fix(lab): combine host-redaction hardening for socket markers and connect-to failures

[luvs01]

Summary

Combined host-redaction hardening for lab evidence sanitization, merging three overlapping fork PRs that all touch src/lab/artifacts/sanitize.ts:

• Bare hosts after socket errors: resolver/socket markers (ENOTFOUND, ECONNREFUSED, ETIMEDOUT, EHOSTUNREACH, dial tcp, lookup, host) license a bare destination name only where grammar proves the position — the marker's sole argument or the argument of lookup. Connective prose after a marker (ETIMEDOUT while waiting for response) survives.
• Bare connect-to failure destinations: connect to gateway failed / connecting to redis timed out redact the bare target when a failure term follows; connect to your account stays prose. Also fixes a shared defect: rewrites now splice at the tail offset, so a marker word that repeats the destination (connect to connect failed, host host) no longer takes the [host] itself.
• Digit-suffixed upstream hosts: DOTTED_NAMESPACE_RE narrowed so only plain alphabetic runs and the conventional *.metric.p<digits> shape count as namespaces — upstream db.prod1 is now redacted while upstream provider.metric.p95 survives.

Tests

• bun test tests/lab/lab-evidence-sanitization.test.ts — 31 pass

Summary by CodeRabbit

• Bug Fixes

  • Improved diagnostic sanitization for hostnames and network destinations in connection errors.
  • Redacts destinations more reliably across socket errors, lookup failures, ports, and connect to failure messages.
  • Prevents repeated marker words from interfering with destination redaction.
  • Preserves surrounding explanatory text and recognized namespace patterns when they are not destinations.

• Documentation

  • Updated sanitization guidance and known limitations to reflect refined detection and redaction behavior.

[github-actions]

⚠️ Deterministic hygiene checks failed.

• missing_coauthor_credit — This pull request says it reimplements, supersedes, carries, or rebases another author's pull request, but no Co-authored-by trailer names that author. Prose in a commit body is not read by anything; the trailer is what GitHub counts. Add it to the description or a commit, or obtain attribution-approved. Paths: #248, #249.

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📝 Walkthrough

Walkthrough

The sanitizer now narrows namespace exemptions, recognizes socket-marker contexts, and redacts destinations using token offsets. Documentation and tests cover bare destinations, connective prose, failure terms, digit-suffixed labels, and repeated marker words.

Changes

Host redaction behavior

Layer / File(s)	Summary
Contextual host detection and redaction src/lab/artifacts/sanitize.ts	Namespace exemptions now distinguish alphabetic dotted namespaces and *.metric.p<digits> forms. Socket markers license bare destinations only in defined argument positions. connect to <target> is redacted when followed by a network failure term. Token-offset replacement handles repeated marker words.
Documented behavior and regression coverage structure/adapters/compatibility-lab.md, tests/lab/lab-evidence-sanitization.test.ts	Documentation records the updated confidence rules and known limits. Tests cover socket markers, weak markers, connective prose, failure terms, digit-suffixed labels, and repeated marker words.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

🚥 Pre-merge checks | ✅ 4 | ❌ 1

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Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

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Title check	✅ Passed	The title accurately summarizes the main changes: stronger host-redaction handling for socket markers and failure-specific connect to phrases.

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[github-actions]

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Inline comments:
In `@src/lab/artifacts/sanitize.ts`:
- Around line 544-550: Update the fallback token scan around isHostCandidate to
retain each token’s raw text and position, strip trailing periods for host
classification, and skip tokens that become empty. Redact only the classified
host portion while preserving terminal sentence punctuation, and add a
regression assertion covering sanitizeDiagnostic("ECONNREFUSED redis.").

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[lidge-jun]

리뷰 · 우선순위 62 / 80

랩 증거 로그에 남는 호스트 이름을 더 잘 가리는 고침이에요. src/lab/artifacts/sanitize.ts 한곳을 손봐요. 소켓·해석 오류(ECONNREFUSED, ETIMEDOUT 같은 것) 뒤에 오는 짧은 목적지 이름을 [host]로 바꿉니다. connect to gateway failed처럼 실패 말이 바로 따라올 때도 목적지를 가립니다. connect to your account 같은 일반 문장은 그대로 둡니다. upstream db.prod1은 가리고, upstream provider.metric.p95는 남깁니다. 마커 단어가 목적지와 같을 때(connect to connect failed, host host) 앞쪽 마커를 [host]로 잘못 바꾸던 버그도 고칩니다. base는 이미 dev예요. 작성자가 합쳤다고 한 포크 PR(luvs01 #248, #249, #253)은 이미 닫혀 있어요. 로컬 테스트는 31개 통과했다고 적혀 있고, 새 단언도 방향을 잘 잡아요. 다만 지금은 draft이고, hygiene·enforce-target이 missing_coauthor_credit로 막혀 있어요.

src/lab/artifacts/sanitize.ts fallback 토큰 스캔 (isHostCandidate 호출부) - 문장 끝 마침표가 붙은 ECONNREFUSED redis.는 토큰이 redis.로 잡혀요. 점 때문에 “호스트 모양” 검사가 실패해서 맨이름이 그대로 남아요. CodeRabbit이 잡은 구멍이고, 증거 파일에 목적지가 샐 수 있어요. 분류 전에 끝 마침표만 떼고, 가릴 때는 이름만 [host]로 바꾸며 마침표는 남겨야 해요. sanitizeDiagnostic("ECONNREFUSED redis.") → ECONNREFUSED [host]. 단언을 추가하세요.

PR 본문의 #248, #249, #253 - 이 숫자는 lidge-jun/opencodex 이슈로 읽혀요. 여기 #248·#249는 다른 사람 PR이고 #253은 없어요. 게이트가 그 작성자 Co-authored-by를 요구하며 실패해요. 작성자 의도는 자기 포크 PR인데, 숫자만 쓰면 이 레포와 섞입니다. 포크 전체 URL로 바꾸거나, 이 레포 번호가 맞다면 해당 작성자 trailer를 넣으세요.

메인테이너의 판단이 필요한 지점

끝 마침표 누락을 이번 PR에서 반드시 막을지, known limits 표에만 적을지는 정해 주세요. 랩 증거 살균이 목표면 막는 쪽이 맞아요. 본문 번호 표기도 포크 URL로 고칠지, attribution-approved로 게이트만 열지는 메인테이너 쪽 결정이에요. 같은 주제의 다른 열린 중복 PR은 안 보여요.

너의 추천

마침표 누락부터 고치고 회귀 테스트를 넣으세요. 본문에서는 #248 같은 짧은 번호 대신 luvs01/opencodex#248 전체 링크를 쓰세요. 게이트가 초록이 되고 마침표 구멍이 닫히기 전에는 draft를 유지하세요. 포크 세 개는 이미 닫혀 있으니 추가로 닫을 건 없어요.

이 댓글은 grok-bot이 작성했습니다

[luvs01]

Applied on a74038c:

• Trailing-period leak fixed: the token is classified without its sentence-final period and the period stays outside the mask — sanitizeDiagnostic("ECONNREFUSED redis.") now returns ECONNREFUSED [host]., and dial tcp db.prod1. redacts the same way. Regression assertions added to lab-evidence-sanitization.test.ts (31 tests pass on this head).
• Provenance clarification: the combined contribution is recorded by upstream commits 69990d99d341457a2fe3f3276b9a89814046c57a and a74038cb9e3e8ff2eaee87b49acd6a2466b839c2, with original attribution preserved. The earlier repository-qualified private references in this reply are superseded by these public commit identifiers. The stale creation-denied paragraph was removed from the submission.

[luvs01]

Consolidated into #5538 as a single related-function aggregate.

Source head: 6f927bae572c4e8dc302bd355385038d0a3d3716. Replacement head: 62c677c05d880a5c231bb4efd35b7f8bb637d16f.

Both unique source commits, including the review follow-up, match carried commits by stable Git patch ID. All affected runtime and test files match the source head exactly at the replacement head; merge-only source commits have no additional combined diff. The combined changed-file run passed 85 tests / 376 assertions; typecheck, structure, privacy and standalone size-ratchet checks passed. Full suite, hosted cross-platform CI and independent review remain pending.

Closing this duplicate standalone review entry at the author's request after verifying migration. This is not a merge or release claim; remaining integration checks and reviews are tracked on the draft replacement. Original branches are retained.