Add watched series/authors feature

Introduce watched lists for series and authors end-to-end.

- Add DB migration to create watched_series and watched_authors tables with indexes and foreign keys.
- Implement API routes: GET/POST for listing/adding and DELETE by id for both /api/user/watched-series and /api/user/watched-authors. Validation, ownership checks, and immediate targeted job triggers are included.
- Add client hooks (useWatchedSeries, useWatchedAuthors) with add/delete helpers and SWR revalidation.
- Add UI components: WatchButton (toggle/confirm) and WatchedListsSection for profile display and removal UX.
- Add processor (check-watched-lists.processor) and service (watched-lists.service) to scrape Audible, deduplicate, check library ownership, and auto-create requests; supports targeted checks for newly watched items.
- Include tests for the watched-lists service.

These changes implement the watched-lists feature to let users watch series/authors and have the system automatically detect and request new releases.

src/lib/services/scheduler.service.ts

@@ -10,7 +10,7 @@ import { RMABLogger } from '../utils/logger';
 
 const logger = RMABLogger.create('Scheduler');
 
-export type ScheduledJobType = 'plex_library_scan' | 'plex_recently_added_check' | 'audible_refresh' | 'retry_missing_torrents' | 'retry_failed_imports' | 'cleanup_seeded_torrents' | 'monitor_rss_feeds' | 'sync_goodreads_shelves';
+export type ScheduledJobType = 'plex_library_scan' | 'plex_recently_added_check' | 'audible_refresh' | 'retry_missing_torrents' | 'retry_failed_imports' | 'cleanup_seeded_torrents' | 'monitor_rss_feeds' | 'sync_goodreads_shelves' | 'check_watched_lists';
 
 export interface ScheduledJob {
   id: string;
@@ -133,6 +133,13 @@ export class SchedulerService {
         enabled: true, // Enable by default
         payload: {},
       },
+      {
+        name: 'Check Watched Lists',
+        type: 'check_watched_lists' as ScheduledJobType,
+        schedule: '0 0 * * *', // Daily at midnight (every 24 hours)
+        enabled: true, // Enable by default
+        payload: {},
+      },
     ];
 
     let created = 0;
@@ -353,6 +360,9 @@ export class SchedulerService {
       case 'sync_goodreads_shelves':
         bullJobId = await this.triggerSyncGoodreadsShelves(job);
         break;
+      case 'check_watched_lists':
+        bullJobId = await this.triggerCheckWatchedLists(job);
+        break;
       default:
         throw new Error(`Unknown job type: ${job.type}`);
     }
@@ -627,6 +637,13 @@ export class SchedulerService {
   private async triggerSyncGoodreadsShelves(job: any): Promise<string> {
     return await this.jobQueue.addSyncGoodreadsShelvesJob(job.id);
   }
+
+  /**
+   * Trigger watched lists check (watched series + watched authors)
+   */
+  private async triggerCheckWatchedLists(job: any): Promise<string> {
+    return await this.jobQueue.addCheckWatchedListsJob(job.id);
+  }
 }
 
 // Singleton instance