Notifications

The notification bell shows real-time alerts about fleet events.

Notification types

Type	Trigger
`machine_registered`	New machine checks in for the first time
`machine_offline`	Machine misses heartbeats past the timeout
`job_completed`	Deploy job finishes successfully
`job_failed`	Deploy job fails
`updates_available`	Machine reports pending updates
`daily_summary`	8 AM automated fleet health briefing

Includes: machines online/offline, pending updates count, jobs completed/failed in last 24 hours.