Refactored DashboardChangeNotifier and IDashboardChangeNotifier to use async notification with improved error handling and logging. Updated SqlDashboardStorage to call the new async notification method after dashboard changes, ensuring non-blocking and reliable client updates.
Integrate SignalR to provide real-time dashboard update notifications.
- Added DashboardsHub and DashboardChangeNotifier on the backend.
- Modified SqlDashboardStorage to trigger notifications on changes.
- Registered SignalR services and mapped the hub endpoint.
- Updated Blazor clients to connect to the hub and refresh dashboards on change.
- Added SignalR client packages and necessary DI/configuration.