Token Scraping
Regex parse of stdout for usage
Zombie Detection
Daemon pid file but no process
Stall Detection
No output for long running task
Quota Exhausted
Budget or rate limit breach
Success Loop
Same output repeated
Burn Rate
Cost velocity too high
Context Bloat
Context.md size warning
Pre-Exec Gate
CRITICAL sentinel blocks run
Flatline
3× identical non-zero exits