- Monitoring page: "Távoli monitoring" section showing healthcheck ping UUID
configuration status (configured/not configured) for each of the 5 pings
- Alert manager: persistent dashboard banners on all pages generated from
health check results, missing pings, and backup status
- Notification system: controller-side notifier sends events to hub relay,
with cooldown tracking and event-type filtering
- Notification preferences UI: email, event checkboxes, cooldown settings
on the settings page with test email functionality
- Settings refactored: shared settingsData() helper, NotificationPrefs
struct with getter/setter and defaults
New files:
- controller/internal/web/alerts.go (AlertManager)
- controller/internal/notify/notifier.go (hub notification client)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
