feat: saved board views and richer board filters

The board now filters by text, type, priority and unassigned tickets as
well. Any combination can be saved as a named view, private or shared with
the project, and opened again with one click.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/api/tracker/application/src/lib/tracker-application.module.ts

@@ -29,6 +29,9 @@ import {
   UpdateNotificationSettingsCommandHandler,
 } from './notifications/notifications.commands';
 
+import { SAVED_FILTERS } from './saved-filters/saved-filters';
+import { SavedFiltersService } from './saved-filters.service';
+
 /** Notifications: derived from events, kept and dismissed per person. */
 const NOTIFICATIONS = [
   Notifier,
@@ -47,6 +50,7 @@ const SERVICES = [
   ChangesService,
   WorkflowsService,
   NotificationsService,
+  SavedFiltersService,
 ];
 
 /**
@@ -68,6 +72,7 @@ const SERVICES = [
     ...EVENT_HANDLERS,
     ...SAGAS,
     ...NOTIFICATIONS,
+    ...SAVED_FILTERS,
   ],
   exports: SERVICES,
 })