feat(enrichment): long-file / big-function heuristic analyzer

[bohdansolovie]

Summary

Fixes #2019

• Add SizeSmellFinding and a local sizeSmell analyzer that flags (1) an estimated resulting file length over 400 lines from hunk headers and (2) newly-added function/arrow function bodies whose added brace span exceeds 60 lines
• Pure compute over unified diffs; skips test paths; caps at 25 findings; documents that file length is patch-estimated (visible hunks only)
• Register the analyzer in the REES registry with render/docs/metadata; sync src/review/enrichment-analyzer-names.ts
• Add review-enrichment/test/size-smell.test.ts covering long-file threshold, big-function detection, clean sub-threshold case, cap, and brief rendering

Test plan

• cd review-enrichment && npm run build && npm run metadata && node --test test/size-smell.test.ts test/analyzer-registry.test.ts
• CI validate-code

Made with Cursor

[superagent-security]

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

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Warning

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⏸️ Gittensory review result - manual review recommended

_{Review updated: 2026-07-05 15:20:44 UTC}

10 files · 1 AI reviewer · no blockers · readiness 62/100 · CI green · clean

⏸️ Suggested Action - Manual Review

Review summary
This adds a local size-smell enrichment analyzer, wires it into the registry/render/name metadata, and syncs the generated UI/metadata surfaces. The core long-file estimate and added-function brace scan are coherent for unified diffs, skip test paths, and enforce the configured cap across the normal production entrypoint. I do not see a reachable correctness break in the visible diff.

Nits — 6 non-blocking

• nit: review-enrichment/src/analyzers/size-smell.ts:14 only recognizes function declarations and parenthesized arrow functions, so common forms like `const f = async x => {` and object/class methods will be silently skipped despite the analyzer name reading broadly as big-function detection.
• nit: review-enrichment/src/analyzers/size-smell.ts:40 counts braces after `codeOnly()` but still treats template/object/type braces as structural, so the heuristic can over-count or under-count unusual added code; the docs should call this out as heuristic-only or add tests for the known limits.
• nit: review-enrichment/test/size-smell.test.ts:53 says it “respects the cap” but that test only verifies test-file skipping; the cap coverage lives in the next test, so the test name is misleading.
• Add a focused test in review-enrichment/test/size-smell.test.ts for an unparenthesized async arrow function and either support it in FUNCTION_BODY_OPEN_RE or document that it is intentionally out of scope.
• Rename the mixed skip/cap test at review-enrichment/test/size-smell.test.ts:53 to cover only test-path skipping, since the file-level cap is already tested separately.
• 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	✅ Linked	#2019
Related work	⚠️ 3 scoped overlaps	Top overlaps are listed below; lower-confidence bulk is hidden.
Change scope	❌ 8/20	High 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: 312 registered-repo PR(s), 185 merged, 9 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	bohdansolovie; Gittensor profile; 312 PR(s), 9 issue(s).
Gate result	✅ Passing	No configured blocker found.

Review context

• Author: bohdansolovie
• Role context: outside_contributor
• Public audience mode: oss maintainer
• Lane context: Repository registration is not available in the local Gittensory cache.
• Public profile languages: Python, C++, JavaScript
• Official Gittensor activity: 312 PR(s), 9 issue(s).
• Related work: Titles/paths share 7 meaningful terms. (issue #2023, issue #2019)
• Related work: Titles/paths share 7 meaningful terms. (issue #2029, issue #2019)
• Related work: Titles/paths share 7 meaningful terms. (issue #2033, issue #2019)
• Additional title-only matches omitted; title-only overlap does not block.

Contributor next steps

• Review top overlaps.
• Add a concise scope and risk note.
• Await review-lane availability.
• Refresh registry data or choose a registered active repo.
• 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 93.09%. Comparing base (9a125e9) to head (866ad9c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3515   +/-   ##
=======================================
  Coverage   93.09%   93.09%           
=======================================
  Files         301      301           
  Lines       31450    31450           
  Branches    11483    11483           
=======================================
  Hits        29279    29279           
  Misses       1517     1517           
  Partials      654      654           

Files with missing lines	Coverage Δ
src/review/enrichment-analyzer-names.ts	100.00% <ø> (ø)

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