- Used platform: template instead of state trigger with entity_id: all
(entity_id: all is not valid for state triggers in HA)
- Template checks: from_state == 'unavailable' AND to_state not in
['unavailable', 'unknown', 'none'] — fires only on recovery
- Removed problematic regex condition; condition: [] keeps it simple
- Action: notify via Telegram bot with device name, entity_id, new state
- mode: queued to handle burst of devices coming online simultaneously
84cd63ce70