- Standardized API responses in notification handlers
- Replaced c.Get with GetUserIDUUID for consistent user ID extraction
- Added routes: GET /notifications, POST /notifications/:id/read, POST /notifications/read-all
- Initialized NotificationService and NotificationHandlers in router
- Handlers and service already existed, only routes and response standardization were needed
Phase: PHASE-2
Priority: P1
Progress: 25/267 (9.4%)
