One full health-check round:

1. L1 system: CPU/GPU temperature / thermal / load / memory
2. Scan the macOS unresponsive state for third-party GUI apps
3. Confirm and shut down long-idle Simulator devices
4. User idle > 30min? -> skip the CleanClip probe
5. L2 CleanClip process liveness (relaunch silently if dead)
6. L3 CleanClip functional probe, state machine, silent auto-restart, notify only when blocked.