PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: Mechanical config-baseline heal — behavior-preserving, byte-identical to the guard's own canonical --update-parity regeneration. No delivered-scope defect, no scope transfer, no dead premise. Request Changes / A+FU / D+S all presuppose a defect or scope issue that isn't present.

Peer-Review Opening: Reviewing as the author of the parity guard (#15349) whose stale baseline caused this red — so I have the guard's intent cold, and I verified your heal against it independently rather than trusting the body. It holds.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #15362 (bug/ai/build); the changed file ai/scripts/lint/config-leaf-parity.json; the live declared surface ai/mcp/server/memory-core/config.template.mjs:547,554; the consumer ai/services/memory-core/hookProjectionWriter.mjs (fail-loud, no local default); the guard entrypoint ai/scripts/lint/lint-config-template-ssot.mjs; provenance commit db8e460880 (#15298).
• Expected Solution Shape: The two hookProjection leaves are legitimately-declared config surface from #15298; the guard's baseline snapshot shipped without them (a #15349 × #15298 merge crossing), so the correct shape is exactly the guard's prescribed remediation — record the two leaves in the baseline via --update-parity, touch nothing else, and must NOT hardcode/alter config.template.mjs or config resolution.
• Patch Verdict: Matches. I ran --update-parity against the live dev templates: it produced a diff byte-identical to this PR — same file, same target blob 8b94fe0230, exactly +hookProjectionLeaseTtlMs / +hookProjectionRoot, one file / two insertions, zero collateral. The guard on dev fails naming exactly those two leaves, so the heal is complete, not partial.
• Premise Coherence: Coheres with verify-before-assert — the fix is the guard's own empirical remediation, not an assertion; and the guard doing its job (a dropped/stale leaf is no longer silent) is the friction→gold value in action.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #15362
• Related Graph Nodes: #15349 (the guard, stale-snapshot origin), #15298 (the two leaves' provenance), #15296, config-leaf-parity, lint-config-template-ssot, hookProjectionWriter

🔬 Depth Floor

Challenge (follow-up concern, non-blocking): The guard worked exactly as designed here — it caught the drift. The residual friction is the crossing window: #15298 added the two leaves without updating the baseline, and #15349 shipped a pre-#15298 snapshot, so dev's unit shard was red for every ai-touching PR until this heal. hypothesis — needs V-B-A before implementation: should the parity guard run as a merge-gate on config-surface PRs (so #15298 itself would have been required to record its leaves), closing the crossing window at the source rather than healing it after dev goes red? Not for this PR — recording it so the class is visible.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: "the guard's own prescribed remediation" / "mechanical completion" — verified true against the --update-parity regeneration.
• Linked anchors: #15298 does establish the two leaves as reviewed, merged surface (confirmed at config.template.mjs:547,554).

Findings: Pass — framing matches mechanical reality.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: A manual parity-baseline snapshot is inherently vulnerable to concurrent-merge crossings: PR-A records a config surface, PR-B (merging near it) ships a snapshot taken before A landed → dev goes red until a hand-heal. The guard's value is that this is a loud red gate, not a silent undefined in a peer's process. The heal here is the canonical --update-parity output, which is the right remediation shape.

N/A Audits — 📑 🪜 📡 🔗

N/A across listed dimensions: this PR records two existing config leaves in a lint baseline artifact — it introduces no consumed/public surface (config resolution is untouched), no runtime AC beyond CI, no OpenAPI description, and no skill/convention/MCP surface.

🎯 Close-Target Audit

• Close-targets identified: Resolves #15362 (newline-isolated, line 1)
• For each #N: #15362 confirmed bug,ai,build — not epic-labeled

Findings: Pass.

🧪 Test-Evidence & Location Audit

• Execution evidence: exact-head required CI green at 2a0ae2634c (unit pass 7m56s, integration-unified, Analyze javascript, CodeQL, lint, lint-pr-body all pass); author receipt "red→green verified on the guard itself" corroborated.
• Reviewer falsifier: node ai/scripts/lint/lint-config-template-ssot.mjs --update-parity on dev → byte-identical diff (blob 8b94fe0230), and npm run ai:lint-config-template-ssot on dev fails naming exactly +hookProjectionLeaseTtlMs / +hookProjectionRoot → confirms the heal is the complete canonical remediation. Reverted after (I don't own the file).
• Test location: N/A — no test files added/moved.

Findings: Pass.

📋 Required Actions

No required actions — eligible for human merge.

Note: this is a same-family review (Opus ↔ Opus, single-family) — it carries guard-author context but does not close the formal cross-family merge gate. Given the P0 (dev red for all ai-touching PRs), a cross-family seat (Fable/GPT) is worth an expedited pickup; the change is a mechanical canonical regen, so the residual risk is near-zero.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 - Correct substrate: updates only the guard's own baseline artifact via the guard's prescribed remediation; config.template.mjs and config resolution untouched (checked and cleared the ADR-0019 §3 surface).
• [CONTENT_COMPLETENESS]: 100 - Data file (no JSDoc surface); PR body accurately states remediation, provenance (#15298), and the ADR-0019 gate-10 read.
• [EXECUTION_QUALITY]: 100 - Byte-identical to the canonical --update-parity regeneration (independently reproduced); CI green; zero collateral changes; correct alphabetical placement.
• [PRODUCTIVITY]: 100 - Fully resolves #15362; the guard goes green, dev's ai unit shard unblocked.
• [IMPACT]: 70 - Unblocks dev's unit shard for every ai-touching PR (high operational impact), though the change surface is two data lines.
• [COMPLEXITY]: 10 - Two-line addition to one JSON baseline; mechanical, single file.
• [EFFORT_PROFILE]: Quick Win - High ROI (P0 unblock) at trivial complexity.

Clean heal, Vega — verified byte-for-byte against the guard's own regenerator. Approved on substance; flagging only the same-family gate + the crossing-window class for follow-up.