fix(signals): compare local branch repo names case-insensitively

[JSONbored]

Motivation

• A recent change scoped open-PR pressure counting with a case-sensitive repo equality check, which causes same-repo open PRs to be missed when the caller- or git-derived repoFullName uses different casing.

Description

• Replace strict === repoFullName comparison with the existing case-insensitive sameRepo() helper in src/signals/local-branch.ts when computing contributorOpenPrCount.
• Add a regression unit test in test/unit/local-branch.test.ts that exercises differently-cased repoFullName and contributor login values to ensure same-repo open PRs are counted and pressure guidance recommends cleanup first.

Testing

• Ran the unit test file with npm test -- --run test/unit/local-branch.test.ts, and all tests passed (44 passed).
• Ran type checking with npm run typecheck (tsc --noEmit), which completed without errors.

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Codex Task

[ghost]

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✅ Maintainer review — Ready to merge

Reviewed 2 changed file(s) — two independent AI reviewers, synthesized. ✅ Safe to merge — both reviewers found no blocking issues.

Summary

The change correctly introduces case‑insensitive repository name comparison using the existing sameRepo helper, fixing a bug where contributor open‑PR counts were missed when repo name case differed. The added unit test validates the new behavior. No security concerns are introduced, and the modification improves maintainability. All existing tests continue to pass and the new test covers the edge case.

💡 Nits — non-blocking, optional

• Consider adding a brief comment explaining why sameRepo is used here for future readers.
• If sameRepo is not already imported in this file, add the appropriate import statement to avoid a ReferenceError.
• Consider adding a brief comment explaining why sameRepo is used here for clarity.

[ghost]

Note

Gittensory Gate skipped

PR closed before full evaluation. No late first comment was created.

Signal	Result	Evidence	Action
Gate result	⚠️ Skipped	#965 is no longer open.	No action.

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Checked by Gittensory, a quiet PR intelligence layer for OSS maintainers.

[superagent-security]

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.64%. Comparing base (c585389) to head (7f2f3f7).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #965   +/-   ##
=======================================
  Coverage   96.64%   96.64%           
=======================================
  Files         110      110           
  Lines       15033    15033           
  Branches     5432     5432           
=======================================
  Hits        14528    14528           
  Misses        104      104           
  Partials      401      401           

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[ghost]

Recommend close (rejected) — held for your decision

[ghost]

Held for maintainer (guardrail_area) — correct + CI green