- Add getUnreadCount() endpoint to NotificationsServiceProtocol
- Add NotificationUnreadCountResponse model
- Add badgeCount and fetchUnreadCount() to NotificationsViewModel
- Update markAsRead/markAllAsRead to decrement badge count
- Create MainTabView with Home, Challenges, Clubs, Notifications tabs
- Add unread badge on notification tab using .badge() modifier
- Support injected ViewModel in NotificationsView for shared state
- Add badge count tests to NotificationServiceTests
- Fetch unread count on app launch and tab switch
Co-Authored-By: Paperclip <noreply@paperclip.ing>
- Extract NotificationItem/NotificationType to Models/Notification.swift
- Create NotificationsServiceProtocol with testable service layer
- Implement markAsRead(id:) and markAllAsRead() with HTTP calls
- Add NotificationError enum with localized descriptions
- Update NotificationsViewModel to use protocol-based service
- Add 18 unit tests (12 ViewModel + 6 Model) with mock service
- Update README with architecture documentation
