fix(enrichment): sanitize brief code spans

[JSONbored]

Motivation

• Close a Markdown/prompt-injection vector where unescaped PR file paths could break out of code spans in the EXTERNAL REVIEW BRIEF and inject arbitrary trusted content.

Description

• Add a safeCodeSpan helper that replaces backticks and control characters before embedding values inside Markdown code spans and a small replacement map; implemented in review-enrichment/src/render.ts.
• Use safeCodeSpan when rendering secret findings and unpinned-action findings so attacker-controlled file / action@ref strings cannot terminate code spans or introduce newlines/headers.
• Add a regression test that constructs a malicious-looking file path (containing a backtick and newlines) and asserts the brief does not contain the forged heading while still citing the sanitized path.

Testing

• Ran the enrichment package unit suite with cd review-enrichment && npm test; all tests passed (24 tests, 0 failures).
• Ran git diff --check to ensure no whitespace/conflict markers (no issues reported).
• Attempted npm audit --audit-level=moderate, but the registry returned 403 Forbidden so the audit step could not complete in this environment.

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Codex Task

[superagent-security]

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

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	gittensory-ui	12d00c5	Commit Preview URL Branch Preview URL	Jun 26 2026, 09:12 PM

[gittensory-orb]

Tip

🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩🟩

✅ Gittensory review — safe to merge

2 files · 1 AI reviewers · no blockers · readiness 48/100 · CI green · blocked

✅ Approved — safe to merge

Signal	Result	Evidence
Code review	✅ No blockers	1 reviewers, synthesized
Linked issue	⚠️ Missing	No linked issue or no-issue rationale found.
Related work	⚠️ 3 scoped overlaps	Top overlaps are listed below; lower-confidence bulk is hidden.
Review load	❌ 8/20	Readiness component derived from cached public PR metadata and labels; size label size:S.
Validation evidence	❌ 5/25	Cached preflight status is hold.
Open PR queue	❌ 3/10	48 open PR(s), 9 likely reviewable, 39 unlinked.
Contributor context	✅ Confirmed Gittensor contributor	JSONbored; Gittensor profile; 81 PR(s), 261 issue(s).
Gate result	✅ Passing	No configured blocker found.

Nits — 2 non-blocking

• Repository config was not parsed
• No linked issue detected — If this PR is intended to solve an issue, link it explicitly in the PR body.

Review context

• Author: JSONbored
• Role context: owner (maintainer lane)
• 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: 81 PR(s), 261 issue(s).
• Related work: Titles/paths share 6 meaningful terms. (PR #1537)
• Related work: Titles/paths share 6 meaningful terms. (PR #1542)
• Related work: Titles/paths share 6 meaningful terms. (PR #1545)
• Additional title-only matches omitted; title-only overlap does not block.

Contributor next steps

• Treat this as maintainer-lane context rather than normal contributor-lane activity.
• Explain no-issue PR.
• Review top overlaps.
• Add scope summary.
• Fix blocker.
• Expect slower review.
• 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.
• Review load = cached public PR metadata such as size labels, changed paths, and preflight status.
• Open PR queue = repo-wide review pressure; it is not a PR 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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Checked by Gittensory, a quiet PR intelligence layer for OSS maintainers.

• Re-run Gittensory review