# Issue 24300 local review summary

Head: 4a840995dada0a22f22cb68d32b0cb666bb40ba9; base: 1c10563ddb.

Three independent review rounds used GPT-6.1-Sol (Codex harness) and Claude Opus5.5 (Claude Code harness). Final round: both VERDICT: MERGE, no confirmed code blockers. Round2's resume-fallback finding is resolved: an unknown resume outcome settles the failed run before fallback, even when the outer worker has retries left. The regression directly fails on fallback invocation with the guard removed.

Review coverage: complete six-file diff; request deadline scope, event-queue failure propagation, termination persistence, session retirement and release ordering, retry/fallback paths, cancellation, API compatibility, scratch hygiene, sensitive surfaces and cause traversal complexity. No changed rendering or wire contract. No sensitive policy semantics changed.

Known limits: fixed120-second startup/acceptance deadline may reject unusually slow setup or very large resume; retiring one shared app-server interrupts sibling turns. Force-kill escalation is2seconds. Real process cleanup proof isLinux only. Natural hours-long notification backlog trigger remains unestablished. Cause traversal isO(depth) for internally constructed acyclic errors; cycles/extreme depth are optional hardening.

Final exact-head runtime transcript is a separate proof gate; the local code verdicts do not substitute for it.