## Summary
- Fix ArgoCD icon (use `argo-cd.png` per Dashboard Icons naming)
- Add Borgmatic backup metrics widget (time since last backup, archive size)
- Add Sifaka NAS disk usage widget (used/total space)
- Create `[[grafana]]` zk card with management notes
## What didn't work
Attempted Grafana iframe embedding for a metrics panel but reverted:
- Homepage iframe widget only supports height classes, not width
- Some panels fail to load even with anonymous auth enabled
- Documented in grafana zk card for future reference
## Deployment and Testing
- [x] ArgoCD icon displays correctly
- [x] Borgmatic metrics show time since backup and archive size
- [x] NAS disk usage shows used/total bytes
- [x] Grafana reverted to authenticated-only access
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/76
Erich Blume
e830a0f26b