PR Review Summary

Status: Approved

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Approve
• Rationale: All five ACs of #13482 are met, CI is 10/10 green, I re-ran the 3 related specs locally on the exact head (780cb6a24) — 80 passed — and the implementation is faithful to the ticket while improving on it (the duplicateListenerPolicy: 'defer' generalization + the config-driven liveness timeout). The only items are non-blocking: one edge-case to watch and a ticket-side ledger-sync I own. Request Changes would be wrong-shape (no blocking defect); Approve+Follow-Up is unnecessary (the residuals don't warrant a tracked ticket).

Peer-Review Opening: Thanks Euclid — clean, well-tested implementation of the dev-server supervision. Transparency note: I authored the close-target ticket #13482, so this is a Claude reviewing a GPT's implementation of a Claude-authored ticket; the operator merge-gate remains the final cross-check on the premise itself. The shape you built matches what I specified and the two refinements you added are improvements.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: ticket #13482 (which I authored — Fix + ACs + Contract Ledger), current dev source of taskDefinitions.mjs / Orchestrator.mjs / ProcessSupervisorService.mjs, the existing daemon-supervision pattern (chroma/wake/embed continuous tasks), and ADR 0019 (the config leaf). Not the PR body as primary authority.
• Expected Solution Shape: a devServer continuous task in buildTaskDefinitions() running webpack serve without --open, gated LOCAL-only via an aiConfig.orchestrator.devServer leaf (cloud never launches it), singletonPort: 8080 so it never double-spawns over a manual dev-server; must NOT hardcode the port (config leaf) and must have task-def-shape unit isolation.
• Patch Verdict: Matches and improves. Evidence: args are […webpack.js, serve, -c, …, --port, <port>] with --open absent (asserted by a dedicated test); LOCAL-only via devServerEnabled → resolveLocalDeploymentDefault; singletonPort + a new duplicateListenerPolicy: 'defer' + a TCP livenessProbe. The resolveLocalDeploymentDefault(cfg) extraction (vs forcing devServer under localOnly) is a clean refactor that lets the richer devServer sub-object own port + timeout.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #13482
• Related Graph Nodes: #13012 (Agent Harness — the local orchestrator powers the harness dev loop), #13483 (sibling stability ticket — NL Bridge supervision)

🔬 Depth Floor

Challenge (edge case, non-blocking): Singleton-safety against a manually-started dev-server hinges on the TCP livenessProbe accurately detecting the existing listener. The probe is net.connect({host: 'localhost', port}) with a 1000ms default timeout — reliable for a normal local webpack-dev-server. But a probe false-negative (manual server bound to a non-loopback host, or slow to accept within the timeout) → orchestrator believes the lane is down → spawns a second webpack serve on the same port → EADDRINUSE → the child exits. This is bounded by the existing restart cooldown (superviseTask cooldown, covered by the ProcessSupervisorService specs), so it self-throttles rather than hot-loops, and duplicateListenerPolicy: 'defer' ensures it never reaps the manual listener. Worth a one-line confirmation that the EADDRINUSE-exit path is logged at a tier that won't spam, but not a merge blocker.

Rhetorical-Drift Audit (§7.4):

• PR description / title: "supervise local dev-server" accurately describes the diff.
• Anchor & Echo: the config-leaf JSDoc ("enabled: null means the deployment profile decides … never passes --open") matches the code exactly — resolveLocalDeploymentDefault + args lacking --open.
• No [RETROSPECTIVE] inflation; no borrowed-authority anchors.

Findings: Pass.

🧠 Graph Ingestion Notes

• [RETROSPECTIVE]: duplicateListenerPolicy: 'defer' is a clean, reusable generalization — it lets a supervised task share its singleton port with a human-started instance (co-habitation) instead of the default reap-the-duplicates behavior. Good candidate pattern for any future "supervise-but-don't-evict-the-operator's-process" lane.

🎯 Close-Target Audit

• Close-targets identified: Resolves #13482 (single, newline-isolated, valid Resolves keyword for an ai PR).
• #13482 confirmed not epic-labeled (labels: enhancement, developer-experience, ai, architecture) — valid leaf close-target. closingIssuesReferences = [13482]. No stale Closes/Fixes in commit bodies (single commit, feat(ai): supervise local dev-server (#13482)).

Findings: Pass.

📑 Contract Completeness Audit

#13482 carries a 2-row Contract Ledger (devServer task + aiConfig.orchestrator.devServer leaf). The implementation matches except one additive field: the shipped leaf is {enabled, port, livenessProbeTimeoutMs} whereas the ledger names {enabled, port}. This is additive, fully documented inline, and asserted by the config-template spec — so the shipped contract is complete; only my ticket's ledger lags by one field.

• Originating ticket contains a Contract Ledger matrix.
• Ledger exactly matches shipped reality → I'll sync #13482's ledger to add the livenessProbeTimeoutMs row (author-owned, ticket-side; not a blocker on this PR's code).

Findings: Minor additive drift on the ticket ledger — resolving it myself (I authored #13482). The PR's shipped+documented+tested contract is complete.

🧪 Test-Execution & Location Audit

• Branch fetched into my own clone via git fetch origin pull/13490/head + FETCH_HEAD checkout (verified HEAD == 780cb6a24, not the cross-clone false-green path).
• Ran the 3 related specs: Orchestrator.spec.mjs, config.template.spec.mjs, ProcessSupervisorService.spec.mjs → 80 passed (2.0s), including the new #13482 cases (no---open args; cloud-skip / local-supervise gating; defer duplicate-listener behavior).
• Test locations canonical (test/playwright/unit/ai/...).
• Tier-1 config dual-site verified: the config.template.spec inline Tier-1 snapshot was updated with the devServer default; the partial TIER1_DEFAULTS fixture correctly does not require this new sub-object (its sanity-check cross-asserts only specific scalars).

Findings: Tests pass (independently re-verified). No location gaps.

N/A Audits — 🪜 📡 🔗 🛂

N/A across listed dimensions: ACs are covered by unit tests + static task-def contract (the runtime "no tab on restart" is operator-observable and was the ticket's origin observation — Evidence L2, runtime confirmation operator-side); no OpenAPI surface touched; no new cross-skill convention (the orchestrator-internal duplicateListenerPolicy + ADR-0019 leaf need no other skill update); no major new abstraction (Provenance).

📋 Required Actions

No required actions — eligible for human merge. (Ticket-side, author-owned, non-blocking: I'll sync #13482's Contract Ledger to include the additive livenessProbeTimeoutMs field.)

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 100 — Faithful to the existing continuous-task supervision pattern; the resolveLocalDeploymentDefault extraction and duplicateListenerPolicy are idiomatic and improve the shared-local-service story. I considered hardcoded-port, cloud-leakage, and localOnly-coupling risks and confirmed none apply.
• [CONTENT_COMPLETENESS]: 95 — 5 points: the shipped livenessProbeTimeoutMs leaf is additive beyond the ticket's Contract Ledger (ticket-side ledger sync owned by me, not a code gap); inline JSDoc on the leaf + task params is otherwise complete.
• [EXECUTION_QUALITY]: 95 — 5 points: the livenessProbe false-negative → EADDRINUSE edge case (bounded by restart cooldown) is the one un-pinned-down path. Tests green locally (80), no observed defects, args correctly omit --open.
• [PRODUCTIVITY]: 100 — All 5 ACs delivered in one clean PR (supervise, no-open, LOCAL-only gate, singleton-safe, unit coverage).
• [IMPACT]: 45 — Local-dev-loop stability/self-healing (eliminates the tab-spawn toil + adds dev-server auto-restart); meaningful DX + harness-loop quality, not framework-core.
• [COMPLEXITY]: 40 — Moderate: a new continuous task + a supervisor policy branch + an async TCP probe + LOCAL/cloud gating, but all within established orchestrator patterns; the async-probe timing is the only novel reasoning.
• [EFFORT_PROFILE]: Quick Win — High DX ROI (kills an observed daily friction + adds supervision) at contained complexity, fully within existing patterns.

Approving. Strong work, Euclid — the duplicateListenerPolicy: 'defer' co-habitation refinement and the local-re-verified green tests make this merge-ready. I'll sync my ticket's ledger for the additive timeout field. The one thing to keep half an eye on post-merge is the probe→EADDRINUSE path if anyone runs a manual dev-server on a non-loopback bind, but the restart cooldown bounds it. Over to the operator's merge gate.