fix(signals): classify HTML source maps as generated

[jimcody1995]

Summary

• Extend isGeneratedFile in path-matchers.ts to treat .html.map as generated output, matching the existing .vue.map/.mdx.map/.sass.map handling (fix(signals): classify vue/svelte/astro source maps as generated #3357, fix(signals): classify MDX source maps as generated #3446, fix(signals): classify Sass source maps as generated #3453).
• HTML is a first-class front-end extension in review/visual/paths.ts; bundler source-map siblings were still miscounted as substantive source.

Scope

• Conventional Commit title format.
• Focused — path-matchers + unit tests only.
• Follows CONTRIBUTING.md.
• No linked issue needed.

Validation

• git diff --check
• npm run test:ci on Node 22
• npm audit --audit-level=moderate — 0 vulnerabilities
• Unit test covers dist/index.html.map as generated via isGeneratedFile

Safety

• No secrets, auth, or UI changes.
• N/A for UI Evidence.

UI Evidence

N/A — backend path classifier only.

Notes

Conflict avoidance: Touches only src/signals/path-matchers.ts and test/unit/path-matchers.test.ts. Zero overlap with open PRs (#3457 enrichment, #3456 orb relay, #3455/#3304 queue, #3454 review-eligibility, #3452 focus-manifest tests, #3451 engine, #3443 selfhost, #3433 integrations, #3414 review-evasion, #3314 miner, #3305 enrichment-wire). Merges cleanly after any of those land without rebase.

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[superagent-security]

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

[gittensory-orb]

Caution

🟥🟥🟥🟥🟥🟥🟥🟥🟥🟥🟥🟥

🛑 Gittensory review result - reject/close recommended

_{Review updated: 2026-07-05 07:52:47 UTC}

2 files · 1 AI reviewer · 2 blockers · readiness 80/100 · CI green · clean

🛑 Suggested Action - Reject/Close

• No linked issue detected — If this PR is intended to solve an issue, link it explicitly in the PR body.
• Maintainer requires a linked issue — Link the relevant issue (for example Closes #123) before opening the PR.

Review summary
The change correctly extends the generated-file source-map matcher so `*.html.map` follows the same path as existing front-end source-map siblings, and the unit test drives the production `isGeneratedFile` path directly. The implementation is narrow, case-insensitive through existing normalization, and does not disturb category precedence in `classifyChangedFile`. I do not see a reachable correctness defect in the visible diff.

Nits — 4 non-blocking

• nit: `src/signals/path-matchers.ts:63` still describes this regex as "every first-class JS/TS bundle extension" even though it already includes CSS/framework extensions and now HTML, so the comment should be broadened to match the actual matcher.
• Update `src/signals/path-matchers.ts:63` to say this covers first-class front-end bundle/source-map extensions, not only JS/TS.
• If this PR is from an external contributor, link the maintainer-authorized issue explicitly instead of saying "No linked issue needed" in the PR description.
• Code changes lack test evidence — Add focused regression tests or explain why existing coverage is sufficient.

Why this is blocked

• No linked issue detected — If this PR is intended to solve an issue, link it explicitly in the PR body.
• Maintainer requires a linked issue — Link the relevant issue (for example Closes #123) before opening the PR.

Signal	Result	Evidence
Code review	❌ 2 blockers	1 reviewer
Linked issue	✅ No-issue rationale	PR body explains why no issue is linked.
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: 58 registered-repo PR(s), 31 merged, 0 issue(s).
Contributor context	✅ Confirmed Gittensor contributor	jimcody1995; Gittensor profile; 58 PR(s), 0 issue(s).
Gate result	❌ Blocking	Repo-configured hard blocker found.

Review context

• Author: jimcody1995
• 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: 58 PR(s), 0 issue(s).
• PR-specific overlap: none found.

Contributor next steps

• 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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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.99%. Comparing base (1dcc412) to head (2d7f6f5).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3458   +/-   ##
=======================================
  Coverage   92.99%   92.99%           
=======================================
  Files         296      296           
  Lines       30972    30972           
  Branches    11294    11294           
=======================================
  Hits        28803    28803           
  Misses       1514     1514           
  Partials      655      655           

Files with missing lines	Coverage Δ
src/signals/path-matchers.ts	88.46% <ø> (ø)

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[gittensory-orb]

Gittensory is closing this pull request on the maintainer's behalf (No linked issue detected; Maintainer requires a linked issue). 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.