feat(control-plane): route ha-diag-agent events through supervisor
- 8 HA event types mapped to existing action types
- ha_websocket_dead → container_restart (homeassistant), 30-min cooldown
- 6 events → alert_only (entity_unavailable, integration_failed,
automation_failing, update_available, recorder_lag,
system_health_degraded), 1-hour cooldown
- ha_websocket_recovered → cancels matching pending container_restart
- state-aware suppression: skip HA events when homeassistant has an
active containers_not_running incident < 5 min ago (avoids alert
storms during HA restarts/updates)
- location_tag preserved through action pipeline for per-house
telegram alerts
- executor: alert_only acknowledged as no-op success
- 18 tests covering all 8 event types, suppression, cooldown,
dedup, location_tag, recovery cancellation
- CLAUDE.md: supervisor event routing table added
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>