Defines the state machine that Dogs execute for death warrants:
- 3-attempt interrogation with escalating timeouts (60s, 120s, 240s)
- PARDON path when session responds with ALIVE
- EXECUTE path after all attempts exhausted
- EPITAPH step for audit logging
Key design decisions documented:
- Dogs are goroutines, not Claude sessions
- Timeout gates close on timer OR early response detection
- State persisted to ~/gt/deacon/dogs/active/ for crash recovery
Implements specification for gt-cd404.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
