feat(engine): add bestRankedOpportunity

[kiannidev]

Summary

• Add bestRankedOpportunity in @jsonbored/gittensory-engine — returns the highest-scoring generic ranked candidate or null when the list is empty.
• Thin wrapper over rankOpportunities for miner discovery flows that only need a single pick.
• Vitest coverage at 100% patch on the new helper.

Test plan

• COVERAGE_NO_THRESHOLDS=1 npx vitest run test/unit/ranked-opportunity-best-pick.test.ts --coverage
• npx diff-cover coverage/lcov.info --compare-branch=main --fail-under=99 → 100%
• npm run build --workspace @jsonbored/gittensory-engine && npm run build:miner

Made with Cursor

[superagent-security]

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

[loopover-orb]

Warning

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⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-05 05:13:20 UTC}

3 files · 1 AI reviewer · no blockers · readiness 55/100 · CI pending · blocked

⏸️ Suggested Action - Manual Review

Review summary
This adds a narrow `bestRankedOpportunity` helper that delegates scoring and tie behavior to the existing `rankOpportunities` implementation, then exposes it through the engine barrel. The tests cover the empty case, winner selection, tie preservation, and barrel export, so the visible change is coherent and low risk.

Nits — 3 non-blocking

• nit: packages/gittensory-engine/src/ranked-opportunity-best-pick.ts:8 repeats the full projected return type instead of reusing the existing helper’s output type, which makes this wrapper easier to drift if `rankOpportunities` changes its shape.
• packages/gittensory-engine/src/ranked-opportunity-best-pick.ts:8 could use `ReturnType<typeof rankOpportunities<T>>[number] | null` or a shared exported result type from `opportunity-ranker.ts` if one already exists, so this thin wrapper stays mechanically tied to the delegated function.
• Readiness score is below the configured threshold — Use the readiness panel as advisory maintainer context; the score does not block this PR.

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewer
Linked issue	⚠️ Missing	No linked issue or no-issue rationale found.
Related work	⚠️ 1 scoped overlap	Top overlaps are listed below; lower-confidence bulk is hidden.
Change scope	❌ 8/20	High 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: 1334 registered-repo PR(s), 648 merged, 49 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	kiannidev; Gittensor profile; 1334 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: 1334 PR(s), 49 issue(s).
• Related work: Titles/paths share 8 meaningful terms. (issue #2276, issue #2287)

Contributor next steps

• Explain no-issue PR.
• Review top overlaps.
• Add a concise scope and risk note.
• 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.
• Check active issues and PRs before submitting.

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 93.89%. Comparing base (3fb2d1b) to head (4d9fb50).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3368   +/-   ##
=======================================
  Coverage   93.88%   93.89%           
=======================================
  Files         283      284    +1     
  Lines       30572    30574    +2     
  Branches    11137    11138    +1     
=======================================
+ Hits        28704    28706    +2     
  Misses       1211     1211           
  Partials      657      657           

Files with missing lines	Coverage Δ
...tensory-engine/src/ranked-opportunity-best-pick.ts	100.00% <100.00%> (ø)

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