- Add NodeMetric/TunnelMetric/ServiceMonitor models and repository methods
- Implement metrics ingestion service with per-minute bucket aggregation
- Add health checker for node connectivity monitoring
- Wire node metrics from WebSocket SystemInfo messages
- Add tunnel metrics ingestion from flow upload endpoint
- Create monitoring REST API endpoints for nodes, tunnels, services
- Implement service monitor CRUD and execution (TCP/ICMP checks)
- Add MonitorPermission for non-admin access control
- Create frontend monitor page with node/tunnel/service views
- Add tunnel metrics ingestion from agent flow reports
- Include schema migration for tunnel_metric unique index
- Fix tunnel entry port conflict validation to use transaction
Entire-Checkpoint: 030821a7c8e3
* feat(frontend): add customizable favicon and corner logo with live preview
- Add app_logo and app_favicon config fields in config page
- Implement BrandLogo component with URL fallback to SVG logo
- Integrate BrandLogo into all layouts (admin, h5, h5-simple) and navbar
- Add real-time preview for favicon and logo in config page with error state
- Support both relative paths and full image URLs for branding assets
- Sync branding changes (app_name/app_logo/app_favicon) to site config on save
* fix(frontend): preserve tunnel node selection order
* fix(select): use useMemo for option label map to improve performance
sagitchu