Creates docs/watchdog-chain.md explaining the Daemon/Boot/Deacon architecture: - Why two agents (Boot is ephemeral triage, Deacon is persistent patrol) - Session ownership (gt-deacon-boot vs gt-deacon) - Heartbeat mechanics and freshness thresholds - Boot decision matrix (start/wake/nudge/nothing) - Design decision: keep separation, fix implementation bugs Cross-references added to operational-state.md and understanding-gas-town.md. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>