Add reported-issues, Goodreads sync & notifs

Introduce user-reported-issues and Goodreads shelf sync features and wire them into notifications. Adds Prisma migrations and schema changes (ReportedIssue, GoodreadsShelf, GoodreadsBookMapping), API endpoints for reporting (POST /audiobooks/[asin]/report-issue) and admin management (list, resolve/dismiss, replace), and an admin UI section to view/dismiss/replace reported issues. Adds a new notification event (issue_reported) with updates to notification schemas, docs and provider handling, plus a notification-events constants file. Refactors request creation to use createRequestForUser service, adds a Goodreads sync processor/service/hooks/UI modals, a scrape-resilience util, and related tests and minor integration updates.

src/app/admin/settings/tabs/NotificationsTab/NotificationsTab.tsx

@@ -3,6 +3,7 @@
 import { useState, useEffect } from 'react';
 import { RMABLogger } from '@/lib/utils/logger';
 import { fetchWithAuth } from '@/lib/utils/api';
+import { EVENT_LABELS } from '@/lib/constants/notification-events';
 
 const logger = RMABLogger.create('NotificationsTab');
 
@@ -43,12 +44,7 @@ interface ModalState {
   backend?: NotificationBackend;
 }
 
-const eventLabels: Record<string, string> = {
-  request_pending_approval: 'Request Pending Approval',
-  request_approved: 'Request Approved',
-  request_available: 'Audiobook Available',
-  request_error: 'Request Error',
-};
+const eventLabels: Record<string, string> = EVENT_LABELS;
 
 export function NotificationsTab() {
   const [backends, setBackends] = useState<NotificationBackend[]>([]);