test(config): lock in review.changed_files_summary plumbing (#2146)

[luciferlive112116]

Closes #2146

Summary

• Add a config-templates inventory test that locks in the shipped review.changed_files_summary plumbing: docs entry in gittensory.full.yml, manifest parse round-trip, and resolveReviewPromptOverrides boolean helper (unset → false).

Validation

• npm run typecheck
• npx vitest run test/unit/config-templates.test.ts

UI Evidence

N/A — test-only.

[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 93.29%. Comparing base (db8529c) to head (1d322dc).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3737   +/-   ##
=======================================
  Coverage   93.29%   93.29%           
=======================================
  Files         317      317           
  Lines       32347    32347           
  Branches    11871    11871           
=======================================
  Hits        30179    30179           
  Misses       1537     1537           
  Partials      631      631           

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Warning

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⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-06 06:55:20 UTC}

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

⏸️ Suggested Action - Manual Review

Review summary
This is a test-only addition that locks in the existing review.changed_files_summary manifest plumbing: it verifies the docs comment exists in gittensory.full.yml, that parseFocusManifest defaults changedFilesSummary to null, that resolveReviewPromptOverrides collapses unset to false and passes through explicit true/false, and that reviewConfigToJson round-trips the true case. All assertions match already-shipped production behavior rather than introducing new logic, and CI is green across typecheck/tests/coverage. No production code is touched, so there's no functional risk here.

Nits — 4 non-blocking

• The `expect(full).toMatch(/# changed_files_summary:/)` assertion at test/unit/config-templates.test.ts:76 duplicates the doc-field check already covered by the existing 'feat(review): add review.effort_score toggle + "review effort: N/5 (~M min)" line in the unified comment #2069' test a few lines above in the same file — could drop it here to keep the new test focused on the parse/resolve/serialize round-trip.
• The test doesn't assert `reviewConfigToJson` for the `off`/default cases (only for `on`), so the false-branch serialization of changed_files_summary isn't locked in by this test.
• Consider adding `expect(reviewConfigToJson(off.review)).toEqual({ changed_files_summary: false })` (or checking the omitted-key behavior for the null/default case) to fully round-trip all three states.
• If the doc-string check is kept, consider a comment noting it's intentionally duplicated for locality with the feat(review): review.changed_files_summary manifest toggle + docs #2146 test rather than removing the feat(review): add review.effort_score toggle + "review effort: N/5 (~M min)" line in the unified comment #2069 test's coverage.

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewer
Linked issue	✅ Linked	#2146
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: 180 registered-repo PR(s), 94 merged, 18 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	luciferlive112116; Gittensor profile; 180 PR(s), 18 issue(s).
Gate result	✅ Passing	No configured blocker found.

Review context

• Author: luciferlive112116
• Role context: outside_contributor
• Public audience mode: oss maintainer
• Lane context: Repository registration is not available in the local Gittensory cache.
• Public profile languages: not available
• Official Gittensor activity: 180 PR(s), 18 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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[loopover-orb]

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