fix(signals): classify C# protobuf stubs as generated

[jimcody1995]

Summary

• Extend isGeneratedFile in path-matchers.ts to treat .pb.cs as protoc-generated output, matching the existing .pb.go/.pb.kt/.pb.dart handling (fix(signals): classify Dart protobuf stubs as generated #3412, fix(signals): classify Kotlin protobuf stubs as generated #3424).
• The C# protoc plugin emits messages.pb.cs stubs; without this, classifyChangedFile miscounted them as substantive source. Hand-written .cs is unaffected — the .pb infix is required (distinct from .Designer.cs/.g.cs codegen already recognized).

Scope

• Conventional Commit title format.
• Focused — path-matchers + unit tests only.
• Follows CONTRIBUTING.md.
• No linked issue needed.

Validation

• git diff --check
• npm run test:ci on Node 22
• npm audit --audit-level=moderate — 0 vulnerabilities
• Unit test covers proto/messages.pb.cs as generated and src/MainForm.cs as non-generated

Safety

• No secrets, auth, or UI changes.
• N/A for UI Evidence.

UI Evidence

N/A — backend path classifier only.

Notes

Conflict avoidance: Touches only src/signals/path-matchers.ts and test/unit/path-matchers.test.ts. Zero overlap with open PRs (#3435/#3406 engine, #3434 enrichment, #3433 integrations, #3432 repo-policy tests, #3431 rees release, #3429 release workflow, #3414 review-evasion, #3314 miner, #3305 enrichment-wire, #3304 queue/gate). Merges cleanly after any of those land without rebase.

Made with Cursor

[superagent-security]

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

[gittensory-orb]

Warning

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⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-05 07:11:04 UTC}

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

⏸️ Suggested Action - Manual Review

Review summary
This focused change extends the generated-file matcher to classify C# protobuf stubs ending in `.pb.cs` the same way as the existing protobuf outputs, and the normalization/lowercasing path means mixed-case or Windows-style inputs follow the existing behavior. The added unit case exercises the actual `isGeneratedFile` helper that feeds `classifyChangedFile`, so the core behavior is covered; I do not see a reachable correctness break in the diff. The only cleanup I would ask for is tightening the comment/test coverage around the hot-path classifier so the PR documents and verifies the claimed `classifyChangedFile` effect directly.

Nits — 5 non-blocking

• nit: `src/signals/path-matchers.ts:55` now has a slightly awkward duplicate comment line listing only `.pb.dart`/`.pb.kt`/`.pb.cs`; fold it into the preceding protoc sentence or change it to a generic statement that the `.pb` infix protects hand-written sources.
• nit: `test/unit/path-matchers.test.ts:81` proves `isGeneratedFile("proto/messages.pb.cs")`, but the PR description specifically calls out `classifyChangedFile` miscounting, so add one representative classifier assertion to keep the hot-path contract explicit.
• In `test/unit/path-matchers.test.ts` under `classifyChangedFile`, add `["proto/messages.pb.cs", "generated"]` to the representative cases so the claimed signals path is covered directly.
• In `src/signals/path-matchers.ts`, simplify the protoc comment to something like `The .pb infix keeps hand-written sources in these languages from matching.`
• Code changes lack test evidence — Add focused regression tests or explain why existing coverage is sufficient.

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewer
Linked issue	✅ No-issue rationale	PR body explains why no issue is linked.
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 (no linked issue context).
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: 58 registered-repo PR(s), 31 merged, 0 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	jimcody1995; Gittensor profile; 58 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: 58 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.
• Link the issue being solved, or explicitly explain why this is a no-issue PR.

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 93.47%. Comparing base (1ad5b35) to head (3a84b80).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3437   +/-   ##
=======================================
  Coverage   93.47%   93.47%           
=======================================
  Files         292      292           
  Lines       30797    30797           
  Branches    11225    11225           
=======================================
  Hits        28786    28786           
  Misses       1355     1355           
  Partials      656      656           

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

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[gittensory-orb]

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