Round 22: Exam Calendar, Tablet Grading, Student Achievements, Notification Center, Announcements, Styling
- Exam Calendar View: Teacher exam planning with calendar integration
- Teachers create/modify exams, admin full CRUD, students read-only
- CalendarEvent integration, 2-week warning, AI test availability badge
- Monthly/weekly calendar view, list view, statistics
- Tablet Grading View: Stylus annotation and AI grading audit
- HTML5 Canvas with PointerEvent pressure sensitivity
- Tool palette: pen, highlighter, eraser, text, stamp
- Quick grade buttons (German 1-6 scale)
- AI grading audit with detailed feedback and suggestions
- Student Achievements View: Badges, XP, leaderboard
- Badge collection grid with category filters
- Level/XP system with progress bars
- Leaderboard with opt-in
- Daily/weekly challenges
- Student Study Planner View: Pomodoro timer, weekly schedule
- Pomodoro timer with focus score
- Weekly study schedule with drag-and-drop
- AI study recommendations
- Session history and statistics
- Notification Center View: Categories, filters, bulk actions
- 6 categories, 4 priority levels
- Real-time polling (10 seconds)
- Preferences with quiet hours
- Statistics charts
- School Announcements View: CRUD, read receipts
- 6 announcement types with gradient headers
- Pin-to-top, read receipts, target audience
- Admin/teacher create, students/parents view
- Bug fixes: AnnouncementRead model user relation, User API schoolId field
- i18n: 200+ new keys, breadcrumb navigation fixes
- Styling: Gradient headers, animations, hover effects across all new views