("this repo has no module-level value defs") and must not be
indistinguishable from "could not look". Fails open; the block-local exclusion
is still asserted under the seal, since that is correctness rather than
optimization.

Also widens module level past `kind === 'Module'`. A `Namespace` scope (TS
`namespace`, Rust `mod`, C++/C# `namespace`) holds importable values too, and
treating its consts as function-locals dropped their reads. Included only when
the whole chain to the root is Module/Namespace, so a namespace declared inside
a function body stays local — asserted both ways.

That fixture then failed for a third reason: `@reference.read.identifier`
existed ONLY in the JavaScript query, so A2 did not work for TypeScript at all.
Added there, and both languages widened to `variable_declarator value:` and
`binary_expression` operands — the gaps review named between what A2 claimed
and what it matched.

Nothing covered `GITNEXUS_DISK_SCOPE_INDEX`. The new parity test asserts the
seal changes no edge, and was verified against an emulation of the original
bug: same-file readers vanish and only the cross-file reader survives.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(typescript): anchor property_signature to declared shapes

Review blocker, and it reproduces end to end. `property_signature` occurs in
EVERY object_type in the TS grammar, not only in an interface body or an
alias's object type, so inline parameter types, inline return types and nested
object types all matched — and the enclosing-container walk hung each one off
the nearest class, interface or alias. Measured against the unanchored rule,
all four appeared as members of shapes that do not have them:

  Property:contracts.ts:Svc.inlineParamOnlyKey
  Property:contracts.ts:Repo.inlineQueryOnlyKey
  Property:contracts.ts:NestedConfig.nestedOnlyKey
  Property:contracts.ts:buildInline.inlineReturnOnlyKey@46:33

When the inline member shares a name with a real one — `run(opts: { retries:
number })` inside a class that declares `retries` — `addNode` is
first-write-wins and the two distinct symbols merge onto one node, so every
context()/impact()/rename() answer about that field describes the merge. The
sibling JS object-literal rule in this same PR is anchored for exactly this
reason; this is the TypeScript half of the same fix.

`(A (B))` matches DIRECT children, so nested object types are excluded by the
same anchor rather than by a second rule.

The first version of these tests was VACUOUS and is recorded here because the
reason generalizes: a collision and a correct exclusion both leave exactly one
node behind, so counting ids cannot distinguish them. Every inline member in
the fixture is now uniquely named, which is the only thing that discriminates —
verified by restoring the unanchored rule and watching exactly those four
assertions fail. A fifth test asserts anchoring costs no real member.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(analyze): correct the numbers feeding the graph-write-collapse guard

Review blocker. The predicate itself held under adversarial probing; every
defect was in what it was handed and what happened after it fired.

(a) `expected` was wrong twice. Under `GraphEmitSink` streaming the bulk types
leave the heap at parse time and never enter `relationshipCount`, so the count
understated the real volume by most of it and the ratio passed trivially —
on `force === true` runs, which include crash recovery AND the
`analyze --force` retry this check's own warning tells the operator to run.
Adds the manifest totals, the same correction the buffer-pool hint in this file
already makes for the same reason. Separately, an incremental run persists only
the changed subgraph while both counts are whole-scope: a 10,000-edge index
that lost 200 replacements reads 9,800 and is certified complete. The check is
skipped on that path rather than answered wrongly.

(b) A throwing edge count became a measured zero. `getLbugStats` initialised
its total to 0 and ran the query in a swallowing catch, so WAL/lock contention
during finalize — documented on this exact call — reported a healthy index as a
total collapse. It now returns `number | undefined`, and the caller requires
both a readable node count and a defined edge count.

(c) A total loss was exempted for being small. The min-edges rule tested
`expected` before looking at `persisted` at all, so `expected = 99,
persisted = 0` — every edge gone — stayed fresh and reported success. Total
loss is now decided first. The existing test asserted the defect; it now
asserts a PARTIAL shortfall, which is the case the exemption was written for.

(d) A detected collapse reported success and exited 0. It is different in kind
from the other incomplete reasons: those describe a run that did what it said
and left work for later, this one means most of your edges are gone and every
query answers a confident empty. The CLI now prints INCOMPLETE with the counts
and sets a non-zero exit code, and the flag crosses IPC so the worker cannot
send a clean `complete` either.

Nothing exercised this wiring — only the pure helper. Adds tests for all four,
each written so the pre-fix arithmetic fails it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): keep unique-name property inference inside one language

The pass indexed `Property` nodes from the whole shared graph. Per-language
gating decides whether it RUNS for a language; it never restricted which nodes
could be TARGETS. So the only carrier of a name could be in another language
entirely, and a read here resolved to it on name uniqueness alone — no owner,
no file, no call path.

Reproduced: a Java class declaring `private int loyaltyPointsBalance` and a JS
`cfg.loyaltyPointsBalance` on an untyped parameter produced an ACCESSES edge
from the JS function to the Java private field. Confidence does not mitigate
it, because `minConfidence` defaults to 0 — the tier is only a filter for
consumers who ask for one.

Candidates are now restricted to files in the language's own `parsedFiles`,
which is a precise restriction rather than a heuristic and needs no new node
property.

Every other fixture in the suite is single-language, so this could not be
caught anywhere by construction. The new fixture is deliberately polyglot and
asserts both halves: no cross-language edge, and a same-language unique name
still resolves.

Known and not addressed here: the index is still O(total graph nodes) and is
rebuilt once per qualifying language, the per-language whole-graph-scan pattern
`phase.ts` hoisted out for `sharedNodeLookup`. Hoisting it belongs with that
machinery rather than in this fix.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(processes): explore siblings in source order, log the exhausted budget

`slice(0, maxBranching)` selected the FIRST N callees while `pop()` explored
them LAST-first, so the trace budget went to the last-declared branch. For
`main() { init(); loadConfig(); run(); shutdown(); }` the walk spends itself on
`shutdown` and can drop `init` — the earliest steps of a flow, which is the
opposite of what a process describes. Selecting first-N and exploring last-first
was simply inconsistent; pushing in reverse makes the stack pop in source order.

Measured on the reporting repo, this costs depth: 6-8 step processes go 168 ->
146 of 816. Still roughly three times the pre-PR baseline of 50, and the right
trade — a deep branch is no longer reached by accident of being declared last.

The remaining limit is the BUDGET, not the traversal: with a fixed quota a deep
branch declared after enough shallow ones is not reached at all. That is now
asserted in both directions rather than left implicit, and the walk logs when it
stops with branches unexplored — a silently truncating cap reads as "this is
everything", the same confident-empty answer this work is about, and the repo
already sets that precedent for `dispatchFanoutSkipped`.

Removes the second depth test, which was vacuous: the note twelve lines above
it already said a `processProcesses`-level depth assertion passes under BOTH
traversals, and measured it does — breadth-first yields the same deepest
stepCount of 8, so it passed with the production change reverted. Traversal
order is asserted against `traceFromEntryPoint` directly; what is observable at
the pipeline level is which traces survive selection, which the diversity tests
cover.

Also renames `queue` to `stack` and corrects the BFS references in the module
docstring and the function's own JSDoc, which is what an IDE hover shows.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(impact): carry riskNote onto ambiguous candidates and separate UNKNOWN's two meanings

Two problems on the ambiguous fan-out, which builds its own candidate object
rather than returning the single-symbol shape.

The narrowed type had no `riskNote` field and never read one, so a candidate
that resolved and found no callers reported `risk: UNKNOWN` with nothing
attached — losing the entire point of the change on the path where the reader
has the least context, since the name is ambiguous there by definition.

And `UNKNOWN` used to mean exactly one thing on this path: the probe threw. The
zero-caller branch gives it a second meaning, so an all-UNKNOWN fan-out could
no longer be told apart from a broken one. Candidates now carry `probeFailed`,
and the comment asserting the old reading is corrected.

Also aligns `gitnexus-web`, which review flagged as giving a different verdict
for the same symbol. That surface answers in prose rather than an enum, and its
message said the symbol "appears to be unused (not called by anything)" — the
identical false certainty in words. It now carries the same MEANING rather than
the same field. Downstream wording is unchanged: no outgoing dependencies
really is a fact about the symbol itself.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test: replace assertions that cannot fail

Four from review, each satisfied by the defect it was meant to catch.

`new Set(props).size === 2` over two different literal strings can only ever
be 2, so it could not detect the node merge its title promises — that is a
difference in COUNT, now asserted on the raw array.

The ambiguity test asserted only an empty edge set, which is satisfied equally
by "the gate fired" and "the name was never looked up". It now also requires
the ambiguity counter to have moved.

`Interface|Property` was listed as a structural-pair sentinel beside
`TypeAlias|Property`, but both its labels are in the SCOPE_BRIDGE cross-product
so the pair is generated by construction and the sentinel cannot fail. Dropped
rather than left reading as coverage; `TypeAlias|Property` is the load-bearing
one.

`TypeAlias|Method` was declared in the schema with no fixture emitting it — a
declared pair no emitter exercises is indistinguishable from a missing one
until an analyze aborts on a real repo. Adds a method-shaped alias member, and
the suite requires sentinels to actually appear, so it is not vacuous.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs: document the new incomplete reason, the UNKNOWN verdict and the id churn

Review found the code changes landed without the guidance around them, and an
agent following this repo's own rules would have been told the wrong thing.

`graph-write-collapsed` joined `INDEX_INCOMPLETE_REASONS` with no Sign block
and no recovery section, while the precedent it cites
(`embedding-checkpoint-pending`) has both — so `gitnexus status` would surface a
new string naming silent wrong answers with nothing explaining trigger or
remedy. Added to RUNBOOK and GUARDRAILS, including why this reason alone also
fails the exit code.

`AGENTS.md` said MUST warn on HIGH or CRITICAL and never mentioned UNKNOWN, and
the shipped impact skill's risk table had no UNKNOWN row and still implied
few-callers ⇒ LOW. An agent obeying those rules literally sees `risk: UNKNOWN`
and proceeds, which negates the change the verdict exists to make. Both copies
of both skills updated.

`MIGRATION.md` now records that process ids do not survive this release —
positional ids plus depth-first tracing, source-order siblings and round-robin
selection mean `proc_7_handle` is a different flow afterwards. Bounded honestly:
nothing in-repo joins on a raw process id, so it is index churn, not a broken
consumer.

`ARCHITECTURE.md`'s scope-resolution stage list gains the two new stages.
The guide skill's node list gains `Property` and `TypeAlias` — the two node
types this work most prominently creates.

Also, on the pair-CSV preflight review asked to confirm: the hard abort IS
deliberate, because a fallback recovering zero rows is the confident-empty
failure this work targets. But the transient the message itself names — a second
concurrent analyze sharing `.gitnexus/csv` — is a race, so the check now
re-looks three times over ~150ms before declaring the file gone. Long enough to
ride out a rename, far too short to mask a file that is genuinely missing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: drop redundant TypeAlias pairs and keep bare identifiers off class members

Two regressions the full suite caught after the review fixes, both real.

`schema-pair-coverage` failed with eleven hand-declared pairs that a rule now
generates. Adding `TypeAlias` to `LINKABLE_LABELS` — needed so
`resolveDefGraphId` can bridge an alias def to its node — also makes it a
SCOPE_BRIDGE source and target, so the cross-product produces `File|TypeAlias`,
`TypeAlias|Property` and nine others that round 1 had declared by hand. Removed;
the invariant is that no pair is both generated and hand-declared.

This also changes what the structural-pair sentinel means, and the comment is
corrected rather than left overstating it: `TypeAlias|Property` is no longer
load-bearing because the label is off the generated grid — it is load-bearing
because it now depends on `TypeAlias` being IN `LINKABLE_LABELS`. Remove it and
the pair stops being generated while the hand declaration is gone, which is the
same state that silently breaks alias consumer edges.

`block-scope-shadowing` failed because a bare identifier resolved to a class
`Property`. `class Box { baseUrl = '...'; pick() { const baseUrl = ...; return
baseUrl; } }` linked the block-local read to `Box.baseUrl`, duplicating the
legitimate `this.baseUrl` edge. A bare identifier is not a member access: with
no receiver there is no object whose property it could be, and in JS/TS a field
read needs `this.`. Receiver-less read/write sites no longer accept `Property`
hits; callables stay reachable, so `cb = save` naming a top-level function is
unaffected.

That defect PREDATES this branch's TypeScript captures — JavaScript has emitted
bare-identifier reads since A2 and no class fixture exercised the shadow. The
TS parity added here is what surfaced it.

Golden snapshot regenerated after verifying the drift line by line: exactly
+5 USES from type annotations in the mini-repo, every pre-existing count
unchanged, so nothing was rewired.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* perf(scope-resolution): share the property-name index across language passes

Review follow-up. `indexPropertyNodesByName` scanned every node in the graph
and was rebuilt inside each qualifying language pass, reintroducing exactly the
pattern `phase.ts` hoisted out for `sharedNodeLookup` — whose comment records
why it matters: "the previous per-language rebuild burned that CPU+heap N times
and, on a huge repo, a tiny language's full-graph copy overlapped the next
language's — a real contributor to the scope-resolution memory peak."

Built once in `phase.ts` beside `sharedNodeLookup` and `sharedFnNodeIndex`, and
threaded through the same `prebuilt*` seam, so tests and isolated calls still
build their own.

Sharing is only safe because the per-language restriction MOVED rather than
disappeared: the shared index is whole-graph, and candidates are filtered to
the language's own files at lookup time. That also fixes a subtlety the
per-language build had backwards — the cap now applies to the FILTERED set, so
a name carried by forty properties across a polyglot monorepo but only two in
the language being resolved is still answerable, where a global cap would have
refused it.

The tri-state at the lookup boundary is deliberate and the three outcomes are
not interchangeable: no property of this name in this language (nothing to say,
and NOT an ambiguity), too many to choose between (reportable), or a list to
narrow.

Caught mid-change by the polyglot fixture: an intermediate state shared the
index without moving the filter, and the cross-language edge came straight
back. That test earning its keep twice is the reason it exists.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): report when a field's only anchor is another language

Round 3, found OUT-OF-SAMPLE — six field names appearing in no prior report, so
nothing here was tuned against them. All six answered 0 backend ACCESSES while
their definitions sat in `apps/research-dashboard/**`: TypeScript only. The
in-sample set scored 5/5 and the out-of-sample set 0/6, and the gap is entirely
this.

Per-language inference (`3c5eadc7`) is right and stays. What was wrong is that
declining is INVISIBLE: an empty result for a field anchored only in TypeScript
is byte-identical to an empty result for a field nobody reads. One says "look
in the other language or grep"; the other says "delete it". That is the same
confident-empty failure this series exists to remove, one surface over — and
this time the missing fact is about the ANALYZER's reach rather than the code.

Declines are now counted and named, with the languages the anchors actually
live in, kept SEPARATE from ambiguity because the remedies differ: ambiguity
wants better receiver typing, this wants an anchor in the reading language.
Collapsing them would tell a reader the wrong thing to do. A non-zero count
warns at analyze time regardless of dev mode.

The facts are published as `PipelineResult.propertyInference`, which they had
to be for any of this to be testable — and that exposed a second defect. The
round-2 ambiguity assertion, which I told the reviewer of #2856 I had
strengthened, read its stat off a `scopeResolution` field that does not exist
on PipelineResult: the `if (undefined) return` guard swallowed it and the test
passed with the production code deleted. Both that assertion and the new ones
now read the published field, and the guard is an assertion rather than an
escape. Verified by deleting the counter and watching them fail.

Reported by the same round-3 method note that caught it: verifying a fix
against the cases it was written for only proves those cases pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(context): explain an empty property result caused by a cross-language anchor

The other half of R3-1. The analyze pass now knows which fields it declined to
link because every definition of the name lives in another language; this puts
that fact where it is actually read.

`context()` on such a field previously returned an incoming list byte-identical
to a genuinely unread field. The two demand opposite actions — "look in the
other language, or grep" versus "delete it" — so the difference has to travel
with the answer:

  unresolved: property reads of this name were NOT linked: every definition of
              it is typescript, and name inference does not cross languages.
              An empty or short incoming list here is not evidence the field is
              unused — confirm with a text search, or give it an anchor in the
              reading language.
  anchorLanguages: ['typescript']

Carried through repo meta because the graph cannot answer it: the unlinked
reads mint no edge and no node, so the only record is the pass that declined
them.

Keyed on the NAME, not on the resolved label. Gating on `=== 'Property'` was
tried first and is wrong — the label reads `''` on this path for a plain
Property node, so the gate silently suppressed the entire feature while every
test still passed. Caught by asserting the field is DEFINED rather than
guarding on it, which is the same anti-pattern that made two earlier
assertions vacuous. The meta list only ever contains property names, so
matching the name is itself the type check.

Cached per (index, indexedAt): `ensureInitialized` deliberately avoids a
per-call `loadMeta` because every tool routes through it, so this re-reads
exactly when a re-analyze could have changed the answer and never otherwise.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): report declined property reads for opt-out languages too

Generalizing R3-1 rather than waiting for it to be re-reported in the other
direction. The reported case was a JavaScript read whose only anchor was
TypeScript; the mirror — a TypeScript read anchored only in JavaScript — was
still silent, because a language that sets `fieldFallbackOnMethodLookup: false`
had the whole pass skipped, and skipping emission also skipped REPORTING.

Detection is not inference. Counting what could not be linked asserts nothing
about what it means, so `reportOnly` runs the pass for its facts while emitting
no edge, and the opt-out keeps protecting exactly what it protected before.

Two things this turned up that a single-instance fix would have missed:

The cross-language fixture could NOT prove `reportOnly` is load-bearing — the
per-language candidate filter already blocks those edges, so the assertion
passed with the flag forced off. The case that discriminates is a SAME-language
TypeScript read that name inference could legitimately link and the opt-out
forbids; forcing the flag off there emits `readsTsOnly -> tsOnlyBudget`, which
is the violation.

Getting to that case surfaced a sibling gap, recorded but NOT fixed here: the
object-literal `Property` rule is JavaScript-only, so `const CONFIG = { ... }`
in a `.ts` file mints no node and its keys are invisible. The first draft of
this fixture used exactly that shape and could not discriminate for that reason.
It is the TypeScript half of R2-1a and wants its own change, not a rider on
this one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(typescript): index object-literal keys, as JavaScript already did

The sibling recorded in `0c5a4f64` and deliberately left out of it. Both the
named object-literal rule (A1/A5) and the identity-wrapper rule (R2-1a) lived
only in JAVASCRIPT_QUERIES, so the single most common config idiom in
TypeScript —

    export const tsRuntimeConfig = { tsConfigRetries: 3 };

— minted no node for any key. `context()` answered "Symbol not found" and a
precise read through the holding variable had nothing to resolve to.

TypeScript sets `fieldFallbackOnMethodLookup: false`, so these gain no
name-based inference. What they gain is the PRECISE path, which is the route
TypeScript is meant to use: `tsRuntimeConfig.tsConfigRetries` has a typeable
receiver and now resolves. A read through an untyped receiver stays unresolved
and, since `0c5a4f64`, is reported as such rather than answering an empty set.

Scoped exactly as the JavaScript rules are — bound to a variable, and for the
wrapper only the three functions that return the argument they were given —
with the same `Object.entries` negative control pinning the allowlist.

Found by fixture, not by report: the first draft of the `reportOnly` test used
a TS `const CONFIG = { ... }` as its discriminator and could not discriminate,
because the shape mints nothing. That is the whole argument for sweeping a
class instead of waiting for each instance to be filed.

SCHEMA_BUMP 47 -> 48: parse-time, so a warm cache replays ParsedFiles carrying
none of these matches and the keys stay invisible.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): anchor anonymous returned object literals to their function

The last gap round 3 named, and the dominant shape in idiomatic JS: 437
`return {` sites in a single backend directory of the reporting repo, including
the ~25-field payload of its entire signal pipeline. The literal binds to
nothing, so its keys could not even be named — "who reads wickRatio?" had no
symbol to ask about.

The enclosing FUNCTION is the owner: the literal is that function's return
shape, a contract its callers consume. Keys qualify as `<function>.<key>`, so
two functions returning the same name stay two shapes rather than one merged
symbol, and multiple returns in one function stay distinct by position.

RECONCILING THIS WITH R2-1b, which deliberately modelled returned keys as WRITES
to avoid adding same-named competitors to narrowing. These are definitions, but
narrowing now ranks DECLARED anchors — named literals, class fields, interface
and alias members — strictly above return shapes. A name that already resolved
keeps resolving to what it resolved to before, so the competitor problem R2-1b
was avoiding cannot come back. Mutation-checked: dropping that ranking breaks
five pre-existing R2 resolutions.

That also required an R2-1b assertion to change, and the change is a
strengthening rather than a concession. It asserted `toHaveLength(1)` — no new
definition — as a proxy for "adding definitions must not move an existing
answer". The proxy is now false while the property still holds, so the property
itself is asserted directly.

No `HAS_PROPERTY` edge from the function: that would be a `Function|Property`
relation pair the schema does not declare, and an undeclared pair does not
degrade — it throws and kills the whole analyze. That already shipped once in
this PR.

Two things found by dumping rather than assuming, both fixed here:

SHORTHAND keys were not matched at all. `return { symbol, interval, score }` is
the commonest spelling and the reporting repo's own payload is mostly this form,
but tree-sitter models it as `shorthand_property_identifier`, which `(pair)`
does not match. Caught by dumping the golden fixture and seeing a literal
returning `{ level, message, timestamp: Date.now() }` had indexed only
`timestamp`. Now covered in return position AND in the variable-bound rule,
which had the same gap.

Provenance was flagged by owner-presence, which mislabelled the anonymous case:
a callback's return shape yields no name to qualify by, so it looked like a
DECLARED anchor and would have outranked real declarations. Flagged by position
now — a different question from whether a name could be derived.

SCHEMA_BUMP 48 -> 49. Within one PR the version only has to differ from main's,
but a build stamped 48 was installed and used to analyze before these captures
existed, so caches stamped 48 carry none of them — the intermediate-build hazard
this ledger already records for 33/34.

Golden regenerated after verifying the drift: exactly +10 Property and +10
DEFINES, every pre-existing count unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): rank production anchors above test fixtures

Found by testing R3-4 on the reporting repo instead of on its fixtures. Anchoring
returned literals took `wickRatio` from 6 definitions to 13 — and backend reads
still resolved to nothing, because SEVEN of the new JavaScript anchors compete
and four of them are in `tests/`. A test constructs throwaway shapes carrying
production field names; a read in shipped code cannot mean one of them.

Applied before the declared/return-shape split, because "is this the shipped
program" is the stronger signal — a declaration inside a test fixture is still a
test fixture. Skipped when the READER is itself a test, since a read there
legitimately means the test's own shape.

The first version of this test was vacuous and the mutation check caught it: the
reader sat in the same file as the production anchor, so the same-file tier
resolved it whether or not this tier existed. The reader now lives in a file
that imports neither anchor, which leaves production-vs-test as the only thing
that can decide.

Honest about what this does NOT do: it narrows `wickRatio` from seven candidates
to three, and three functions in different files each returning that field is
GENUINELY ambiguous — refusing is correct, and the ambiguity is now counted and
named rather than silent. The reported question ("who reads wickRatio?") is
answerable only where one producer exists; where several do, the honest answer
is the list of producers, which R3-4 made nameable for the first time.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(scope-resolution): resolve members through a call result's return shape

The question three rounds of reports could not answer, and the one narrowing
must refuse by design: a field produced by SEVERAL functions. A read of
`spike.wickRatio` could mean any producer, so name inference correctly declines
and no amount of tier-tuning changes that. It needs evidence, not inference.

The evidence existed in two halves that had never been joined. The call-result
type binding (`const alert = formatSpikeAlert(row)` binds `alert` to a TypeRef
whose rawName is the callee) predates all of this work; it simply had nothing to
resolve to when the callee returned an anonymous literal, because an anonymous
literal named nothing. R3-4 gave it a name. Joining them:

    const alert = formatSpikeAlert(row);
    alert.wickRatio   ->   Property:...:formatSpikeAlert.wickRatio

Precise, at ordinary emission confidence, and it works EXACTLY where narrowing
cannot: several producers sharing a field name stop being competitors because
the receiver says which one. Runs before the name fallback and claims its sites,
so a precise answer is never second-guessed by a name match.

Measured on the reporting repo: 1,410 precise edges, and all six fields round 3
verified OUT-OF-SAMPLE go from 0 backend readers to 7, 11, 10, 7, 6 and 14.
Round 3 scored 0/6 on that set; this is 6/6.

The bound is asserted, not just documented: a read off a BARE PARAMETER has no
binding here, because typing it needs the caller's type to flow in — that is
inter-procedural and genuinely larger. Those reads still fall through to name
inference and are still reported when it declines. The fixture has two producers
sharing a field name precisely so the test cannot pass by name matching, and
mutation-checking the owner lookup fails it.

No SCHEMA_BUMP: this is scope resolution, not parse-time capture, so a warm
cache already carries everything it reads. Noted in the ledger because the
reflex on this branch has been to bump, and an unnecessary bump costs every user
a full re-parse.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* Revert "return-shape anchoring" (R3-4/R3-5): it degrades query

Reverts af5eec5c, c764847a and 4f93f32e. The capability was real and measured —
all six fields round 3 verified OUT-OF-SAMPLE went from 0 backend readers to
7/11/10/7/6/14, 0/6 to 6/6, via 1,410 precise return-shape edges. It is reverted
anyway, because it costs more than it buys in its current form.

`cli-limit-e2e` caught it. Bisected to af5eec5c: on the mini-repo fixture,
`query('message')` returned two processes before and NONE after. The mechanism
is not window displacement — that hypothesis was tested with a partition that
kept function-local property keys from taking window slots, and it changed
nothing. Indexing the keys of every returned literal adds many nodes whose names
are ordinary words, which moves the BM25 CORPUS statistics: "message" gets less
discriminating, and `createLogEntry` — the callable that actually carries the
processes — stops ranking at all. A corpus-level effect is not repairable by a
tie-break.

Trading a regression in `query`, one of the core tools, for coverage in
`context` is the wrong trade, and shipping it because the number was good would
be the same mistake this PR spent three rounds removing: a confident answer that
is worse than the honest one.

What the work established, and what re-landing needs:

  - The mechanism is right. Joining the existing call-result type binding to a
    named return shape resolves `alert.wickRatio` by EVIDENCE, which is why it
    succeeds exactly where name inference must refuse.
  - The cost is search dilution, and it needs to be measured on BM25 ranking
    BEFORE the capture lands — not discovered by a downstream e2e test.
  - The likely shape of the fix is keeping return-shape keys out of the text
    search corpus while keeping them in the graph, which needs persisted
    provenance rather than the in-memory flag used here.

Kept: everything through 8972d223, which is verified green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(search): give the index a notion of DETAIL symbols, and re-land R3-4/R3-5

Reverts the revert. The return-shape work was correct and measured — 1,410
precise edges, and all six fields round 3 verified out-of-sample going 0/6 to
6/6 — and it was dropped for a regression that was really a MISSING LAYER: the
search index had no way to say "this symbol is queryable but is not a concept a
text search should surface on its own".

Indexing the keys of anonymous returned literals adds many nodes whose names are
ordinary words (`message`, `value`, `timestamp`). Without that notion they
compete on equal terms in FTS, push the CALLABLES named after the same concept
past the search's row cap, and `query('message')` returned two processes before
and none after.

The layer, rather than a workaround:

  - `Property.isDetail`, persisted. A Property-only column, which that table
    already precedents with `declaredType`, set where the key is minted.
  - `buildFtsQueryCypher` filters on it for the Property table, BEFORE the row
    cap. That placement is the whole point: rows crowded out never reach the
    caller, so no downstream re-ranking can recover them. Two downstream fixes
    were tried first — a tie-break and a partition of the merge window — and
    recovered nothing, which is what located the real seam.
  - `IS NULL`-tolerant, so an index written before the column existed still
    answers instead of returning nothing.

Verified by the A/B that found the regression: the query's result order is now
byte-identical to the pre-R3-4 baseline —
`proc_0_processrequest, proc_2_errormiddleware, Function:createLogEntry,
Property:LogEntry.message` — with the return-shape coverage retained.

The determinism guard then caught prose in the new DDL comment containing the
token this repo scans for, which would have read as an unordered query. Reworded;
that suite is doing exactly its job.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(processes): let a flow end where the program reaches outward

The item three rounds kept circling. A trace was only emitted at a node with NO
outgoing calls, so a real flow — scan, score, arm, PLACE THE ORDER — is always a
PREFIX of some longer chain that runs on into date helpers, and could never be a
process in its own right. Ranking could not fix that; the flow was never a
candidate to rank.

What blocked it was signal granularity, and the fix is the layer that was
missing rather than a heuristic. GitNexus already knew where the program reaches
outward: the parse phase collects fetch calls and ORM queries carrying
`filePath` + `lineNumber`. Those facts only ever produced FILE-level edges
(`File -[FETCHES]-> Route`), which cannot end a trace — every function in a file
containing one would qualify. Attributing each site to the function whose range
CONTAINS it turns the same facts into the function-level signal the walk needs:
no new extraction, no new relation pair, no schema change. Innermost wins, so a
closure that performs the call is the sink rather than the function spanning it.

Three touch points, and the second is the one that makes or breaks it:

  - the walk emits at a sink AND CONTINUES, so `placeOrder` is an endpoint while
    `placeOrder -> formatDate` still exists separately;
  - subset-removal PRESERVES sink-terminated traces. A sink flow is by
    definition a prefix of the chain that runs past it, so emitting one at the
    walk and deleting it one step later would have been a no-op. Mutation-
    checked: removing this preservation fails all three sink tests, including
    the one asserting the sink is reached at all;
  - selection ranks sink-terminated above leaf-terminated, then by depth.

`processes` now declares `parse` as a dependency. It historically avoided that
on the grounds the dependency was spurious for a progress counter — it is no
longer spurious, so it is declared rather than reached for implicitly, and the
read fails open so a pipeline without that output detects no sinks instead of
losing every process.

Bounded honestly: this fires where fetch/ORM extraction fires. On the reporting
repo it will do nothing until route detection handles hand-rolled dispatchers,
since that codebase routes with `pathname === '/api/...'` on raw node:http and
produces zero Route nodes — a separate gap, and the next one worth closing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(processes): the comment above the sink ranking still described it as unreachable

R3-6 taught the walk what a sink is, but the block explaining the ranking still
carried the paragraph written when that was out of reach — "a business flow
still cannot be a process in its own right ... fixing that means teaching the
walk what a sink is" — sitting directly above the code that does exactly that.
A reader arriving at `rankedByInterest` would take the limitation as current.

The measured-false fan-in finding stays; it is still true and still worth not
re-deriving. What replaces the stale half is the bound that IS current: sinks
fire where fetch/ORM extraction fires, so a codebase whose outward calls are not
detected as such still sees leaf-terminated traces only.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(routes): read a route that is declared by a comparison, not by a framework

`route_map` on the reporting repo returned

    {"routes": [], "total": 0, "message": "No routes found in this project."}

for a codebase with SEVENTEEN route modules, an `apiRouteTable.js`, and 113
path comparisons. Not a partial answer — a statement about the code, and a
false one. Same confident-empty class as the rest of this branch, except here
it takes out a whole tool.

Four route-discovery paths existed — filesystem convention, single-file
framework route, cross-file framework route, decorator — and every one of them
needs a FRAMEWORK to declare the route. A raw `node:http` server declares it
the only way the language offers:

    if (req.method === 'GET' && pathname === '/api/live/portfolio') { … }

A path, a verb, and a handler. Nothing in the pipeline could read it.

The failure modes are not symmetric, so the rules are weighted accordingly: a
route this misses is a coverage limit, a route it invents is `route_map`
asserting something false. A comparison therefore qualifies only against a
demonstrable request path (`pathname`, `*.pathname`, `req.url`; `path` is
excluded — in Node it is overwhelmingly `node:path` or a file location), and
anything untranslatable is dropped rather than approximated:

  - `pathname.startsWith('/api/')` is a namespace test; minting `/api` would
    claim a route nobody serves;
  - a bare `pathname === '/'` with no verb is more often the static-file
    normalisation branch (`pathname === '/' ? '/index.html' : pathname`) than a
    route — WITH a verb the intent is unambiguous, so that form IS taken;
  - an anchored regex converts only when its body is a literal path plus
    single-segment wildcards, so `/^\/api\/research-runs\/[^/]+$/` becomes
    `/api/research-runs/{param1}` while an optional group or an alternation
    bails.

Three things went in that nobody reported, each found by measuring rather than
by a second report.

`switch (pathname) { case '/api/x': }` is the same dispatch in different
syntax, and waiting for a bug report per shape is how a graph stays permanently
one idiom behind the code it indexes.

The reconciliation had to move up a level. The reporting repo keeps its path
table (`isKnownApiPath`) in one module and its handlers in sixteen others, so a
per-file rule sees each half separately and lists every route twice — once
verb-less with the table as its "handler", once properly. Measured: 22 of the
first 94 routes were that shadow. Only the whole registry can tell them apart,
so the rule lives in the routes phase and touches dispatch-guard routes only —
a framework route without a verb is method-agnostic BY DECLARATION (a Django
function view, a Laravel resource), a fact rather than a weaker observation.

And a path composed from a constant needed folding. One of those seventeen
modules writes every one of its routes as `` `${autoTradeBasePath}/rules` ``,
where the base is an alias of a module-level literal. Refusing that lost the
whole file — and lost it INVISIBLY, since a module with unfoldable paths and a
module with no routes are the same empty answer. Same-file only, literals only,
one alias hop, and it refuses on ambiguity: a name declared twice with
different values is dropped rather than guessed, because a partially-folded
path is a wrong route and a wrong route is the failure this module exists to
avoid.

Wiring is a LanguageProvider hook, not a language check in shared code.
`extractDecoratorRoutes` was already the general "route from this file's own
AST" channel rather than a decorator-only one — express routes have flowed
through it as `decorator-express.get` for a while — so the transport, the
`(method, url)` dedup and the handler-symbol resolution all apply unchanged.
`ExtractedDecoratorRoute.source` carries the one thing that genuinely differs:
a decorator route is DECLARED, a dispatch-guard route is INFERRED. The walk is
gated behind a substring pre-filter so it costs nothing on files that cannot
produce a route, and the gate is sound by construction — every rule reaches a
route only through `isPathExpression`, which needs one of exactly those tokens.

SCHEMA_BUMP 49 -> 51, two entries. Decorator routes are worker output carried
in the parse cache, so a warm cache replays results predating the extractor and
`route_map` stays empty — the symptom this fixes, wearing the mask of "the
extractor does not work". The second bump is the v34 hazard tripping again: a
build stamped 50 had already been used to analyze before folding existed, so
caches stamped 50 carry the unfolded route set. Caught by measuring — the
post-folding run came back suspiciously fast and would have reported the
pre-folding number.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): ask whether a value def is FUNCTION-LOCAL, not whether it is module-level

The locality filter for value references was written as an ALLOWLIST of
module-scope defs, and that shape cannot express a class member. A value def has
three homes, not two: module level, a function body, and a CLASS body. Java and
C# fields and Python class attributes live in the third, so an allowlist keyed on
"module level" excludes every one of them by construction.

The guard written to make that safe could not fire either. The set arms whenever
a Module scope is FOUND, and Java has module scopes while having no module-level
values at all — so for Java it armed permanently empty, which is exactly the
state the guard exists to distinguish from "there genuinely are none".

Inverting it removes the class. A blocklist of defs positively identified as
function-local fails safe: a Java field, a Python class attribute, or a language
whose scopes could not be inspected is emitted rather than dropped. That also
retires the arming flag — an empty blocklist and an uninspected one mean the same
thing, and both mean "emit". The failure mode moves from "silently deletes an
edge class" to "retains an inert local", which is the right direction for a tool
whose stated principle is that a confident empty answer is the worst outcome.

MEASURED, because the review that prompted this reported it as a P0 deleting
every Java/C#/Python field ACCESSES edge, and that half does not reproduce.
Instrumenting the bridge over `java-write-access` shows ZERO value-ACCESSES
candidates reaching the filter: Java field references resolve to a `Property`
target and `isValueDefinitionLabel` covers only Const/Static/Variable, so the
filter is never consulted there. Pipeline-level edge sets are byte-identical with
the filter forced on and forced off, across four shapes — Java cross-file field
writes, Java cross-file constant reads, Java bare same-class constant reads, and
a Python module-constant/class-attribute mix. The defect is real and latent; the
blast radius is not. Fixed anyway, because the predicate asks the wrong question
and the next change that makes the bridge the sole emitter would ship the
deletion for real.

New `value-ref-locality.test.ts` pins the invariant triple — local dropped,
module-scope kept, class member kept — by TARGET rather than by `reason`. The
per-language suites filter on `rel.reason === 'read'|'write'` while the bridge
stamps `scope-resolution: read|write`, so they are blind to bridge-side change in
both directions. The file states plainly which half gates the mechanism (JS,
mutation-verified) and which gates only the outcome (Java, because the mechanism
is unreachable there), so it cannot be mistaken for a stronger gate than it is.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(docs): restore the agent guidance a generated-block refresh deleted

Commit 8f8261021's message is entirely about cross-language anchor reporting; it
also regenerated the `gitnexus:start` block in AGENTS.md and CLAUDE.md against a
LOCAL, non-PDG index and swept six documentation/config files along with it. The
review caught this and it is correct. Restored:

  - the index stats, which regressed 248612 symbols / 565510 relationships /
    918 flows -> 29969 / 118986 / 762 — my machine's index described as the
    project's;
  - the whole `pdg_query` bullet and the PDG half of the impact bullet, while
    both capabilities remain live in `mcp/tools.ts` and `local-backend.ts`;
  - the "Inline staleness signal" section in the guide skill, content that never
    left `origin/main` and that this branch had no reason to touch;
  - `.mcp.json`, which had moved from `npx -y gitnexus@latest mcp` to a bare
    `gitnexus` — a fresh clone with no global install gets a dead MCP server.

The worst of it is self-inflicted in a specific way worth naming: commit
411cac9b9, four hours earlier on this same branch, ADDED the instruction telling
agents not to read `risk: UNKNOWN` as an all-clear. The refresh deleted it. So
the branch shipped a new UNKNOWN verdict and simultaneously removed the guidance
for reading it — the exact false-safe this PR exists to remove, reintroduced one
layer up in the docs.

Re-applied that guidance, and found the drift is wider than reported. The review
noted the `.claude/` copy contradicting the plugin mirror; in fact the UNKNOWN
block was present in ONE of five shipped distributions. `gitnexus/skills/` (the
npm package), `gitnexus-cursor-integration/`, and `.agents/` were missing it too,
so every non-Claude consumer of this skill had the old table.

`shipped-skills-sync.test.ts` passed 54/54 through all of that. Its byte-identical
check covers only the plan/work/review/lfg family, and the standard skills are
guarded solely by per-skill fragment lists — so a fragment nobody listed is a
fragment nothing protects. Added the UNKNOWN fragments to that list, plus a
`copies.length > 1` assertion so an empty copy list cannot make the loop vacuous.
Verified it fails against the pre-fix tree.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): require the return-shape producer to RESOLVE, not merely to name-match

Review finding 2, reached independently by three Claude lanes and two Codex
legs, and reproduced here. `emitReturnShapeMemberAccesses` took the receiver's
type binding, then filtered a WHOLE-GRAPH property index with `idNamesMember` —
a textual match on the node id. Any node whose id happened to read
`<producer>.<member>` qualified, in any file and any language, and it emitted at
the 0.9 PRECISE tier where a `minConfidence` floor cannot filter it out. The
sibling unique-name pass was given a per-language restriction for exactly this
hazard; this pass consumed the same shared index with none.

Three guards, catching different shapes:

  - the producer must RESOLVE to a definition (`findCallableBindingInScope` — a
    CALLABLE lookup: the producer is the function whose return shape owns the
    member, and it resolves through finalized import bindings so a producer in
    another file still yields its own file);
  - the member must live in that definition's file;
  - that file must belong to the language being resolved.

The third is not redundant with the second, which is the part worth recording.
A receiver typed by CONSTRUCTION (`const bound = new Loyalty()`) resolves through
the shared class registry, which is polyglot — so the producer resolves into
`Loyalty.java`, its members legitimately live in that same file, and file
equality waves the cross-language edge straight through.

Also fixes the sibling P2: a site where the receiver IS typed to a producer that
owns no such member now claims the site. That branch is the strongest negative
evidence the pipeline can produce, and letting it fall through meant the 0.5 name
fallback answered a question the precise pass had just DISPROVED — measured,
linking a read to an unrelated same-named key in another file.

`polyglot-property-isolation` gains the bound-receiver arm the review asked for,
and it is the right arm: the pre-existing case has an untyped receiver and so
only ever exercised the unique-name pass, while one extra token routes an
identical read through this one. Mutation-verified — restoring the pre-fix
matching makes exactly the new leak assertion fail. The first version of that arm
was silently vacuous (it introduced a JS key of the same name, which destroyed
the fixture's Java-only premise), which is why it now asserts on the TARGET FILE
rather than on the absence of a name.

KNOWN LIMIT, stated rather than papered over: a member-call producer
(`const r = svc.make()`) binds `svc.make`, which resolves to no callable, so this
pass now declines it. Codex B3 raised that converse case and it is real. Fixing
it means typing `svc` and then finding `make` on that type — a larger piece of
work, queued for the follow-up PR. Declining is the correct interim behaviour:
the alternative is matching `make.<member>` by name across the graph, which is
the fabrication this commit removes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): resolve the import map by point lookup so the seal cannot empty it

Review finding 4, reproduced end-to-end by two lanes: the same commit and the
same repo produced a DIFFERENT graph depending on `GITNEXUS_DISK_SCOPE_INDEX`.

`buildDirectImportMap` built `scopeToFile` by walking `parsed.scopes`. The
out-of-core seal replaces `emitParsedFiles` with a scope-STRIPPED copy — that is
its documented contract, scopes are reachable only via `scopeTree.getScope`
afterwards — so under the seal the map came out empty, every `directImports`
lookup returned undefined, and tier-2 narrowing died repo-wide.

The reporting is the worse half. The loss surfaced as `ambiguous`, which means
"several candidates and the pass refused to choose". The truth was "the evidence
was discarded one function earlier". A reader acting on that would go looking for
better receiver typing to fix a problem that was not there.

This is the SECOND consumer of `parsed.scopes` on this branch to hit the seal.
The first was hoisted above it. This one is converted to the point lookup
instead, which is the stronger fix: a point lookup survives the seal by contract,
so there is no ordering left for a future edit to get wrong.

The parity assertion that would have caught it now exists. The sealed harness in
`javascript-const-references` already ran the fixture both ways, but every
assertion in it pinned ONE field's readers — which is exactly how a second
instance slipped in, since no assertion happened to cover a narrowed name. It now
also compares the WHOLE ACCESSES edge set between the two runs, as a sorted diff
so a failure names the edges that moved, with a non-empty guard so two empty sets
cannot compare equal and assert nothing. Mutation-verified: forcing the map empty
fails it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(scope-resolution): bind a producer's own returned key to itself, and stop claiming uniqueness for a ranked answer

Review finding 3, accepting the two defects it demonstrates and declining the
remedy it proposes. Both halves are mutation-verified.

1. A SITE INSIDE ITS OWN RETURN SHAPE NOW BINDS TO ITS OWN KEY.

   `export function buildB(row) { return { tickIntervalMs: row.b } }` writes the
   key that IS `buildB.tickIntervalMs`. Ranking declared anchors above return
   shapes is correct for a READ through a receiver, but applied to this site it
   handed the write to a same-named module const that `buildB` never touches —
   a wrong edge — while the node the key actually defines was left with no
   writer at all. Both halves wrong from one rule applied to the wrong shape.

   Checked before every other rule, because it is evidence rather than ranking:
   the owner qualifier on the candidate id and the enclosing callable are the
   same symbol. Nothing outranks that.

2. THE TIER NO LONGER LIES.

   `workspace-unique` is a claim that exactly one node in the workspace carries
   the name — a fact about the graph, and the label a reader trusts most. An
   answer reached by FILTERING (tests down-ranked, return shapes down-ranked)
   is a weaker claim, and it was reported under the same label. The edge is
   unchanged; what it is allowed to say about itself is not. `narrowed` now
   counts these correctly too, since it keys off the tier.

WHAT I AM NOT DOING, and why. The review proposes dropping the same-file and
imported-file tiers "and keeping only genuine workspace-uniqueness". That would
revert the measured R2 result taking backend readers of `exitMinAtrMult` from
0 to 24. Workspace uniqueness was already measured too strict on that repo: the
field carries 26 Property definitions — 16 in one-off scripts, 7 in the
frontend, one in a test, and exactly one in the backend that reads it. Strict
uniqueness declines all 24.

The alternative suggestion — require the receiver to bind to the owning object —
has the same effect by another route: the population this pass exists for is the
untyped option bag, whose receiver binds to nothing. Requiring a binding turns
the pass off for its own use case. So the two demonstrated defects are fixed and
the capability around them is kept, at half confidence, naming its inference in
the reason string, and honoured only where `fieldFallbackOnMethodLookup` allows.

The R3-5 precision test needed rescoping rather than relaxing: it asserted that
EVERY edge to the contested field is a precise return-shape edge, which the
producer's own (correct, name-tier) write now violates. It asserts the reader
edges are precise and the producer's write binds to its own key — two different
claims reached two different ways, which is what the code now models.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(bench): re-baseline the JS/TS scope-capture fingerprints for this branch's capture additions

The `Cross-language scope-capture fingerprint + scaling guards` CI step was
failing on TypeScript and JavaScript, and it had been failing for the whole PR —
the branch changed both SCOPE queries without ever updating the guard's
baseline. It only surfaced now because a merge conflict had prevented CI from
running at all, so nothing reported it.

Re-baselined per the file's own instruction ("re-baseline intentionally on a
legitimate capture change"), and verified first rather than rubber-stamped. The
capture-name sets in both scope queries, diffed against `origin/main`:

  TypeScript  + @reference.read.identifier      (A2, bare-identifier reads)
              + @reference.type                 (R2-2, type references)
  JavaScript  + @reference.read.identifier      (A2)
              + @reference.read.destructured    (R2-1c)
              + @reference.write.property-key   (R2-1b)

Nothing removed on either side. A pure superset is the check that no EXISTING
capture moved — which is the failure mode a fingerprint guard exists to catch,
and the reason to look before regenerating.

Consistent everywhere else too: `capture_groups_small`/`_large` are unchanged
(4503/14403) because those measure the SYNTHETIC scaling source this branch does
not touch, so only the fixture-corpus number moves — 2097 -> 2338 across 21 new
lang-resolution fixtures, 146 -> 151 files. Scaling stayed linear and inside
budget (typescript 1.116, javascript 1.010, both < 1.5), so the added rules cost
no super-linear time. Prior and new hashes are recorded in the baseline note, as
every previous entry in that file does.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(bench): re-baseline the receiver-resolution drop guard for the new WRITE site kind

Second of the two bench guards that had been failing for the whole PR without
anyone seeing it — CI could not run while the branch was conflicted, so both
went unreported until the merge cleared.

The drift is a new site KIND, not a movement in an existing one:

    totalDropsAllKinds  129 -> 140
    bySiteKind          {call: 102, read: 27}
                     -> {call: 102, read: 27, write: 11}

`call` and `read` are byte-identical, which is the check that matters. This
branch added write-site captures the corpus never had — `@reference.write.
property-key` (R2-1b record construction) and the destructured-read rules — so
write sites reach receiver resolution for the first time, and 11 of them have a
receiver that does not resolve. A drop is the honest outcome for those; the
alternative is the name-inferred guess this series spent three rounds bounding.

Verified it is NOT caused by this session's review fixes before re-baselining:
removing the `memberNotOnShape` site-claim added in 69047086 and re-running gives
the identical 129 -> 140 / write: 11 drift, so the movement predates today and
belongs to the capture work, exactly as the arithmetic above says.

The sibling `scope-emission` guard still PASSES untouched, and the fingerprint
guard passes after 20a937f4 — so all three arms of the benchmarks job are green
locally.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(routes): track boolean polarity in dispatch guards, so a negated condition cannot invent a route

Reproduced exactly as reported. `dispatch-guard.ts` refuses to inherit a verb
from an `if` whose `else` branch holds the comparison — the module's own doc
comment explains why: that branch runs precisely when the condition did NOT
hold, so attributing it is backwards. `!` is the same fact written as an
operator, and it was not handled. A stated invariant with half an
implementation, which is worse than an absent one, because the comment reads as
though it were covered.

Measured against the real extractor before fixing:

    if (!(pathname === '/api/admin'))                  ->  '' /api/admin   INVENTED
    if (!(req.method === 'GET') && pathname === '/x')  ->  GET /x          INVERTED
    if (!(req.method === 'POST' && pathname === '/w')) ->  POST /w         BOTH

And the review is right that this is not additive-only. Driven through the real
pipeline with a policy module that serves nothing plus a one-line route table,
the invented `GET /api/report` collected into `verbedUrls` and
`reconcileDispatchGuardRoutes` then EVICTED the true verb-less route for that
path. A false route deleted a real one. After the fix that repo yields exactly
one route, verb-less, path intact.

Parity, not presence: `!!x` is `x`, so counting negations and testing the parity
is the only rule that keeps a doubly-negated guard working. A negated VERB drops
to verb-less rather than dropping the route — `!(method === 'GET')` means every
method except GET, which no single value expresses, while the path evidence is
untouched. Applies to the regex arm too; `!/^\/api\/x$/.test(pathname)` had the
identical hole.

Deliberately NOT keeping the `statement_block` break from the suggested patch.
It is unreachable — the `!` in `if (!cond) { … }` lives in the condition, a
SIBLING of the block, never an ancestor of anything inside it, and the only
shape that puts a `!` above a block is an IIFE, which the function-boundary stop
catches first. Unreachable in the UNSAFE direction, too: breaking early
under-counts negations, and an under-count reads a negated guard as positive and
invents the route. Verified by mutation — with the break present, deleting it
fails nothing; the other three guards each fail a test when removed.

Six new cases, all previously absent (`grep -c '!(' ` over both test files was 0,
and the only negation covered was `!==`, the form that already worked).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(bench): re-baseline the emit-persistence byte-identity fingerprint for the isDetail column

The third bench guard this branch left red, and the one the earlier
rebaseline pass missed: the `benchmarks (GITNEXUS_BENCH)` job has never
succeeded once in eleven attempts, and since step 11 aborts the job, the
two steps after it — the streaming PDG-emit guard and the cross-language
pipeline benchmarks — have never executed at all.

    [emit-persistence --check] FAIL: byte-identity fingerprint drift
      (got 4ee15e74…, expected 69e9182a…)

Cause is this branch's own `isDetail` BOOLEAN on the Property table
(PROPERTY_SCHEMA), which `streamAllCSVsToDisk` writes as one more header
field and one more cell per Property row.

Verified header-only rather than regenerated on faith. Dumping every CSV
the bench emits on both `origin/main` and this branch and diffing them
per file (name, byte length, sha256): the file set is identical at 35
CSVs, 34 of the 35 are byte-identical, and the sole difference is
property.csv growing 68 -> 77 bytes as the header gains `,isDetail`. The
synthetic graph mints no Property nodes, so not one data row moved —
which is the thing this fingerprint exists to catch. Both timing gates
were green throughout (scaling_ratio 0.783 against a 1.8 budget,
elapsed_ms_large 229ms against the 1000ms backstop), so no throughput
claim is being rebaselined away.

Justification recorded in a `_rebaselined_<reason>` key, the convention
bench/scope-capture/baselines.json already sets, and the note now says so
explicitly so the next regeneration records its reasoning too.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCptYZWRgnnJ821rzebQyj

* perf(processes): build each trace key once, not once per comparison

`deduplicateTraces` held its `join('->')` inside the `some()` callback, so
every already-kept trace had its key rebuilt from scratch against every
candidate: O(T*U) joins of O(depth * id-length) characters. The
allocation, not the substring scan, is what the pass spends its time on.

Nothing about breadth-first search made that safe. It only hid the cost by
keeping traces short — measured on this repo the walk averaged 4.3 steps
before D1 and 9.4 after, which roughly doubles both the number of
surviving traces and the length of every key, so the same quadratic that
was affordable under BFS is about six times the work under DFS. That is
the whole of the slowdown D1 was carrying; the depth-first walk itself is
cheaper than the queue it replaced (`pop()` against an O(frontier)
`shift()`), and its frontier is bounded by depth rather than by breadth.

Hoisting the join into a `uniqueKeys` array removes the multiplication.
Measured back to back on one host, 5 reps, 25k callables, production sink
path (main -> this branch before -> this branch after):

    deep_chain      876.8ms -> 1233.1ms -> 101.9ms
    mixed_cycles    731.4ms -> 1130.6ms -> 132.8ms
    shallow_wide    572.5ms ->  531.8ms ->  49.6ms

and on the real gitnexus/src corpus (11,490 symbols) process detection
goes 204ms -> 89ms against main, having been slower than main before.

Output is unchanged, which is the property that matters here: swapping the
file back and forth and diffing every non-timing field across all sixteen
shape x scale x sink-variant configurations gives no difference, and the
real corpus returns the same 936 processes / 4,648 steps either way. Sink
keys are pushed alongside the traces they belong to, so the comparison set
is the same set it always was.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCptYZWRgnnJ821rzebQyj

* fix(processes): type the parse-output read as ParseOutput

The R3-6 sink read declared its own structural shape for the parse output
instead of naming `ParseOutput`, which made it the only one of the five
parse consumers in the repo not bound to the real type — cross-file.ts,
orm.ts, routes.ts and tools.ts all pass the type argument.

`getPhaseOutput` is a raw `as T` cast, so a local shape checks nothing at
runtime and only severs the compile-time link: renaming `allFetchCalls` on
`ParseOutput` would still compile here and silently detect zero sinks
forever. Verified with a real `tsc --noEmit --strict` run over exactly that
rename — the typed consumers error, this one did not. The runtime `.filter`
stays, since it is the only thing actually guarding the cast.

Also brings the phase docblock back in line with the deps array, which was
missing `structure` (pre-existing) and `parse` (added by this branch), and
records the two parse fields the phase now reads.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCptYZWRgnnJ821rzebQyj

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
2026-08-08 09:58:14 +01:00
azizur100389
7ac0c86165
fix(scope-resolution): link Record graph nodes (#2871)
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* fix(scope-resolution): link Record graph nodes

Register Record definitions and caller anchors so Java and C# record targets and initializer sources resolve to canonical nodes. Keep generated LadybugDB relation pairs and the production benchmark baseline synchronized.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(bench): harden schema-pair production gate

Derive the production count from executable DDL, fail closed when its budget is missing, and independently pin Record-to-Property coverage. Keep benchmark evidence machine-scoped and correct stale schema counts.

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-07 18:33:27 +01:00
Gergő Magyar
997fc05b83
fix(resolution): resolve calls through a generic-typed field receiver in every language (#2833) (#2855)
* test(resolution): pin generic-typed field receivers across languages (#2833)

A field whose declared type carries a type argument (`repo: Repo<User>`)
emits zero CALLS edges — not a truncated chain, not an edge to the
interface declaration, nothing. This adds the cross-language matrix that
measures it, modelled on the #2807 inferred-field matrix: every language
runs the same two calls, one through a generic-typed field and one
through a non-generic control field, and each language is compared
against its OWN control row rather than an absolute edge count.

Measured state, pinned here as `known-gap` so the file is green on main
and flipping a row is a visible edit:

  affected    TypeScript, C#, C++, Python
  unaffected  Java, Kotlin, Go, Rust, Swift, Dart

The unaffected six erase type arguments at interpret time (Java's
`stripGeneric`, F41 #1928; Swift likewise). TypeScript, C# and Python
instead run a container ALLOW-LIST that returns the type ARGUMENT, so a
user-defined `Repo<User>` survives verbatim into a lookup that binds
nothing.

The `ts-local-vs-field` case is the bug in one file: `viaLocal` and
`viaParam` both resolve for the identical type, and only `viaField`
loses every edge — a bare name reaches Case 4 and its generic-aware
lookup, a dotted field receiver does not.

Negative controls pin what erasure must NOT do: an unbounded type
parameter denotes no declaration, and a C++ explicit specialization is a
different class from its primary template. The `Box2<T>` row pins a
PRE-EXISTING false edge (a workspace class named `T`) so it cannot later
be mistaken for fallout from this work.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* refactor(resolution): move resolveClassBindingForName to the shared walkers (#2833)

Pure relocation, no behaviour change: the generic-aware class lookup
moves from `passes/receiver-bound-calls.ts` to `scope/walkers.ts`, beside
the bare `findClassBindingInScope` it wraps. Its two existing callers —
`classifyReceiverOrigin` and Case 4 — import it from the new home and are
otherwise untouched.

The move is required rather than cosmetic: `receiver-bound-calls.ts`
already imports from `compound-receiver.ts`, so having the compound
receiver call into the pass would close an import cycle. `walkers.ts` is
the shared floor both already depend on.

Verified behaviour-neutral: the #2833 matrix is 44/44 identical before
and after, across all fifteen fixtures.

detect_changes attributes `resolveInheritanceBaseInScope`,
`resolveQualifiedInheritanceBase` and `EMPTY_BINDINGS` to this commit;
those are line-shift artifacts of inserting a function above them, and
their bodies are byte-identical.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(resolution): type generic field receivers through the generic-aware lookup (#2833)

A field receiver is spelled `this.repo` — dotted — so it types through
the receiver-chain fold and the text cascade, both of which reach
`findClassBindingInScope`. That function has no notion of type arguments,
so a field declared `Repo<User>` resolved to nothing and the call site
emitted NO edge at all: not the interface declaration, not the
implementation fan-out, nothing. A local or parameter of the identical
type is a bare name, reaches Case 4 and its generic-aware
`resolveClassBindingForName`, and resolved fine. The bug was the
asymmetry, not the generics.

Three receiver-typing lookups now call the generic-aware helper instead:
`typeOfMemberOnClass`'s primary and module-hoist branches, and the
cascade's bare-identifier type-binding read. Every other one of the 38
`findClassBindingInScope` call sites is untouched — its own docstring
records that widening it globally suppresses the `?? otherResolver(...)`
fallbacks two dozen callers rely on, which would retarget inheritance
edges, and impact rates it CRITICAL with 12 direct dependents.

Order matters and is preserved: the helper tries the exact name, then an
arity- and token-exact match against `def.templateArguments`, and only
then falls back to the base name. Erasing first would collapse a C++
explicit specialization onto its primary template — `Vec<bool>` really is
a different class. A bare type parameter carries no type arguments, so it
never enters the generic branch and cannot be erased into a class that
happens to share its name.

Measured: TypeScript and C# generic-typed fields now emit exactly what
their non-generic control rows emit, primary plus interface-dispatch
fan-out. Java, Kotlin, Go, Rust, Swift and Dart are byte-identical. Both
type-parameter negative controls are unchanged. C++ and Python are still
open and stay pinned as known-gaps — they fail for different reasons and
get their own commits.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(cpp,python): bind generic-typed member fields so their calls resolve (#2833)

Completes #2833 for the two languages the shared resolution change could
not reach. Each failed for its own reason, and both were found by
measurement rather than assumed.

C++ — a CAPTURE gap, not a resolution one. All three `field_declaration`
type-binding rules required `type: (type_identifier)`, so a member
declared `Repo<User> repo;` is a `template_type` and matched none of
them: the field got no type binding at all, and every call through it
lost its edge in both the bare and `this->` spellings. A LOCAL of the
identical type resolved the whole time, because the local declaration
rules gained their `template_type` variant long ago. Three mirrored
rules close it, one per declarator shape (plain, pointer, reference).
Written as separate patterns rather than one alternation: a node-type
alternation in a field position is a tree-sitter 0.21 hazard this repo
has been bitten by before.

Python — the bracket spelling never entered the generic branch. Its
`stripGeneric` is a container allow-list over `[...]` that returns the
type ARGUMENT (`list[User]` to `User`), so a user-defined `Repo[User]`
matched nothing and survived verbatim, and the shared lookup's generic
branch is gated on `<`. It now reduces a subscripted type neither
allow-list claims to its base name — the same rule Java and Swift
already apply to `<...>`. Deliberately the LAST resort: a container must
reach its own rule first, or `list[User]` would type the receiver as the
container and retarget every call in a for-loop chain. The as-written
spelling survives on `TypeRef.declaredSpelling`, which is what the fold's
index step reads.

Both are parse-time and land in the cached ParsedFile, so SCHEMA_BUMP
goes 45 -> 46 with its pin test. Verified free against origin/main; the
ledger in that file records three prior EXACT clashes, so re-check again
immediately before merge.

The matrix now covers the spellings real code writes, all measured: a
nullable generic, a bounded wildcard, a raw type, a nested generic and a
multi-argument one. None needed work beyond the shared lookup, which is
the evidence that base-name erasure is the right primitive. The C++
specialization control now asserts what it was written for:
`Vec<bool>.save` and `Vec.save` are DIFFERENT target ids, so the
arity/token match still wins over erasure.

scope-capture is byte-identical for cpp and c, so no rebaseline — the
bench corpus contains no generic-typed member field, which is worth its
own coverage issue.

Two pre-existing gaps were measured and are deliberately NOT fixed here,
because in both cases the language's own non-generic CONTROL row fails
identically: C++ `this->field.m()` emits nothing, and JavaScript/PHP
docblock-declared field types bind nothing at all.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(python): do not reduce containers or typing special forms to a base name (#2833)

Review finding on this branch's own Python change, caught by probing the
interpreter directly rather than by reading it.

The base-name reduction was reached by FALLTHROUGH: "neither container rule
matched" was treated as "not a container". It is not, and two measured
shapes proved it:

  dict[str, list[User]]   ->  dict          (was: the annotation, intact)
  Dict[str, Repo[User]]   ->  Dict
  Callable[[int], User]   ->  Callable
  Literal["a"]            ->  Literal
  Union[A, B]             ->  Union
  tuple[int, ...]         ->  tuple

The dict rule's value group cannot span a nested `]`, so a nested value
declines and falls through — and the dict rule's own comment says that
shape is deliberately "left for a downstream strip pass". Collapsing it to
`dict` destroyed the value type instead. The typing SPECIAL FORMS are worse:
`Callable`, `Literal`, `Annotated` and `Union` are not classes, and reducing
them to a bare name binds any workspace class that happens to share it —
a fabricated edge, which is strictly worse than the missing edge #2833 set
out to fix, and those names are ordinary enough for a real codebase to
declare.

Reduction is now guarded by an explicit deny set covering the containers the
two allow-lists already own and the typing special forms. Everything named
there keeps its as-written text and resolves exactly as it did before #2833.

`arr[0]` also reduces to `arr` in isolation, but that is unreachable and is
now documented as such: every Python `@type-binding.type` capture is a
`(type)`, `(identifier)`, `(attribute)` or `(dotted_name)` node, so a
subscripted VALUE expression never reaches the interpreter.

Pinned by a new unit test that asserts all four groups — user generic
reduces, container reduces to its ELEMENT, declined container shape stays
intact, special form untouched. Reverting the deny set fails three of its
five cases.

Also corrects `resolveClassBindingForName`'s docstring, which this branch
had made false: it claimed only `classifyReceiverOrigin` passes the
decoration stripper, while the three receiver-typing lookups in
compound-receiver.ts now pass it too.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(resolution): rank base-name candidates lexically and refuse arg-pinned defs (#2833)

Review of #2855 found that this PR turned a MISSING C++ edge into a
CONFIDENTLY WRONG one — the direction this subsystem calls unrecoverable.

`resolveClassBindingForName` ended with an unguarded base-name fallback
that returned the first same-named class the scope chain reached. A C++
primary template carries `templateArguments === undefined`, so it can
never satisfy the exact-args branch, and every non-specialized
instantiation fell through to that fallback. Measured through the real
pipeline: with the primary forward-declared and the specialization
defined first, `Vec<int> vi; vi.save()` emitted `Vec<bool>::save`.
Declaring the primary first gave the correct target — selection was
SOURCE-ORDER DEPENDENT. Two more triggers behaved the same way: a
partial specialization (`Vec<int*>` against `Vec<T*>`), and lexical
shadowing between a global `Box<bool>` and a namespaced `N::Box<bool>`.

Two changes, neither of which is any of the three remediations the
review proposed — each was rejected on measured evidence:

- Exact-argument matching is now LEXICAL-FIRST. Candidates come from the
  scope chain, and the workspace-wide qualified-name bucket is consulted
  only when the chain produced no exact match, so cross-file
  specializations still bind.
- The base-name route refuses a definition that pinned its own template
  arguments: if the fallback's answer carries `templateArguments`, the
  visible candidates are re-decided with those removed — exactly one, or
  decline.

Why not the filed options. "If specializations exist and none matches
exactly, return undefined" deletes a green committed row
(`neg-cpp-specialization/runInt` legitimately resolves to the primary).
"Resolve all defs for the base name, return only on exactly one" deletes
a working edge for C# `partial class Repo<T>` split across files — two
unspecialized defs under one name is legitimate, and
`QualifiedNameIndex`'s own docstring names that case. Preferring the
primary alone fixes nothing about shadowing, which is a ranking bug.

The guard is expressed as `carriesOwnTemplateArguments`, not as
"specialization", so shared pipeline code still names no language
(AGENTS.md R6). It can only fire where a declared name carries concrete
arguments — measured `undefined` for `class Repo<T>` in TypeScript and
C# and for a C++ primary template — so the blast radius is bounded to
C++-style specializations.

Partial-specialization SELECTION is deliberately not implemented:
choosing `Vec<T*>` for `Vec<int*>` needs template-argument deduction,
which is a semantics expansion and cannot live in language-neutral
shared code. The source-order dependence is what is fixed; the answer is
now deterministically the primary.

Also in this commit: dropped an unreachable `?? []` (QualifiedNameIndex
returns a frozen empty array on miss by contract) whose comment was
wrong on both clauses; made the docstring true about argument ERASURE
being what widens what binds, rather than only the decoration stripper;
and corrected a stale pointer that still placed
`resolveClassBindingForName` in `receiver-bound-calls`.

`findClassBindingInScope` itself is untouched — 38 call sites, CRITICAL.

Verified: matrix 56/56, cpp.test.ts 334, unit scope-resolution 1505.
Mutation proof: reverting this file fails the three trigger cases and
passes the non-regression cases; restoring it passes all five.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(python): close the deny-set drift axis by case-folding, not by vigilance (#2833)

Review of #2855 found `NOT_A_USER_GENERIC` was a closed list over an
open universe: four review lanes each escaped it with a DIFFERENT set of
names. `Deque` was the sharpest — its lowercase twin `deque` was already
listed, so the omission was an internal inconsistency rather than a
judgement call, and with a workspace `class Deque` present
`self.dq: Deque[User]` fabricated a `Deque.appendleft` edge.

The structural cause is PEP 585: nearly every container has two
spellings differing only in case (`deque`/`typing.Deque`,
`frozenset`/`FrozenSet`). Exact matching forced every pair to be listed
twice, so any half-pair was a silent escape. The deny lookup is now
CASE-FOLDED, which closes that axis by construction — `Deque` becomes
impossible rather than remembered.

`SINGLE_ARG_CONTAINERS` and `MAPPING_CONTAINERS` are now the single
source of truth: they build the two container regexes (verified
byte-identical `.source` and `.flags`, so zero behaviour change) and
feed the property test. The deny set is re-scoped to a closed, auditable
universe — the documented Python stdlib type-system surface — and grew
39 -> 65 concepts: the `collections.abc` views, `contextlib` managers,
`re.Pattern`/`Match`, the `IO` family, ordinary-named stdlib generics
(`Queue`, `Task`, `Future`, `PathLike`), the remaining typing special
forms, and the generic machinery (`Generic`, `Protocol`, `TypeVar`...).

Third-party generics (`Mapped`, `QuerySet`, `Model`) are deliberately
NOT added and are pinned as a decision: that universe is open,
enumerating it only chases the last escape, and declining `Model` would
cost real edges in the many projects that declare one.

The review's suggested property test — derive the names from the
`single`/`dict` regex sources — would NOT have caught `Deque`: `deque`
appears in neither regex, only in the deny set. Both properties are
implemented, since they catch different drift.

The unit test was also TAUTOLOGICAL: it asserted members OF the deny
set, so it structurally could not detect an omission. It now asserts
case-fold closure and PEP 585 alias coverage, and the capture fixture
drops its `as unknown as` cast for the fully-typed helper pattern the
sibling `java-interpret.test.ts` already uses.

Still at interpret time, so no further SCHEMA_BUMP (already 45 -> 46).
Proving the base is a class the FILE can see — the real fix for the
remaining exposure, since `findClassBindingInScope` binds any name with
exactly one workspace def regardless of scope or imports — is a
follow-up, not reachable from this file.

Mutation proof: restoring HEAD's deny-set contents and exact-match
lookup fails four assertions including the `Deque` pair, with the
pre-existing guard rows still passing; restoring gives 125/125.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(cpp): capture qualified generic member fields, and make the bench gate see them (#2833)

Review of #2855 found that the three `field_declaration` rules this PR
added only matched a DIRECT `template_type`, so the common real-world
spelling still bound nothing: `std::vector<Item> items;`,
`ns::Repo<User> r;` and `std::unique_ptr<Repo> p;` parse as a
`qualified_identifier` WRAPPING a `template_type`. "C++ fixed" was
overstated.

Six new patterns — three declarator shapes (plain, pointer, reference)
by two qualifier depths — written as separate patterns rather than one
alternation, keeping the tree-sitter 0.21 field-position discipline the
existing rules follow.

The design choice was measured, not assumed. Codex suggested preserving
the full qualified spelling and normalizing `::`; preserving resolves
NOTHING, because `findClassBindingInScope`'s dotted-tail fallback splits
on `.` while C++ writes `::`, and `ns::Repo` is not an index key either
(C++ emits no `@declaration.qualified_name`). Measured: `ns::Repo<User>`
resolves to nothing, `ns.Repo<User>` resolves to `Repo`. Since a
tree-sitter capture is a NODE and not synthesized text, the only lever
is which node to capture — so `@type-binding.type` goes on the INNER
`template_type`, dropping the qualifier and landing on the same
single-match-or-decline path the bare spelling already takes.

Qualifier depth 3+ (`a:🅱️:c::Repo<User>`) remains uncaptured. Stated as
a limit and pinned by a test row, not claimed as fixed.

The bench blindness the review identified is also closed. The
`scope-capture` C++ corpus contained ZERO template-typed member fields —
confirmed a fourth way by applying six demonstrably behaviour-changing
patterns and getting a byte-identical fingerprint. The corpus now
carries generic and qualified-generic members, and the gate is load
bearing for the first time: three states that all hashed to 856d02f3
before now differ (pre-#2833 0e7cbda7, +this PR's 3 rules de07d8b5,
+these 6 rules bd47c82d). Rebaselined for cpp only; c is unchanged.
Histogram diff: only 5 tags move with the fields, each by exactly +40
(20 entities x 2), and every `@reference.*` count is unchanged.

Over-match is preserved: 20 shapes still produce no field capture,
including the 8 original method/pointer/reference/function-pointer/
using/typedef/friend/operator forms plus their `std::`- and
`a:🅱️:`-qualified variants.

Not fixed here, deliberately: NON-generic qualified fields
(`ns::Address addr;`, `std::string name;`) still capture nothing.
Closing that needs six more patterns and would newly bind every
`std::string`/`std::mutex` member repo-wide, changing edges far outside
#2833. Separate issue.

The template-template-parameter hazard the review filed against these
rules is NOT capture-side: a tree-sitter query has no scope knowledge,
so it cannot know `Map` is bound by the enclosing `template <...>`
header, and the PRE-EXISTING `type: (type_identifier)` rule already
captures a bare `T item;` and erases it the same way. It is handled by
the lexical ranking in `walkers.ts` in this series.

Mutation proof: reverting this file fails 9 of 32 assertions (all eight
qualified spellings return no capture) while every over-match negative
still passes; restoring gives ALL PASS. Bench `--check` passes for all
15 languages.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* test(resolution): pin specialization order, shadowing and the untested spellings (#2833)

Grows the generic-field matrix 56 -> 114 tests, closing every coverage
gap the #2855 review named and turning the fix-agents' scratch evidence
into permanent rows.

The rows that discriminate against the resolver fix (they fail if
`walkers.ts` is reverted):

- C++ specialization must not depend on DECLARATION ORDER: the
  forward-declared-primary/specialization-first arrangement must land on
  the primary, same as the mirror arrangement. Plus a cross-case
  property asserting the two independently built fixtures agree.
- Partial specialization is deterministic in both orders. The note says
  explicitly that selecting `Vec<T*>` would need argument deduction and
  that flipping this row later is a deliberate expansion, not a
  regression fix.
- Lexical shadowing: the namespace-local `N::Box<bool>` wins for a field
  inside `N`, and the global specialization wins at global scope.

The NON-REGRESSION rows are load-bearing — they are why two of the three
proposed remediations were rejected: cross-file C++ specialization
binding, and C# `partial class Repo<T>` split across two files with the
field in a third (two legitimate unspecialized defs under one name).

Coverage the review found missing: C++ pointer and reference generic
fields (two of this PR's three original rules had ZERO coverage); all
six qualified patterns plus the depth-3 boundary pinned as empty;
TS/C# multi-arg container collision; an anti-vacuity sibling for
`neg-bounded-type-parameter`; Swift/Dart rows restructured so the
ANNOTATION is the only possible source (the old rows gave the field an
initializer of the same generic type and could not tell which resolved);
and cross-file, inheritance/MRO, import-alias, static-member and the
TypeScript module-hoist branch.

Six things were measured and pinned AS MEASURED rather than asserted as
wishes, each flagged in its row note: a static/class-level member emits
nothing for generic AND non-generic alike (a static gap, not a generics
one); a cross-file C++ primary template does not bind while the
cross-file specialization does; `std::unique_ptr<Payload>` types to
`unique_ptr` rather than `Payload` (smart-pointer transparency is not
applied on the qualified path); two same-named C++ specializations in
one file collapse to one node id; and the container-name collision
(`Map<string, User>` binding a workspace `class Map`) is recorded as
INTENDED, since the annotation does name that class.

The `new Set(...)` dedup was kept rather than narrowed: a per-case
surplus-edge sweep measured ZERO duplicate edges anywhere in this file,
Swift included, so the quirk that justified a blanket dedup does not
reproduce. The sweep now pins zero surplus per case, so a real
double-emit fails instead of being absorbed.

The file is deliberately NOT split: four assertions compare cases
against each other, cost is linear in cases, and the 1,800,000 ms
`beforeAll` is kept because the same run measured 271-428 s depending on
host load — a tighter bound converts contention into a red suite. The
reasoning is recorded in the file header.

Also corrects the SCHEMA_BUMP pin-test title, which still said (#2766).

Mutation proof: reverting `walkers.ts` fails exactly the five order and
shadowing assertions and passes the other 109; restoring gives 114/114.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* feat(resolution): capture declared type parameters so a type variable is not a class (#2833)

Three review findings were blocked on one missing fact. `templateArguments`
records the arguments a declaration was written AGAINST (`struct Vec<bool>`);
nothing recorded the parameter list a declaration DECLARES (`template <class T>`,
`class Box<T extends Repo>`). So the resolver could not tell a type variable
from a class, and:

- `class Box2<T> { t: T }` beside a workspace `class T` emitted a FALSE edge
  `run2 -> T.foo`. `T` carries no type arguments, so it never entered the
  generic branch — the plain lookup simply bound a same-named class. The
  lexical grounding added elsewhere in this series cannot help, because
  `export class T` IS lexically bound.
- `class Box<T extends Repo> { t: T }` resolved to nothing: no recorded bound
  to resolve through.
- A full specialization `template<> struct Vec<T*>` and a partial
  `template<class T> struct Vec<T*>` were byte-identical (`['T*']`).

`SymbolDefinition.typeParameters` now records `{ name, bound? }` in declaration
order (substitution is positional). `bound` is kept verbatim and un-split, so
`Repo & Closeable` stays whole; ABSENT means UNKNOWN, never "unbounded", which
is what keeps unconverted languages behaving exactly as before.

Transport is the raw parameter-list node via `@declaration.type-parameters`,
read by a language-neutral parser that recognizes TOKENS, not languages:
`extends`/`:` introduce a bound, the name is the trailing identifier, so
`class T`, `typename T`, `in T`, `out T`, `reified T` and `class... Ts` are one
rule. Populated for TypeScript, C++, Java, Kotlin, C# and Rust. JavaScript, C,
COBOL, PHP and Ruby have no declared type parameters to capture; Go and Python
spell them with SQUARE brackets, which this parser deliberately rejects as
ambiguous against subscript and array spellings (Go already has a working
main-thread sidecar in this series); Dart and Swift are straightforward
follow-ups.

Two latent hazards found and closed on the way:

- The new capture was not in `KNOWN_SUB_TAGS`, so it could out-span its own
  declaration and become the anchor — silently DROPPING the whole class def.
- A templated C++ struct matches both the standalone and `template_declaration`
  patterns, minting two defs under one id, and only one twin could see the
  parameter list. `buildDefIndex` is first-write-wins, so MATCH ORDER decided
  whether `Vec` remembered `T`. A narrow duplicate-declaration backfill gives
  both twins the list.

Also fixed by its own test: a Rust lifetime `'a` parsed as a parameter named
`a`, which would have shadowed a real class.

Parse-time output lands in the cached ParsedFile, so SCHEMA_BUMP goes 46 -> 47.
Re-checked against origin/main at write time: main is on 45; 46 was taken by
this same branch, and a warm cache stamped 46 carries ParsedFiles with no
`typeParameters` at all.

The csharp and rust capture goldens were regenerated with the tests' own
documented `UPDATE_GOLDEN=1`; only digests moved, no captureGroups.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(resolution): ground erased base names, and stop a class name from being enough (#2833)

The review's central risk was that this PR converts MISSING edges into
CONFIDENTLY WRONG ones. Base-name erasure (`Repo<User>` -> `Repo`,
`Repo[User]` -> `Repo`) bound through a workspace-wide qualified-name
fallback that consults NO scope, NO import and NO module — it bound any name
with exactly one workspace def. That is why a Python `Mapped[User]` could bind
an unrelated `class Mapped`, and why the language deny lists were papering
over an open universe.

`resolveErasedBaseName` now admits an erased base on one of four grounds,
strongest first: the scope chain binds it; the declaration is in the SAME
FILE; the index proves the name is a template family; or the file binds no
cross-file class at all, so its silence is no evidence. The last ground fails
toward permissive on purpose — every way it can be wrong costs a wrong edge
that already existed, never a working one.

Two measurements drove that design and refuted the simpler rule. A C++
`#include` materializes NO binding whatever, and C# resolves cross-namespace
without `using` through the index — so a pure "require lexical grounding" rule
would have deleted every cross-file C++ generic member. Both are now pinned.

Python erases at CAPTURE time, so by resolution there is no `<` and the
grounded route was never entered. `erasedTypeApplication` rebuilds the
application from `TypeRef.declaredSpelling` — strictly: the raw name must be
the base and the argument list the whole balanced remainder, so `User[]`,
`vector<Item>` and `Repo<User>?` decline and behave exactly as before.

Closing it took finding FOUR emitters, not one. Three were in Case 4; the
fourth was `emitReferencesViaLookup` re-emitting the refused edge from the
pre-resolved reference index, which needed the site marked handled with a
recorded `receiver-unresolved`. A fifth lived in the text cascade: a declined
fold falls THROUGH by design, and the cascade held its own ungrounded copy of
the member-typing lookup. This file typed a receiver from a `TypeRef` in five
places and the PR had wired three; all five now go through one
`classOfDeclaredType`.

Also here, from the same review:

- Type parameters no longer bind a same-named class (uses the new
  `typeParameters`), and a BOUNDED parameter resolves through its bound.
- A cross-file C++ PRIMARY template now binds: a ranking bug, not a capture
  one — the index fallback needs exactly one candidate and `Vec` held two, so
  removing the argument-pinned declaration leaves one.
- `this->field.m()` resolved to nothing for generic AND non-generic alike. A
  language that declares `this` IS the enclosing class
  (`resolveThisViaEnclosingClass`) synthesizes no `this` typeBinding, so a
  chain whose BASE is `this` could never seed its head. Reading the provider
  flag keeps the rule language-free.
- Class-level (static) member receivers emit nothing in TypeScript and Kotlin
  — for the non-generic control too. Case 6 types them from the DEF side
  (`isStatic` + `declaredType` on the field node), which needs no capture
  change; the target lookup stays the ordinary instance walk, so a static
  field HOLDING an instance still binds an instance method and a genuine
  static call is untouched.

Partial-specialization SELECTION is deliberately not implemented: it needs
argument deduction against a parameter list, and full C++ partial ordering is
a real algorithm with no measured driving case. The discriminator now exists
if someone wants it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* fix(cpp,js,php,go): close the remaining per-language generic-field gaps (#2833)

Four language gaps the review measured, each with a different cause.

**C++ qualified member fields.** `std::vector<Item> items;`, `ns::Repo<User> r;`
and `ns::Address addr;` captured NOTHING: every field rule required the type
node to BE a `type_identifier` or `template_type`, and a qualified member type
is neither — tree-sitter wraps both in a `qualified_identifier`. Three
depth-agnostic rules (one per declarator shape) now match the outer node, which
also REMOVES the depth boundary rather than raising it: depths 1-4 capture,
generic and non-generic alike.

Preserving the qualifier resolves nothing — measured: `ns::Repo<User>` binds
neither way, because the dotted-tail fallback splits on `.` while C++ writes
`::`, and `ns::Repo` is not an index key. Since a capture is a NODE and not
synthesized text, the qualifier is dropped in `interpret.ts` by a top-level-only
`::` split, so `std::vector<std::string>` reduces to `vector<std::string>`, not
`string`.

Measured cost of the non-generic half, which was the reason to hesitate: field
captures go 8 -> 32 across the C++ bench corpus, but the resolution-level census
over those 13 repos is 32 CALLS edges before and 32 after, BYTE-IDENTICAL. It
fabricates only where a workspace class shares a std name (`class string` beside
`std::string name;`), which is the same accepted policy the already-landed
qualified-generic rules carry, pinned in the matrix as intended.

**JavaScript `@type {Repo<User>}` and PHP `@var Repo<User>`.** Neither bound a
field type — and neither did the NON-generic control, so this was a docblock gap
rather than a generics one. PHP needed TWO captures, not one: with only the type
binding, `$this->repo->save()` resolved until a second class declared `save` and
then went unresolved, because narrowing a same-named method needs the receiver's
member owned. Generics do NOT come free in PHP — `normalizePhpType('Repo<User>')`
returns `'User'` by the container-element convention, so passing the raw spelling
through would have emitted `User::save`; type arguments are erased at capture
instead. In JavaScript they DO come free, verified byte-identical to the
TypeScript control. Both decline what they cannot prove: arrays, `list<User>`,
unions, `Promise`/`Array` wrappers (via an exported predicate rather than a
copied name list), statics, and any property that already has a native type.

**Go generic interfaces.** `UserRepo` genuinely DOES implement `Repo[User]` —
the spec says a generic type must be instantiated, that instantiation
substitutes type arguments and yields a new non-generic type, and that a type
implements an interface when it is in its type set. So the old behaviour was a
FALSE NEGATIVE and the matrix note calling it "already correct" was wrong.
Satisfaction is now checked against POSITIONALLY SUBSTITUTED method sets, so
`Repo[Order]` does not match a `Save(x User)` implementor — substitution, not
erasure. #2829's exact method-set model is untouched: pointer receivers still
follow MS(*T), unexported names stay package-scoped, the declaration's own
method set is still checked first, and the harvest is gated so a repo with no
generic interface never runs it. `go.test.ts` is unchanged at 296 passing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* test(resolution): pin every fix from the review, 114 -> 155 rows (#2833)

Eight rows in this matrix pinned gaps that the fixes in this series close, so
each asserted the opposite of the new truth. All eight are flipped, and the
prose describing them as open gaps is corrected. Nine new cases cover the fixes
that would otherwise have shipped unpinned.

Flipped, each measured: the type-parameter FALSE edge (`run2`) is gone; a
bounded parameter now resolves through its bound with fan-out; the cross-file
C++ primary binds; the C++ qualifier depth boundary is removed rather than
raised; Go gains its two structural implementors and JOINS the paired sweep,
which had quietly excluded it — that exclusion was the taxonomy admitting a bug;
and both static-member rows resolve.

Added: JS `@type` and PHP `@var` docblock fields with three PHP declines; a
Kotlin `companion object` receiver (given an INTERFACE control so the paired
sweep can check it, which `ts-reach-shapes` cannot — its two sides are not
count-comparable); the Python third-party grounding refusal plus the ground that
still ADMITS, so an empty row can never be read as "erased names never resolve";
the four mirrors that would break if grounding were tightened (same-file and
imported Python, a C++ `#include`, C# cross-namespace without `using`); C++
qualified non-generic fields including the fabrication policy and its absence
case; `this->field.m()` for generic and non-generic with bare controls; and a Go
negative proving substitution is positional, not erasure.

Three shapes are pinned AS MEASURED with notes saying they are deliberate limits
so nobody "fixes" them by accident: C++ partial-specialization selection is
deterministically the primary (real selection needs argument deduction);
`std::unique_ptr<T>` types to the pointer, not the pointee (`.` and `->` are
indistinguishable to the resolver, so transparency would trade a recoverable
miss for a confident wrong edge); and two same-named C++ specializations in one
file collapse to one node id, which is why the shadowing fixture uses two files.

One row pins a REMAINING wrong edge rather than hiding it: `m.inner.ping()` on
a `Mapped[User]` head still binds the unrelated workspace class, while the
one-segment-shallower `m.save(u)` correctly declines. The obvious one-line guard
was written and MEASURED not to close it, so the surviving route is elsewhere
and wants its own diagnosis — a broader refusal would change chain-head
resolution for every language without pinning the shape it is meant to fix.

`bench/scope-capture` is rebaselined for the six languages whose captures moved,
regenerated from a fresh measurement rather than pasted; `--check` passes for all
15.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* perf(resolution): remove three measured hot-path regressions this series added (#2833)

A quality pass over the #2833 series found three performance defects it had
introduced, all measured, plus dead code and stale docs from six agents having
appended to the same files across four rounds. No behaviour change: the
resolver suite is identical before and after, and every scope-capture
fingerprint is byte-identical.

**An accidental quadratic in Go instantiation harvesting.** `collectGoInstantiations`
calls `record()` for every type binding and every declared, return and parameter
type in every Go file, and the `includes('[')` gate does not filter Go's most
common types — `map[string]string`, `[]map[string]*v1.Pod` and
`map[string]map[string]int` all produce a `map` candidate. Each false base then
failed a full scope-chain walk and fell through to a LINEAR SCAN OF EVERY
INTERFACE IN THE PROGRAM, with no dedupe on the spelling, so the same
`map[string]string` written 10,000 times paid 10,000 scans. Now a
qualified-name index built in `buildDetectionIndexes` (one probe, ambiguity
semantics preserved exactly) plus a per-scope base memo:

    8,000 interfaces / 80,000 spellings:  6,662 ms -> 104 ms   (64x)

`resolveEmbeddedInterface` held a byte-identical copy of that scan and now
shares the helper. `GoInstantiation` was a single-field wrapper and collapses
to the array it wrapped; its two parallel maps fold into one whose inner key IS
the dedupe. `candidateStructIdsFor` was rebuilt per instantiation although
every substituted method set has the same key set — hoisted, and materialized,
because one branch returned a live iterator that would have yielded nothing on
a second pass.

**`scanForCrossFileClass` asked a name-keyed question that needs no name key.**
It answered "does this file bind any cross-file class" by probing every
accessible namespace once PER NAME. It now iterates the channels directly,
taking whichever side is smaller so a large namespace table cannot reintroduce
the product. Predicate and early exit preserved:

    5,000 module names x 1,000 namespaces:  159.0 ms -> 1.2 ms   (132x)

**A duplicated scope walk on every generic receiver.** `resolveClassBindingForName`
computed the lexical candidate list, then `resolveErasedBaseName` recomputed
the identical `findAllBindingsInScope`. Computed once and passed:

    receiver at depth 8:  5,617 ns -> 3,091 ns   (-45%)

**A whole extra AST traversal per JavaScript and PHP file.** The docblock
synthesis passes each added a full tree walk to find one node kind — the ninth
in the JS emitter, the third in PHP. `node.namedChildren` materializes a
wrapper array across the N-API boundary for every node, so one added pass cost
1.9x what parsing the entire file costs. Folded into the existing walks as one
more node kind; capture output is byte-identical and every fingerprint is
unchanged. Total emit time per file drops 4-7%.

Hygiene, all verified stale rather than assumed:

- `receiverOriginOpts` passed `resolveThisViaEnclosingClass`, which
  `classifyReceiverOrigin` never reads — the "both hooks" comment above it is
  true again.
- The `stripDecoration` docstring's caller roll-call claimed the only
  edge-emitting caller "emits no edge and can only change a diagnostic label".
  Case 6 passes it and does emit edges. Replaced the roll-call with the rule;
  six rounds each appending a name to a list is how it went wrong.
- A Python comment described the resolution-time grounding as a follow-up that
  "this parse-time pass cannot do" — it landed in this same branch and is
  pinned by `py-erased-grounding`.
- `classOfDeclaredType` took a `scopeId` all five callers derived from the
  `TypeRef` they also passed. Dropped, so "these five are the same call" is
  enforced rather than asserted.
- Three exports with no consumer outside their own file.
- PHP had three copies of one preceding-comment sibling walk and two regexes
  for one tag, so a fix to either reader of `@var` would land on one and not
  the other — the symptom being a field typed differently from its own foreach
  element type. One walk, one regex.

Tests: the new matrix leaked a fixture repo per case; it now carries the
sibling suite's `cleanupTempDirSync` and the Windows EBUSY reasoning that goes
with it. `PAIRED` was a second hand-maintained list and 19 of 41 cases had
silently fallen out of it — it is derived from the cases now, with a new
assertion that each case is either swept as a pair or carries a written reason
it is not. That recovered one genuine omission (`php-typed-property`).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KtNfG6EPn738Y51AYs7wDp

* test(bench): rebaseline receiver-resolution for the #2833 this-> fix

The `Receiver-resolution drop guards` CI step failed on this branch:

  shapeArm.cpp.fieldReceiverCall:  "INVISIBLE-GAP" -> "RESOLVES"
  shapeArm.cpp.decoratedFieldType: "INVISIBLE-GAP" -> "RESOLVES"

Both are the intended improvement. The guard is exact-match by design —
the drop count cannot move without a deliberate rebaseline, and the
rebaseline path demands the movement be explained — so this records the
two shape flips and leaves the call-drop count arm untouched.

BASELINE.md still claimed `this->repo.save()` and `this->repo->save()`
were INVISIBLE-GAP. That is now false: the `resolveThisViaEnclosingClass`
head seed added in this PR resolves both. Also notes what the control
established — this was never a generics gap, since the non-generic
control failed identically before the fix.

* docs(parse-cache): narrow the SCHEMA_BUMP ledger to what the bump delivers

The ledger claimed a warm cache would make "the whole fix ... a silent
no-op on every incremental analyze". That overstates the constant. The
bump invalidates the PARSE half; whether the re-parsed captures reach the
graph is gated separately and does not move:

  - `isIncremental` (core/run-analyze.ts) tests `!options.force`, an
    existing meta, `!schemaFingerprintMismatch(...)`, feature parity,
    non-empty `fileHashes` and a git repo. SCHEMA_BUMP is in none of them.
  - the incremental branch writes back only `hashDiff.toWrite` and logs
    the rest as "unchanged file rows preserved".
  - SCHEMA_FINGERPRINT hashes node/relation DDL, untouched here, so it is
    byte-identical and moves nothing either.

So an incremental analyze re-parses an unchanged file correctly but keeps
its existing rows; the new edges land on the next full rebuild. That is
the pre-existing contract for every capture change, not a regression in
this PR — but the comment should not promise more than it delivers.

Comment only; no behavior change. SCHEMA_BUMP stays 48.

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-07 17:14:13 +01:00
azizur100389
1fa751d76d
fix(spring): extract method-level RequestMapping routes (#2857)
* fix(spring): extract RequestMapping route methods

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(spring): address RequestMapping review findings

* fix(spring): accept trivia in request methods

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Gergő Magyar <gergomagyar@icloud.com>
2026-08-07 11:43:19 +01:00
Gergő Magyar
e69d3c49c4
fix(analyze): gate FTS-indexed DML before the incremental writeback (#2841) (#2854)
* fix(lbug): never report a drop that could not happen, and gate FTS-indexed DML

`CALL DROP_FTS_INDEX` is itself an FTS-extension function, so with the
extension unloaded it fails with `Catalog exception: function DROP_FTS_INDEX
is not defined`. `isBenignDropFtsIndexError` classifies that as "nothing to
drop" — correct when the index does not exist, wrong when it does: the drop
silently no-ops and the next write to that table dies at bind time with an
engine message that never mentions FTS (#2841).

The classifier stays pure (a message cannot tell you whether an index is
live). Instead `dropFTSIndex` settles liveness with a catalog read on the
ERROR path only and raises an FTS-named, remedy-bearing error when the index
is present but undroppable.

Adds `ensureFtsRowDmlSafe`, the FTS twin of `ensureEmbeddingRowDmlSafe`
(#2623): catalog first, load FTS with the analyze policy only when an index
actually gates DML. LadybugDB refuses that DML at BIND time — a DETACH DELETE
matching zero rows fails exactly as hard as one matching thousands — and the
indexes cannot be cleared in place, so a verdict is the only useful answer.

Both gates now share one `SHOW_INDEXES` read via `readIndexCatalogRows`, so
adding the FTS check costs no extra catalog round-trip.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* fix(analyze): escalate instead of crashing when FTS blocks incremental DML

The incremental writeback decided its write plan without ever asking whether
row-level DML was legal. On a DB carrying FTS indexes with an unloadable FTS
extension, `deleteNodesForFiles` then died mid-writeback:

    Binder exception: Trying to delete from an index on table File but its
    extension is not loaded.

with no mention of FTS anywhere in the run — the only install-capable load
happened in Phase 3, long after the writes (#2841).

The incremental branch now reads the index catalog once and derives both
extension verdicts before any DML. When FTS (or VECTOR) blocks in-place
writes, the run falls through to the existing wipe-and-bulk-COPY escalation
— the same answer #2623 gave for VECTOR, and the only one available, since
the indexes cannot be dropped without the extension.

Every blocked extension is named in the reason log, not just the first one
checked: a DB can carry both a vector index and FTS indexes, and reporting
half the cause is how this failure stayed mis-diagnosed.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* test(analyze): cover the FTS DML gate, both-blocked escalation, and the drop guard

New `incremental-index-extension-dml-gate.test.ts` drives the real
`runFullAnalysis` against a real mini-repo and a real LadybugDB:

  - a DB carrying FTS indexes with FTS made unloadable escalates to a full DB
    write, names FTS in the log, ends with zero FTS indexes, and still has the
    newly committed content in the graph (pre-fix: Binder exception, exit 1);
  - FTS available keeps the surgical plan and the indexes;
  - a DB that never carried FTS indexes is not escalated (the catalog-first
    check must not tax FTS-less machines);
  - FTS and VECTOR both blocked produce ONE escalation naming both.

`drop-fts-index-error-classification.test.ts` gains the two `dropFTSIndex`
cases the #2841 guard turns on: live index + unloaded extension rejects with
an FTS-named error, absent index still resolves. The existing classifier
assertions are unchanged — it stays pure.

The CLI e2e reproduces the reporter's exact journey (analyze with the
extension, remove it, touch a file, analyze again) and asserts exit 0 plus an
FTS-named reason. It skips visibly when the seeded extension cannot load on
the host, so it can never report a false red about the fix.

Mutation-verified: reverting the run-analyze gate fails the first scenario;
reverting the dropFTSIndex guard fails the live-index case.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* fix(lbug): make every catalog-gated path fail closed, and classify the drop remedy

Review findings on #2854 (two-engine, 17 lanes).

H3 — `ftsIndexExistsInCatalog` returned `false` when the catalog could not be
read, i.e. "index absent", so `dropFTSIndex` swallowed the error and the caller
proceeded as if the index were gone. That is the #2841 symptom the guard exists
to make loud, and it contradicted the contract `readIndexCatalogRows` states two
functions above. It now fails closed.

§6.A — `ensureFtsRowDmlSafe` keyed on `index_type === 'FTS'`, which answers
`undefined === 'FTS'` → false → *no gate* for a row whose shape cannot be read:
fail-open, in the gate whose only job is preventing an unsafe write, while the
VECTOR twin fails closed on the same input. Now only a positively-identified
non-FTS index is waved through. Deliberately NOT the twin's `!== 'HASH'`: that
is safe there only because it is scoped to the embedding table first, and this
gate is table-agnostic — `!== 'HASH'` would let the HNSW index gate FTS DML.

§5.A — `undefined` was overloaded: "caller passed nothing" and "caller tried and
could not prove anything" shared one value, so a failed shared read silently
became three reads and the two gates could decide from different snapshots. The
failed snapshot is now representable (`INDEX_CATALOG_UNREADABLE`), leaving one
unambiguous `??` in `resolveGateRows`.

§5.B — both gates regained the unconditional null-connection precondition the
refactor moved into the reader.

§5.G — the throw's remedy now routes through `diagnoseExtensionLoad`, like
`--repair-fts` and `ftsDegradedWarning`, so a missing runtime dependency is not
told to reinstall. The message stays path-free (#2374/#2375).

The dead positional row fallbacks are kept and marked `LADYBUGDB-CONTRACT`:
removing them would turn a proven-inert hedge into a fail-open gate if a future
engine returns unnamed tuples.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* fix(analyze): never undo an explicit wipe, stage extension-forced rebuilds, report honestly

Review findings on #2854 (two-engine, 17 lanes).

H1 (P1, both engines) — `analyze --drop-embeddings` was silently reverted. The
`--drop-embeddings` → `force` conversion sits inside the `embeddingCheckpoint`
branch, so without a checkpoint the run stays incremental and reaches the gate;
the flag then *deliberately* leaves `cachedEmbeddings` empty, which is exactly
the rescue's trigger, so every row the operator asked to destroy was read back
and restored, exit 0. Widening the rescue from `!embeddingRowDmlSafe` to
`extensionForcedRebuild` moved that latent bug onto the dominant path, because
every analyzed DB carries FTS indexes. Guarded on the flag itself — NOT on
`shouldLoadCache`, which is false in the meta-under-reports case the rescue
exists for and would have deleted the safeguard while fixing the wipe. The
`--drop-embeddings --embeddings` variant is covered by the same guard.

H2 — an extension-forced escalation wiped the LIVE index in place: `buildPath`
was frozen ~440 lines earlier while the run was still classified incremental,
so an interrupt or ENOSPC left no complete index, where main failed at bind time
with it intact. Extension-forced rebuilds now build into a staging file and
publish via the existing atomic swap; size-forced ones stay in place, since that
trigger is the repo's own churn rather than a machine condition.

H5 — the escalation log asserted a vector index "exists" and that the store
"carries FTS indexes" in exactly the case the catalog read proved nothing, while
the only truthful signal went to stderr rather than the IPC log. It now emits a
distinct unreadable-catalog cause, and "this index carries" (which pointed at
the vector index just named) reads "the graph store carries".

§5.D — the write-set cause was dropped whenever an extension cause co-occurred;
causes are appended now, not selected between.

§5.C — after an FTS-forced rebuild stamped lastCommit, a plain rerun on the same
commit hit the alreadyUpToDate fast path before Phase 3, so the CLI's "install
… then rerun" advice could never restore FTS. The fast path is now bypassed when
meta records FTS unavailable and the extension can load again, keyed on the
persisted capabilities stamp rather than new state.

§5.F (skip the escalation for a zero-change commit) is deliberately NOT
implemented: `deleteSpringAutoConfigurationSyntheticClasses` and
`deleteSpringAopEvidenceNodes` run unconditionally on the surgical branch and
bind against FTS-indexed `Class`/`CodeElement`, and a zero-row DETACH DELETE
fails at bind time exactly as hard as a large one — so the skip would restore
the original crash.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* perf(search): read the index catalog once per drop sweep, and state the real contract

Review findings on #2854.

H4 — on a machine where FTS cannot load and the DB carries no FTS index, the
gate correctly returned early without loading the extension, but the surgical
path still ran the full 20-entry drop sweep: every `CALL DROP_FTS_INDEX` raised
"function DROP_FTS_INDEX is not defined", and the new liveness guard then fired
a fresh catalog read per table — 20 reads every run, forever, for exactly the
offline/load-only population, contradicting the "healthy path costs nothing"
claim shipped with the guard. The sweep now reads the catalog once and skips
entirely when no FTS-typed index exists. An unreadable catalog runs the sweep,
so an unprovable catalog never skips real work.

H8 — the docstring still promised `dropFTSIndex` "tolerates" an unloadable
extension. Post-#2854 a live index plus an unloadable extension throws, and
safety rests on caller ordering discipline rather than the type system — which
is what would have talked the next caller out of that ordering.

GUARDRAILS — the "switching to a full DB write" sign described exactly one
trigger (write set >~50%). Since #2623 and #2841 an unloadable extension
escalates regardless of write-set size; documented with its recovery steps.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* test(analyze): cover the wipe guard, the staged rebuild, and the fail-closed branches

Review findings on #2854.

H1/H2 mutation-verified: removing `!options.dropEmbeddings` fails the new
drop-embeddings case ("expected true to be false"); disabling the staging
upgrade fails the staging case ("expected 0 to be greater than 0"), so both
assert behaviour rather than describe it.

Gate suite (7 cases): `--drop-embeddings` under an FTS-forced escalation ends at
zero embedding rows and logs no "Preserving"; the escalation is one-shot — a
third run on a healthy host returns to surgery and rebuilds every FTS index; an
extension-forced rebuild is observed building into `lbug.staging.*` and leaves
none behind; the rescue complement still preserves un-stamped rows when no wipe
was requested; the never-built case now asserts the commit reached the graph.

H6 — the both-blocked case hard-asserted `createVectorIndex()` while the suite
probed FTS only, so it went red on any FTS-yes/VECTOR-no host. VECTOR is probed
now and gates only that case, with a GITNEXUS_REQUIRE_VECTOR hard-fail.

H7 — the fail-closed branches had no coverage although the VECTOR twin's test
and interception technique were ready to copy: `ensureFtsRowDmlSafe` under an
unreadable catalog now proves it routes to the load, and `dropFTSIndex` proves
it rejects rather than silently tolerating. Plus a redaction case that forces a
real path-bearing load failure — under policy `never` the assertion would have
been vacuous, since that reason carries no path.

§5.E/§6.B — the suite is registered in the cross-platform matrix (its sibling
was; it wasn't, and GITNEXUS_REQUIRE_VECTOR is set only on that job) and moved
into the sequential lbug-db project per TESTING.md:68, verified not to drop it
from the sharded ubuntu job. A Windows shard weight is added as a labelled
estimate — the 8s floor would skew the split it exists to protect.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* refactor(analyze): make the FTS gate's fast path cheap, its claims provable, and its remedies classified

Cleanup review of the #2841 work (four parallel angles: reuse, simplification,
efficiency, altitude). Behaviour-preserving except where the previous behaviour
was wrong.

Correctness the review caught:

- The fast-path probe keyed on `capabilities.fts.status === 'unavailable'`,
  which collapses "extension unavailable" and "index build failed". A
  deterministic build failure (an un-tokenizable row, #2544) therefore bypassed
  `alreadyUpToDate` on EVERY subsequent run, re-analyzed the whole repo, failed
  the same way, and restamped — a permanent loop where the run used to be one
  `stat`. Phase 3 already computes the discriminator; it is now persisted as
  `fts.skipReason` and the probe only runs for `extension-unavailable`. Metas
  written before this carry no field and keep today's behaviour.

- `dropSearchFTSIndexes` skipped its sweep when no row read `index_type ===
  'FTS'`, while `ensureFtsRowDmlSafe` treats an unreadable type as "might be
  FTS". Opposite polarity, under a comment claiming they matched: a row-shape
  change would let the gate wave the surgical plan through while the sweep
  dropped nothing, putting DELETEs back on tables carrying live FTS indexes —
  #2589 again. The sweep now decides per configured index on identity, which
  is also strictly more precise. Its old justification (leftover indexes under
  other names) was unreachable — the loop only ever drops configured entries.

- `dropFTSIndex` threw "FTS index X on table Y exists" on the one path where
  the catalog could not be read — a fabricated claim, on a DB the same run had
  just shown carries no FTS index. Presence is now `present | absent |
  unverifiable` and the message says which.

- The remedy was hand-written for three of the four load-failure classes,
  discarding `missingFileRemedy`/`corruptFileRemedy`, so a corrupt extension
  file was told to retry an install — the misdirection #2383 fixed. Both the
  drop error and the escalation log now use the classified remedy.

Cost, measured on a 391 MB index (cold open ~1 s, SHOW_INDEXES ~4 ms):

- The probe opened the live index WRITABLE on the millisecond fast path,
  dragging in schema DDL, the cross-process write lock, sidecar reclaim and a
  CHECKPOINT on close. It is read-only now. That also closes an install trap:
  `doInitLbug`'s pre-load resolves the env policy on the writable branch, so an
  operator following our own `GITNEXUS_LBUG_EXTENSION_INSTALL=auto` advice paid
  a forked 15 s installer on every up-to-date run (memoized per process; the CLI
  is a fresh process each time). The read-only branch pins `load-only`.

- A failed staged rebuild orphaned a full index-sized copy until the next lock
  sweep; the failure path now reclaims it.

- The sweep re-read a catalog the run already held, defeating the invariant the
  snapshot type exists to enforce.

Structure: row-shape accessors have one home, so the LADYBUGDB-CONTRACT grep
claim is true by construction; staging now applies to both escalation causes,
since recoverability is a property of the wipe-then-COPY plan, not of the
trigger; `getExtensionCapability`/`getFtsCapability` replace hand-spelled
lookups where the seam allows.

Two lookups in run-analyze.ts deliberately keep the exported
`getExtensionCapabilities()` form: the #2383 tests stub that export, and an ESM
module mock does not intercept a helper's internal call — routing through it
silently degraded the classified remedy to generic text. Recorded in-comment.

Not taken, deliberately: extracting the escalation message and replacing the
snapshot protocol with a connection-scoped catalog memo (both sound, both
restructure code this PR just stabilised — they belong in their own change);
an extension registry (premature at two instances, and the FTS/VECTOR polarity
difference is exactly what it would have to parameterize back out).

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* test(analyze): pin both sides of the degraded-FTS fast-path bypass

`healDegradedFts` (§5.C) had zero coverage — three separate review angles
flagged it, and the cleanup pass then found it sat one conjunct away from a
permanent full-re-analyze loop. Both sides are pinned now:

- it re-analyzes past `alreadyUpToDate` when the stored meta says FTS is
  degraded and the extension loads again: run 1 analyzes with loads blocked
  (asserting the precondition — `status: 'unavailable'`, `skipReason:
  'extension-unavailable'` — rather than assuming it), then a same-commit
  clean-tree rerun rebuilds every FTS index without a file changing;
- it stands down when the degradation was a BUILD failure: the stored
  `skipReason` is rewritten to 'build-failed' and the rerun must take the fast
  path, because that rebuild would fail identically on every run forever.

The build-failed state is reached by rewriting the stamped discriminator, not
by provoking a real tokenizer failure: a genuine one needs a stored row the
native tokenizer rejects (#2544/#2546), which is neither portable across the CI
matrix nor deterministic, and §5.C reads only that field.

Also folds the first escalation case into the one-shot case. The claim that it
was fully subsumed did not hold on audit: `logs` containing 'FTS' was unique as
expected, but so was the duplicate-File-node row count — every other reader goes
through a Map keyed by path, which collapses a stale twin an appending rebuild
would leave. Both assertions moved rather than one being dropped.

Net suite runtime goes UP (two cycles removed, four added), against the
cross-platform-matrix argument that motivated the dedup — recorded here because
the shard weight is an estimate pending a real Windows measurement.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* test(search): keep the whole-module adapter mock in step with the row accessors

The cleanup pass moved the LadybugDB row-shape reads behind named accessors so
the column contract has one home. `fts-indexes.test.ts` mocks the entire adapter
module with a hand-written factory, which still exposed only the three exports
the file imported before — so `verifySearchFTSIndexes` failed with "No
`indexRowName` export is defined on the mock" while production was fine.

The added accessors mirror the real implementations rather than returning
stubs. A stub would have read `undefined` out of every catalog row and let the
suite pass for the wrong reason — the failure mode a whole-module mock invites
whenever the module under test grows an import.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* revert(analyze): drop the degraded-FTS auto-heal, fix the advice it existed to justify

§5.C's complaint was that the CLI tells users to "install the extension … then
rerun" when a rerun lands on the up-to-date fast path and rebuilds nothing. The
answer shipped for it was a probe that bypasses that fast path. Four independent
problems later, the sentence is cheaper to fix than to make true:

- it could not tell "extension was missing" from "index build failed" without a
  stamped discriminator, so a deterministic build failure (#2544/#2546)
  re-analyzed the entire repo on every invocation, forever, where the run used
  to be one `stat`;
- it opened the live index on the millisecond fast path — writable at first,
  dragging in DDL, the cross-process lock and a CHECKPOINT (~1 s on a 391 MB
  index), and even read-only it is a full open;
- `doInitLbug`'s pre-load resolves the env policy, so an operator following our
  own `GITNEXUS_LBUG_EXTENSION_INSTALL=auto` advice paid a forked 15 s installer
  per up-to-date run;
- and it turns the fast path into a full re-analysis whenever an index authored
  where FTS was unavailable is later read where it loads — a legitimate, common
  state, and the invariant `analyzer-identity-cli.test.ts` pins.

So: no probe. The degraded-search warning now points at `gitnexus analyze
--repair-fts`, which rebuilds the search indexes without re-parsing the repo,
instead of "then rerun". One line, no new failure modes, and it is what the
issue actually asked for.

`capabilities.fts.skipReason` stays in the meta stamp: it costs three lines,
makes the two degradation causes distinguishable for support, and is what any
future correct answer here would key on.

Also gates the H2 staging assertion on the production predicate. It asserted
staging unconditionally while the upgrade requires `posixSwap || windowsSwapOk`,
and `windowsSwapOk` is opt-in (#2614) — so it failed on the Windows matrix for a
reason unrelated to #2841. Registering this suite cross-platform is what exposed
it; the assertion now mirrors the condition it is testing.

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

* fix(analyze): never stage around a damaged index — escalate in place when the catalog is unreadable

CI caught this on ubuntu and macOS: `analyze-wal-checkpoint-failure` stopped
failing, which is worse than it sounds.

That test plants a directory at `.gitnexus/lbug.wal.checkpoint` so the
auto-checkpoint's rename target is blocked, and asserts analyze exits non-zero
with the `--wal-checkpoint-threshold` hint. But LadybugDB cannot open that path
at all, so `CALL SHOW_INDEXES()` now fails with `IO exception: … Is a
directory`. The catalog read returns UNREADABLE, both DML gates correctly fail
closed, both extension loads fail with the same IO error, and the run escalates
— and since the escalation stages, it built a fresh index at
`lbug.staging.<uuid>`, swapped it in, and exited 0.

The blocked path was never touched. The run "succeeded" while the damage sat
untouched on disk, waiting to break the next in-place writeback.

So the staging upgrade is now conditional on the catalog having been READ.
Staging exists to protect a healthy live index from a machine-level cause (an
extension that will not load); it must not be used to route around a damaged
one. When we are escalating out of ignorance, build in place so the underlying
IO fault lands on the failure path where the operator gets a diagnosis.

Verified against the real CLI, not just the suite: with a directory planted at
the checkpoint path, analyze now exits 1 and prints
`gitnexus analyze --wal-checkpoint-threshold 67108864`. The healthy
extension-forced case still stages (gate suite 6/6).

Refs #2841

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CxokkpfssUCxvBwRZMtRCB

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-07 09:44:44 +01:00
Gergő Magyar
a033b04c46
fix(go): scope and define each type_spec, not the type_declaration (#2837) (#2843) 2026-08-06 00:55:48 +01:00
Gergő Magyar
aaa78f9590
fix(scope-resolution): fan out interface dispatch from Case 3b receivers (#2832) (#2842)
* fix(scope-resolution): fan out interface dispatch from Case 3b receivers (#2832)

Case 3b (chain-typebinding) folds a receiver through the same
`resolveCompoundReceiverClass` call and the same `[owner, ...mroFor(owner)]`
walk Case 0 uses, but emitted its edge without calling
`emitInterfaceDispatchFor`. When that fold landed on an Interface the site got
one edge to the interface's bodiless declaration and none to any
implementation — the defect #2813 reported for field receivers, in the half
#2829 did not cover.

The gap was a property of how a receiver was SPELLED rather than of what it
resolved to. `d.repo.save()` contains a dot, so it took Case 0 and fanned out;
binding the identical field to a local first — `const r = d.repo; r.save()` —
made the receiver a bare name with a dotted typeBinding, which is Case 3b, and
lost every implementation edge.

`ownerDef` is the receiver's own folded type, matching Case 0's `currentClass`
and Case 4's `ownerDef`, not the owner of the member the MRO walk settled on:
a receiver folding to a concrete class that merely inherits an interface method
must not fan out, because its runtime type is that class. The closure
self-gates on `ownerDef.type !== 'Interface'`, so the call is inert for every
concrete receiver and needs no language check. Confidence is the 0.85 literal
this case's own primary emits, so dispatch edges never outrank the edge they
hang off; Case 4's site.kind-dependent value has no counterpart here because
Case 3b's primary does not vary that way.

The new fixture pins the route as well as the fix. `const r = d.repo` reaches
Case 3b and nothing else can take the site: Case 0 needs a `.`/`(` in the
receiver name or a minted receiver chain, and `encodeReceiverChain` returns
undefined for the empty step list a bare identifier produces; Case 4 excludes
itself on the dot. Before the fix the primary assertion passed while the
fan-out came back empty — the exact "reached Case 3b and stopped at the
declaration" signature.

Resolution-side only: this changes what the resolver produces, not how it is
stored, so no SCHEMA_BUMP applies. An existing index must be re-analyzed to
show the new edges.

Follow-up from #2829.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(scope-resolution): record Case 3b's interface-dispatch fan-out in I4 (#2832)

Invariant I4 documented the fan-out as something "Cases 0 and 4 both perform"
and spelled out Case 0.5's exclusion, while saying nothing about Case 3b —
which is what made 3b's missing fan-out an undocumented asymmetry rather than
a deliberate exclusion someone could defend or point at.

With the fan-out added, Case 0.5 is the only case that folds or walks to a
receiver type without dispatching to implementations, and its exclusion is
gated behind `resolveThisViaEnclosingClass`. Saying so explicitly keeps the
next reader from having to re-derive which cases fan out by reading the pass.

Comment-only; `detect-changes --scope staged` reports no graph change.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(scope-resolution): add the concrete-implementor control for Case 3b (#2832)

The Case 3b fan-out shipped with one negative control — a chain folding to
PlainCache, a class that implements nothing. That proves only the weak claim:
no interface anywhere near the site, no fan-out.

Add the stronger negative. SqlRepo implements Repo, so an interface IS in
scope and `save` is a name Repo declares, yet the receiver's folded type is
the concrete class and nothing may fan out. This is the control that fails if
a later change fans out from the interface a member is DECLARED in rather than
from the receiver's own folded type.

The comment says what the control cannot do, too: it cannot catch "member
owner passed instead of folded type" in TypeScript, because an implementing
class always declares the member itself, so the MRO walk never settles on the
interface's bodiless declaration.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NdZtWXQJUGB1ZGLH2YNw3o

* docs(scope-resolution): correct four overclaims the review found (#2832)

A multi-lane review of this PR reproduced, against the real pipeline, that
several claims in the comments and one test name assert more than the code
delivers. No behavior changes here — only the text, and one test rename.

1. The test comment gave the WRONG REASON why the concrete-implementor control
   cannot catch "member owner passed instead of folded type". It said an
   implementing class always declares the member itself; `class C extends Base
   implements I {}` is valid TypeScript and inherits it. The real reason is that
   TypeScript's MRO chain never contains an implemented interface, so the walk
   cannot settle on an interface declaration for a concrete receiver. The
   mutation IS expressible where a concrete class inherits a `default` interface
   method (Java, Kotlin) — reproduced during review — so this is language-scoped,
   not inherent, and a follow-up fixture is tracked.

2. "fans out to every implementation of the folded interface" certified a
   completeness that does not exist. TypeScript emits heritage edges for
   `class_declaration` only (languages/typescript/captures.ts:749, stated in its
   own docstring at :732-733), so `abstract class X implements I` and `interface
   B extends A` produce no heritage edge and still dead-end on the bodiless
   declaration. Renamed to name the shape actually covered, with a KNOWN GAP
   note. The gap is in the capture layer and predates this fan-out.

3. Invariant I4 said Case 0.5 is the ONLY case that resolves a receiver type
   without fanning out. Cases 3 and 5 do too, by direct lookup rather than a fold
   or MRO walk. The sentence now says which distinction it means and states the
   reachability argument (no known language reaches Case 3 with an Interface —
   every one that could strips the namespace qualifier first, sending it to
   Case 4) instead of implying a completed audit.

4. The gate's rationale claimed the `ownerDef.type !== 'Interface'` test is right
   for every non-Interface receiver. An abstract-class receiver also dead-ends on
   a declaration-only member and does not fan out. Noted, with why widening the
   gate belongs to Cases 0 and 4 across all languages rather than to #2832.

Also completes the module-level case ladder, which still credited the fan-out to
Case 0 alone and omitted it from the Case 3b entry.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NdZtWXQJUGB1ZGLH2YNw3o

* docs(scope-resolution): name Case 2 in the I4 exclusion list too (#2832)

The first pass at this correction listed Cases 3 and 5 as the other cases that
resolve a receiver type without fanning out, and was itself incomplete: Case 2
also walks an MRO and its binding admits `Interface`. It is excluded for a
different reason than 3 and 5 — its receiver IS the type name, so the site is
static dispatch and a fan-out would be wrong, whereas 3 and 5 resolve by direct
lookup rather than a fold or MRO walk. Say both rather than enumerate one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NdZtWXQJUGB1ZGLH2YNw3o

* fix(scope-resolution): close the two gaps the #2842 review left open

Both were pre-existing and reached by Cases 0 and 4 as well; the Case 3b
fan-out only widened the population of sites that hit them. Researched against
the real TypeScript compiler and the language service before choosing
semantics, plus how comparable tools draw the same lines.

1. THE FAN-OUT COULD TARGET A STATIC MEMBER

`class C implements I { static save() {} }` does not satisfy `I` — TypeScript
rejects it as TS2420, "Property 'save' is missing" — so an edge from an
`I`-typed receiver to a static member names a target dispatch can never
produce. The closure picked targets with `pickOverload`, which applies no
static filter, while the surrounding cases pick their own primary with
`pickFirstNonStaticOnly`: the speculative edges were picked with weaker rules
than the certain edge they hang off. A same-name static+instance pair also made
`pickOverload` return OVERLOAD_AMBIGUOUS, suppressing the CORRECT edge too, so
this was a false negative as well as a false positive.

Every comparable tool draws this line: tsserver partitions static from instance
results, clangd gates on `isVirtual()` (C++ forbids virtual statics), jdtls
filters abstract-or-static, and class-hierarchy analysis expands only VIRTUAL
call sites.

The guard prefers `provider.isStaticOnly` where a language declares it and
falls back to the graph node's `isStatic`. That order is load-bearing, not
stylistic: the method extractor derives `isStatic` from the OWNER type as well
as the member (`staticOwnerTypes`), and the JVM config lists
`object_declaration` — so reading the flag first would delete Kotlin `object`
implementations, which are singleton INSTANCES and genuinely reachable. Kotlin
is the only hook implementor and marks exactly the companion-promoted set;
Ruby's `singleton_class` (`def self.foo`) is correctly filtered by the
fallback.

2. TYPESCRIPT HERITAGE WAS CLASS-ONLY

`interface B extends A` and `abstract class X implements I` emitted no heritage
edge at all, so the subtype closure had nothing to descend and both shapes
dead-ended on a bodiless declaration — including the very example the closure's
own docstring cites as the reason it exists. Since Case 3b's dotted-alias
binding survives qualifier-stripping only in TS/JS, this was the language that
actually reaches the new path.

The two shapes reach their bases differently: an abstract class carries the
same `class_heritage` child a concrete one does, while an interface's bases
hang off `extends_type_clause` directly. That clause's `type` field is
`multiple: true`, so `childForFieldName('type')` would silently drop `C` from
`interface B extends A, C` — hence iterating named children.

Deliberately NOT structural matching. TypeScript is structurally typed, so a
class satisfies an interface without `implements`, but tsc's own navigation is
declaration-only and says why: "users are typically only interested in explicit
implementations... The type checker doesn't let us make the distinction between
structurally compatible implementations and explicit implementations, so we
must use the AST." scip-typescript reached the same design independently. gopls
does match structurally, but only because Go has no `implements` keyword to
prefer.

Abstract declarations are still walked THROUGH rather than targeted — the rule
everywhere is "does it have a body?", which is what `isDeclarationOnly`
already tests.

VERSIONING. The capture change is parse-time, so a v43 warm cache would serve
entries missing the new matches: SCHEMA_BUMP 43 -> 44 with its pin test moved
in the same commit, verified against origin/main at a857f4c5a (still 43).
Rebaselined only the `typescript` scope-capture fingerprint, justified by a
capture-name histogram diff over the same 145-file corpus: the only deltas are
@reference.inherits 17 -> 20 and its paired @reference.name 245 -> 248, emitted
together by `emitTsInheritanceBase`. Every other capture count is byte-identical
and javascript is unchanged, the language having no interfaces.

Tests: the fan-out now covers a static-shadowing subclass, a concrete class
below an abstract intermediate, and an implementor of an extending interface.
Resolvers 3176 passed; all five bench gates pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NdZtWXQJUGB1ZGLH2YNw3o

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 15:50:08 +01:00
Gergő Magyar
9372b17049
fix(python): resolve calls through an unaliased dotted namespace import (#2826) (#2828)
* fix(python): resolve calls through an unaliased dotted namespace import (#2826)

`import pkg.db` followed by `pkg.db.session_scope()` emitted no CALLS edge,
while all three sibling spellings resolved. In a codebase whose style guide
mandates absolute imports this is close to the only cross-module call form
used, so `impact()` reported `impactedCount: 0, risk: LOW, epistemic: exact`
for functions with dozens of real callers — a dropped caller reading as a
verified all-clear.

The resolution path was never missing; one map was keyed on the wrong half of
the import. `interpretPythonImport`'s plain arm splits `import pkg.db` into
`localName: 'pkg'` (the name Python actually binds) and
`importedName: 'pkg.db'`, and finalize carries both onto the edge as
`localName` / `targetExportedName`. `collectNamespaceTargets` keyed only on
`localName`, but the receiver text captured at the call site is the whole
dotted path — Python's query binds the attribute's `object` field with a
wildcard, so `pkg.db.session_scope()` yields the receiver `pkg.db`. Case 0
declines it (a module is not a class) and falls through, Case 1 looks up
`pkg.db` and misses, and Case 1.5 needs `resolveQualifiedReceiverMember`,
which only the C++ provider implements. The site drops silently.

Key the map on the dotted import path as well — gated on a provider opt-in,
not on the edge shape. The shape alone cannot decide it: Swift's
`import Foo.Bar` produces the identical pair (`localName: 'Foo'`,
`targetExportedName: 'Foo.Bar'`), but there the FIRST segment is the resolved
target and `Foo.Bar` names a nested type. Minting a key for it would hand
`resolveConstructionExpressionClass` an authoritative namespace — that branch
deliberately does not fall through on a miss — and break `Foo.Bar(x)`
construction that resolves correctly today. Hence
`ScopeResolver.namespaceReceiverIncludesImportPath`, which only Python sets.

The root-segment check on the added key does real work: `import pkg.db as pdb`
binds only `pdb`, so writing `pkg.db.f()` there is a NameError, and its edge
(localName `pdb`, path `pkg.db`) is correctly rejected.

Two same-package imports stay separate — `import pkg.db` + `import pkg.cache`
key `pkg.db` and `pkg.cache` independently, so neither call can land in the
other's module; the shared `pkg` bucket keeps its existing ambiguity rather
than gaining any.

Tests: five integration rows (the issue's own repro, the three sibling
spellings as controls, non-crossing two-package imports, a three-segment
receiver, and dotted construction) plus a unit pin on the keying rule that
asserts a Swift-shaped edge mints nothing. All five integration rows fail on
the pre-fix tree; the controls pass on both, which is what makes them
controls. Resolver integration suite 3024 passed / 1 skipped / 0 failed;
scope-resolution unit suite 1446 passed.

This changes what the resolver produces, not how it is stored — no schema or
version constant applies, and an existing index needs a re-analyze to show
the new edges.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(resolution): shadow-test a dotted namespace key by its root segment (#2826)

`isNamespaceNameShadowed` walks the scope chain looking for a binding, type
binding, lexical name, or owned def named exactly `namespaceName`. Once a
namespace key can be a dotted import path, that string never matches anything:
`import pkg.db` binds `pkg`, so a local `pkg = Decoy()` shadows the import,
but the guard was asked about `pkg.db` and answered "not shadowed".

The consequence is not a missed edge but a wrong one. The caller treats a
verified namespace as authoritative and deliberately does not fall through to
the workspace-wide simple-name heuristics, so an unguarded shadowed receiver
resolves construction against the imported module instead of the local value.

Test the first dot-separated segment instead. Single-segment names are
unaffected — their root is themselves — so every pre-existing row keeps its
behaviour.

This ships with the key that first routes a dotted name into the guard rather
than after it: the previous commit is what makes the defect reachable.

The new pin fails on the pre-fix guard (verified by reverting the four
comparisons and re-running: 1 failed / 5 passed), so it discriminates rather
than merely passing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(python): pin the callee name on the dotted-construction row (#2826)

The row asserted only that `builds` reached `pkg/db.py`. That module also
exports `session_scope`, so a regression that resolved the construction to the
wrong member of the right module would have kept the test green — it pinned
the file, not the answer.

Assert the exact edge set for the caller instead. Verified against the current
tree with a scratch probe: `builds -> Model@pkg/db.py` is the only edge the
file produces.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(plans): include the #2826 engineering plan in the PR

`.gitignore` keeps `docs/*` local because planning output is normally
throwaway. Force-added here at the reviewer's request so the plan travels with
the work it drove: it records the evidence chain behind the fix, the two places
the plan turned out to be wrong, and the follow-ups deliberately left out of
scope.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(resolution): make the namespace shadow guard shared (#2826)

`isNamespaceNameShadowed` lived module-private in `compound-receiver.ts` with a
single caller. The namespace map it guards has three consumers, and the next
commit adds the guard to a second one, so it moves to `scope/walkers.ts`
alongside the other scope-chain primitives rather than being duplicated.

Behaviour is unchanged — this is a move plus documentation. Two notes were
added because both are easy to get wrong later:

- Fails closed on a missing scope or a parent cycle. For every caller,
  suppressing costs a missing edge while trusting a corrupt scope chain costs a
  wrong one, so the bias is deliberate.
- It reads `scope.bindings` DIRECTLY rather than through `lookupBindingsAt`,
  which is the opposite of the fix #2745 applied to Rust's `headBoundLocally`.
  There the question was "is this name bound at all?", so missing finalize's
  import channels lost real bindings. Here the question is "does something
  LOCAL shadow the import?", and the import's own finalized binding is exactly
  what must not count — routing this through `lookupBindingsAt` would find every
  namespace import shadowing itself and suppress the lot. Verified against a
  target module carrying a self-named def, which still resolves.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(python): close the three remaining namespace-receiver gaps (#2826)

Three defects the first fix left behind. All three were confirmed by probe
before being touched, and a fourth suspected gap was disproved the same way.

## 1. Case 1 resolved through an import a local had shadowed

`namespaceTargets` is collected per FILE, but Case 1 in `receiver-bound-calls`
consulted it with no lexical guard at all, so

    import pkg.db
    def f(pkg):            # parameter shadows the package
        return pkg.db.session_scope()

emitted an edge to pkg/db.py. That is a WRONG edge, and it predates the dotted
key: the single-segment spelling (`import single` + `def f(single)`) failed
identically. The compound-receiver construction path has applied this guard
since #2770; Case 1 simply never did. Now both use the shared guard.

## 2 + 3. The root key named the leaf module, not the package

These read as two gaps and are one. `import a.b.c` binds ONE name — `a` — but
makes three attribute paths callable, naming three different files:

    a      → a/__init__.py
    a.b    → a/b/__init__.py
    a.b.c  → a/b/c.py

The map keyed only `a`, pointed at the LEAF. So `a.helper()` resolved into
a/b/c.py whenever that module happened to export `helper` — silently preferring
a decoy over the real definition in the package — and `a.b.mid()` resolved to
nothing at all. One wrong edge and one missing edge from a single mis-keying.

Fixing it needs per-language knowledge the shared collector cannot have: which
prefixes are reachable, and which file each names. The `__init__.py` convention
is Python's alone, and the edge shape is ambiguous across languages — Swift's
`import Foo.Bar` produces an identical `localName`/`targetExportedName` pair
that means the opposite thing. So the previous commit's boolean opt-in is
replaced by `ScopeResolver.namespaceReceiverPaths`, which returns every
spelling with the file it names; absent or declining, the shared default
(bound name → own target) is unchanged for every other language.

Prefix files are proposed, not asserted — `moduleFileExists` drops any the
workspace never parsed, so a PEP-420 namespace package contributes no key
rather than one pointing at a missing file.

## Disproved: C# was not a fourth gap

The plan listed C# `using System.Collections.Generic` +
`System.Collections.Generic.List` as the same class of bug. It is not: a probe
shows `My.Deep.Space.Helpers.Work()` already resolves through the FQN namespace
bindings in `walkers.ts`. No change made, and the claim is withdrawn rather
than carried forward as a known gap.

## Testing

Integration: the shadow block asserts the exact surviving edge set (an
absence-only assertion would also pass if the guard over-suppressed and killed
the clean rows); the prefix block asserts all three spellings land on their own
file, with `helper` defined in BOTH package and leaf so a wrong edge is visible
rather than merely possible. Unit: 16 rows on the keying contract, including
that a Swift-shaped edge mints nothing and an alias import keys neither the
path nor the root.

Resolver integration 3024 passed / 1 skipped / 0 failed; scope-resolution unit
1452 passed; tsc clean in both packages.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(python): probe both path separators when resolving a prefix package (#2826)

Workspace file paths are not normalized to POSIX at ingestion — `import-target`
already re-normalizes at five other comparison points, and `moduleScopeByFile`
is keyed by the raw `ParsedFile.filePath`. The prefix probe built only the `/`
spelling, so on Windows it would compare `a/b/__init__.py` against an
`a\b\__init__.py` key, find nothing, and mint no prefix keys at all.

That fails quietly, which is the worst shape for it: `a.b.mid()` simply goes
back to unresolved on one platform, with no drop recorded and every test on
POSIX still green. Probe both spellings and key whichever the workspace
actually holds.

The new row is mutation-tested — reverting to the `/`-only probe turns it red
(1 failed / 10 passed), so it pins the behaviour rather than passing alongside
it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(python): correct three defects a multi-lane review found in this PR (#2826)

All three were introduced by this PR's own earlier commits, and none was found
by re-reading the diff — each came from a lane attacking an angle the author
had not.

## 1. The shadow guard ran BEFORE the map lookup it gates

Case 1 evaluated `isNamespaceNameShadowed` unconditionally, then consulted
`namespaceTargets`. So every call/read/write site with an explicit receiver, in
every language, paid a scope-chain walk (a Set allocation, three Map lookups and
a linear `ownedDefs` scan per level) ahead of an O(1) hash miss that was going to
decline it anyway.

The proof it was an oversight rather than a decision sits in this same PR: the
sibling guard in `compound-receiver.ts` reads the map first and only guards on a
hit. Two call sites of one shared function, opposite order. Semantics are
identical either way — a miss yields `undefined` regardless — which is exactly
why it survived several readings.

## 2. Prefix packages were anchored on the import spelling, not the resolved leaf

`pythonNamespaceReceiverPaths` built `a/__init__.py` from the dotted path joined
at the workspace root, never consulting the file the import actually resolved
to. But `resolvePythonImportTarget` resolves off-root in two of its three tiers,
so `import utils.db` can land on `libs/common/utils/db.py`. That produced a
wrong edge where a same-named `utils/` package exists at the root, and produced
NOTHING in a `src/` layout — the prefix feature was inert for the most common
Python project shape, silently.

Now the prefix directories are derived by walking back from the resolved leaf,
which is exact for root, `src/` and off-root layouts alike. It also inherits the
leaf's own separator, which subsumes the previous dual-separator probe: that
probe was dead code anyway, because `filesystem-walker.ts` normalizes `\` to `/`
before a path ever becomes a `ParsedFile.filePath`. Its test row is removed
rather than left asserting an unreachable state.

## 3. Keying the root at `__init__.py` INSTEAD of the leaf lost re-exports

`findExportedDef` accepts only a binding whose `origin === 'local'`. The
canonical Python package re-exports from its submodules — `from .b.c import
helper` in `__init__.py` — which is an IMPORT binding, so it is rejected. Keying
the prefix solely at the package therefore turned `a.helper()` from a correct
edge into no edge at all for the most common package shape.

Every fixture in this PR defined its members locally in `__init__.py`, which is
precisely the one layout where that mistake is invisible.

The prefix now keys the package FIRST and the leaf behind it. A real definition
in `__init__.py` still wins over a same-named decoy deeper in the package, and a
name merely re-exported there still resolves through the leaf. Ordering is the
contract, so the unit rows assert the exact arrays rather than membership.

## Testing

New rows: off-root layout with a decoy `utils/` at the root, and a `src/` layout.
Both mutation-tested — reverting to the spelling-anchored build turns them red.
The re-export case was verified end-to-end with a scratch fixture whose
`__init__.py` only re-exports (`uses -> helper@a/b/c.py`).

Resolver integration 3131 passed / 1 skipped / 0 failed — unchanged from before
these fixes, so they regress nothing. Scope-resolution unit 1459 passed.
tsc clean in both packages.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(resolution): stop the namespace shadow guard AT the module scope (#2826)

CI caught a regression this PR introduced: `cjs-exports-assignment.test.ts`
lost both of its cross-file rows —

    cross-file require() member call resolves
      expected [] to deeply equal [ 'handle' ]
    an `exports` parameter does not hijack the module (UMD factory)
      expected [] to deeply equal [ 'publicApi' ]

— i.e. `const svc = require('./svc'); svc.handle()` stopped resolving in
JavaScript.

Cause: in CommonJS the namespace import IS a variable declaration. One
statement produces both the ImportEdge and a module-scope `const` binding, so
the guard, by inspecting the module scope, found the import's own name there and
read it as a shadow of itself — suppressing exactly the receivers it exists to
enable.

The guard's own contract sentence already said the right thing: "a declaration
BETWEEN the call site and its module scope". The module scope is the floor of
that walk, not a rung on it. It now returns at Module without inspecting it.

Nothing is lost on the suppression side: a genuine shadow is a parameter, a
local, or a nested declaration, and all of those live in scopes strictly inside
the module. The Python rows that pin suppression (`def f(pkg): pkg.db.f()` and
its single-segment `import single` twin) still pass, because a parameter is an
inner scope.

Worth recording for the next reader: two independent review lanes examined this
exact scenario and both REFUTED it, reasoning that `require()` yields an
ImportEdge in `scope.imports` rather than a local binding. That is true for
Python's `import x` and false for CommonJS, where one statement is both. My own
probe used a Python fixture and so could not surface it either. Agreement
between reviewers was not evidence; the test corpus was.

Verified: cjs-exports-assignment 36/36, the #2826 integration rows 7/7,
scope-resolution unit 126/126.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 11:35:27 +01:00
Shifra Williams
a6a8aa788c
feat(serve): validate and port-scope the origin/proxy configuration surface (#2820) 2026-08-05 06:52:39 +01:00
Gergő Magyar
cabd5b82f9
fix(go): model Go method sets exactly so interface satisfaction is decidable (#2813) (#2829)
* test(go): pin calls through an interface-typed struct field (#2813)

A call through an interface-typed struct field never reaches the
implementation: the CALLS edge stops at the interface DECLARATION, so
`impact()` on the implementing method reports 0 callers. This commit adds
the executable statement of that defect; the fixes follow.

Two stacked defects produce it, and either alone is enough to reproduce —
which is why no existing fixture could observe it:

  D1  `buildDetectionIndexes` skips every POINTER-receiver method, so a
      struct whose methods are all `func (r *T)` has an empty method set,
      structurally satisfies nothing, and gets no IMPLEMENTS edge. Go's
      rule is that the method set of *T includes pointer-receiver methods,
      and idiomatic Go stores *T in an interface-typed field.
  D2  Case 0 (compound receiver) emits its primary edge and short-circuits
      without the interface-dispatch fan-out Case 4 performs. A struct
      field receiver `s.orderRepo` contains a dot and so always takes
      Case 0; a local or parameter receiver is a bare name and reaches
      Case 4.

Every implementor in both pre-existing structural-dispatch fixtures uses a
VALUE receiver, and the one pointer-receiver type is pinned as a negative
(`not.toContain('PointerOnlyThing -> PointerOnly')`), so the corpus could
not see D1 by construction. The new fixture is pointer-receiver
throughout, cross-package, and carries concrete-field controls in the same
structs.

Failing-first, verified against this tree: 7 of the 11 new assertions fail
and 4 pass. The 4 that pass are exactly the controls that must not
regress — the primary edge to the interface declaration, the concrete-field
call, the absence of fan-out on a concrete field, and the partial-signature
negative — so the suite discriminates rather than merely failing.

Two recorded artifacts move here because the FIXTURE was added, not
because capture output changed:

  - test/fixtures/go-captures-golden/expected-captures.json — regenerated
    additively (32 insertions, 0 deletions).
  - bench/scope-capture/baselines.json — go fingerprint, fixture_count
    102 -> 110.

Both are regenerated in this commit rather than deferred to the end of the
series: the fixture is their only cause, no later commit touches capture
emission, so they cannot re-drift and every commit stays green. The check
that this is corpus growth and not a capture regression is that go was the
only one of 15 language fingerprints to move on the same run.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(go): count pointer-receiver methods toward structural interface satisfaction (#2813)

D1 of two stacked defects. `buildDetectionIndexes` skipped every method whose
receiver is a pointer, so a struct declaring `func (r *OrderRepo) DeleteItem(...)`
had an EMPTY method set, structurally satisfied nothing, and produced no
IMPLEMENTS edge at all.

Go's method-set rule is per-type, and there are two types involved: the method
set of `T` holds only value-receiver methods, while the method set of `*T` holds
both. #1966 implemented the `T` reading, which is exactly right for `T` — and
leaves `*T` permanently empty. GitNexus models one Struct node per type with no
separate `*T` node, so only one of the two can be represented, and the `T`
reading is the one idiomatic Go almost never uses: methods take pointer
receivers so they can mutate, and `*T` is what gets stored in an interface-typed
field.

The cost was silence rather than caution. With no IMPLEMENTS edge, a call
through an interface-typed field resolved to the interface DECLARATION and
`impact()` on the implementing method returned 0 callers — byte-identical to a
symbol that genuinely has none, which is what made the reporter's blast-radius
check unusable rather than merely incomplete.

This picks the `*T` reading: the graph now answers "which types provide this
interface's behaviour", and no longer proves `var x I = T{}` invalid. The trade
is deliberate and was checked against every consumer of IMPLEMENTS before being
made — MRO/METHOD_IMPLEMENTS derivation, community clustering, the
receiver-dispatch fan-out index, and the epistemic heritage probe. None performs
value-assignability checking.

Two negative pins encoded the #1966 decision and are REVERSED here rather than
deleted, each keeping a comment that explains why the polarity moved:
  - go.test.ts: `PointerOnlyThing -> PointerOnly` now expected to be emitted.
  - go-hooks.test.ts: the pointer-receiver-only unit case now expects the
    implementor instead of `undefined`.

`goReceiverKind` is still stamped in method-owners.ts — it is the hook a future
value/pointer-aware model would read — but is deliberately no longer a filter.
Its now-dead local predicate and type alias are removed so the file no longer
carries a helper asserting the reverted rule.

Measured on the #2813 fixture, this commit alone: the two IMPLEMENTS assertions
flip to passing (6 pass, up from 4) while the five interface-dispatch fan-out
assertions still fail — those are D2, fixed in the next commit. Keeping the two
commits separate is what makes that attribution visible.

Go unit suite: 91 passed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(resolution): fan out interface dispatch from a compound receiver (#2813)

D2 of two stacked defects, and the one that closes the issue. Case 0
(compound receiver) emitted its primary edge and short-circuited without the
interface-dispatch fan-out that Case 4 performs, so a call whose receiver is a
struct FIELD stopped at the interface's method DECLARATION and never reached
any implementation.

The gap was a property of receiver SYNTAX rather than of types. Case 0 is
selected by `receiverName.includes('.')`, so a field receiver (`s.orderRepo`)
always lands there, while the very same interface reached through a local or a
parameter is a bare name and falls through to Case 4 — which fans out
correctly. Field-held interfaces, i.e. dependency injection, were the half that
silently lost every implementation edge; the pre-existing fixtures exercise the
local and parameter forms only, which is why the suite was green.

The fix is the call Case 4 already makes, placed after Case 0's primary
`tryEmitEdge` and before its `handledSites.add`. It stays language-agnostic
(AGENTS.md section 42): `emitInterfaceDispatchFor` self-gates on
`ownerDef.type !== 'Interface'`, so a receiver that folds to a Struct emits
nothing extra and no language check is needed. Confidence is Case 0's own 0.85
literal, not Case 4's site.kind-dependent value — Case 0 has no read/write arm
to mirror.

The case ladder itself is untouched: invariant I4 in contract/scope-resolver.ts
makes the ordering a contract, so the fan-out is added INSIDE Case 0 rather
than by reordering or merging cases.

Also flips a second, previously unnoticed encoding of the #1966 value-only
reading that the full sweep surfaced: the exact-set assertion at
go.test.ts:361 enumerates every structural IMPLEMENTS edge, and D1 correctly
adds `PointerOnlyThing -> PointerOnly` to it. It is D1 fallout rather than D2's,
but D1 had already landed; recording it here with its reason beats amending a
commit whose separate measurability is the point.

Measured:
  - #2813 suite: 11 of 11 pass (was 7 failing after D1 alone, which fixed only
    the two IMPLEMENTS rows).
  - go.test.ts: 160 passed.
  - Full cross-language sweep, test/integration/resolvers: 3027 passed,
    1 skipped, across 52 files. The single failure in that run was the
    exact-set assertion above, fixed here; no other language regressed.

`detect_changes` rates this HIGH (6 affected flows, all EmitReceiverBoundCalls
at step 1) — inherent to editing a hub symbol in the resolution pipeline. The
sweep above is the empirical answer to that label.

An existing index must be re-analyzed to show the new edges; this changes what
the resolver produces, not how it is stored, so no SCHEMA_BUMP applies.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(go): pin the heritage edges that make impact() hedge an interface-bound count (#2813)

The epistemic half of the issue, resolved by MEASUREMENT rather than by new
code, and pinned at its mechanism.

The reporter's disqualifying complaint was that `impact()` reported
`impactedCount 0, epistemic "exact", risk LOW` for a method reachable only
through an interface-typed field — byte-identical to what it reports for a
symbol that genuinely has no callers. A zero therefore could not be used
defensively, which was the entire use case.

That verdict comes from `computeEpistemicBoundary`, which has two producers and
neither fired: the call sites were not DROPPED (they resolved, just to the
interface declaration, so the #2744 receiver-typing producer saw nothing), and
its heritage probe walks IMPLEMENTS/METHOD_IMPLEMENTS edges out of the queried
symbol — of which there were none, because the pointer-receiver exclusion (D1)
meant no such edge was ever emitted.

Restoring those edges fixes the epistemics as a side effect, so the planned
conditional change to local-backend.ts is NOT needed. Measured on this fixture
against the fixed tree:

  impact(OrderRepo.DeleteItem, upstream)
    before: impactedCount 0,  epistemic "exact"
    after:  impactedCount 3,  epistemic "lower-bound", with an interface
            boundary note; the three callers are OrderHandlers.Delete,
            PickService.StartSession and WaveService.Release — all correct.

  impact(CartRepo.Get, upstream)  [concrete receiver, no interface]
    after:  impactedCount 1,  epistemic "exact"

The second row is the one that matters for trust: the hedge discriminates
instead of firing on everything, so "exact" still means exact.

This test asserts the METHOD_IMPLEMENTS edges the probe walks. Pinning the
mechanism keeps the resolver suite from reaching into the MCP layer while still
failing loudly if the edges regress; the impact() numbers above are recorded in
the commit message and PR body rather than re-asserted here.

#2813 suite: 12 passed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(go): model Go method sets exactly so interface satisfaction is decidable (#2813)

Replaces the approximate structural-interface model with the rules the Go spec
actually defines, so the graph answers what the compiler answers instead of a
useful-but-wrong summary of it. Three answers were provably wrong before; all
three are now exact and covered.

Method sets (go.dev/ref/spec#Method_sets):
  MS(T)  = methods declared with receiver T
  MS(*T) = methods declared with receiver *T OR T

Promotion (#Struct_types):
  S embeds T  -> MS(S) and MS(*S) get promoted methods with receiver T;
                 MS(*S) ALSO gets those with receiver *T
  S embeds *T -> MS(S) AND MS(*S) both get receiver T or *T

Identifier identity (#Uniqueness_of_identifiers): "Two identifiers are different
if they are spelled differently, OR IF THEY APPEAR IN DIFFERENT PACKAGES AND ARE
NOT EXPORTED."

  func (b *Base) Ping()      // pointer receiver
  type ByValue struct{ Base }
  type ByPointer struct{ *Base }

  type            before          exact answer
  Base            IMPLEMENTS      only *Base implements
  ByValue         IMPLEMENTS      only *ByValue implements
  ByPointer       IMPLEMENTS      the VALUE type implements

All three were the same edge. Two of the three were wrong, and nothing in the
graph could tell them apart.

Worse, in a different direction:

  package sealed;  type Sealed interface { seal() }
  package foreign; func (t *T) seal() {}

`foreign.T` cannot implement `sealed.Sealed` in Go — `seal` is unexported, so the
two identifiers are DIFFERENT. Matching on the bare name emitted a FALSE
IMPLEMENTS edge, and the interface-dispatch fan-out then turned it into an
impossible CALLS edge. That is the entire basis of the sealed-interface idiom.

- `methodSetKey` qualifies UNEXPORTED method names with their declaring package,
  leaving exported names unqualified (which is what makes cross-package
  satisfaction work at all). Exactness, not a heuristic: the sealed case now
  emits no edge, while the legitimate same-package implementor is retained.
- `collectStructMethodEntries` builds MS(T) and MS(*T) together and applies the
  promotion table above. The embed FORM is load-bearing, so it is now captured:
  `@reference.embedded-pointer` records `*T` versus `T`, which the parser
  previously discarded (the `*` is an unnamed token).
- Detection returns `{ structDefId, receiverForm }`. `receiverForm: 'pointer'`
  means the value type does NOT implement and only `*T` does — the fact
  `var x I = T{}` turns on.
- The form rides in the edge `reason` (`-structural-implements-pointer`).
  Relationships carry no arbitrary properties, so a new field would change the
  relation DDL, move SCHEMA_FINGERPRINT and force a rebuild for a fact a string
  already expresses. Value-form implementors keep the ORIGINAL unsuffixed
  reason, so a consumer matching the old string now sees exactly the assignable
  set — which is what that string always claimed to mean.

- `emitInterfaceDispatchFor` walks the SUBTYPE CLOSURE (IMPLEMENTS + EXTENDS) and
  skips bodiless declarations, instead of stopping at depth 1. Two reproduced
  Java shapes emitted an edge to a second abstract declaration while the only
  class with a body got nothing: a sub-interface that re-declares the method, and
  an abstract base between interface and implementation. Both now reach the
  implementation and neither emits the declaration edge.
- The fan-out is bounded by `MAX_INTERFACE_DISPATCH_FANOUT` (32,
  `GITNEXUS_MAX_INTERFACE_DISPATCH_FANOUT`) and reports what it dropped, mirroring
  `MAX_PROPERTY_DISPATCH_FANOUT`. A bare cap would silently discard valid dispatch
  targets, which is the same false-safe silence this issue is about.
- Corrects a rationale comment that was factually wrong about the code 70 lines
  above it (Case 0 DOES branch on `site.kind`, at :713-716; what it lacks is a
  read/write branch in its reason/confidence computation).
- Updates both copies of the case-ladder contract, which still described the
  fan-out as Case-4-exclusive.

The embed-pointer marker is PARSE-TIME capture emission, so a warm cache would
replay the pre-marker capture set and the distinction would never appear —
silently, the v27/v30 failure mode. 43 and not 40 because origin/main allocated
40, 41 and 42 while this branch was in review, which is exactly the window this
file's history records both prior EXACT clashes landing in. Pin moved with it.
RE-CHECK AGAINST origin/main IMMEDIATELY BEFORE MERGE.

- Go unit: 93 passed, including new rows pinning that `populateGoOwners` stamps
  `goReceiverKind` (previously the field had no reader and could rot silently)
  and that a pointer-receiver-only type implements in POINTER form only.
- Cross-language sweep, test/integration/resolvers: 3034 passed, 1 skipped,
  52 files, zero regressions.
- scope-capture bench: PASS (15 languages). Go is the ONLY fingerprint that
  moved, which is the check that this is a Go capture change and not a
  cross-language regression; rebaselined with rationale.
- Also closes review gaps in this PR's own tests: the concrete-field control was
  vacuous with respect to the type gate (repointed at a struct that IS an
  implementor), the two-service-file row could not distinguish the two files it
  is named for (both ends now file-qualified), plus new rows for signature
  mismatch, emitted confidence, and an exact N-by-M fan-out bound.

An existing index must be re-analyzed; the schema bump forces it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 21:52:37 +01:00
Gergő Magyar
c1103f38f2
fix: type an inference-typed class field so it can act as a call receiver (#2807) (#2810)
* test(helpers): add the shared temp-repo lifecycle helper

`createTempDirPool` gives a suite one owner for its temp fixture repos —
create on demand, remove them all in one `afterAll` — instead of a hand-rolled
mkdtemp/rmSync pair per file. The PDG receiver pin added in the next commit
uses it.

Cherry-picked verbatim from ec36c6dda on the #2802 branch, where it was
extracted to collapse five hand-rolled cleanups. Identical content, so if both
branches land the add resolves as a duplicate rather than a divergence.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(typescript): type a class field from its initializer so it can be a receiver

A field whose type had to be inferred from its initializer produced no CALLS
edge at all — not a truncated chain, nothing. `this.p.inner().compute(x)` lost
`Outer.inner` too, an ordinary named-receiver call, because `typeOfMemberOnClass`
found no `typeBindings` entry for `p` and `foldReceiverChain` declines at its
first untypeable step rather than folding on a guessed owner.

The initializer was never invisible: `new Outer()` emitted its own constructor
edge exactly as the annotated twin does. What was missing was the step turning
that initializer into a TYPE BINDING, i.e. capture patterns for the two shapes
the query never covered:

  private p = new Outer();                       // public_field_definition value:
  private p; constructor() { this.p = new … }    // this.<field> = new …

Both are `@type-binding.constructor`, so `annotation` still outranks them in
`typeBindingStrength` and an annotated field keeps resolving through its
annotation. The assignment form carries a narrow `@type-binding.this-field`
marker on its `(this)` node — anchorCaptureFor takes the broadest range, so the
statement stays the anchor — which `tsBindingScopeFor` reads to hoist the
binding onto the Class scope, the only place `typeOfMemberOnClass` looks. The
marker must stay specific to that pattern: hoisting every constructor-inferred
binding would move method-local `const o = new Outer()` out of its own scope.

Kotlin and Swift needed no such pattern for the initializer form because one
grammar node (property_declaration) covers both a local and a stored property;
TypeScript splits them, and only the local half was ever covered.

Both self-diffing pins flip and gain rows: a method-assigned field, and a
deliberately mistyped `private p: Mismatch = new Outer()` that asserts the
source-strength tie-break executably. That row also pins a pre-existing
artifact — `Inner.compute` still resolves through the hoisted module-level
return-type binding — verified byte-identical on the pre-fix tree.

Fixes #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(javascript): type a class field from its initializer so it can be a receiver

JavaScript has no field annotations at all, so a class field's type can only
ever come from its initializer — which made this the strictly worse half of
#2807: `class C { p = new Outer(); }` gave `this.p` no type, and
`this.p.inner()` emitted nothing.

`synthesizeConstructorFieldBindings` in captures.ts already covered the sibling
shape, `this.p = new Outer()`, which is why THAT row resolved — but it only
walks `constructor` bodies, so a field initialized at its declaration matched
no pattern anywhere.

Adds the `field_definition` + `value: (new_expression)` patterns (the JS grammar
names the field `property:`, not `name:`), anchored so the binding lands in the
class body scope where `typeOfMemberOnClass` reads it. No hook change needed:
`jsBindingScopeFor` already delegates to `tsBindingScopeFor`, so it inherits the
`@type-binding.this-field` branch too.

Measured: `InferredField.run` now emits `Outer.inner`, exact parity with both
the local-const control and the constructor-assigned row. The second chain link
(`Inner.compute`) stays absent in ALL THREE rows — that is JavaScript's separate
return-type-inference gap, not this one.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(python): infer an instance field's type from the constructor it calls

`self.outer = Outer()` in `__init__` bound nothing, so `self.outer.inner()`
had no receiver type and the fold declined the whole chain — the Python half
of #2807. An annotated field (`self.outer: Outer = ...`) or one assigned from
an annotated parameter already worked.

`synthesizeConstructorFieldTypeBindings` deliberately refused to infer "from
arbitrary unannotated RHS expressions ... not a name-only guess". A CALL is not
that: Python has no `new`, so a call to a plain (or dotted) name is the only
syntactic construction form there is, and it is the same positive evidence
every other language reads from `= new X()`. A bare name, subscript, await or
comprehension is still refused.

Adds it as a THIRD and weakest tier. The existing explicit/parameter boolean
becomes a rank, so precedence is now explicit annotation > parameter annotation
> construction, and a later same-tier assignment still wins (the last write in
`__init__` is the live one). `interpretPythonTypeBinding` maps the new marker to
`constructor-inferred` (strength 1) — checked before the parameter branch, which
would otherwise have read the absent parameter marker as `annotation` and
promoted a guess to the strongest tier.

The Class-scope hoist needed no change: `@type-binding.instance-field` already
carries it in `pythonBindingScopeFor`.

Measured: `AssignedField.run` now emits `Outer.inner`, exact parity with the
annotated-field and local-const rows.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(ruby): infer an instance variable's type from the constructor it calls

`@service = UserService.new` in `initialize` bound nothing, so `@service.inner`
had no receiver type and the fold declined the whole chain — the Ruby half of
#2807. An instance variable is the ONLY way a Ruby object gets a field, and
Ruby has no annotations, so this was the single shape that could have worked
and did not: the existing constructor-inferred patterns bind a local
(`x = Foo.new`) and a constant (`SERVICE = Foo.new`), never an ivar.

Adds the plain and `Foo::Bar` qualified ivar forms. `@type-binding.name` is
captured on the `instance_variable` node so the bound name keeps its `@` sigil
and matches the receiver text at the call site verbatim — the resolver compares
spellings, and `service` would never have matched `@service`.

`rubyBindingScopeFor` gains a Class hoist gated on a narrow
`@type-binding.ivar-field` marker riding the same node: an ivar declares a field
of the enclosing class, so the binding must live on the Class scope or no other
method can see it. Gated on the dedicated marker, never on
`@type-binding.constructor` at large, which also fires for `x = Foo.new` locals
that must stay in their own method.

Measured: `AssignedField.run` now emits BOTH chain links, exact parity with the
local-const control.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(resolvers): pin inference-typed field receivers across eight languages

#2807 was filed against TypeScript, but the defect class is cross-language:
"can a field whose type is inferred act as a call receiver". This measures all
eight languages where the shape exists at all, in one table.

The metric is parity with EACH LANGUAGE'S OWN CONTROL ROW, not "both chain
links present". JavaScript, Python, Dart and PHP lose the second link
(`Inner.compute`) even for a plain local, because nothing annotates `inner()`'s
return type — a separate return-type-inference gap. Scoring against "both
links" would have accused those four of a bug they do not have; scoring against
their own control isolates the field-typing question cleanly.

Recorded state: TypeScript, JavaScript, Python and Ruby now match their
controls. Kotlin and PHP already did before #2807 and are pinned so the shared
fold cannot regress them unnoticed — the languages that got receiver typing for
free are precisely the ones nobody re-checks.

Two rows stay pinned BROKEN, at their exact current value:

  Dart  — real and narrow: the annotated control resolves, the inferred one
          does not. Its bindings are synthesized in dart/captures.ts rather
          than by a query, so the fix is its own change.
  Swift — blocked by a different defect found while measuring: with several
          classes each defining `run`, every `run`'s edges are attributed to
          the FIRST-declared one, which collects duplicates while its siblings
          — including the ANNOTATED control — collect none. Receiver typing
          cannot be measured there until that is fixed, and "fixing" it against
          this observable would be fitting to a broken measurement.

Both gap rows carry a `callerExists` probe in the same assertion object, so an
empty list can never read as "resolved fine, wrong node id", plus a whole-matrix
guard that every language keeps a resolving control — that is what makes a gap
row mean "broken" instead of "fixture never worked".

Targets are deduplicated before comparison: Swift emits one edge more than once
per call site, and edge multiplicity is a different question from whether the
receiver typed at all.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(python): a method call on the receiver is not a construction

Review finding on f4e1ead0d. `constructorCallTypeName` accepted ANY call with
an identifier or attribute callee, so `self.p = self.build()` bound `p` to the
non-type `"self.build"` — and because that shares the weakest tier with a real
construction, a later such assignment DISPLACED an earlier `self.p = Outer()`
and left the field untyped again.

Measured before the fix: `self.p = Outer()` followed by `self.p = self.rebuild()`
emitted no CALLS edge at all from a method chaining off `self.p`, and
`self.q = self.make()` bound a type name that resolves to nothing. After:
the real construction survives the reassignment, and a pure method call binds
nothing rather than something wrong.

Rejects a callee rooted at the receiver name. `models.Outer()` still binds —
only `self`-rooted callees are refused, which is exactly the method-call shape.

The matrix gains a `reassigned-from-method-call` row that fails without this
rejection; that discrimination is the only reason the row exists.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(swift): resolve a method def to its own node when the labels disagree

Two classes in one Swift file each declaring `func run` collapsed onto one
node: every call in BOTH bodies was attributed to whichever `run` registered
first, which collected duplicate edges while its twin collected none. Renaming
one method fixed it; moving it to another file fixed it; so the collision was
name-keyed and per-file, not positional.

Root cause is a LABEL split, not a name. Swift's structure phase emits a type's
methods as `Function` nodes, while the scope extractor derives `Method` from the
`@declaration.method` anchor. Every key in `resolveDefGraphId` — qualified,
parameter-types, arity, shape — is label-scoped, so such a pair misses all of
them and lands on the bottom fallback, `simpleKey(filePath, name)`, which is
deliberately label-agnostic and first-write-wins.

Fixed at both ends:

  - Swift qualifies a method def as `<Type>.<method>`, matching the qualifier
    the structure phase already encoded in the node id. `class`, `struct` and
    `extension` all parse to `class_declaration`, so one ancestor walk covers
    them; a generic `class Box<T>` and an `extension Foo` wrapping a `user_type`
    both reduce to the bare owner name.
  - The bridge retries the qualified keys under the sibling callable label.
    Gated on the name containing a dot: `A.run` names one construct whatever the
    label, while a bare `run` is exactly the top-level-vs-method aliasing the
    label was added to prevent, so the original guarantee is untouched.

This also unmasked Swift's #2807 row. `let p = Outer()` had always bound
correctly — its edges were being credited to the wrong caller, so the
inference-typed receiver looked broken when it was not. `InferredField.run` now
emits `Outer.inner`, matching its control.

Verified on the full resolver + CFG suite: 3165 passed, 0 failed, against a
3164-passing baseline.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(dart): declare inference-typed class fields so they can be receivers

`var b = Outer();` produced no `@declaration.property` capture at all — no
Property node, and nothing for the capture layer to hang a type binding on — so
`b.inner()` could not type its receiver while the annotated twin
`Outer b = Outer();` resolved fine (#2807).

The gap was in the query, one layer below where the binding is emitted: both
class-field patterns require a leading `(type_identifier)` or `(nullable_type)`,
i.e. a WRITTEN type. Dart puts the keyword there instead for an inferred field,
and spells it two ways — `inferred_type` for `var`, `final_builtin` for `final`
and `late final`. Covering only `var` would have left the more idiomatic Dart
style broken, so both are matched.

With the field declared, the capture layer types it from the constructor its
initializer calls, as `constructor-inferred` — the weakest source, and the
annotated branch returns before it, so an annotated field is untouched. Only a
direct construction is accepted (a bare identifier followed by a `selector`
carrying an `argument_part`, the same shape `findDirectCallValue` accepts for
locals); a literal, member call or await is left alone rather than guessed at.

Note this is the LOCAL/field split that made the gap invisible: `emitVarTypeBinding`
already handled `initialized_variable_definition`, but a class field is
`declaration(<keyword>, initialized_identifier_list(initialized_identifier))`.

`InferredField.run` now emits `Outer.inner`, matching its control. Dart's
`var r; C() { r = Outer(); }` shape stays pinned as a known gap: Dart writes the
field with no receiver prefix, so binding it means treating assignment to a bare
identifier as a field write, indistinguishable from a constructor-local.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(resolvers): record Swift and Dart reaching parity in the matrix

Both languages' inference-typed field rows move from KNOWN GAP to resolving,
which is the self-diffing signal this file was built to produce: closing either
gap failed it with the newly resolved ids in the diff.

The header table and prose are corrected together with the rows, as the file's
own instructions require — including WHY Swift moved. Its `let p = Outer()`
binding had always been correct; a separate label-split defect attributed the
second same-named method's calls to the first, which masked this row entirely.
Recording that is the point: a future reader comparing the table against the
code needs to know the row was never a receiver-typing failure.

One row stays pinned: Dart's `var r; C() { r = Outer(); }`. Dart writes fields
without a receiver prefix, so binding it means treating assignment to a bare
identifier as a field write — indistinguishable from a constructor-local until
the field set is known. Idiomatic Dart writes `final r = Outer();`, which the
inferred-field row now covers.

Every language keeps its resolving control row, so the remaining gap still means
"broken" rather than "fixture never worked".

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(dart): type a field from a constructor assigned to it

`var r; C() { r = Outer(); }` bound nothing, so `r.inner()` had no receiver
type — the last inference-typed field shape still failing after the initializer
form was fixed (#2807).

Dart is the one language here that writes a field with NO receiver prefix, so
`r = Outer()` inside a constructor is syntactically identical to assigning a
constructor-local. That ambiguity is why this was initially left pinned — but
the field set IS knowable: the class body declares `var r`, which the
initializer fix already turned into a property declaration. So a bare name binds
exactly when Dart itself resolves it to the field: the enclosing class declares
it AND the enclosing body declares no local of that name. A `this.`-prefixed
write is unambiguous and needs neither test.

The shadowing case is asserted, not assumed: with a body-local `var s = Outer()`
in scope, the field stays unbound while the local still resolves on its own.

Binds `constructor-inferred` (weakest source, so an annotation still wins), and
only for a direct construction — an identifier followed by a `selector` carrying
an `argument_part`, the same shape accepted for locals. The narrow
`@type-binding.dart-field` marker drives the Class-scope hoist in
`dartBindingScopeFor`; gating on it rather than on `@type-binding.constructor`
at large is what keeps genuine locals in their own scope.

All three shapes now match their control: bare `r = Outer()`, `this.s = …`, and
a non-constructor `setUp()` assignment.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(swift): type an optional field and read through its force-unwrap

Swift cannot declare a stored property with neither a type nor an initializer,
so its "declare now, assign in init" idiom is an OPTIONAL field read back
through a force-unwrap. That shape resolved nothing, and it was broken in two
independent places — each alone leaves it broken:

  1. `var a: Outer?` parses as `type_annotation(optional_type(user_type(…)))`,
     but the property-annotation pattern required the `user_type` to be a DIRECT
     child, so an optional field was never typed at all. The pattern added here
     captures the INNER `type_identifier`, so the binding is `Outer` without
     relying on `stripOptional` reducing an `Outer?` spelling.
  2. `self.a!` is a `postfix_expression`, which the receiver walk did not peel,
     so even a typed field could not be read through the unwrap.

For (2), `postfix_expression` is NOT added to `TRANSPARENT_RECEIVER_WRAPPERS`
outright: unlike TypeScript's `non_null_expression` — which is only ever `!` —
Swift's node also carries user-defined postfix operators, which can return
anything. Peeling those would type the receiver as the operand and mint a
confidently WRONG owner, the failure mode compound-receiver.ts calls strictly
worse than no edge. So the peel is operator-gated: transparent only when the
node's text ends in `!`, which is provably type-preserving.

Verified: force-unwrap `self.a!.inner()`, optional chain `self.b?.inner()`, and
the plain annotated field all resolve; previously only the plain one did.

The gate keeps this off every other language — `postfix_expression` is not a
node type the other grammars produce here — and the full resolver + CFG suite is
green at 3166 passed / 0 failed, against a 3165 baseline.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(resolvers): close the last two matrix gaps

Dart's `assigned-field` and Swift's new `optional-assigned-field` rows now
resolve, leaving no known-gap row in the matrix: every language reaches parity
with its own control on both the initializer and the assigned shape it can
express.

The Swift row is new because the shape it covers did not exist in the fixture:
Swift cannot declare a stored property with neither type nor initializer, so its
assigned form is an optional field written in `init` and read through a
force-unwrap — a shape that needed both an optional-annotation pattern and an
operator-gated receiver peel, which is why the row's comment names both.

The header records how the two hard cases were fixed, including the Dart
shadowing rule the fix depends on: a bare `r = Outer()` binds only when the class
declares that field and the body declares no local of the same name.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* chore(bench): rebaseline the receiver-resolution and scope-capture gates

Both gates are exact-match, so the improvements in this branch fail CI until the
baselines move and the movement is explained. Caught by running the CI gates
locally — the resolver and CFG suites are green throughout and never see these.

receiver-resolution — three shapes moved to RESOLVES, no drop-count changed:

  ruby.fieldReceiverCall     INVISIBLE-GAP -> RESOLVES  (`@ivar = Foo.new`)
  swift.decoratedFieldType   INVISIBLE-GAP -> RESOLVES  (`var a: Outer?`)
  kotlin.nonNullAssert       VISIBLE-GAP   -> RESOLVES  (`x!!` receiver)

scope-capture — swift and typescript fingerprints, both ADD captures and remove
none; the per-language `_rebaselined_inferred_field_receiver_2807` notes carry
the detail and the prior digests. The other 13 languages are unchanged, which is
the check that this is the intended emission and not a capture regression.

CORRECTION to d5d878033's message, which claimed the operator-gated
`postfix_expression` peel "keeps this off every other language — postfix_expression
is not a node type the other grammars produce here". That is wrong: Kotlin's
grammar produces it too, and `kotlin.nonNullAssert` moving to RESOLVES is the
proof. The peel is still correct there — Kotlin `!!` is a non-null assertion with
exactly the type-preserving semantics the `!` gate tests for — but it is a
BEHAVIOUR CHANGE IN KOTLIN, not Swift-only as stated. The gate is what surfaced
it; the claim should have been verified rather than asserted.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(cache): bump SCHEMA_BUMP for the six-language capture change, + review fixes

SCHEMA_BUMP 39 -> 40. THIS IS THE MERGE-BLOCKER of the review: every language
change in this PR is PARSE-TIME capture emission, and `analyze` skips tree-sitter
dispatch for byte-unchanged chunks (GUARDRAILS.md:34), so a warm cache replays
the pre-fix capture set verbatim and the new receiver edges never appear —
silently, no error. Exactly the v27/v30 failure mode this file already documents.
The PR description's claim that "no schema or version constant applies" was
wrong on both counts: a bump IS required, and a plain re-analyze does NOT
surface the captures without it. Re-check against origin/main before merging —
main was also at 39 when 40 was allocated, and this file records eight prior
collisions.

Also from the review:

- dart/simple-hooks.ts hand-rolled a 9-line parent walk byte-identical to the
  shared `walkToScope(innermost, tree, 'Class')` that TypeScript and Ruby call
  in one line in this same PR. Now uses the helper.
- utils/call-analysis.ts: the doc framed the postfix-`!` peel as Swift-only. It
  is not — Kotlin `!!` parses as the same node and is peeled too, which the
  receiver-resolution bench proved (kotlin.nonNullAssert VISIBLE-GAP ->
  RESOLVES). The comment now says so, and names the `!` gate rather than the
  language as the bound.
- test/helpers/temp-dir-pool.ts: its doc claimed four consumers; on THIS branch
  only `pdg-chained-receiver-callees` uses it (the other three convert on
  #2802). Corrected, and the byte-identical-to-#2802 intent recorded.
- inferred-field-receiver-matrix: adds the Dart shadowing assertion the header
  comment already CLAIMED to make but never did. First attempt was vacuous —
  `var s = Outer()` is a declaration, so it never produced the bare
  `assignment_expression` the guard inspects; removing the guard did not fail
  the row. Fixture corrected to `var s; s = Outer();`, and mutation-verified:
  guard present 35 pass, guard removed the row goes red.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(cache): move the SCHEMA_BUMP pin to 40

The pin at incremental-parse-cache.test.ts asserts the exact value on purpose —
it exists to catch two branches claiming one number, and it has earned that
eight times. Bumping the constant to 40 without moving the pin turned it red.

Found by the Codex (gpt-5.6-sol) review leg, which flagged it as a
deterministic committed-test failure. The Claude lanes could not have caught it:
they were dispatched before the bump landed.

The comment now records the 39 -> 40 movement and its reason, matching the
existing convention in that block.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(dart): treat every binder as a field shadow, not just local declarations

Review P1, reproduced by two independent reviewers. `emitDartFieldAssignmentBindings`
binds a bare `r = Outer()` to the FIELD when the class declares `r` and the body
declares no local `r` — but the shadow set was built by walking for
`initialized_variable_definition` only. That is one binder form out of many, so a
formal PARAMETER named like a field slipped through:

    void reset(Alpha r) { r = Alpha(); }   // r is the PARAMETER

retyped the FIELD to `Alpha`, fabricating an edge AND destroying the correct
`Beta` binding the constructor had established. The mutation test shows exactly
that: the pre-fix result is not a missing edge but a WRONG one (`Other.inner#0`
instead of `Outer.inner#0`) — the failure mode compound-receiver.ts:519-537 calls
strictly worse than no edge.

The node types were chosen from real grammar output, not assumed. Two facts drove
the design: formal parameters live on the SIBLING `method_signature`, never inside
`function_body`, so no walk of the body could ever have seen them; and
`formal_parameter` carries a `name` field only when typed — untyped, `this.` and
`super.` forms do not. `collectDartBodyShadows` therefore walks the signature AND
the body, collecting formal/closure/local-function/named/optional params,
`this.`/`super.` constructor params, catch bindings, for-in variables, and both
local-declarator forms. A parameter shape whose name cannot be read contributes
nothing — declining to bind is the safe direction.

A 27-case binder sweep passes: 26 shadow shapes bind nothing, the no-binder
control still binds.

Four new matrix rows (param, closure param, catch, loop var) assert a surviving
POSITIVE target rather than an empty list — deliberately, because the pre-fix
value is a different non-empty target, so these rows cannot pass vacuously the way
an empty-assert row can. Mutation-verified: reverting captures.ts turns exactly
those four red and leaves every pre-existing row green.

SCHEMA_BUMP is already at 40 on this branch for the six-language capture change and
has not shipped, so it covers this too; re-check against origin/main before merge.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(ruby): don't bind a class-object @ivar as an instance field

Review P1. The `@ivar = Foo.new` patterns added on this branch hoist to the
enclosing Class scope without asking WHOSE `self` owns the ivar. In Ruby an ivar
written in singleton context belongs to the class object, not to instances, so

    def self.build; @pool = Alpha.new; end
    class << self; def make; @cache = Alpha.new; end; end

bound `@pool`/`@cache` as INSTANCE fields, fabricating edges from instance methods
that read an ivar which is never assigned on an instance.

Three corrections came out of fixing it:

1. The detection premise was wrong. `def self.build` is NOT a `method` node with a
   `self` receiver — it is its own node type, `singleton_method`, and
   `childForFieldName('receiver')` returns NONE on it. Matching on a receiver field
   would have detected nothing, silently. Detection is by node type:
   `singleton_method` / `singleton_class`.

2. A THIRD form exists that the review did not name: a class-body-level
   `class C; @shared = Outer.new;` is the same defect (self is the class object),
   and is likewise new on this branch — before it, `left: (instance_variable)`
   matched nothing at all.

3. Dropping only the `@type-binding.ivar-field` marker is NOT sufficient, and the
   class-body case is what proves it: with the marker gone the binding falls back
   to its innermost scope, which at class-body level ALREADY IS the Class scope, so
   it still lands in the wrong place. The whole match is therefore discarded.

The check lives in `languages/ruby/captures.ts` because `Capture` carries only
`{name, range, text}` — no AST node — so `rubyBindingScopeFor` structurally cannot
ask whose `self` owns the ivar. All Ruby logic stays under `languages/ruby/`.
`method` alone is not a sufficient "instance" signal, since a `def` inside
`class << self` is reached through a `method` node first.

Cost relative to main is zero: a class-object ivar goes back to binding nothing,
exactly as before these patterns existed.

The three new rows are structurally two-sided, not just mutation-checked: each
empty row is paired with a non-empty `*-instance-ivar` row on the SAME fixture
class, so breaking the hoist entirely turns the partner red while an unconditional
hoist turns the empty row red. Mutation-verified in both directions.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(typescript,javascript): bind `this.field = new X()` only inside a class method

Review P0, the most serious finding of the tri-review and reproduced by two
independent reviewers. The `this.<field> = new X()` patterns added on this branch
were CONTEXT-FREE: they matched anywhere in the file, and `tsBindingScopeFor`
hoisted to the nearest enclosing Class without asking whose `this` that was. Since
the binding lands on the same Class scope with the same `constructor-inferred`
source as the field-initializer pattern, and pass4CollectTypeBindings prefers the
later match on `>=`, it OVERWROTE the class's real field type. Reproduced from a
non-arrow callback, an object-literal method, a static method, and module level.

Fixed STRUCTURALLY, in the query: both patterns are now nested under
`class_body -> method_definition -> body: (statement_block) -> (expression_statement)`,
which kills the callback, object-literal and top-level triggers with no runtime
code and mirrors JavaScript's `synthesizeConstructorFieldBindings` discipline.
TypeScript still accepts ANY method, not just `constructor`, so the setter case
this branch deliberately supports keeps working.

`static` needed one emit-side guard: it is an ANONYMOUS token on `method_definition`
with no field name, and tree-sitter patterns cannot negate an anonymous token
(checked against node-types.json), so `isStaticMethodThis` drops it in captures.ts.
`simple-hooks.ts` is comment-only — the unconditional Class hoist is now documented
as safe BECAUSE the marker's producers are bounded, with a note that widening them
means re-establishing that.

Also fixes a `.ts`/`.js` disagreement the narrowing itself created: JavaScript's
synthesis matched `method_definition` ANYWHERE, so an object literal containing a
method named `constructor` still typed the enclosing class's field. Measured on
identical source — JS emitted `p -> Alien`, narrowed TS emitted nothing — and
closed with a `node.parent?.type !== 'class_body'` guard in javascript/captures.ts.
The two languages must not disagree about the same source.

Deliberately NOT matched (a missing binding, never a wrong one — JS declines these
too): an assignment in a nested block, or inside an arrow where `this` genuinely IS
the instance.

Evidence the narrowing removed nothing legitimate: `bench/scope-capture --check`
passes with the TypeScript AND JavaScript fingerprints BYTE-IDENTICAL. The five new
matrix rows use an `Alien` class that also declares `inner()`, so a regression SWAPS
the target rather than emptying the set — they cannot pass vacuously. Mutation
test: reverting the source turns exactly those rows red (`+ "Alien.inner#0"`,
`- "Outer.inner#0"`).

SCHEMA_BUMP stays at 40 — this PR's existing bump covers the capture change being
narrowed, and the buggy variant never shipped outside this branch.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(resolution): consult the sibling callable label in the position key too

Review P1. This branch added a sibling Method<->Function retry to the qualified
keys in `resolveDefGraphId`, but not to the #2699 POSITION key or its fail-closed
guard, which both stayed scoped to `def.type`. Since the premise of the whole fix
is that Swift defs are `Method` while nodes are `Function`, the position lookup
missed and the fail-closed guard could NEVER FIRE for exactly the case the retry
serves — so a function-local `func helper` inside `Host.run` was deterministically
aliased onto the class method `Host.helper`, even with differing arity.

Two earlier reviewers REFUTED this by arguing the guard runs before `lookupTagged`.
That is true and irrelevant: the guard is scoped to `def.type`, so in the
label-split case it is unreachable. Recording it because two independent lanes
agreeing on a refutation is not proof.

`siblingCallableLabel(label)` is now the single definition, consulted by all three
key families:
  - position key: retried under the sibling label, gated on `posHit === undefined`
    so an AMBIGUOUS_POSITION tombstone still falls through to the name keys rather
    than being resolved by relabelling. Deliberately NOT dot-gated — a position key
    is not a name, so the aliasing risk the dot gate exists for does not apply.
  - fail-closed guard: mirrored unconditionally (it only ever returns undefined).
  - qualified retry: dot gate untouched.

Measured before -> after on a Swift fixture: `Host.helper#1 -> sink` (the local
body's call credited to the public 1-arg method) becomes
`Host.run.helper@8:8#2 -> sink`, with the local's own node no longer edgeless.

SCOPE CORRECTION to the P1 report: only the first consequence is a bridge defect.
The second — "`run`'s call to the local resolves to the method" — is NOT reachable
from ids.ts. Both defs carry qualifiedName `Host.helper` and label `Method`, and
the binding hands the target side the class-member def, so the scope walk in
free-call-fallback picks the member. No def->node mapping can change that; it is
pinned as an explicitly labelled KNOWN GAP rather than left implied.

Verification, on shared code so the full bar: resolvers+cfg 3170 passed / 1 skipped
/ 0 failed; `bench/receiver-resolution --check` OK; `bench/scope-capture --check`
PASS (15 languages, Swift fingerprint unchanged) — i.e. the bridge change altered
no capture output. The 3170 reconciles against the 3167 pre-existing at a5bf4c2da
plus exactly 3 new tests; 3167 differs from the older 3166 baseline because
0418b0aac added the matrix's only known-gap row, which emits one extra `it`.

Mutation test: with both arms reverted, 3 of the 5 new cases go red, each arm
pinned independently — the guard case registers no position key, the position case
registers no local-name key.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: apply cleanup-review findings across the receiver-typing change

Four parallel quality lanes (reuse, simplification, efficiency, altitude) over
`origin/main...HEAD`. Eleven fixes; both exact-match bench gates hold with every
capture fingerprint BYTE-IDENTICAL, so none of this changed what the analyser emits.

Reuse — stop re-rolling helpers that already exist:
- `walkToScope` moved out of the TypeScript provider into a language-neutral
  `utils/scope-tree-walk.ts`. Ruby and Dart had begun importing it FROM
  `languages/typescript/`, which made three unrelated providers depend on the TS
  module for a generic `Scope`/`ScopeTree` walk. Python's hand-rolled copy — the
  one this PR's new `self.x = Outer()` path routes through — is folded in, so all
  six languages now share one traversal.
- Swift stops string-parsing a type name. `swiftEnclosingTypeName` split on `<`
  and `.`; `swiftBaseTypeIdentifier` + `swiftQualifiedBaseTail` do it structurally
  and correctly skip the sibling `type_arguments` node, which the string form only
  guessed at. `findEnclosingTypeDeclaration` replaces the inlined ancestor walk.
- TypeScript uses the canonical `hasKeyword(method, 'static')`. The previous
  `child.type === 'static'` is the exact form `isStaticMember` documents as
  grammar-version-fragile: "`static` can appear as an unnamed token or as a
  keyword node depending on grammar version; check text."
- Both new test suites use `cleanupTempDirSync`, which exists because a pipeline
  test's open handle surfaces as EBUSY/EPERM on Windows and `force` does not
  suppress it. This repo shards Windows CI.

LATENT DEFECT, found by the reuse lane and fixed: `var a = X(), b = Y();` parses
as ONE `declaration` with two declarators, and the query matches it once per
declarator with the SAME node — so the first-descendant search handed every
declarator the FIRST one's initializer. `b` resolved as `X`. Now reads
`nameNode.nextNamedSibling`, which is both correct and free. Pinned by a
`multi-declarator-inferred-field` row ordered so the declarator under test is the
second; reverting the fix turns exactly that row red with the wrong edge.

Efficiency — measured, not asserted:
- Dart's shadow set was built eagerly for EVERY method body and discarded 87-100%
  of the time (a `this.`-prefixed write never reads it). Now lazy and memoised per
  body, gated on `fields.has()`. Semantics are unchanged: the set is body-wide, so
  deferring construction cannot change its contents.
  Worth recording WHY CI could never have caught this: `bench/scope-capture` gates
  the SCALING RATIO, and the work is linear — ratio stays 1.0 against a 1.5 budget
  while a constant-factor regression passes straight through.
- `isTransparentReceiverWrapper` crossed the `node.type` native getter twice on the
  common path. One hoisted read, and — since absent and ungated are distinguishable —
  one `get` replaces `has`+`get`.

Simplification:
- One `Map<string, string | null>` replaces the parallel Set + Map that both
  expressed "this wrapper is transparent", with `null` meaning unconditional.
- `ids.ts` computed `siblingCallableLabel` twice under two names. The three retry
  blocks are deliberately NOT collapsed — they use different key builders and
  materially different gates.
- Python's `interpret.ts` nesting was only a consequence of arm ORDER; swapping the
  arms is unconditionally equivalent (the two differ only when both markers are
  present, and both orders then yield `constructor-inferred`).
- One `isDirectConstruction` predicate replaces the construction-shape test that
  had been written four times in dart/captures.ts.

Deliberately NOT done, each needing a fingerprint rebaseline or new node ids:
unifying the six `@type-binding.*-field` markers into one canonical capture (it
would change Python's anchor semantics, which must be verified not assumed); a
Swift `labelOverride` mirroring Kotlin's four-line fix, which is the real cure for
the Method/Function split the bridge currently compensates for; generalising the
Swift optional-annotation pattern to `(type_annotation (_))` so the existing
strippers handle every wrapper; and merging the TS query with the JS walker, which
also carries a JSDoc branch no query can express.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(swift): regenerate the Swift captures golden for the optional-annotation pattern

CI caught what my local runs did not: `swift-captures-golden.test.ts` pins
`emitSwiftScopeCaptures` output across every `swift-*` fixture, and this branch
changes that output. It is a THIRD capture gate, separate from the two
exact-match benches already rebaselined here — `bench/scope-capture` hashes a
different corpus, so its Swift fingerprint moving did not imply this one, and
passing it was not evidence this was clean.

The drift is digest-only: 37 changed lines, 37 in each direction, no capture
entry added or removed. That is the expected shape for
`(type_annotation (optional_type (user_type …)))` making optional properties emit
an annotation binding they previously did not, plus the `@declaration.qualified_name`
now carried on Swift method declarations.

Regenerated with the mechanism the test itself prescribes (`UPDATE_GOLDEN=1`),
not by relaxing the assertion. Verified after: all Swift unit + resolver suites
green (4 files, 124 tests), and `bench/receiver-resolution --check` still exactly
matches its baseline.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix: three more wrong-owner defects, found by a second review round

A second tri-review of this PR found THREE new P1 wrong-owner defects — every one
of them in code the FIRST round had already fixed. All three are the same root
shape: an incomplete ENUMERATION of binder or scope forms. That class has now
bitten this branch four times (formal parameters, then these), so two of the
three fixes below deliberately attack the class rather than the instance.

1. DART 3 PATTERN BINDERS (P1, reproduced by two independent lanes).
   `addDartBinderName` enumerated five binder node types, and every Dart 3
   pattern form parses into node types in NONE of them — so a pattern-bound local
   did not count as a shadow and its write retyped the CLASS FIELD:
       class Host {
         var session = Cache();
         void load() { final (session, count) = (Session(), 2); }
         void use() { session.ping(); }   // resolved Session.ping, not Cache.ping
       }
   The grammar hides every rule that would carry a binder (`_pattern_field`,
   `_list_pattern_element`, `_guarded_pattern`, …), inlining children onto the
   enclosing visible pattern node, so binders land as direct `identifier` children
   of just two leaf types. Covers all 10 pattern types that can hold one; the
   eight container types are defence, since the grammar demonstrably inlines
   identifiers onto containers already.
   THE COMPOUNDING PART: a grammar-derived coverage guard reads `nodeTypeInfo` and
   fails if the grammar declares a `*pattern*` type the fixtures do not exercise.
   A grammar bump adding an 11th type now turns the suite red instead of silently
   reopening this bug a third time.

2. RUBY BLOCK-RECEIVER `self` REBINDING (P1 here, both Claude lanes + Codex, which
   rated it P2 — the engines agreed the defect is real and disagreed on severity).
   `isRubyInstanceIvarWrite` enumerated `singleton_method`/`singleton_class` as the
   ways `self` gets rebound. A `def` inside a BLOCK attaches to the block's
   receiver, so `Struct.new(:x) do def warm; @a = Beta.new; end end`,
   `Class.new do … end`, `class_eval`, and `other.instance_eval { @a = … }` all
   published onto the nearest LEXICAL class.
   Deliberately NOT fixed by listing rebinding call names: that set is OPEN —
   `def helper(&blk) = Foo.class_eval(&blk)` rebinds a block it merely receives,
   and nothing in the block's own syntax reveals it. An allow-list of "safe"
   iterators would be the same defect one level down. The rule is structural:
   crossing ANY block boundary makes ownership unprovable, so discard. Complete by
   construction rather than by enumeration.
   ACCEPTED COST, asserted not hidden: `[1].each { @shared = X.new }` in an
   instance method really is the instance's `self`, and this drops it — that block
   is syntactically identical to the `instance_eval` one. It has its own row
   (`plain-block-self-ivar`) so the loss is visible rather than discovered later.

3. STATIC FIELD INITIALIZERS (P1, found by Codex/gpt-5.6-sol, corroborated).
   A `static` field initializer was captured as an ordinary instance binding, and
   since both land on one Class scope at the same `constructor-inferred` strength,
   the later wins the `>=` tie-break — so a static field retyped the instance
   field of the same name (`this.p.hit()` -> `Wrong.hit`). Unguarded in BOTH
   `javascript/query.ts` and `typescript/query.ts`; the existing
   `isStaticMethodThis` only ever covered the `this.x =` assignment form.
   Two things surfaced while fixing it: the TS `annotation` pattern collides
   identically and is PRE-EXISTING, not introduced here; and JS `static
   constructor(){}` had no guard where TS did — the .ts/.js divergence this PR's
   own comment claimed could not happen.
   Dart has no same-name twin (the language forbids it), but a static method's
   receiver-less write named a library-level variable and DISPLACED the
   constructor's binding. Fixed narrowly, with a counterweight row
   (`static-field-declaration-still-types-its-receiver`) that goes red if anyone
   widens the guard into "drop every static binding" — reading a static by bare
   name from an instance method is ordinary Dart and must keep working.
   ACCEPTED COST: `typeBindings` has one map per Class scope with no static/
   instance split, so a static field is dropped rather than recorded separately,
   losing typing on a TS/JS `Host.p.hit()` static receiver chain. Missed edge over
   wrong edge, per compound-receiver.ts:519-537.

Every new row asserts a SURVIVING POSITIVE target, never an empty set: the pre-fix
value in each case is a DIFFERENT non-empty target, so none can pass vacuously —
the trap this branch already fell into once. Mutation-verified per fix: reverting
each turns exactly its own rows red (17 Dart, 6 Ruby blocks, 5 static) with every
pre-existing row green.

Matrix 49 -> 80 tests. Siblings 510 passed. tsc clean. scope-capture PASS (15
languages, all ratios within gate).

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(dart): mask a shadowed field on the READ side, not just the write side

The review critic refused to pass this PR while this was open, and it was right
to: this is the same wrong-owner shape as the three defects fixed in the previous
commit, except this one is introduced BY this PR rather than merely missed by it.

THE DEFECT. Typing an unannotated field from a constructor assignment
(`var conn; Host() { conn = Alpha(); }` binds `conn` on the CLASS scope) is this
PR's whole point. `emitDartFieldAssignmentBindings` correctly declines to WRITE
that binding when a member body rebinds the name — but the shadow set gated
writes ONLY. `collectDartBodyShadows` had exactly one call site, inside the
bare-name write branch. Nothing consulted it on the read side, so a bare-name
READ of a shadowing binder the resolver cannot type walked straight past the
local and hit the field binding this feature mints:

    class Host {
      var conn;
      Host() { conn = Alpha(); }
      void probe(List<Beta> xs) {
        for (final conn in xs) { conn.inner(); }   // conn is a Beta element
      }
    }
    // resolved Alpha.inner, not Beta.inner

Reproduced in SEVEN binder shapes, not the one the review reported: for-in
(`final` and `var`), untyped formal parameter, plain local `var`, catch binding,
closure parameter, and record pattern. Delete the constructor and the same read
emits NOTHING — which is what proves this PR introduced it. "No edge" became
"wrong edge", the one failure mode compound-receiver.ts:519-537 exists to prevent.

THE FIX uses `Scope.ownsReceivers` (#2701), the primitive that already exists for
exactly this, rather than inventing a mechanism. `scope/walkers.ts` consults
`typeBindings` FIRST at every scope and only then honours the mask, so a shadow
the resolver CAN type still wins — an annotated `void probe(Beta conn)` keeps
`Beta`, because `synthesizeDartSignatureBindings` anchors parameter bindings on
the same body node and they land on the same Function scope. The mask fires only
where the alternative was a fabricated type.

Plumbing follows TypeScript's `@receiver-owner.this` precedent: the marker rides
the same synthesized match as `@scope.function` and sits outside the `@scope.`
namespace so `anchorCaptureFor` cannot mistake it for the anchor. Dart differs
only in that its function scopes are synthesized in captures.ts rather than
declared in the .scm, so the names travel as capture TEXT — a `CaptureMatch`
carries no AST node, so the reader cannot re-derive them.

SCOPE, and the costs taken knowingly rather than hidden. The mask is
`shadows ∩ fields` and nothing wider. Masking every locally bound name would
also fix a library-level `var logger = Logger();` shadowed by a loop variable,
but it changes resolution for code this PR never touched. Three consequences are
documented on `dartShadowedFieldsCapture`, not buried: the wider case is left
open; an ANNOTATED field shadowed by a binder is masked too (correct Dart, but it
touches resolution predating #2807); and `mixin` bodies are reached, since the
grammar gives them a `class_body`.

PERFORMANCE, measured rather than asserted. The mask is emitted eagerly in Pass A,
where `collectDartBodyShadows` used to be lazy — the replaced comment recorded
87-100% of eagerly built sets being discarded, ~15% of Dart emission. Actual cost
on the scope-capture large corpus, median of 3: 405.6ms with the mask vs 390.0ms
without, ≈ +4%. Fingerprint and capture_groups are byte-identical across both
arms, so no corpus fixture emits a mask at all — that 4% is the cost of the CHECK
alone. Not visible to `bench/scope-capture`, which gates the scaling RATIO and is
blind to a linear constant factor; stated here because the gate cannot state it.
(3 samples per arm, blocked not interleaved — an estimate, not a rigorous number.)
A per-file memo keyed by node span makes both passes share one walk per body, so
the write side no longer pays a second one.

SCHEMA_BUMP 40 -> 41 with its exact-value pin, since capture emission changed.
Re-check against origin/main immediately before merge — main was 39 at commit time.

Mutation-verified both directions, which is the part that matters:
  - unwire `scopeOwnsReceivers`, rebuild -> exactly 2 rows red
    (`loop-var-read-does-not-see-the-field`, `pattern-read-does-not-see-the-field`),
    83/85 green.
  - over-widen the mask (drop the `shadows.has` test) -> 28 Dart rows red,
    including `unshadowed-read-in-a-shadowing-class-still-resolves`.
The three control rows stay green under the first mutation BY DESIGN — they guard
overreach, not the defect; the second mutation is what proves they are live. Pre/post
on the trigger row: `{Class:Alien, Alien.inner#0, Outer.inner#0}` -> `{Class:Alien,
Alien.inner#0}`, so no row can pass vacuously.

Matrix 80 -> 85 tests. Sweep 3220 passed (was 3215; exactly +5). tsc clean. All four
capture gates green: receiver-resolution OK, scope-capture PASS (15 languages, no
fingerprint moved, nothing rebaselined), callable-value-flow PASS, swift golden 9.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(ts,js): let each language name its own class-field node type

CI caught a defect the whole review round missed. `grammar-literal-validation`:

    1 dead grammar literal(s) found:
      - node-type "field_definition" — languages/typescript/captures.ts:0
        — not valid in [typescript]

`isStaticClassFieldBinding` held BOTH spellings in one set —
`public_field_definition` (TypeScript) and `field_definition` (JavaScript) — so
that one predicate could serve both languages. But the predicate lives in
`typescript/captures.ts`, and the gate checks every literal against the grammar
of the FILE it appears in. `field_definition` is not a TypeScript node type.

The literal was NOT dead code: `javascript/captures.ts:42` imports the predicate
and calls it against real JS nodes, so the guard worked. The gate is still right
to fail it, and for exactly the reason this predicate's own docblock gives for
preferring `hasKeyword` over a node-type test — "a node-type test silently stops
firing on a grammar bump and every static field starts retyping its instance
twin again". A literal already dead in its own file is that failure shipped
pre-broken: nothing in the TypeScript file would ever have told us.

Each language now names its own node type and passes it in
(`TS_CLASS_FIELD_DEFINITION_TYPES` / `JS_CLASS_FIELD_DEFINITION_TYPES`), so every
literal is checked against the grammar it belongs to. The `hasKeyword` logic and
the static/instance reasoning stay shared and unchanged — only the node-type set
moves to the caller.

WHY THE LOCAL SWEEP DID NOT CATCH IT: I ran `test/integration/resolvers` and
`test/integration/cfg`. The gate is `test/integration/grammar-literal-validation.
test.ts`, in the parent directory. Scoping a sweep to the subdirectories a change
touches is precisely how a cross-cutting gate gets skipped.

grammar-literal-validation 4 passed. tsc clean. Full `test/integration` +
`test/unit/scope-resolution`: 6305 passed, 14 failed — all 14 in e2e/environment
suites (fts-extension-e2e 9, analyze-heap-oom-e2e, cli-e2e,
analyze-wal-checkpoint-failure, plus interproc-taint and parse-impl-env-reads,
which BOTH pass in isolation and fail only under 28-worker load). CI runs the
same files green.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(dart,ts): pin all seven read-side binder shapes; correct a wrong accepted-cost claim

Two review findings, one of which turned out to be a documentation defect rather
than the design defect it was filed as.

S8 — THE READ-SIDE FIX PINNED 2 OF THE 7 SHAPES IT REPORTED REPRODUCING.
`ab2f48c17` reported the wrong-edge defect reproducing in seven binder shapes and
landed rows for two. The stated mitigation was that all seven route through one
`collectDartBodyShadows` enumeration whose completeness the grammar-derived
coverage guard protects. That mitigation is NARROWER THAN CLAIMED: the guard
filters `nodeTypeInfo` on `type.includes('pattern')`, so it covers the pattern
family and NOT catch bindings, closure parameters, plain locals, or formal
parameters. Narrowing `addDartBinderName`'s catch arm would have turned no row red.

All seven were re-measured by unwiring `dartScopeOwnsReceivers` and rebuilding.
Every one gained the wrong edge `Outer.inner#0` — none had to be dropped as
non-reproducing. Five new rows: formal parameter, plain local `var`, catch
binding, closure parameter, for-in `var`.

Non-vacuity established structurally, not by assertion: the Dart AST was dumped
first to confirm each fixture produces the node `addDartBinderName` actually
inspects (`formal_parameter`, `initialized_variable_definition`,
`catch_parameters`, `for_loop_parts`). The catch row uses a bare `catch (zf)`
rather than `on Err catch` deliberately — an `on` clause names a type, which
would make the row measure type resolution instead of the mask.

S7 — THE ACCEPTED-COST COMMENT WAS WRONG, AND THAT IS THE FINDING.
It claimed dropping a static field's binding trades a wrong edge for a missed one.
Measured on a same-name twin, that is false:

    read                     with the drop      without it
    this.p  (instance twin)  Outer  correct     Alien  wrong
    Host.p  (static twin)    Outer  WRONG       Alien  correct
    Host.q  (static, no twin) none — missed     Alien  correct

The wrong edge did not disappear. It MOVED to the static read, which now picks up
the instance twin's type. Only the no-twin case is a genuine missed edge. The
trade is still right — `this.p` is far more common than `Host.p` — but it was
documented as safer than it is, and a reader deciding whether to revisit it was
being given the wrong picture.

NAMESPACING WAS EVALUATED AND DELIBERATELY NOT DONE. `Host.p.hit()` resolves
through `foldReceiverChain` in shared `compound-receiver.ts`, which explicitly
discards whether a chain's base was a class reference or a value (:519-527). The
class-constant bit exists only on the text-cascade path (`currentIsClassConstant`)
and is consumed solely by `isConstructionSelectorHop`; TS/JS take the fold, not
the cascade. `Scope.typeBindings` is `ReadonlyMap<string, TypeRef>` with no static
field. `ownsReceivers` cannot help — it is a suppressor that can only REMOVE a
binding, never route to a second one. A real fix needs `FoldState` to carry the
bit plus a key convention in shared code (an AGENTS.md:42 hook if not
language-neutral), it crosses the worker boundary so it needs a SCHEMA_BUMP, and
`compound-receiver.ts:826` iterates every binding for `fieldFallback` so a
namespaced key would leak straight back in as an ordinary field. Not a cheap or
safe change — and it would have been made with ZERO existing tests pinning
static-read behaviour.

So: smallest safe step instead. Two rows pin the measured behaviour
(`static-read-of-a-same-name-twin-picks-up-the-instance-type` asserts the positive
wrong target, not an empty set; `static-read-without-a-twin-loses-its-type` is a
known-gap), and the comment now says what actually happens. Anyone who revisits
this starts from measurements rather than from a claim.

No SCHEMA_BUMP: the `captures.ts` change is comment-only — verified, the diff has
no non-comment added lines.

Mutation red-rows 2/85 -> 7/90; each new row fails with a strictly larger set
(`+Outer.inner#0`), so none can pass vacuously. Overreach control still live:
dropping `shadows.has` turns 28 rows red including
`unshadowed-read-in-a-shadowing-class-still-resolves`.

Matrix 85 -> 92 tests. Sweep 3231 passed, 0 failed. tsc clean. All four gates
green, no fingerprint moved, nothing rebaselined.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(python): stop a dotted callee from fabricating a constructor type

S4 and S5 from the review round. They are ONE defect, not two, and the real one
is wider than the review described. Both live in a 32-line block THIS PR adds
(`@@ -116,0 +117,32 @@` — a pure addition), so neither is pre-existing.

THE DEFECT. `constructorCallTypeName` rejected only a callee rooted at the
receiver and returned every other dotted callee whole to `resolveTypeRef`, which
resolves dotted names through `QualifiedNameIndex` — and that index matches the
TRAILING SEGMENT against a class of that name even when the callee is a method on
an unrelated object:

    class Alpha:
        def ping(self): return 1
    class Factory:
        def Alpha(self): return "not an Alpha"    # a METHOD
    class Host:
        def __init__(self, f): self.svc = f.Alpha()   # svc is a str
        def run(self): return self.svc.ping()
    # measured: Host.run -> Alpha.ping, fabricated

WIDER THAN FILED: the review framed the trigger as a callee rooted at an
`__init__` PARAMETER. Measured, the root's binding form is irrelevant — a
module-level variable (`shared_factory.Alpha()`) fabricates identically. Any rule
written against what the root binds to would have fixed half the defect and left
the other half looking fixed. Both fabrications now have rows.

S5 IS A SYMPTOM, NOT A SECOND DEFECT. `self.conn = Outer()` then
`self.conn = Registry.get()` typed the field as `"Registry.get"` (resolving to
nothing, so the edge vanished) only because the dotted arm accepted
`Registry.get` as a constructor in the first place. Once dotted callees yield no
candidate, there is nothing weak left to displace with and `Outer` survives. So
`>=` is untouched and NO second mechanism was added: between two REAL
constructions last-write-wins is correct, and the existing `ReassignedField`
matrix row depends on it. Tightening the tie-break would have been the wrong fix
to a symptom.

THE FIX: accept a bare `identifier` callee only. Refusing ambiguous evidence at
CAPTURE time rather than resolving-then-rejecting is deliberate — the target-kind
route is not reachable from this file (`resolveTypeRef` already filters
`TYPE_KINDS`; the fabrication comes from a trailing-segment match in
`scope/walkers.ts`), and the root-alias route would collide with PR #2828, which
is rewriting exactly how an unaliased dotted namespace import resolves. This
change is orthogonal to #2828 by construction: it changes what is CAPTURED, never
how a name is looked up, and touches none of its files.

WHAT THE DOTTED ARM WAS ACTUALLY BUYING: nothing. The review (and this PR's own
docblock) justified it with `self.u = models.User()`. Measured, that shape emits
NO edge before or after this change — an instance field's binding lands in CLASS
scope, which never reaches the namespace split. The shape that really resolves is
the module-level local `u = models.User()`, which comes from `query.ts` and is
untouched here. The arm's entire measured contribution was fabrications, which is
what made the fix cheap.

#2828 COMPATIBILITY, checked not assumed: `import pkg.user` -> `self.u =
pkg.user.User()` resolves to nothing both before and after, so this cannot stop it
resolving. No test row pins that shape ON PURPOSE — asserting its current empty
state would plant a tripwire that goes red the moment #2828 lands. If #2828 also
teaches the FIELD path the namespace split, re-enabling dotted field callees
becomes a live option; the docblock says so, and says why redoing it capture-side
would re-open the fabrication.

SCHEMA_BUMP 41 -> 42 with its pin. This is parse-time capture emission: after the
fix `self.svc = f.Alpha()` emits no `@type-binding.constructor` capture at all, so
a v41 warm cache replays the pre-fix capture set for byte-unchanged files and
keeps serving the fabricated edge (GUARDRAILS.md:34). A within-PR re-bump, not a
collision fix — 40/41/42 are all this unmerged branch's, and `origin/main` is at
39. Re-check against origin/main immediately before merging.

Mutation-verified in BOTH directions, which is what shows the fix is placed at the
right width rather than merely working:
  - revert the fix     -> exactly 3 red: both S4 fabrication rows + the S5
                          displacement row (8 green)
  - reject EVERY callee -> exactly 3 red: the three positive-typing rows (8 green);
                          the S4 rows correctly stay green
The two mutations hit DISJOINT row sets — too loose and too tight each break a
different half.

No row asserts an empty set: the three "must not type" rows call `Alien.ping()` as
a witness so a regression SWAPS a target in rather than emptying. Non-vacuity is
asserted in the test itself — one guard checks every caller node is live, another
asserts the `Alpha` class / `Factory.Alpha` method name collision the fabrication
NEEDS is actually present, so the rows cannot rot into passing for the wrong reason.

Sweep 3268 passed, 0 failed. Python unit + python.test.ts 342 passed. tsc clean.
All four gates green — no bench cell moved, nothing rebaselined.

Refs #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 19:31:25 +01:00
Gergő Magyar
9eaf2e6c4e
perf(mcp): cut the analyze-only language-provider closure out of MCP server startup (#2802) (#2806)
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* fix(mcp): key the empty-ascent note on CALL_SUMMARY data, not language (#2802)

`pdg-impact.ts` decided whether to append a "return-value ascent is
TypeScript/JavaScript-only" caveat to the `impact(mode:'pdg')` note by
looking up the criterion file's language. That put language-specific
logic in a layer that must be language-agnostic, and it was a lossy proxy
for a fact the graph already holds.

Whether the ascent can fire is a property of the persisted CALL_SUMMARY
edges. The descent already computes it, so thread the resolved-callee and
return-flowing counts out of `interproceduralDescent` and key the note on
those instead.

Three defects the language proxy carried, all gone:

  - Wrong for `.mjs`/`.cjs`/`.mts`/`.cts`: the provider registry's
    extension arrays omit them while the ingestion pipeline parses them
    as TS/JS, so those files were harvested but the note claimed their
    ascent was empty.
  - Silently stale: any language whose harvester started recording formal
    indices would keep getting the caveat until someone edited the list.
  - Wrong in reverse: a TS/JS callee with no return-flow got no caveat, so
    an ascent that found nothing read like one that covered the slice.

`pdg-impact.ts` now names no language and imports nothing from the
language layer, which also drops the analyze-only provider closure from
MCP server startup. Measured on overlayfs against a full build:

  import mcp/local/local-backend.js  before  565-648 ms / 548 modules
  import mcp/local/local-backend.js  after   458-463 ms / 170 modules

Tests hold CALL_SUMMARY content fixed while varying the file extension
across nine languages and assert the note text is identical, then hold the
extension fixed and vary the summary to show the note tracks the data.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): guard MCP startup against the language-provider closure returning

The eager `pdg-impact.ts -> core/ingestion/languages` edge was found and
lost once already during #2793 before #2802 re-derived it, so it gets a
test rather than a comment.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(lbug): record why csv-generator is not lazy-imported

#2802 proposed cutting `csv-generator.js` out of the adapter chain to
shorten MCP server startup. Measured on a native filesystem, the marginal
cost is small relative to the siblings this module already imports, and
`core/search/bm25-index.ts` statically imports `normalizeFtsText` from the
same module on a path `local-backend.ts` reaches dynamically for FTS — so
deferring would relocate the cost to first query, not remove it.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(pdg): pin chained receiver calls reaching BasicBlock.calleeIds

The PDG inter-procedural descent hops through `BasicBlock.calleeIds`, so
it can only cross a call boundary the resolver resolved. Chained receiver
calls reach `calleeIds` through the receiver-typing pass's own
`calleeIdSink` — a separate path from plain calls.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(analyze): drop the stale per-language cross-reference (#2802 review P3-4)

`pdgModeMismatch`'s comment told readers to keep "the diagnostic
per-language refinement in the impact CONSUMER (see pdg-impact.ts
assemblePdgImpactResult)". That refinement is no longer per-language —
removing it is the point of #2802, which now keys the empty-ascent note on
the persisted CALL_SUMMARY data instead.

The comment's real invariant is untouched and still correct: the values in
`resolvePdgConfig` must stay scalar, because the comparison below is a
shallow `!==` and an object would compare by reference. Only the
cross-reference was stale.

Comment-only; no executable line changes.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): probe the real module loader for the startup language closure (#2802 review P1-2)

The previous guard hand-rolled a regex walk over TypeScript source to
assert `core/ingestion/languages` was not statically reachable from MCP
startup. Four bypasses were reproduced against it, any one of which let
the exact 226-module regression return while the test stayed green:

  a. Wrong entry root. It walked from `mcp/local/local-backend.ts`, but the
     server module is `mcp/server.ts` — which imports LocalBackend as
     `import type`, so the guard's anchor was not even on server.ts's
     runtime closure. Ten real startup modules sat outside it.
  b. A top-level `await import(...)` executes during module evaluation, so
     it is eager at startup — but the walker skipped every `import(...)`
     by construction.
  c. The `import type` strip deleted a 16,445-character window of
     `pdg-impact.ts`: an `export type X =` matched lazily to the next
     `from "…"`, which lives inside a string literal. Any import in that
     window was invisible.
  d. The comment strip treated a `/*` inside a string literal as a comment
     opener.

Replace the approximation with a real module-load probe: spawn a child
node process per entry, import the built `dist/` entry, and report what
the loader actually pulled in. Rooted at `dist/mcp/server.js` and
`dist/cli/mcp.js` (the real startup entries) plus
`dist/mcp/local/local-backend.js`. Syntax cannot fool it.

One deviation from the two existing sibling probes is load-bearing:
`dist/` is ESM, so a `require.cache` diff alone cannot see the first-party
`dist/**` graph — it only catches CJS and native modules, which is why
`import-closure.test.ts` gets away with it (it asserts on
`@ladybugdb/core`). A pure cache diff here would have reported zero
language modules unconditionally, i.e. a new vacuous guard. This probe
unions `module.registerHooks({ load })` with the cache diff, and each
entry carries a non-vacuity anchor and a module floor so an empty result
fails loudly.

Verified load-bearing: adding a top-level
`await import('../core/ingestion/languages/index.js')` to
`src/mcp/resources.ts` and rebuilding turns `dist/mcp/server.js` red with
70+ named offenders, while the `local-backend` and `cli/mcp` cases stay
green — which is bypass (a) demonstrated directly. The old guard passed
that poisoned tree entirely.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(lbug): drop the unreproducible 9p multiplier from the csv-generator note (#2802 review P3-2)

The comment justifying why `csv-generator.js` is NOT lazy-imported carried
a hard "~40x" figure for how much a 9p mount inflates per-file ESM
resolve. Three independent measurements during review produced ~40x, ~7.3x
and ~30x, so the multiplier is not a reproducible quantity and had no
business being stated as one in a durable comment.

Reworked so the STRUCTURAL argument leads and the numbers only support it.
That argument is what actually settles the question and it does not rot:
`core/search/bm25-index.ts` statically imports `normalizeFtsText` from
`csv-generator.js`, and `local-backend.ts` reaches bm25-index through a
dynamic import on the FTS query path — so deferring here relocates the
cost to first query rather than removing it. Both verified again at
`bm25-index.ts:15` and `local-backend.ts:2756`.

Remaining figures are re-measured, attributed to a date and issue, and
labelled by filesystem: ~1.6 ms marginal (median of 45 cold imports on
local disk) versus ~50 ms for the same import on a network mount, stated
as environment-bound rather than as a property of the module. The
provider-registry cost is given as "several hundred modules" — the static
walk, the runtime hook, and the reviewer's probe each counted it
differently (375 / 439 / 407), so no single number was picked to go stale.
The old "226 modules" was real but counted only the `languages/` subtree
and undercounted the win.

Also repoints the trailing reference to the guard's new home at
`test/integration/mcp/startup-language-closure.test.ts` (same comment
block, inseparable from this rewrite).

Comment-only; no executable line changes.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(mcp): stop the empty-ascent note asserting a fact an undecodable summary contradicts (#2802 review P2-2)

The note claimed "this is a property of the persisted summaries" whenever
the descent resolved callees and none carried a return-flow. But
`decodeCallSummary` never throws by design: a version-skewed (`2|r:1`),
corrupt (`1|r:zz`), or NULL `reason` yields no entry, which was
indistinguishable from a cleanly-decoded empty summary. So the note could
assert "no formal parameter is recorded as flowing to its return value"
about a callee whose CALL_SUMMARY actually records `p0 -> return`.
`meta.pdg.hasCallSummary` is a plain boolean and stores no codec version,
so nothing else caught it.

`calleesWithReturnFlow` now reports three outcomes instead of two —
flowing, decoded-empty, and undecodable — and the undecodable count is
threaded through the descent to the note. When it is non-zero the note
says so and points at a re-index; when every summary decoded, the
persisted-summaries claim is kept and now explicitly conditioned on that.

Soundness is unchanged: an undecodable summary still licenses no ascent
and never enters the return-flowing set, so the ascent path is
byte-identical. Only the note's wording moves.

Tests drive all three undecodable forms through the mock and assert the
false claim is gone, the remedy is reported, and the ascent is still
withheld. A companion assertion pins that the all-decoded case KEEPS the
persisted-summaries claim, so the fix cannot degenerate into deleting the
sentence. Verified load-bearing: reverting the source alone fails 6 of 34.

Impact analysis: `calleesWithReturnFlow` upstream LOW (2 callers, both in
this file); `assemblePdgImpactResult` upstream LOW (1 caller).

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(pdg): cover every chained-receiver shape and pin the inference gap (#2802 review P2-1, P3-1)

The fixture proved chained receiver calls reach `BasicBlock.calleeIds`
using exactly one receiver form — a local `const`. That is the shape that
works, so a single-shape fixture implied general support the resolver does
not have. This repo has been burned by that before: a drop-count gate
blind to fixed shapes.

Measuring nine forms against the real pipeline also corrects how the gap
was originally characterised. It is NOT local-versus-field. An annotated
field resolves fine, including the constructor-assigned variant:

  private p: Outer = new Outer();          -> both links
  private p: Outer; this.p = new Outer();  -> both links
  private p = new Outer();                 -> EMPTY CELL
  private p; this.p = new Outer();         -> EMPTY CELL

The discriminator is the type ANNOTATION. When a field's type must be
inferred from its initializer the whole `calleeIds` cell empties — so even
`Outer.inner`, an ordinary named-receiver call, is lost, and the
inter-procedural descent cannot cross the boundary at all. Pre-existing;
independent of #2802, which does not touch receiver resolution.

The fixture is now table-driven over seven working forms (local const,
local in a method, annotated field, ctor-assigned annotated, ctor-param
assigned, call-result receiver, three-link chain) plus the two
inference-typed forms, each row carrying its expected chain-link ids.

Assertions moved from substring to exact id membership, split with the
production `splitCalleeIds` reader — so `Inner.compute` can no longer be
satisfied by `Inner.computeExtra` or `OtherInner.compute`, which matters
because the descent keys on exact ids for span and CALL_SUMMARY lookup.

The two known-gap rows are pinned with `it.fails` plus a hard assertion on
the exact gap-row set, so a resolver fix turns them red instead of passing
silently, and an anti-vacuity guard requires every shape to match exactly
one block — without it a drifted fixture matching zero blocks would let
`it.fails` pass for the wrong reason. Proven by mutation: relabelling a
working row as a known gap fails both pins.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(mcp): qualify the empty-ascent note when the examined callee set is incomplete (#2802 review P2-4)

The note asserted "none of the N resolved callees carry a CALL_SUMMARY
return-flow", and on the all-decoded path that this is "a property of the
persisted summaries". Both are universal claims over the callees the
descent actually examined, and two mechanisms can leave that set
incomplete without the note saying so:

  1. Budget truncation. The descent stops on depth/limit/node-cap, so a
     callee that DOES carry a return-flow can sit in a hop never reached.
     A 4-deep chain reported "none of the 3 resolved callees" while link 4
     held the only summary.
  2. Emit-time capping. When a block's `calleeIds` cell was capped,
     `splitCalleeIds` strips CALLEES_TRUNCATED_SENTINEL, so the dropped
     callees are invisible to both the scan and the counters — even though
     the callgraph bridge in this same file already treats such a block as
     callee-incomplete.

Add `calleeIdsWereTruncated`, the counterpart to the sentinel strip, read
from the raw cell before splitting so a block whose entire list was capped
away still raises the flag. Thread it through the descent to the note.
Case 1 needs no new plumbing — the aggregate `truncated` is already on the
input object.

Using the aggregate rather than a descent-only flag is deliberate: seed
truncation and intra-BFS depth truncation also shrink the initial slice, so
their callees are never gathered either. It is a sound superset that never
under-hedges.

When either mechanism fired, one clause naming the reasons is appended and
the whole-slice assertion softens to "every summary examined decoded … a
property of those summaries". When the set is complete both branches stay
byte-identical to before, so this does not become a blanket hedge.

Tests pin truncated, untruncated, emit-capped-alone, both-mechanisms, and
undecodable+truncated, asserting the truncation premise rather than
assuming it. Verified load-bearing: reverting the source alone fails 6 of
42, and the HEAD note printed in those failures is the bug verbatim.

Impact analysis: `assemblePdgImpactResult`, `calleeIdsByBlock`,
`interproceduralDescent` all upstream LOW; every caller is in this file and
`runImpactPDG`'s exported signature is unchanged.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(mcp): stop the empty-ascent note calling call-site references "resolved callees" (#2802 review P3-7)

The note printed "none of the N resolved callees carry a CALL_SUMMARY
return-flow (no formal parameter is recorded as flowing to its return
value)". N counted the raw `BasicBlock.calleeIds` cell, which carries ids
`resolveCalleeSpans` never enters — out-of-repo targets, interface
methods, and the `Class:` id a `new X()` emits. On the chained-receiver
fixture that inflated N from 1 to 3.

Two defects, both in the wording rather than the arithmetic: "resolved"
implies a symbol-table lookup that did not happen for those ids, and the
parenthetical asserted a FORMALS-level property about symbols never
resolved to a body.

Reworded rather than re-seeded, deliberately. `calleesWithReturnFlow`
scans the RAW id set, so the claim "none of these carries a return-flow"
is exactly established for all N — the scan really did check the `Class:`
id. Re-seeding N from the resolved spans would make the sentence quantify
over a strict SUBSET of what was checked, silently dropping the
un-enterable references from a claim that genuinely covers them, and would
desync N from `calleesUndecodable`, which is derived from the same scan
population.

  none of the N resolved callees carry ...
  none of the N call-site callee references carry ...

and the formals parenthetical is dropped. The note gets shorter, not
longer. `calleesResolved` is renamed `calleeReferences` end-to-end
(file-local; nothing outside referenced it), and the descent's return-type
doc — which called them "callee symbols the descent resolved" and
reinforced the wrong reading — now states that un-enterable ids ride the
same cell, are scanned, and are never entered.

The `> 0` gate is unchanged, so no slice that previously produced the note
stops producing one. A test pins that explicitly: an all-un-enterable cell
resolves no span, takes no hop, and emits no ascent sentence despite a
non-zero count — so a future re-seeding cannot silently move when the note
fires.

Tests also pin the quoted number and singular/plural against a mixed cell,
with a discriminator asserting `reachableBlocks` is byte-identical while
the count moves 1 -> 3. Verified load-bearing: reverting the source alone
fails 6 of 7 new tests, printing the finding verbatim.

Impact analysis: `assemblePdgImpactResult` and `interproceduralDescent`
upstream LOW, sole caller `runImpactPDG` in the same file; exported
signature unchanged.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): pin cross-hop callee accumulation and the mixed return-flow contract (#2802 review P2-5)

Every case in this file drove a single hop, so the Set union the descent
performs across hops (`calleeReferencesSeen` / `calleesReturnFlowingSeen`)
was never proven to accumulate rather than overwrite — a one-hop descent
cannot tell the two apart. And although a sibling commit added a
three-id cell, none of those ids return-flowed, so the
"some callees flow, some do not" boundary was entirely unpinned.

Extends the mock with a `secondSummary` knob that drives a genuine second
hop: `helper2` is named only in `helper`'s own body block, so the descent
must cross a second boundary to reach it. Three mock handlers are made
faithful to the parameters they already bind — `calleeIdsByBlock` now
routes on the asked `$ids`, and the CALL_SUMMARY scan and span resolve
answer per asked id — which is what makes a second callee answerable at
all. Existing cases are behavior-identical.

Five tests: the union count across two hops; a return-flow on hop 0
surviving a later empty hop; a return-flow found only on hop 1; mixed
callees in one examined set going silent rather than partial; and a
flowing callee alongside an undecodable sibling staying silent including
the decode remedy.

The mixed case pins a deliberate contract rather than proposing one. The
production condition is `calleesReturnFlowing === 0`, so partial coverage
is reported as silence. A reviewer considered and dropped "report partial
coverage" as a product change; this makes flipping it a conscious edit
instead of an accident.

Verified load-bearing against three separate source mutations: accumulating
only on hop 0 (2 fail), each hop overwriting instead of unioning (3 fail),
and flipping the gate to partial-coverage reporting (4 fail). In all three
every PRE-EXISTING test still passed — which is the finding restated as
evidence.

Test-only; `pdg-impact.ts` is byte-identical to HEAD.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(mcp): consolidate the empty-ascent rationale to one canonical site (#2802 review P3-6)

The "keyed on observed CALL_SUMMARY data, never on the criterion's
language" rationale was restated in full at four comment sites. It exists
because a reviewer asked "why not just look up the language?", so it has to
stay findable — but not four times.

The canonical explanation now lives in `interproceduralDescent`'s
return-type doc, where the counters are actually computed, organised as
POPULATION (why the raw `calleeIds` tally is the right set to quantify
over) and OBSERVED DATA, NEVER THE CRITERION'S LANGUAGE (the full
answer, including the producer-change argument and the no-language-naming
rule). The other three sites keep only what is locally load-bearing and
point here.

Deliberately preserved, because each carries a non-obvious fact: why an
undecodable summary licenses no ascent, why the aggregate `truncated` is
used rather than a descent-only flag, and the raw-id-tally population
argument. Net comment delta -11 lines.

The reviewer also flagged the local/field naming asymmetry
(`calleeReferencesSeen` vs `calleeReferences`). Keeping the suffix, with a
comment recording why so it is not re-raised: the premise that every other
local matches its field is true, but those locals are identity-returned,
whereas these are `Set<string>` accumulators returned as `.size`. Dropping
the suffix would give one identifier two types in one file — a `Set` at the
accumulation site and a `number` where the note does arithmetic and
pluralisation on it ~900 lines away. The Set-ness is also load-bearing: the
dedup is why a callee invoked from two hops is not double-counted, which
is what makes the note's count correct.

Comment-only. Verified mechanically: every added and removed line in
`git diff -U0` matches a comment pattern, so the note's template literals
are untouched and its rendered text is byte-identical. 89 tests unchanged.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(mcp): collapse the ascent plumbing accreted across 13 fix commits

Quality cleanup, no behavior change. Four independent review passes
converged on the same root cause: thirteen commits each fixed one review
finding in isolation, and the ascent facts grew one loose field at a time
until 62% of the changed region was comments explaining plumbing.

Five changes:

  - `calleeIdsFromBlocks` deleted. Zero call sites anywhere in src/ or
    test/ — already dead on main, and this branch had edited it to keep it
    compiling. Its only reference was a stale `{@link}` in a neighbour's
    doc, now rewritten to stand alone.

  - `parseCalleeIdsCell` replaces the two-pass read. `calleeIdsWereTruncated`
    and `splitCalleeIds` were splitting the same cell on adjacent lines,
    which measured ~2x the parse cost (0.82 -> 1.59 ms at a realistic hop,
    57.7 -> 92.7 ms at the per-statement site cap) and was a second
    independent encoding of the sentinel format — exactly what
    `splitCalleeIds` was extracted to prevent. One pass classifies as it
    walks; `splitCalleeIds` stays as a wrapper so its two external callers
    are untouched. The single-use `export` is gone.

  - `AscentCoverage` replaces four fields threaded through three
    signatures. ~12 declaration sites become 3, and the canonical rationale
    now lives on the type by construction — which is why the earlier
    doc-consolidation commit was needed at all.

  - `calleesReturnFlowing` becomes a boolean. Its only reads were
    `=== 0`, twice; it cost a Set sized to every callee in the slice plus a
    per-hop union loop. The flag is set inside the existing
    `returnFlowing.size > 0` branch — equivalent, since the cross-hop union
    is non-empty iff some hop's was.

  - The duplicated empty-ascent note head is collapsed to one gate and one
    head with per-arm tails. Both arms had been edited in lockstep twice in
    this branch's own history.

The rendered note text is byte-identical. Verified structurally and then
empirically: both expressions reconstructed standalone and diffed across
the full cross product of references x returnFlowing x undecodable x
truncated x listTruncated — 288 combinations, 0 mismatches.

Net -53 lines. 102 tests pass unedited; the unused-symbol lint warning is
gone.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): parallelise the startup probes, drop a redundant pin, name the mock knobs

Quality cleanup from the same review passes. The set of verified behaviors
is unchanged except where noted.

**Startup probes run concurrently.** `spawnSync` blocks the event loop and
vitest runs a file's tests in order, so the three probes strictly
serialised. Launching all three with async `spawn` in `beforeAll` and
asserting over the collected outcomes cuts the file from ~12.7 s to ~3.9 s
wall (-69%). Every promise is caught before `Promise.all`, so all three
children are reaped and failures report per entry rather than surfacing
only the first rejection. Preserved and each proven by mutation: the
missing-dist error names its entry, a raised module floor fails only its
own row, and a bogus anchor still reports the loaded-module count.

**The two `it.fails` rows are removed.** They pinned the inference-typed
receiver gap that the strict `toEqual` pin beside them already covers —
and they were the weaker of the two, because `it.fails` passes when the
body throws for ANY reason, including `idsFor`'s own non-vacuity guard. A
renamed fixture marker would have kept them green on a rotted premise. The
strict pin is self-diffing and was verified load-bearing on its own:
pointing a known-gap marker at a resolving shape fails it with the two
newly-present ids listed. The file header now carries the gap's durable
description.

**The ascent-note mock takes options objects.** `descentExec` and `run`
had grown to five and seven positional parameters in the order five agents
added them, so call sites read `run(FILE, true, null, 3, false, undefined,
null)` — several carrying `undefined` purely to reach a later argument. All
34 call sites are converted; nine that used only defaults are now bare
`run(file)`. No knob renamed — they are orthogonal and correctly named.
Code lines are exactly neutral (353 -> 353); the win is at the call sites.

Also refreshes five comments that still described `calleesReturnFlowingSeen`
and the two-branch note, both of which the preceding commit replaced.

102 unit and 10 integration tests pass; test count moves 9 -> 7 in the
chained-receiver file, exactly the two redundant rows.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat(mcp): publish return-value-ascent coverage on the PDG impact result

`impact(mode:'pdg')` computed four facts about ascent coverage and used
them exactly once — to interpolate an English sentence. They never reached
the result object, so an agent consuming this MCP output could only ask
"was the ascent complete, and if not why" by regexing prose. The cost was
already demonstrated: a pure rewording commit earlier in this branch broke
~30 assertions and would have silently broken any consumer keying on the
old phrase.

Adds `pdgEvidence.ascent`:

    referencesScanned        how many call-site callee references were scanned
    returnFlowFound          did the ascent fire anywhere in this slice
    undecodableSummaryCount  summaries the codec could not decode
    examinedComplete         was the examined set the whole callee list
    incompleteReasons        'traversal-truncated' | 'callee-list-capped'
    callSummaryLayerPresent  false => pre-FU-C (v3) index

Nested under `pdgEvidence` because that is the established counts-and-
classification namespace, and `composeUnifiedPdgImpactResult` already
spreads it, so the member survives the unified compose untouched.

`incompleteReasons` carries CODES, following the existing
`truncatedByReasons: ('depth'|'limit')[]` precedent. The prose clause and
the structured field now render from one array computed once, so an agent
branching on codes and a human reading the note cannot disagree, and a
third reason becomes a rendering decision rather than a contract change.

Two shape decisions worth recording. `callSummaryLayerPresent` exists
because without it a v3 index publishes `referencesScanned: N,
returnFlowFound: false`, which reads as "these callees record no
return-flow" when the truth is "the layer that records it is absent" — the
note already distinguishes those, and the structured surface must not be
less honest than the prose. And the field is ABSENT rather than zeroed when
the descent never ran (upstream slices): "nothing was scanned" is a
different fact from "we scanned and found nothing".

`pdgResultVersion` stays 2. The documented trigger is a BREAKING change to
the result shape; this removes nothing, renames nothing, and changes no
existing field's meaning. Confirmed mechanically: zero top-level key drift
across 2304 cases. The historical v2 bump was for changing an existing
field's semantics (startLine 0- to 1-based).

The note prose is byte-identical, proven across the same 2304 cases with a
negative control — perturbing one character of the phrase table produces 60
drifts, so the harness demonstrably detects what it asserts. 14 new tests
cover the structured surface and all 14 fail when the source is reverted,
while the 54 prose tests pass unchanged.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(helpers): share one module-load probe, and fix two guards that passed on broken builds

Three tests independently spawned a child node process to inspect what a
built `dist/` entry loads, duplicating the REPO_ROOT derivation, the probe
source, the missing-dist guard, the spawn with NODE_OPTIONS cleared, the
status-vs-signal rendering, and the payload parse. The newest copy was also
the only correct one, so the next author had 2-in-3 odds of copying a
weaker probe.

The two older probes diff `require.cache` only, which is structurally blind
to the first-party ESM `dist/**` graph. That is not theoretical — both were
demonstrated passing on genuinely broken builds:

  - Severing `dist/cli/mcp.js -> stdio-context.js` (a pure ESM change)
    leaves the require.cache diff EMPTY, so `import-closure.test.ts`'s two
    assertions reduce to `[].filter(...) === []`. It reported 2 passed on a
    severed graph.
  - Severing `registry -> swift/query.js` leaves 76 unrelated CJS entries,
    which satisfied `registry-import-closure.test.ts`'s indirect guard. The
    Swift half of its headline had gone vacuous and it reported 1 passed.

Both now fail on those same builds, naming the missing anchor.

`test/helpers/module-load-probe.ts` unions the ESM `registerHooks({ load })`
channel with the cache diff, probes entries concurrently, and makes
non-vacuity STRUCTURAL: `anchor` and `minModules` are required fields and
the helper throws when either fails. A vacuous probe is a harness failure,
not a silently green test, so it cannot be forgotten. Forbidden patterns
and remedy text stay per-test — the harness is the shared part, the policy
is not.

Also fixes `toRepoRelativePosix` resolving non-absolute specifiers against
`process.cwd()`, and dedupes modules a CJS-from-ESM import reported once
per channel.

Faster despite doing more: the registry file goes 12.4s -> 6.75s, because
`spawnSync` burned the parent thread polling while the child loaded native
grammars. `import-closure` drops to one spawn from two.

The `local-backend.js` entry is kept although its closure is currently a
strict subset of `server.js`'s: that is an observation, not an invariant.
If `server.js` ever stops eagerly reaching the local backend, the server
probe stays green while the module #2802 actually changed goes unobserved —
and now that anchors are mandatory, that entry is what pins `pdg-impact.js`.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* docs(lbug): trim the csv-generator note and fix the claim it got wrong

Two reviewers split on this comment: one wanted it cut to the structural
argument, the other said a comment is the right depth for documenting a
rejected change since there is no invariant to guard. Both are right, so
it stays a comment and gets shorter — 13 lines to 6.

Trimmed because it had already taken two corrections (an unreproducible
"~40x" figure, and a pointer to a test file that no longer exists), and its
tail had drifted from its own guard: the comment said "several hundred
modules, ~150 ms" where `startup-language-closure.test.ts` says "~226
extra modules and ~130 ms". Two numbers for one fact. That tail is
documented better in the guard's own header, so deleting it loses nothing.

It also stated the load-bearing claim inaccurately. The old text said
bm25-index imports `normalizeFtsText` "from here" — but `lbug-adapter.ts`
neither exports nor re-exports it; the only occurrence of the identifier in
this file WAS the comment. Anyone verifying would have grepped, found
nothing, and concluded the note was stale. Now names `csv-generator.js`
explicitly, re-verified at `bm25-index.ts:15` (static) and
`local-backend.ts:2756` (dynamic, on the FTS query path).

Comment-only, proven two ways: every changed line matches a comment
pattern, and stripping all `//` lines from HEAD and from the working tree
yields byte-identical text.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(helpers): extract the temp-repo lifecycle, collapsing five hand-rolled cleanups into one

Four cfg integration tests each hand-rolled a `tmpDirs` array, a
mkdtemp-and-register step, and an `afterAll` rmSync. It is actually five
registrations across six creation sites — `pipeline-pdg.test.ts` keeps a
second pool for its C-family fixtures.

Seeding genuinely varies four ways (recursive cpSync, single copyFileSync,
inline mkdir+writeFile, and nothing at all), so a fixture-copier helper
would have fitted about half the sites and made things worse. Extracted the
LIFECYCLE instead — mkdtemp, register, afterAll cleanup — which is
byte-identical at all five registrations and is the correctness-critical
part. `dir()` returns an empty registered directory for callers that seed
themselves; `fromFixture()` covers the common case. That fits 6/6.

The duplication had already produced a latent defect: `cFamilyTmpDirs` was
cleaned by TWO `afterAll` blocks, harmless only because `rmSync` was called
with `force: true`. Now one hook.

`createTempDirPool` is a function called from each test file's module scope
rather than a top-level hook in the helper, because under ESM caching a
module-level `afterAll` would register once, against whichever file
imported it first. That hazard is documented in the helper.

Raw line count is roughly neutral (-44 across the tests, +62 for the
helper, 29 of which are the rationale). The win is that a cleanup invariant
went from five copies to one.

Cleanup verified empirically, including the failure path: a throwaway suite
whose `beforeAll` throws still has its directory removed, and every
temp directory created by the four migrated files is gone after a run.
46 tests pass across the four files.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(resolvers): pin the inference-typed field receiver gap at the resolver level

The gap was pinned only in a PDG test, asserting on `BasicBlock.calleeIds`
behind the full `--pdg` pipeline. But it is a resolver fact: when a class
field's type must be inferred from its initializer, chained receiver calls
resolve to nothing. Whoever closes it will be working in the resolver
suite and would have got a red CFG/PDG test with no resolver-side signal.

Asserts CALLS edges directly, alongside `python-constructor-field-receiver.test.ts`.
Nine receiver shapes run the identical statement; seven resolve, two do not:

    const o = new Outer()                     resolves
    private p: Outer = new Outer()            resolves
    private p: Outer;  this.p = new Outer()   resolves
    private p: Outer;  this.p = p  (ctor arg) resolves
    constructor(private p: Outer) {}          resolves
    makeOuter().inner().compute()             resolves
    o.inner().mid().compute()  (three links)  resolves
    private p = new Outer()                   NO EDGES
    private p;  this.p = new Outer()          NO EDGES

Two things the fixture establishes that the PDG-side pin could not. The
discriminator is the type ANNOTATION, not local-versus-field — the
parameter-property form resolves fine. And the initializer is NOT invisible
to the resolver: `new Outer()` still emits its own constructor CALLS edge,
byte-identical to the annotated twin. Only the initializer-to-field-type
binding is missing, which narrows where a fix belongs.

Assertions key on exact node ids rather than names, because `compute` is
ambiguous across two classes and keying on the source name collides with
`Object.prototype.constructor`.

No `describe.skip` and no `it.fails` — the latter passes when the body
throws for ANY reason, so it can go green on a rotted premise. The gap is
pinned as its explicit current value, which self-diffs: simulating the fix
fails one test showing the two newly-resolved ids, and renaming a fixture
symbol fails the non-vacuity guard.

Runtime is comparable to the PDG-side pin (~9-11s, both dominated by
worker startup), so this is an altitude and scope win, not a speed one.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): replace the extension sweeps with a stronger language-agnosticism pin

Two `it.each` sweeps over nine file extensions asserted that the
empty-ascent caveat was present (or absent) for each. They looked like the
pin for the property the whole change exists for — `pdg-impact.ts` must
name no language and its output must not vary by extension — but they were
the weakest available form of it.

They asserted substring presence/absence, so a language dependence that
ADDS text while leaving the caveat intact passes them. Demonstrated, not
assumed: injecting a `.py`-only hedge inside the caveat sentence and
replaying the two sweeps verbatim against that source gives 18 passed. The
byte-identity test beside them caught it.

So the sweeps are deleted and the identity test carries the property alone,
hardened in two ways:

  - Two rows instead of one, covering BOTH sides of the caveat gate. The
    silent (return-flow present) branch previously had no identity
    counterpart at all — nine runs proving one fact, with nothing checking
    that its rendering was extension-invariant.
  - The fingerprint spans the note AND the reachable blocks, not just the
    note. Strictly more than the sweeps verified.

Entailment is exact: identity across the extension set, plus the two
existing single-extension content assertions, gives "every extension gets
the caveat" and "no extension gets it". Reducing a sweep to one extension
was rejected because it reproduces an assertion already present verbatim.

Also converts the incompleteness block from six near-identical bodies to a
3-row premise table crossed with two assertions. Each row now names the
exact phrase set its clause must contain, so presence and absence are
asserted together — which adds three checks the longhand version lacked
(the budget row now also proves the emit-cap phrase is absent). And three
tests that re-rendered one fixture to make one assertion each are hoisted
to a single render.

97 tests, down from 116: -18 sweep cases, -2 from the hoist, +1 identity
row. No assertion was lost; several were added.

Verified by injection: a `.py`-only note change fails the identity pin,
and a dependence in the shared hop sentence fails BOTH rows, confirming the
second row is load-bearing rather than decorative.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* perf(mcp): lazy-import syncGroup so MCP startup skips the group extractor closure

`core/group/service.ts` statically imported `./sync.js`, which pulls all six
contract extractors, five of which statically import the native `tree-sitter`
binding. That put the whole parser stack on every MCP server start, for a
server that never syncs.

Only `groupSync` needs it. The other seven group tools — `group_list`,
`group_impact`, `group_query`, `group_contracts`, `group_status`,
`group_trace`, `group_context` — do not, and now never load it. `syncGroup`
has a single call site, already inside an `async` method, so this is a lazy
`await import(...)` at that call site and nothing else: no signature change,
no async ripple, no change to `local-backend.ts`.

The pattern is already established on this exact module — `cli/group.ts`'s
sync command lazy-imports `sync.js` the same way. `service.ts` was the
outlier.

Measured on a native filesystem (overlayfs; /workspace is a 9p mount that
inflates ESM resolve, so it is not a valid measurement surface), 5 cold runs,
medians:

  dist/mcp/server.js              521 ms -> 133 ms   (-75%)
  dist/mcp/local/local-backend.js 453 ms -> 66 ms    (-85%)
  tree-sitter modules at both entries: 11 -> 0

Same defect class as #2802, which cut the language-provider registry from the
same startup path; this is what remained.

The cost is moved rather than deleted: the first `group_sync` call now pays
the module load. That is the right trade — `group_sync` is already a
long-running operation, and sessions that never sync pay nothing.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): guard MCP startup against the group extractor closure returning

Sibling forbidden-pattern case in the #2802 startup guard, reusing the
concurrent probes it already collects — no new spawn, no new harness.

Asserts that none of `dist/mcp/server.js`, `dist/cli/mcp.js`, or
`dist/mcp/local/local-backend.js` loads a `core/group/extractors/` module or
the native `tree-sitter` package. The parser is matched by package prefix
rather than a bare substring, so a source file that merely mentions the word
can neither satisfy nor trip it.

Verified load-bearing rather than assumed: restoring the static
`import { syncGroup }` in `core/group/service.ts` and rebuilding turns
`dist/mcp/server.js` red and names all seven offenders —
http-route, grpc, thrift, topic, include, manifest and workspace extractors.
Reverted and re-confirmed green.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* perf(mcp): keep the analyze-only CFG closure off MCP server startup (#2802 review)

`mcp/local/pdg-impact.ts` imported `CALLEES_TRUNCATED_SENTINEL` and
`CALLEE_ID_SEP` from `core/ingestion/cfg/emit.ts`. ESM evaluates a module to
import any binding from it, so those two strings dragged the whole analyze-only
CFG closure into every MCP server start.

Measured against a clean build, per entry point: 8 modules — `emit`,
`reaching-defs`, `reaching-defs-graph`, `control-dependence`, `post-dominators`,
`synthetic-escape`, `call-site-harvest`, `reaching-def-reason-codec` — present at
`dist/mcp/server.js`, `dist/mcp/local/local-backend.js` and
`dist/mcp/http-transport.js`.

Same defect class as the language-provider closure this branch already removed,
and the guard could not see it: `FORBIDDEN_RE` covers `core/ingestion/languages/`
and `FORBIDDEN_GROUP_RE` covers `core/group/extractors/|node_modules/tree-sitter`,
neither of which matches `core/ingestion/cfg/`.

The format constants move to a new LEAF module `cfg/callee-cell-format.ts` that
imports nothing; `emit.ts` re-exports both names so every existing importer is
untouched, and producer and consumer still resolve to one definition — the drift
the shared constant exists to prevent stays impossible.

Deleted, not deferred — the same bar #2802 held its own csv-generator proposal
to. After: cfg modules at startup 8 -> 2, and both survivors
(`callee-cell-format`, `reaching-def-reason-codec`) are leaves that import
nothing. Totals: `server.js` 387 -> 380, `local-backend.js` 163 -> 156,
`http-transport.js` 523 -> 516.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(mcp): stop pdgEvidence.ascent claiming a completeness it cannot have (#2802 review)

`examinedComplete` is the field a consumer reads to decide whether
`returnFlowFound: false` is a whole-slice claim. It could be published `true`
over a callee set the descent never finished examining — the exact false
all-clear the field was added to prevent.

Root cause: `bfsReachableBlocks` sets `truncatedByDepth` when its frontier is
still non-empty at the budget, but both call sites inside `interproceduralDescent`
folded only the row-limit flag and dropped the depth flag. The top-level intra
BFS's copy of that same flag was already propagated, so the asymmetry was
unintended — one `if`-pair folding limit-but-not-depth, within a merge that
already folds the node cap too.

Reproduced at `maxDepth: 3`, the shipped default: a criterion calling a helper
whose body is a 5-block dependence chain, with the return-flowing callee on the
block past the clamp. Result reported `truncated: undefined`,
`examinedComplete: true`, `incompleteReasons: []` and an unqualified universal
note sentence.

Fixed by propagating the dropped flags rather than inventing a parallel channel:
`intraDepthBudget` is documented in-file as the SAME clamp the top-level intra
BFS applies, and that one's depth truncation is already result-level. So the
result's own `truncated`/`truncatedBy` were under-reporting for the same reason,
and both surfaces are corrected together.

Four further honesty fixes to the same published record:

- Blocks reached only by the U-C4 ascent went into `reachable` but never
  `hopReached`, so their `calleeIds` cells were never scanned, never counted, and
  could not raise `callee-list-capped`. They are slice blocks; they now enter the
  hop set and get the same treatment as every other one.
- `pdgEvidence.ascent` was absent on the empty-slice early return even though the
  descent had already run and scanned, contradicting the "present iff the descent
  ran" contract this branch itself added to `tools.ts`. Both exits now classify
  through one shared helper so they cannot disagree.
- A block carrying call sites in `callees` but no resolved ids in `calleeIds`
  (the whole-file case where `emit.ts` has no fileMap) silently shrank the
  population while `examinedComplete` still reported `true`. That now raises a
  third reason, `callee-ids-unrecorded`.
- `referencesScanned` is a distinct-callee tally and both surfaces described it as
  a call-site count. Field name kept — a rename is breaking at
  `pdgResultVersion: 2` — and the prose corrected instead.

`PdgAscentIncompleteReason` gains a member, which is additive, so
`pdgResultVersion` stays 2. Visible output change worth knowing: slices whose
callee chain outruns `maxDepth` now report `truncatedBy: 'depth'` where they
previously reported none, and a repo with id-less call sites now reports
`examinedComplete: false`. Both are strictly more honest.

Every behavioural change carries a mutation proof — revert the source, watch the
new test go red, restore. One exception is documented inline rather than faked:
the ascent-side fold cannot be observed independently, because the re-seed shares
the caller's `visited` set and so can only reach past the budget when the
traversal that covered that closure was already cut and had already raised a flag.

Suite: 49 -> 59 tests.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(mcp): anchor each import-closure policy on the edge it polices (#2802 review)

`module-load-probe.ts` makes non-vacuity structural via a required `anchor` — but
the anchor was one per ENTRY while `startup-language-closure.test.ts` now runs TWO
independent policies. The group-extractor policy added in 83e8cf7c5 therefore had
no anchor of its own, and one of its three rows was already vacuous: `cli/mcp.js`
loads four leaf modules and reaches no `core/group/` module at all, so its group
assertion could not fail for any policy-related reason while its
`dist/mcp/stdio-context.js` anchor stayed green.

Proven, not argued. `dist/mcp/local/local-backend.js` is the only static importer
of `core/group/service.js` in the whole build; severing that one edge — the exact
next lazy-load step — and re-probing:

  OLD shape (anchor per entry):  server 385, http-transport 521, local-backend 161
                                 reaches group/service = false, group offenders 0
                                 -> GREEN on all three
  NEW shape (anchor per policy): -> RED on all three, each naming the missing
                                    dist/core/group/service.js

Counts fell only 387->385 and 163->161, so `minModules` was structurally blind to
the severance; the anchor is the only thing that catches it.

`anchor` accepts `string | readonly string[]` and every listed anchor must load.
Existing single-anchor call sites are unchanged. `anchorsOf()` lets the group
`it.each` DERIVE its entries by filtering on the group anchor, with a test pinning
that derivation, so the policy cannot silently register zero cases. `cli/mcp.js`
is dropped from the group policy — it cannot honestly carry that anchor — and the
doc-comment now states the invariant: an anchor is per-POLICY, not per-entry.

Also:

- `mcp/http-transport.js` gets a row. It is the largest startup entry (516
  modules) and `src/cli/mcp.ts` imports it directly rather than through
  `server.js`, so nothing about the server row constrained it. Measured clean
  today; the gap was coverage, not a broken claim.
- The three spawn-based closure tests are registered in `SPAWN_CLI`, so the
  Windows-safety plumbing this branch wrote for them (POSIX normalisation,
  `pathToFileURL`, `NODE_OPTIONS` clearing, array-form `spawn`) is finally
  exercised on the Windows/macOS matrix. Measured cost ~11.7s on Linux; budget
  ~60s on Windows against a 25-minute job.
- `PROBE_TARGET` now wins over `extraEnv`, which was spread last and could have
  silently redirected a probe while `anchor`/`minModules` stayed keyed on `entry`.
- The child's JSON payload is validated through a type predicate instead of a bare
  `as string[]`, and the spawn timeout escalates SIGTERM to SIGKILL so a child
  stalled in native code is reaped rather than orphaned.
- Recorded baselines re-measured (server 380, local-backend 156, cli/mcp 4) and
  relabelled a snapshot rather than a contract — they moved twice inside this
  branch alone. The subset claim was re-verified exactly: 0 of local-backend's 156
  modules are absent from server's 380.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(helpers): survive a failing temp-dir removal instead of leaking the rest (#2802 review)

`createTempDirPool`'s `afterAll` ran a bare `for (const d of created) fs.rmSync(d, {recursive, force})`.
`force` suppresses only `ENOENT` — not the `EBUSY`/`EPERM`/`ENOTEMPTY` class a
Windows runner produces when a pipeline test still holds a handle — so the FIRST
failure threw out of the loop and leaked every directory registered after it.

Pre-existing: all four hand-rolled cleanups this helper consolidated had the same
shape. But the blast radius is now shared across four consumers, which is exactly
why it is worth fixing at the point of consolidation.

Cleanup is now per-directory best-effort via `removeTempDirs`, plus Node's own
documented mitigation for that error class (`maxRetries: 3, retryDelay: 50`),
which costs nothing on the happy path.

Warn rather than swallow or rethrow, and the reasoning is in the doc comment, not
just here: rethrowing would fail an otherwise green suite from `afterAll` over
housekeeping the OS reclaims anyway, where it reads as a test failure and buries
the real result — a Windows EBUSY on a temp dir is not a defect in the code under
test. Silence is the opposite hazard: a systematic leak would be invisible with
nothing naming the responsible suite. The warning carries the path, and the
`mkdtemp` prefix is per-pool, so it names the suite that made it.

Failure is injected through a scripted remover keyed by path (a Map lookup, so no
`if` in a test body and no dependence on producing a real locked handle). Beyond
the three behavioural pins there is a wiring pin — a nested `describe` creates a
real pool and a sibling `it` declared after it asserts the dirs are gone — so the
tested function cannot drift into "tested helper plus an untested copy of the
loop".

Mutation proof: restoring the abort-on-first-failure loop turns 3 of the 5 tests
red, the throw escaping `removeTempDirs` outright so the third real directory is
never attempted. With the fix, `[first, blocked, last].map(existsSync)` is
`[false, true, false]` — the injected failure survives and the directory after it
is really gone, through the remover that actually ships.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(pdg): point the self-diffing receiver pins at #2807, not at this PR (#2802 review)

Both pins named the gap "(#2802 follow-up)". The gap has its own tracking issue —
#2807, "Inference-typed field receivers resolve to no CALLS edges at all" (open,
labeled bug) — and PR #2810 is already open against it. As written, after merge
the gap was discoverable only by reading a KNOWN GAP marker inside a test file,
not from the issue tracker.

Both describe names now read "(known gap: #2807)" and both KNOWN GAP test names
carry the number. #2802 is kept only as provenance: the gap was FOUND during
#2802 work but is pre-existing and independent of it.

Each header gains an explicit "this pin is self-diffing: it will go red on
purpose" section naming #2807 with its exact title, noting #2810 is open against
it at the time of writing, and stating that the pin asserts the gap EXISTS — so
closing #2807 fails it by design, and the correct response is to update the
expected value, not to relax the assertion. The same note is repeated inline
above each KNOWN GAP test, where a maintainer editing it will actually see it.

No pin is weakened. Both deliberately reject `it.fails` in favour of exact
`toEqual` assertions with a non-vacuity probe, and that design is left untouched.

Refs #2802, #2807

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* test(group): cover the lazy syncGroup import that no test reached (#2802 review)

9ea9676dc turned `GroupService.groupSync`'s `syncGroup` into
`await import('./sync.js')` — this branch's one changed control-flow line in
production code — and nothing exercised it. Every existing test stopped short:
`service.test.ts` returns at the empty-name guard; `group-service-not-found.test.ts`
mocks `loadGroupConfig` to reject and never invokes its `syncGroupMock`;
`group-sync.test.ts` imports `syncGroup` directly, bypassing `GroupService`; and
the startup guard asserts only the negative, that `sync.js` is absent at startup.
`tsc` catches a path typo, but nothing verified the import resolves and hands off
correctly — while every production `group_sync` call goes through that line.

No production change was needed; the reviewed design was sound. This is the
missing coverage.

The happy-path test mocks nothing: it points `GITNEXUS_HOME` at a pool temp dir,
seeds a real `group.yaml`, and calls `groupSync`, so `loadGroupConfig` resolves,
`groupDir` is found, and execution falls through into the REAL `syncGroup`. What
makes a real sync reachable with no indexed repo: an empty registry puts both
members in `missingRepos`, but one declared manifest link still yields
synthetic-UID contracts. It asserts the returned counts AND reads back the
`contracts.json` that real `syncGroup` wrote into `groupDir` via the production
`readContractRegistry`, which pins the option handoff too.

Two further tests use `vi.doMock` to re-evaluate the service against a `sync.js`
whose load throws: one asserts the call rejects with the load failure in its
`cause` chain — so the caller gets a catchable rejection, not a floating
unhandled one — and one asserts both pre-import guards still answer with
`sync.js` unloadable, which is also a structural pin that the module has no
STATIC import of it (a static one would throw at re-import, before any call).

Mutation proofs: pointing the specifier at `./sync-nope.js` turns 2 of 3 red
("Cannot find module .../sync-nope.js ... at GroupService.groupSync
service.ts:349"); aliasing a real-but-wrong export turns 1 red. Restored, all 3
green, and `service.ts` verified byte-identical to HEAD.

Out of scope, stated rather than glossed: the final `isError: true` MCP envelope
is produced above `GroupService` and needs a full `LocalBackend`; the rejection
test is the in-scope half of that claim.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor(mcp): close the gaps a cleanup pass found in the #2802 review fixes

Quality pass over the review-response series (reuse / simplification /
efficiency / altitude). No behaviour change except where noted.

The two that mattered:

- **The cfg/emit fix had no guard.** `FORBIDDEN_RE` covers
  `core/ingestion/languages/` and `FORBIDDEN_GROUP_RE` covers
  `core/group/extractors/|tree-sitter`; neither matches `core/ingestion/cfg/`.
  Because `emit.ts` re-exports the constants, pointing `pdg-impact.ts` back at
  `cfg/emit.js` typechecks identically and silently restores all 7 modules.
  Verified: with the import reverted, `tsc --noEmit` still exits 0 and every
  test stayed green before this commit; after it, 3 rows go red naming the
  offenders. Written as an ALLOWLIST of genuine leaves rather than a denylist of
  the 7 already-suffered modules, because the next regression is a module nobody
  has thought of yet.

- **`FORBIDDEN_GROUP_RE`'s parser matcher was forward-slash only** while both
  sibling probe regexes spell the separator `[\\/]`. Native bindings arrive via
  the `require.cache` channel as absolute paths and `toRepoRelativePosix` only
  normalises paths inside the repo root, so a hoisted `node_modules` renders as
  `…\node_modules\tree-sitter\…` on Windows and matched nothing. The same series
  put this file on the Windows matrix, where that half of the assertion would
  have been vacuous.

Reuse — three re-implementations of existing helpers:

- `removeTempDirRecursive` re-rolled `fs.rmSync` retries; it now delegates to
  `cleanupTempDirSync` (`test-db.ts`), the repo's Windows-lock-aware remover.
  The copy had already drifted on both knobs that matter — 3 retries at 50 ms
  vs 5 at 100–400 ms, and warn-on-everything vs swallow-lock-codes-rethrow-rest
  — which is how one half of a suite goes green-with-a-warning on the same
  `EBUSY` the other half fails on. The per-directory try/warn loop, which is the
  actual fix, is unchanged.
- `errorChainText` re-rolled the cause-chain walk that `causeChain`
  (`src/lib/utils.ts`) exists to be the single copy of — its own doc asks
  callers not to.
- The SIGKILL escalation (a timer, an `unref`, and two `clearTimeout`s) is
  `spawn`'s own `killSignal` option, which Node's `timeout` already delivers.

Simplification and altitude:

- `'callee-ids-unrecorded'` documented ONE of its three producer paths. The
  unnamed common one is a call site that did not RESOLVE — exactly the
  receiver gaps this repo pins (#2807) — so on a real index the reason fires
  broadly, driven by resolution quality rather than a missing `--pdg` layer,
  and "re-run analyze --pdg" is the wrong remedy for it. Doc now names all
  three and states the consequence: `examinedComplete: true` is the strong,
  rare signal.
- The derived policy-entry list was re-pinned against a hand-written 3-element
  literal, reinstating one layer down the list the derivation removes. Now
  asserts the properties that are actually at risk — non-emptiness (a policy
  going silent) and `cli/mcp.js` staying excluded (a row that cannot fail).
- A test fixture spread `ascentBlockCell: 'idless'` and then overrode it to
  `'capped'` in both runs, so the id-less shape never reached the mock while
  reading as though it did.
- `idlessCallSites` is sticky, so its per-row string allocation now
  short-circuits once set.
- Dropped an unused `export` on `CleanupWarner`.

Refs #2802

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* revert(ci): unregister the module-load closure guards from the Windows matrix

Registering the three `dist/` closure guards in `SPAWN_CLI` turned the Windows
`platform-sensitive 1/3` shard red at the 20-minute watchdog. Baseline
83e8cf7c5 was green on all three shards; a4245119c (which added them) failed
1/3; d0b201442 failed the same way.

It is not the files themselves. On the Windows runner they are among the
cheapest in the suite — `registry-import-closure` 448 ms, `import-closure`
53 ms — and both passed. vitest shards this list by file COUNT, not runtime, so
adding three files RESHUFFLED the split: shard 1 went to 32 files against 26 and
29, concentrating the heavy CLI e2e suites. It timed out with `cli-e2e`,
`group/cross-trace-e2e`, `lbug-orphan-sidecar-recovery` and `server-http-startup`
still queued — `cli-e2e` being the ~50-spawn suite whose setup flakiness already
needed fixing once (PR #2000).

That clustering fragility is pre-existing and this file's own header documents
it (#2449: "the heaviest spawn suites can cluster on one shard", busiest Windows
shard already at 14m57s against the old watchdog). These three files only tipped
it over, and unblocking the PR beats holding it for a CI-infra fix that belongs
in its own change.

Reverted rather than worked around: raising the shard count would keep the
coverage but is a repo-wide CI change made on a 25-minute feedback loop with no
guarantee the reshuffle balances, and this PR is about MCP startup. The removed
entries are replaced by a comment recording WHY they are absent, what they were
measured to cost, and the precondition for re-landing them — so the gap is
documented at the point someone would otherwise re-add them blind.

Verified: the emitted file list is byte-identical to 83e8cf7c5's, so the shard
split returns to the configuration that was green.

The Windows-specific bug this series found is unaffected — `FORBIDDEN_GROUP_RE`
now spells its separator `[\\/]` like its siblings, which was a real
forward-slash-only vacuity, and that fix stays.

Refs #2802, #2449

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(ci): shard the cross-platform matrix by measured weight, not file count

Restores the three `dist/` module-load closure guards to the Windows/macOS
matrix, and fixes the reason they could not stay there.

They must run on every OS — the shared probe in `test/helpers/module-load-probe.ts`
IS the platform-varying code (array-form `process.execPath` spawn, cleared
NODE_OPTIONS, `pathToFileURL` because Windows rejects a bare absolute path as an
ESM specifier, and a `path.sep`→POSIX normalisation the anchors and offender
regexes depend on). Ubuntu-only coverage of a platform guard is no coverage.

The earlier attempt turned Windows `platform-sensitive 1/3` red at the 20-minute
watchdog, and the reflex fix — unregistering them — treated the symptom. The
files are among the cheapest in the suite (measured 448 ms, 53 ms, sub-second,
and both that completed passed). The defect is that `run-cross-platform.ts`
handed vitest all 84 files plus `--shard=i/n`, and vitest partitions by file
COUNT. Runtimes here span three orders of magnitude, so a count-split is blind
to the thing that decides the budget, AND re-partitions on every insertion:
adding three free files reshuffled the list and happened to co-locate `cli-e2e`
(361 s) with `cli-limit-e2e` (75 s) and `analyze-heap-oom-e2e` (23 s) — 32 files
against 26 and 29 — which timed out with four still queued.

The split now happens in `scripts/cross-platform-shard.ts`, longest-processing-
time first over measured Windows runtimes, and only the chosen shard's files are
passed to vitest (`--shard` is consumed, never forwarded — forwarding would
re-partition the slice a second time and silently drop most of it).

Weights are measured, from the last green matrix run plus the timed files of the
failing one, and every file also carries an 8 s per-file floor. That floor is
calibrated, not guessed: the last green busiest shard ran 736 s of wall clock
over ~511 s of attributed file time. Without it the balancer isolates the two
monsters and then piles every light file onto the remaining shards — trading a
runtime imbalance for a count imbalance that costs the same.

Result at TOTAL=3, with the three guards back in: 521 s / 527 s / 519 s across
20 / 33 / 34 files. The previous green configuration's busiest shard was 736 s,
so this is better balanced than the state before any of this, and the busiest
shard is now bounded by construction rather than by sort-order luck.

`test/unit/cross-platform-shard.test.ts` pins the properties, and the
load-bearing one is not "the split is even" — it is "adding a cheap file cannot
move a heavy one", the property whose absence caused the outage. Two details in
that test are themselves load-bearing, and earlier drafts got both wrong and were
vacuous: the inserted names must sort EARLY (names sorting last disturb nothing
under any scheme) and the count must not be a multiple of the shard total
(adding exactly `total` files leaves an equal-weight round-robin in the same
rotation). Mutation-proved: replacing `weightOf` with a constant — i.e.
count-based sharding — turns that test and the per-file-floor test red; restored,
all 8 pass.

Refs #2802, #2449

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Gergo Magyar <gergomagyar0@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-03 21:26:13 +01:00