fix(signals): classify Java gRPC service stubs as generated

[jimcody1995]

Summary

Extend isGeneratedFile to recognize grpc-java service stubs (*Grpc.java), matching the existing Swift .grpc.swift and Kotlin GrpcKt.kt conventions. Includes positive/negative isGeneratedFile / classifyChangedFile assertions and a classification-table entry.

Fixes #1957

Scope

• The PR title follows type(scope): short summary Conventional Commit format.
• This PR is focused and does not mix unrelated backend, UI, MCP, docs, dependency, and deploy changes.
• This follows CONTRIBUTING.md and does not reintroduce GitHub Pages, VitePress, site/, or CNAME.
• I linked an open issue (Changed-files summary table in the unified review comment #1957 changed-files summary depends on accurate path-matchers classification).

Validation

• git diff --check
• npm run test:ci on Node 22
• npm audit --audit-level=moderate — 0 vulnerabilities
• Unit tests cover isGeneratedFile, classifyChangedFile, and the representative cases table

If any required check was skipped, explain why:

• None skipped.

Safety

• No secrets, wallet details, hotkeys, coldkeys, user PATs, private keys, raw trust scores, private rankings, or private maintainer evidence are exposed.
• No auth, cookie, CORS, GitHub App, Cloudflare, or session changes.
• N/A for UI Evidence.

UI Evidence

N/A — signals-only change with no visible UI.

Notes

Incremental path-matcher parity for #1957 (group changed files by source/test/docs/config/generated via path-matchers). Does not deliver the summary-table renderer — only closes a generated-classification gap for grpc-java stubs.

Conflict avoidance: Touches only src/signals/path-matchers.ts and test/unit/path-matchers.test.ts. Zero overlap with open PRs (#3595 pg-queue, #3594 enrichment exhaustiveness-drift).

Made with Cursor

[superagent-security]

Superagent didn't find any vulnerabilities or security issues in this PR.

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Warning

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⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-05 18:34:05 UTC}

2 files · 1 AI reviewer · no blockers · readiness 80/100 · CI green · clean

⏸️ Suggested Action - Manual Review

Review summary
This is a narrow, well-scoped fix that adds a `/grpc\.java$/` regex to `isGeneratedFileFrom` in src/signals/path-matchers.ts, following the exact same convention already used for Swift (`.grpc.swift`) and Kotlin (`grpckt.kt`) gRPC stubs. The change is correct: since `norm` is already lowercased, the regex matches any path ending in `grpc.java` (e.g. `GreeterGrpc.java`) while leaving hand-written sources like `Greeter.java` unmatched, exactly as the new tests assert. Tests cover both `isGeneratedFile` and `classifyChangedFile` positive/negative cases and add a row to the representative classification table, consistent with the file's existing test structure.

Nits — 3 non-blocking

• The bare `/grpc\.java$/` pattern (like the existing `grpckt\.kt$` one) would also match a literal file named `grpc.java` with no class-name prefix, which is an unlikely but theoretically hand-writable filename — not new to this diff, just an inherited edge case worth a comment if it ever bites.
• The updated block comment in src/signals/path-matchers.ts:56-62 is getting long with each new plugin; consider a small per-ecosystem list structure if more gRPC languages get added, though it's a stylistic call, not required here.
• Consider grouping the Swift/Kotlin/Java gRPC-stub regexes into a single alternation (e.g. `/\.(grpc\.swift|grpckt\.kt|grpc\.java)$/`) if more languages get added later, purely for readability — not necessary for this PR's scope.

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewer
Linked issue	✅ Linked	#1957
Related work	✅ No active overlap found	No same-issue or scoped active PR overlap found.
Change scope	✅ 20/20	Low review scope from cached public metadata (1 linked issue).
Validation posture	❌ 5/25	Preflight is holding this PR: the review lane is unavailable, so it is not ready for automated review.
Contributor workload	✅ 10/10	Author activity: 115 registered-repo PR(s), 80 merged, 0 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	jimcody1995; Gittensor profile; 115 PR(s), 0 issue(s).
Gate result	✅ Passing	No configured blocker found.

Review context

• Author: jimcody1995
• Role context: outside_contributor
• Public audience mode: oss maintainer
• Lane context: Repository registration is not available in the local Gittensory cache.
• Public profile languages: TypeScript, JavaScript
• Official Gittensor activity: 115 PR(s), 0 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Await review-lane availability.
• Refresh registry data or choose a registered active repo.

Signal definitions

• Related work = same linked issue, overlapping active PRs, or title/path similarity.
• Change scope = cached public metadata such as size labels, draft state, and review-burden hints.
• Validation posture = whether the PR provides enough public validation/test evidence for maintainer review.
• Contributor workload = public contributor activity and cleanup pressure, not a repo-wide quality failure.
• Contributor context = public GitHub/Gittensor identity context; non-Gittensor status is not a blocker.

_{🟩 Safe / merged · 🟦 Advisory · 🟨 Held for review · 🟥 Blocked / closed}

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.19%. Comparing base (b98229d) to head (d102fe6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3598   +/-   ##
=======================================
  Coverage   93.19%   93.19%           
=======================================
  Files         313      313           
  Lines       31874    31874           
  Branches    11666    11666           
=======================================
  Hits        29705    29705           
  Misses       1517     1517           
  Partials      652      652           

Files with missing lines	Coverage Δ
src/signals/path-matchers.ts	88.46% <ø> (ø)

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Gittensory approves — the gate is satisfied and CI is green.