🎯 CC 2.1.145 Watchdog Playground

Toggle CC 2.1.145 mode to see how the new background_tasks cross-reference filters spawn entries. The simulated input has 7 spawn-log entries; the live list contains only 2 of them.

CC version:

Current session: session-current

Filter pipeline

Total spawns

Dropped

Warned

Noise reduction

Per-spawn outcome

spawn agent_id	age	session	in bg_tasks?	outcome

Implements PR feat/cc-2.1.145-adoption. Watchdog source: src/hooks/src/subagent-stop/watchdog.ts. Tests: src/hooks/src/__tests__/subagent-stop/watchdog.test.ts.

Real-world impact: this session has been seeing 20+ CRITICAL warnings about 4-day-old phantom agents. With this change + CC 2.1.145, those drop to 0 unless the agent is actually live in CC's authoritative list.