gramps
9c0c40c688
Add a persisted global App Settings switch. Off keeps the existing per-severity lifetimes (errors remain sticky); on makes every alert non-expiring and closes it when its body is clicked. The NotificationService supplies the current setting to each toast request. StickyNotificationIntegrationTests covers persistence and both request modes. 618 tests green, clean build with 0 warnings. Reference: Notification.Wpf exposes a CloseOnClick request option: https://github.com/G-Stas/Notification.Wpf
