- Fixed cold revival flow so parked subagents are restored from persisted sessions at startup.
- Fixed session-init persistence to include spawns and readSummarize fields for replay accuracy.
- Fixed latest-session lookup by adding peekSessionInit for lock-free persisted contract access.
- Added lifecycle and session tests for cold-revive success, decline, and retry paths.
Introduces AgentLifecycleManager: when the task executor adopts a finished subagent the manager arms a TTL timer on idle, parks the agent on expiry (disposes the live session, keeps the AgentRef + sessionFile), and revives it on demand via an injected reviver. Only this manager flips parked ↔ idle. AgentRegistry now annotates session: AgentRef["session"] as null exactly when parked/aborted, and sdk.ts wires the lifecycle dispose into main-session teardown, derives agentKind once, and gates ref unregistration on parking so a parked agent stays addressable (history://, revive).
can1357