feat(engine): honor candidatePaths in metadata lane-fit scoring

[kiannidev]

Summary

• Add computeMetadataLaneFit in @jsonbored/gittensory-engine: label-only lane fit by default, full path+label computeLaneFit when optional candidatePaths are present on a metadata candidate.
• Wire buildMetadataRankInput to use the new helper so discovery batches can respect wantedPaths / blockedPaths from .gittensory-miner.yml when path hints are available.
• Extend MetadataCandidateIssue with optional candidatePaths (backward compatible — absent paths keep existing label-only behavior).

Why no linked issue

Small, self-contained engine parity gap: analyze-phase ranking already uses path+label goal matching via computeLaneFit, but metadata fan-out only had labels. This closes that gap without changing miner CLI wiring or hosted review code.

Conflict avoidance

Touches only packages/gittensory-engine/** and test/unit/opportunity-metadata-signals.test.ts. Does not overlap with open PRs #3278 (miner CLI), #3284 (enrichment secret-scan), #3255 (review guardrail), or #3281 (grafana).

Test plan

• npm run build --workspace @jsonbored/gittensory-engine
• npm run build:miner (engine barrel consumed by miner)
• npx vitest run test/unit/opportunity-metadata-signals.test.ts (21 tests)
• Engine package lane-fit tests (computeMetadataLaneFit fallback, path match, blocked path, malformed paths)
• CI validate / validate-code / codecov patch+project / orb review agent

Made with Cursor

[superagent-security]

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

[loopover-orb]

Caution

🟥🟥🟥🟥🟥🟥🟥🟥🟥🟥🟥🟥

🛑 Gittensory review result - fixes required

_{Review updated: 2026-07-05 00:57:31 UTC}

6 files · 1 AI reviewer · no blockers · readiness 73/100 · CI failing · unstable

🛑 Suggested Action - Fix Blockers

Review summary
The change cleanly adds a metadata-specific lane-fit path that preserves the existing label-only behavior when `candidatePaths` are absent and delegates to the shared path+label `computeLaneFit` only when usable paths are present. The wiring in `buildMetadataRankInput` is narrow, the engine barrel export is updated, and the tests exercise fallback, wanted-path, blocked-path, and integration behavior. I do not see a reachable correctness break in the provided diff.

Nits — 4 non-blocking

• nit: `packages/gittensory-engine/src/miner-goal-lane-fit.ts:24` still says discovery metadata has labels only and path gating belongs in analyze, which is stale now that this same module exposes path-aware metadata lane fit.
• `packages/gittensory-engine/src/miner-goal-lane-fit.ts:24` should narrow that comment to `computeMinerGoalLaneFit` specifically, for example: `Path-based fit is intentionally omitted from this label-only helper; use computeMetadataLaneFit when metadata includes candidatePaths.`
• `packages/gittensory-engine/test/miner-goal-lane-fit.test.ts:91` could add one path-present case with a malformed label entry so the new `computeLaneFit` branch preserves the defensive label behavior already covered for `computeMinerGoalLaneFit`.
• Readiness score is below the configured threshold — Use the readiness panel as advisory maintainer context; the score does not block this PR.

CI checks failing

• codecov/patch — 81.81% of diff hit (target 99.00%)

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewer
Linked issue	⚠️ Missing	No linked issue or no-issue rationale found.
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: 1313 registered-repo PR(s), 629 merged, 49 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	kiannidev; Gittensor profile; 1313 PR(s), 49 issue(s).
Gate result	✅ Passing	No configured blocker found.

Review context

• Author: kiannidev
• 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, MDX, C++, HTML, Rust
• Official Gittensor activity: 1313 PR(s), 49 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• Explain no-issue PR.
• 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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• Re-run Gittensory review

[codecov]

Codecov Report

❌ Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.24%. Comparing base (3875335) to head (cb2133b).

Files with missing lines	Patch %	Lines
...kages/gittensory-engine/src/miner-goal-lane-fit.ts	81.81%	0 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (81.81%) is below the target coverage (99.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3286      +/-   ##
==========================================
+ Coverage   94.13%   94.24%   +0.10%     
==========================================
  Files         276      276              
  Lines       30236    30247      +11     
  Branches    11016    11020       +4     
==========================================
+ Hits        28464    28507      +43     
+ Misses       1127     1081      -46     
- Partials      645      659      +14     

Files with missing lines	Coverage Δ
...ages/gittensory-engine/src/opportunity-metadata.ts	100.00% <ø> (ø)
...kages/gittensory-engine/src/miner-goal-lane-fit.ts	84.84% <81.81%> (-1.52%)	⬇️

... and 1 file with indirect coverage changes

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[loopover-orb]

Gittensory is closing this pull request on the maintainer's behalf (CI is failing (codecov/patch)). This is an automated maintenance action — to pursue this change, please open a new pull request with the issues resolved. Closed PRs may be analyzed later to improve review accuracy, but they are not automatically reopened or re-reviewed.