SignatureName:
| "deadlock-storm"
| "stuck-saga"
| "integrity-mismatch"
| "engine-stall"
| "treasury-breach"
| "velocity-anomaly"
| "signal-silence"
| "retry-exhaustion"
| "outbox-backlog"
| "webhook-replay-storm"
| "checkpoint-seal-slow"
| "inbox-dead-letter"
The twelve incident signatures the supervisor detects; every audit record names one.