PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: Approve — well-shaped, Progressive-Disclosure-correct skill addition that resolves the empirical cross-PR-collision friction with no blocking defects. Not Approve+Follow-Up (the two observations are minor + don't warrant gating tickets). Not Request Changes (no defect blocks correctness — the convention fires via the author-workflow trigger). Not Drop+Supersede (premise current + empirically grounded in #10142 / #10160 / #10163).

Peer-Review Opening: Clean, substrate-correct addition — the rule body is in a conditional references/ payload and the hot workflow map gets only a one-line trigger, exactly the Progressive Disclosure discipline (and it dodges the pr-review §7.7 "substantive rule in always-loaded substrate" anti-pattern). Cross-family note (Claude reviewing GPT): this is my workflow domain, so a thorough structural + cross-skill-integration pass below.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: Ticket #10164 (the empirical collision history #10142 / #10160 / #10163, the asymmetric-audit-coverage framing, the proposed author-side home), the 2 changed-file paths, current dev pull-request-workflow.md §1 Stepping Back (the insertion site), the Progressive Disclosure discipline (pull-request-workflow.md §1.1 + pr-review-guide §7.7 always-loaded-substrate anti-pattern row), and the sibling surfaces the payload cross-references (peer-role lane-claim, pr-review §8).
• Expected Solution Shape: An author-side cross-PR overlap check whose RULE BODY lives in a conditional references/ payload (NOT the always-loaded map), with only a trigger pointer in pull-request-workflow.md §1 — listing the branch write-surface, open-PR write-surfaces (gh pr list), an exact-path collision compare, and a "Known Collisions" PR-body convention. Must NOT dump substantive rules into the hot map (the §1.1 / §7.7 anti-pattern), and must NOT overclaim (it's best-effort file-overlap, not a semantic / merge oracle).
• Patch Verdict: Matches (improves). The 72-line cross-pr-overlap-check.md holds the full mechanics; pull-request-workflow.md gets exactly one HTML-comment trigger in §1 Stepping Back. Confirmed by reading both files: no rule body leaks into the map; the payload's Boundaries section self-scopes ("not a semantic detector / not a CI hook / not a general merge oracle"), pre-empting overclaim.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #10164
• Related Graph Nodes: .agents/skills/pull-request/references/cross-pr-overlap-check.md, .agents/skills/pull-request/references/pull-request-workflow.md, pr-review-guide.md §8 (reviewer-side analog), peer-role lane-claim collision check

🔬 Depth Floor

Challenge: The collision detection relies on gh pr list --state open --json number,title,files. GitHub's API caps the files returned per PR (≈100/PR via this path), so a collision in a file beyond that cap on a large open PR would be silently missed. For the skill/workflow-doc PRs this check targets (typically a handful of files) it rarely bites, and the payload's Boundaries already disclaim "not a general merge-conflict oracle" — so non-blocking, but a one-line ## Boundaries note ("best-effort: gh pr list --json files truncates very large PRs' file lists") would make the limit explicit for a future reader who points this at a big PR.

I also actively looked for, and found no concerns with: (1) Progressive-Disclosure violation — none, rule body is in references/, map gets only a trigger; (2) rhetorical drift — none, prose matches the diff; (3) self-overclaim — none, the Boundaries section scopes it to file-overlap (not semantic / merge).

Rhetorical-Drift Audit: PR prose ("without growing the hot workflow map") + the payload's self-framing ("author-side", "complements peer-role + pr-review") match the diff exactly. Findings: Pass.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: The author-side / reviewer-side audit symmetry is the right mental model — pr-review §8 catches collisions reviewer-side (post-PR-open, after CI + review are spent); this moves the cheap gh pr list file-overlap scan UPSTREAM of commit, where avoiding the rebase is nearly free. Putting it in references/ behind a map-trigger is the model Progressive-Disclosure shape other skill-rule additions should copy.

N/A Audits — 📡 📑 🛂

N/A: no OpenAPI tool descriptions touched (📡); no public/consumed runtime or MCP/config contract (📑 — the "contract" is a workflow convention; the author backfilled a Contract Ledger on #10164); not a major architectural abstraction needing a Provenance trace (🛂 — procedural author-side convention, empirically grounded in #10142 / #10160 / #10163).

🎯 Close-Target Audit

• Close-targets identified: #10164
• #10164 confirmed not epic-labeled (labels: documentation, enhancement, ai, architecture)

Findings: Pass — single newline-isolated Resolves #10164, valid leaf close-target.

🔗 Cross-Skill Integration Audit

This PR introduces a new author-side workflow convention → §8 applies.

• The new payload forward-references its predecessor/sibling surfaces (peer-role lane-claim, pr-review §8 Cross-Skill Integration Audit).
• The trigger fires from the author workflow (pull-request-workflow.md §1), so the convention WILL activate during /pull-request.
• New references/ payload registered in the skill manifest (ai:lint-skill-manifest passed per Test Evidence).
• Non-blocking gap (out of #10164 scope): the reverse link is absent — pr-review §8 (reviewer-side) doesn't yet verify the author ran this check / added a ## Known Collisions section. Closing that loop would complete the audit symmetry the ticket describes, but it's a follow-up beyond this ticket's "add the author-side check" scope.

Findings: Pass for #10164's scope; one optional reviewer-side back-reference follow-up noted, non-blocking.

🧪 Test-Execution & Location Audit

• Docs/skill change (2 .md files under .agents/skills/pull-request/references/) → no code-test execution required per §7.5.
• The relevant skill-substrate verification ran: ai:lint-skill-manifest passed (new payload registered), git diff --check + the whitespace hook passed.
• §7.6 CI: lint / lint-pr-body / Analyze / CodeQL green; unit + integration-unified were PENDING at review-time but are code-tests orthogonal to a 2-markdown-file skill change (§7.5), so they don't gate this docs review.

Findings: Pass — appropriate L1 skill-substrate evidence; no code-test surface.

📋 Required Actions

No required actions — eligible for human merge.

(Two non-blocking, optional follow-ups noted above, both out of #10164's scope: a one-line ## Boundaries note on gh pr list --json files truncation for very large PRs; and a future reviewer-side back-reference in pr-review §8 to verify author-side compliance and complete the audit symmetry.)

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 — I actively checked for a Progressive-Disclosure violation (rule-in-hot-map), a missing manifest registration, and map-bloat, and confirmed none apply: rule body in references/, map gets one trigger line, manifest lint green. Textbook Map→Atlas shape.
• [CONTENT_COMPLETENESS]: 95 — 5 deducted: the payload is thorough (Trigger / Required-Check / PR-Body-Contract / Anti-Pattern / Boundaries) but the gh pr list --json files truncation limit isn't disclosed in Boundaries (the one edge a future reader hits).
• [EXECUTION_QUALITY]: 95 — 5 deducted for the same unhandled-but-disclosed-only-implicitly large-PR file-list truncation edge. No other defects; docs change so no code-execution surface.
• [PRODUCTIVITY]: 100 — Delivers #10164's "add author-side cross-PR collision check" exactly, in the ticket's proposed home (§1 Stepping Back), with the Known-Collisions PR-body convention. I confirmed the AC maps to the diff; nothing deferred.
• [IMPACT]: 60 — Substantive workflow-process improvement: moves collision detection upstream of commit across the parallel cross-model swarm, saving review-time rebase cycles; not framework-runtime architecture.
• [COMPLEXITY]: 20 — Low: 2 markdown files, one new conditional payload + a one-line map trigger; no code paths, no runtime surface.
• [EFFORT_PROFILE]: Quick Win — High process-ROI (avoids recurring review-time rebase churn) at low complexity (docs-only, Progressive-Disclosure-correct).

Clean and merge-ready. Model Progressive-Disclosure shape — rule in references/, trigger in the map. The only things I'd watch are the two non-blocking follow-ups above (large-PR gh pr list truncation + the reviewer-side back-reference to complete the audit symmetry), neither of which gates this merge.