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/web/tracker/infrastructure/src/lib/tracker-infrastructure.providers.ts

@@ -10,6 +10,7 @@ import {
   NotificationsGateway,
   ProjectsGateway,
   ReleasesGateway,
+  SavedFiltersGateway,
   TrackerRealtimeGateway,
   UsersGateway,
 } from '@task-stream/web/tracker/domain';
@@ -24,6 +25,7 @@ import { GraphqlNotificationsGateway } from './adapters/graphql-notifications.ga
 import { HttpAttachmentsGateway } from './adapters/http-attachments.gateway';
 import { GraphqlProjectsGateway } from './adapters/graphql-projects.gateway';
 import { GraphqlRealtimeGateway } from './adapters/graphql-realtime.gateway';
+import { GraphqlSavedFiltersGateway } from './adapters/graphql-saved-filters.gateway';
 
 /** Ports → GraphQL adapters (and REST for files). */
 export function provideTrackerInfrastructure(): EnvironmentProviders {
@@ -37,5 +39,6 @@ export function provideTrackerInfrastructure(): EnvironmentProviders {
     { provide: UsersGateway, useClass: GraphqlUsersGateway },
     { provide: NotificationsGateway, useClass: GraphqlNotificationsGateway },
     { provide: TrackerRealtimeGateway, useClass: GraphqlRealtimeGateway },
+    { provide: SavedFiltersGateway, useClass: GraphqlSavedFiltersGateway },
   ]);
 }