- Create notification management system with VNotifications class
- Build notification API endpoints (get, mark read, delete, preferences)
- Implement notification bell UI widget with real-time polling
- Add email queue system with digest support (instant/hourly/daily/weekly)
- Create notification trigger helpers for common events
- Add fine-grained user preference controls
- Implement cron script for email processing and cleanup
- Document setup and usage in docs/NOTIFICATIONS.md
Features:
- In-app notifications with dropdown
- Email delivery with batching
- 6 notification types (comment, like, subscribe, upload, mention, system)
- User preference controls per notification type
- Lightweight polling (30s interval)
- Auto-cleanup of old notifications (90 days)
- Production-ready with proper error handling