feat: Service status indicators (gateway, channels, sync health at a glance) #254
Description
Inspiration
openclaw-dashboard shows clear service status indicators — green/red/yellow dots for each component (gateway, channels, plugins).
What
Add a service status bar/panel to ClawMetry showing real-time health of each node's components:
- Gateway — running / stopped / degraded
- Channels — per-channel status (Telegram connected, Discord disconnected, etc.)
- Sync daemon — last heartbeat, connection quality
- System resources — CPU/memory/disk if available
- Uptime — how long each service has been running
Display as a compact status row on the fleet overview, with drill-down per node.
Why
Currently ClawMetry shows session data and cost metrics, but there's no at-a-glance "is everything healthy?" view. Service status indicators are the first thing you want to see when opening a monitoring dashboard.
Implementation notes
- Sync daemon already reports some of this; extend the heartbeat payload
- Color-coded indicators: green (healthy), yellow (degraded), red (down), gray (unknown)
- Fleet overview: show a mini status row per node (like GitHub Actions status checks)
- Historical uptime tracking (optional, v2)