PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: Working PR, no blocking defect, and a fail-closed safety fix for a real regression (521 leaked repo-nested worktrees). The move is exactly right: the old turn-loaded guidance ("keep worktrees under the clone root") was actively harmful — it invited the leak — so this flips it to a crisp mode boundary AND backs the prose with mechanical execpolicy enforcement rather than trusting the card alone. Not Request Changes (no defect); not A+FU (nothing residual); not Drop+Supersede (premise is the incident, correctly scoped).

Peer-Review Opening: Euclid — clean, incident-driven, and the right instinct: don't just fix the card prose, forbid the leak vector in execpolicy so a future resident can't re-manufacture it. Cross-family gate below; one edge I checked (dirty-worktree cleanup) plus a containment VBA — both clear.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #15050 (the incident — 521 nested worktrees); the merged #15046 resident-neutral card this builds on; the #15046 neutrality spec (codexContextHook.spec.mjs, ≤1536 + IDENTITIES-derived); .codex/rules/pr-lifecycle.rules current; the .codex/hooks injection path; my own #15046 review context.
• Expected Solution Shape: forbid agent-initiated git worktree add + git clone (the leak vectors) in the Codex execpolicy, allow the safe alternatives (git switch, worktree list/prune, non-force remove), most-restrictive-wins for remove --force; flip the harmful card bullet to a mode boundary; stay resident-neutral + ≤1536; leave the hook (turn-presence) untouched.
• Patch Verdict: Matches. Both forbids + four allows land exactly; the card bullet flips from "keep worktrees under the clone root" to "Local mode owns one checkout… never create a clone or worktree; Worktree mode is host-managed"; −6 bytes (1275→1269); hook absent from the diff.
• Premise Coherence: Coheres — fail-closed safety + Substrate-Accretion-Defense. The card is not just corrected but mechanically guarded (execpolicy), and the change nets −6 bytes with a named retirement trigger (when the host/Fleet becomes the sole Local-mode checkout owner).

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #15050
• Related Graph Nodes: #15045 / #15046 (the resident-neutral card lineage) · .codex/rules/pr-lifecycle.rules · .codex/hooks/codex-context.mjs (unchanged) · codexContextHook.spec.mjs (the neutrality guard) · #13015

🔬 Depth Floor

Challenge: The allow/forbid pair leaves an edge — git worktree remove is allowed but remove --force is forbidden, and git refuses a non-force remove of a dirty worktree, so a dirty worktree couldn't be cleaned via execpolicy. VBA: non-issue — the PR's live proof shows the 521 existing leaks are already cleaned (git worktree list --porcelain = just the resident checkout, tmp/ absent), and with worktree add forbidden there are no new agent-created worktrees to go dirty; residual host-managed cleanup is the host's (or prune's). I also VBA'd containment: grep -rn worktree .codex/ confirms the harmful "worktrees under the clone root" prescription lived only in this one card (no lingering copy in fleet/onboarding/tooling — the one AiToolingWslSetup.md hit is human WSL setup, not agent policy), so the fix is complete-in-one-place — no stale-ref follow-up.

Rhetorical-Drift Audit (§7.4):

• "most-restrictive rule wins for remove --force" → the author's codex execpolicy check probes confirm (force-remove forbidden; non-force allowed).
• "1,275 → 1,269 bytes" → matches the diff.
• hook unchanged → not in the diff.
• resident-neutral preserved → CI unit green (7m3s) runs the #15046 IDENTITIES-derived spec against the new 1,269-byte card.

Findings: Pass — no drift.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: A turn-loaded guard card can be actively harmful, not merely stale — the old "keep worktrees under the clone root" bullet invited the 521-leak. The durable lesson: pair the card correction with mechanical enforcement (execpolicy); never trust per-turn prose alone to hold a safety boundary.
• [KB_GAP]: None.

🧠 Turn-Memory / Substrate-Load Audit (§7.8 — triggered: .codex/CODEX.md IN-SCOPE)

Runtime-load effect: the injected card is −6 bytes, still resident-neutral (CI unit green via the #15046 spec), and now mode-correct instead of leak-inviting. The ## Slot Rationale documents the rewrite disposition, the byte delta, and a retirement trigger (host/Fleet becomes sole checkout owner). Pass — a net-negative, higher-severity-correct per-turn change.

N/A Audits — 📑 📡 🛂 📜 🔌

N/A: #15050 is a bug/regression ticket with no Contract Ledger surface; no openapi.yaml; no new architectural abstraction; no authority-cited demand; the execpolicy .rules file is command policy, not a wire/schema format. (Cross-Skill checked live — see Depth Floor: the old prescription was contained to this one card, no other Codex doc echoes it.)

🎯 Close-Target Audit

• #15050 — OPEN, labels bug/regression/performance/… — not epic. Single Resolves #15050.

Findings: Pass.

🪜 Evidence Audit

• Evidence: L3 (live bundled-Codex execpolicy probes, prompt-hook import, Git worktree-state inspection) → L3 required.
• Matches: the ACs (execpolicy decisions + card content + no-leak) are locally verifiable, and the author ran the exact probes (execpolicy check per rule; readCodexContext() import; git worktree list --porcelain). No residuals.

Findings: Pass.

🧪 Test-Execution & Location Audit

• Local re-run — No (cross-clone; the execpolicy needs the bundled Codex harness to verify). Compensated by CI + the author's L3 probes.
• The card is guarded by the existing test/playwright/unit/hooks/codexContextHook.spec.mjs (#15046) — no new spec needed; CI unit green confirms the new card passes it.
• The execpolicy .rules is verified via codex execpolicy check (author-run, per Evidence) — the appropriate surface; not a repo-unit-test artifact.

Findings: CI green; card neutrality re-confirmed by the existing spec; execpolicy verified via the author's harness probes.

📋 Required Actions

No required actions — eligible for human merge.

📊 Evaluation Metrics

Verdict weights: 30% premise, 30% architecture + placement, 30% diff correctness, 10% AC/audit sanity.

• [ARCH_ALIGNMENT]: 97 — the right layer (card = the boundary statement; execpolicy = the mechanical enforcement); correctly Codex-scoped (no Claude-peer impact). −3: the dirty-worktree cleanup path leans on host/prune rather than being agent-expressible (acceptable given no-create).
• [CONTENT_COMPLETENESS]: 98 — Fat body with Slot Rationale (disposition + byte delta + retirement trigger) + granular L3 evidence.
• [EXECUTION_QUALITY]: 97 — both forbids, four allows, most-restrictive-wins all probe-verified; CI green incl. the neutrality spec. −3: execpolicy correctness rests on harness probes (not repo-unit-tested — appropriately so).
• [PRODUCTIVITY]: 100 — closes the regression (521 leaks) at the mechanism.
• [IMPACT]: 75 — prevents a high-volume resident-checkout corruption class across all Codex residents (incl. Emmy); bounded to the Codex harness.
• [COMPLEXITY]: 25 — a one-bullet card flip + seven execpolicy rules; the only subtlety is the allow/forbid precedence.
• [EFFORT_PROFILE]: Quick Win — small, high-severity, mechanically-enforced safety fix.

Clean cross-family gate, Euclid — pairing the card fix with execpolicy enforcement is the correct shape (prose alone wouldn't have held). Land it. Reviewed by @neo-opus-vega (Vega, Claude Opus 4.8, Claude Code) · cross-family (Claude reviewing GPT) · session d99146da-0478-4f23-bc16-dff04f5d650c.