# CompetenceTrack — Project Worklog

---
Task ID: 26
Agent: round18-seating-chart-student-avatars-newsletter-badges-deep-styling
Task: Seating Chart, Student Avatars, Newsletter, Badges, Deep Styling Polish
Date: Round 18 complete

Work Log:
- Updated Prisma schema: added `avatarUrl` and `avatarInitials` fields to Student model, added Newsletter model with full fields (title, content, summary, imageUrl, category, isPublished, publishedAt, tags, etc.), added relations to School and User models
- Ran `bun run db:push` successfully — database in sync
- Added 40+ i18n keys for both DE and EN: newsletter.*, avatar.*, grading.sehr_gut through grading.ungenuegend
- Created Newsletter API routes: `/api/newsletters/route.ts` (GET list with pagination/filters, POST create), `/api/newsletters/[id]/route.ts` (GET, PUT, DELETE, POST publish/unpublish)
- Added newsletter API functions to lib/api.ts: fetchNewsletters, fetchNewsletter, createNewsletter, updateNewsletter, publishNewsletter, unpublishNewsletter, deleteNewsletter + NewsletterData interface
- Updated Student interface in api.ts to include avatarUrl and avatarInitials fields
- Updated students API route to support avatarUrl in PUT handler
- Updated student details API to include avatarUrl and avatarInitials in select
- Created StudentAvatar component (src/components/student-avatar.tsx): reusable avatar with initials in colored circles or photo display, name-hash-based consistent colors, tooltip support, multiple sizes (xs/sm/md/lg/xl)
- Updated globals.css with 15+ new CSS utility classes: gradient-card-bg, sparkline-mini, grade-badge-1 through grade-badge-6, mastery-badge-low/medium/high, category-badge-*, newsletter-card, avatar-circle, avatar-photo, animated-underline, animate-count-up, animate-leaf-sway, animate-card-entrance, gradient-border-card
- Updated dashboard-view.tsx: added DashboardNewsletterCard with newsletter section, category badges, preview cards, create dialog, view dialog with rich content, share button
- Updated classes-view.tsx: added Class Photo Gallery section with StudentAvatar grid, staggered entrance animation, click-to-navigate-to-student-detail, gradient-border-card class, replaced inline avatar with StudentAvatar component
- Updated progress-entries-view.tsx, assessments-view.tsx, grading-view.tsx, attendance-view.tsx, reports-view.tsx, student-detail-view.tsx: replaced inline avatar with StudentAvatar component
- Updated grading-view.tsx: enhanced gradeColor with 6-level German grade system (sehr gut through ungenuegend) with grade-badge CSS classes and label text
- Updated student-detail-view.tsx: added avatar upload button with dialog for URL input
- Lint: 0 errors
- i18n.ts: 0 duplicate keys in both DE and EN dictionaries
- Dev log: stale browser cache error (not a code error), compilation successful
- Committed and pushed to GitHub as Round 18

Verification Results (Round 18):
- `bun run lint`: 0 errors ✓
- `bun run db:push`: Database in sync ✓
- i18n.ts duplicate keys: 0 ✓

---
Task ID: 25
Agent: newsletter-avatar-styling
Task: Student Avatars + School Newsletter + Deep Styling Polish

Work Log:
- Updated Prisma schema: added `avatarUrl` and `avatarInitials` fields to Student model, added Newsletter model with full fields (title, content, summary, imageUrl, category, isPublished, publishedAt, tags, etc.), added relations to School and User models
- Ran `bun run db:push` successfully — database in sync
- Added 40+ i18n keys for both DE and EN: newsletter.*, avatar.*, grading.sehr_gut through grading.ungenuegend
- Created Newsletter API routes: `/api/newsletters/route.ts` (GET list with pagination/filters, POST create), `/api/newsletters/[id]/route.ts` (GET, PUT, DELETE, POST publish/unpublish)
- Added newsletter API functions to lib/api.ts: fetchNewsletters, fetchNewsletter, createNewsletter, updateNewsletter, publishNewsletter, unpublishNewsletter, deleteNewsletter + NewsletterData interface
- Updated Student interface in api.ts to include avatarUrl and avatarInitials fields
- Updated students API route to support avatarUrl in PUT handler
- Updated student details API to include avatarUrl and avatarInitials in select
- Created StudentAvatar component (src/components/student-avatar.tsx): reusable avatar with initials in colored circles or photo display, name-hash-based consistent colors, tooltip support, multiple sizes (xs/sm/md/lg/xl)
- Updated globals.css with 15+ new CSS utility classes: gradient-card-bg, sparkline-mini, grade-badge-1 through grade-badge-6, mastery-badge-low/medium/high, category-badge-* (6 categories), newsletter-card, avatar-circle, avatar-photo, animated-underline, animate-count-up, animate-leaf-sway, animate-card-entrance, gradient-border-card
- Updated dashboard-view.tsx: added DashboardNewsletterCard with newsletter section (3 latest published newsletters, category badges, preview cards, create dialog, view dialog with rich content, share button), added Leaf sway animation, added count-up animation for paper saved counter, added animated-underline class, imported Newspaper/Share2/PenSquare/Eye/Tag icons
- Updated classes-view.tsx: added Class Photo Gallery section with StudentAvatar grid, staggered entrance animation, click-to-navigate-to-student-detail, added gradient-border-card class, replaced inline avatar with StudentAvatar component, added Camera icon
- Updated progress-entries-view.tsx: replaced inline avatar with StudentAvatar component, updated masteryBadge to use CSS class-based mastery-badge-low/medium/high for deeper polish
- Updated assessments-view.tsx: replaced inline avatar with StudentAvatar component
- Updated grading-view.tsx: replaced inline avatar with StudentAvatar component, enhanced gradeColor to include 6-level German grade system (sehr gut through ungenuegend) with grade-badge CSS classes and label text, added grade label display below each grade badge
- Updated student-detail-view.tsx: replaced inline initials with StudentAvatar component, added avatar upload button (Camera icon) with dialog for URL input, added avatarUploadOpen/avatarUrlInput/avatarUploading state, added Camera and Upload icons
- Updated attendance-view.tsx: replaced inline avatar with StudentAvatar component
- Updated reports-view.tsx: replaced inline avatar with StudentAvatar component (both draft and final report views)
- Lint: 0 errors
- Dev log: stale browser cache error (not a code error), compilation successful

Stage Summary:
- Student Avatar System: Created reusable StudentAvatar component with name-hash-based consistent colors, photo support, 5 sizes, tooltip support. Integrated across 7 views (classes, progress, assessments, grading, attendance, reports, student-detail)
- School Newsletter: Full CRUD API + create/publish/unpublish flow, dashboard newsletter card with 3 latest items, category badges (6 categories), newsletter preview cards, create dialog, view dialog with rich content, share functionality
- Deep Styling Polish: 15+ new CSS utility classes (gradient-card-bg, grade-badge-1-6, mastery-badge-low/medium/high, category-badge-*, newsletter-card, avatar-circle, avatar-photo, animated-underline, animate-count-up, animate-leaf-sway, animate-card-entrance, gradient-border-card), Leaf sway animation, count-up animation, animated underlines, German grade system with 6 levels and labels
- 40+ i18n keys added for both DE and EN

---
Task ID: 18
Agent: round17-qr-codes-gamification-badges-auto-award-badge-management
Task: QR Codes, Gamification Badges, Auto-Award, Badge Management
Date: Round 17 complete

Work Log:
- Verified lint: 0 errors
- Prisma db:push: database already in sync
- Checked i18n.ts: 0 duplicate keys in both de and en dictionaries (2983 keys each, perfectly matched)
- Dev log reviewed: browser cache stale module issue noted (not a code error)
- Committed and pushed to GitHub as Round 17

Verification Results (Round 17):
- `bun run lint`: 0 errors ✓
- `bun run db:push`: Database in sync ✓
- i18n.ts duplicate keys: 0 ✓
- i18n.ts key parity (de/en): 2983/2983 ✓

---
Task ID: 17
Agent: round16-peer-assessment-emergency-contacts-school-events-branding-email-templates-performance-onboarding
Task: Peer Assessment, Emergency Contacts, School Events, School Branding, Email Templates, Performance, Styling Polish, Onboarding 24 Steps
Date: Round 16 complete

Work Log:
- Added 5 new Prisma models: PeerAssessment, EmergencyContact, SchoolEvent, SchoolBranding, EmailTemplate
  - PeerAssessment: schoolId, classGroupId, subjectId, assessorId, assesseeId, competencyId, rating, comment, status
  - EmergencyContact: schoolId, studentId, name, relationship, phone, email, isPrimary, alternatePhone
  - SchoolEvent: schoolId, title, description, eventType, startDate, endDate, location, organizerId, isPublic, maxParticipants
  - SchoolBranding: schoolId, logoUrl, primaryColor, secondaryColor, accentColor, fontFamily, headerTemplate, footerTemplate, reportTemplate
  - EmailTemplate: schoolId, name, subject, bodyHtml, bodyText, category, variables, isDefault
- New API routes:
  - Peer Assessments: GET/POST /api/peer-assessments, GET/PUT/DELETE /api/peer-assessments/[id]
  - Emergency Contacts: GET/POST /api/emergency-contacts, GET/PUT/DELETE /api/emergency-contacts/[id]
  - School Events: GET/POST /api/school-events, GET/PUT/DELETE /api/school-events/[id], POST /api/school-events/[id]/register
  - Email Templates: GET/POST /api/email-templates, GET/PUT/DELETE /api/email-templates/[id], POST /api/email-templates/send
  - Email Logs: GET /api/email-logs
- Added caching utility (src/lib/cache.ts) for performance optimization
- Onboarding flow expanded to 24 steps
- Styling polish across all views
- 30 files changed, 4832 insertions, 139 deletions

Verification Results (Round 16):
- `bun run lint`: 0 errors ✓
- `bun run db:push`: Database already in sync, Prisma Client regenerated ✓
- dev.log: Server running normally, only cross-origin warning (non-critical) ✓
- i18n.ts: No duplicate keys found in DE or EN dictionaries ✓
- Post-check lint: 0 errors confirmed ✓

Git:
- Commit: 6174f12
- Pushed to: https://github.com/cetinmustafa83/exametra.git (main, force push)

---
Task ID: 16
Agent: round15-timetable-resource-library-advanced-analytics-accessibility
Task: Timetable, Resource Library, Advanced Analytics, Accessibility
Date: Round 15 complete

Work Log:
- Added 2 new Prisma models: TimetableSlot, Resource
  - TimetableSlot: schoolId, classGroupId, subjectId, teacherId, dayOfWeek (Mon-Sun), periodStart, periodEnd, room, notes
  - Resource: schoolId, authorId, title, description, resourceType (document/video/link/worksheet/lesson_plan), category (teaching/assessment/curriculum/professional_development), url, content, tags, isPublic, downloadCount
- New views: timetable-view.tsx, resource-library-view.tsx
- New API routes:
  - Timetable: GET/POST /api/timetable, GET/PUT/DELETE /api/timetable/[id]
  - Resources: GET/POST /api/resources, GET/PUT/DELETE /api/resources/[id]
- New navigation items: Timetable, Resources
- Added 140+ new i18n keys (de/en) for timetable, resource library, advanced analytics, accessibility
- Fixed duplicate i18n key: analytics.class_comparison (removed duplicates from both DE and EN)
- Advanced Analytics: school overview, student performance, class comparison, teacher performance, predictive, at-risk, excelling, needs attention
- Accessibility improvements: ARIA labels, keyboard navigation, screen reader support, high-contrast mode, reduced motion

Verification Results (Round 15 re-verification):
- `bun run lint`: 0 errors ✓
- `bun run db:push`: Database already in sync, Prisma Client regenerated ✓
- dev.log: Previous `await in non-async function` error in analytics route was already fixed in current codebase ✓
- i18n.ts: No duplicate keys found (duplicates were already removed in previous fix) ✓
- Post-fix lint: 0 errors confirmed ✓

Git:
- Commit: 1b38455 — "Round 15: Timetable, Resource Library, Advanced Analytics, Accessibility"
- Pushed to GitHub: main branch (force push) ✓

Verification Results (Round 15 — Final):
- `bun run lint`: 0 errors ✓
- `bun run db:push`: Database already in sync, Prisma Client regenerated ✓
- dev.log: Server running on port 3000, GET / 200 OK; previous analytics `await in non-async` error was from an older version, codebase is correct ✓
- i18n.ts: No duplicate keys in DE or EN ✓
- Post-fix lint: 0 errors confirmed ✓

Next Phase Priorities:
- Parent portal integration (grades, attendance, messaging)
- Notification system (email, in-app, push)
- Data export/import (CSV, Excel, PDF report generation)
- Multi-tenancy improvements (school branding, custom domains)
- Performance optimization (caching, lazy loading, database indexing)

---
Task ID: 15
Agent: round14-self-assessment-learning-goals-portfolio-homework-announcements
Task: Self-Assessment, Learning Goals, Portfolio, Homework, Announcements
Date: Round 14 verification & deployment

Work Log:
- Verified 5 new Prisma models: SelfAssessment, LearningGoal, PortfolioEntry, Homework, HomeworkSubmission, Announcement
- SelfAssessment: schoolId, studentId, competencyId, classGroupId, selfLevel (1-6), confidence (1-5), reflection, evidence, goalId
- LearningGoal: schoolId, studentId, competencyId, title, description, targetLevel, currentLevel, deadline, status (active/completed/abandoned), progress (0-100)
- PortfolioEntry: schoolId, studentId, title, description, entryType (artwork/writing/project/presentation/achievement/reflection), competencyId, content, mediaUrls, notebookPageId, drawingId, isPublic, tags
- Homework: schoolId, classGroupId, subjectId, teacherId, title, description, dueDate, homeworkType (assignment/reading/project/practice/research), maxPoints, attachments, isPublished
- HomeworkSubmission: homeworkId, studentId, content, attachments, status (pending/submitted/graded/late), score, feedback, submittedAt, gradedAt
- Announcement: schoolId, authorId, title, content, priority (low/normal/high/urgent), targetAudience (all/teachers/students/parents/class), classGroupId, isPinned, expiresAt
- Added relations to School, User, ClassGroup, Student, Subject, Competency models
- New API routes:
  - Self-Assessments: GET/POST /api/self-assessments, GET/PUT/DELETE /api/self-assessments/[id]
  - Learning Goals: GET/POST /api/learning-goals, GET/PUT/DELETE /api/learning-goals/[id]
  - Portfolio: GET/POST /api/portfolio, GET/PUT/DELETE /api/portfolio/[id]
  - Homework: GET/POST /api/homework, GET/PUT/DELETE /api/homework/[id]
  - Homework Submissions: GET/POST /api/homework/[id]/submissions, GET/PUT/DELETE /api/homework/[id]/submissions/[submissionId]
  - Announcements: GET/POST /api/announcements, GET/PUT/DELETE /api/announcements/[id]
- New views: homework-view.tsx, portfolio-view.tsx
- New navigation items: homework (BookCheck icon), portfolio (Briefcase icon)
- Added ViewName types: 'homework', 'portfolio'
- Announcement Banner component in app-layout.tsx with priority colors, dismiss functionality, localStorage persistence
- Added student nav items: homework, portfolio
- Enhanced dashboard-view.tsx with self-assessment, learning goals, homework, and announcements widgets
- Enhanced student-detail-view.tsx with self-assessment, learning goals, portfolio tabs
- 170+ new i18n keys for DE and EN (self-assessment, learning-goals, portfolio, homework, announcements)

Verification Results (Round 14 — Re-verified):
- bun run lint: 0 errors ✅
- bun run db:push: schema already in sync ✅
- Dev server: running on port 3000, 200 OK ✅
- Dev.log: transient ENOENT/routes-manifest.json on startup (resolved), server restarted successfully
- Duplicate i18n keys: 2491 keys in DE, 2491 keys in EN, 0 duplicates ✅
- i18n key parity: DE and EN have identical key sets ✅
- Git commit: 744c44a "Round 14: Updated worklog with verification results" ✅
- GitHub push: up-to-date (already pushed) ✅

Stage Summary:
- All 5 new Prisma models (SelfAssessment, LearningGoal, PortfolioEntry, Homework, HomeworkSubmission, Announcement) created and synced
- All 6 API route groups created with full CRUD operations
- 2 new views created: homework-view.tsx, portfolio-view.tsx
- Announcement Banner integrated into app-layout.tsx
- Dashboard enhanced with new widgets
- Student detail view enhanced with self-assessment and learning goals tabs
- 170+ new i18n keys added (no duplicates)
- Current status: Round 14 complete ✅
- Next phase priorities: Parent portal, mobile responsiveness, performance optimization, data export/import

---
Task ID: 14
Agent: reports-scheduling-multi-school
Task: Report Scheduling + Multi-School District Support

Work Log:
- Verified existing ReportSchedule Prisma model (already present in schema with all required fields: schoolId, classGroupId, template, frequency, dayOfWeek, dayOfMonth, monthOfYear, recipients, includeStudents, includeGrades, includeAttendance, includeBehavior, includeCompetencies, isActive, lastRunAt, nextRunAt, isDemo, deletedAt)
- Verified SchoolDistrict Prisma model (already present with name, code, region, country, adminEmail, isActive, deletedAt)
- Verified School model has districtId and district relation to SchoolDistrict
- Verified ClassGroup model has reportSchedules relation to ReportSchedule
- Verified API routes for report-schedules: GET/POST /api/report-schedules, GET/PUT/DELETE /api/report-schedules/[id], POST /api/report-schedules/[id]/run
- Verified API routes for districts: GET/POST /api/districts, GET/PUT/DELETE /api/districts/[id], GET/POST /api/districts/[id]/schools
- Fixed districts API routes: removed `deletedAt: null` filter on School model (School model has no deletedAt field) in districts/route.ts, districts/[id]/route.ts, and districts/[id]/schools/route.ts
- Verified reports-view.tsx has complete Schedules tab with: create/edit dialog, frequency/class/template selection, include options checkboxes, schedule list with status/next run/toggle, manual trigger button, delete confirmation, visual timeline with progress bars
- Verified settings-view.tsx has complete District tab (SUPER_ADMIN only) with: district CRUD, school assignment, cross-school comparison, district create/edit dialog, delete confirmation
- Verified API client functions in src/lib/api.ts: fetchReportSchedules, createReportSchedule, updateReportSchedule, deleteReportSchedule, runReportSchedule, fetchDistricts, createDistrict, updateDistrict, deleteDistrict, fetchDistrictSchools, assignSchoolToDistrict
- Verified i18n keys for both schedules and district in DE and EN (35+ keys each)
- Ran bun run lint: no errors
- Ran bun run db:push: schema already in sync

Stage Summary:
- All Report Scheduling features already implemented from previous agent: Prisma model, API routes, UI with Schedules tab, i18n keys
- All Multi-School District Support features already implemented from previous agent: Prisma model, API routes, UI with District tab, i18n keys
- Bug fix: removed invalid `deletedAt: null` filter on School model in 3 district API route files
- Current status: Round 13 complete

---
Task ID: 12
Agent: behavior-audit
Task: Behavior Tracking Enhancement + Audit Logging

Work Log:
- Added BehaviorIntervention Prisma model with fields: type, description, status, assignedTo, startDate, endDate, outcome, incidentId, isDemo, deletedAt
- Added relations to School, Student, BehaviorIncident, and User models
- Enhanced AuditLog model with new fields: changes (JSON before/after), ipAddress, userAgent
- Ran db:push to sync schema changes
- Created audit logging middleware (src/lib/audit.ts) with logAudit() and withAuditLog() helper functions
- Created Intervention API routes: GET/POST /api/behavior-interventions, GET/PUT/DELETE /api/behavior-interventions/[id]
- Enhanced Audit Log API with pagination, entityType filter, userId filter, and CSV export endpoint
- Added API client functions: fetchBehaviorInterventions, createBehaviorIntervention, updateBehaviorIntervention, deleteBehaviorIntervention, exportAuditLogCsv
- Enhanced AuditLogEntry type with changes, ipAddress, userAgent fields
- Added fetchAuditLog to return paginated response (AuditLogPaginatedResponse)
- Added "Analytics" tab to behavior-tracking-view.tsx with:
  - Line chart: trend of positive vs negative incidents over time (by week)
  - Pie chart: category distribution breakdown
  - Bar chart: time-of-day analysis showing when incidents most frequently occur
  - Horizontal stacked bar chart: class comparison across classes
  - Risk profile: students with frequent negative incidents (high/medium/low risk)
  - Positive reinforcement: students with positive behavior trends
  - Period selector: last 30 days, last 90 days, this school year
- Added "Interventions" tab to behavior-tracking-view.tsx with:
  - Intervention CRUD: create, edit, delete interventions
  - Status tracking with progress indicators (planned/in_progress/completed/cancelled)
  - Type filter and status filter
  - Quick status change buttons (planned -> in_progress -> completed)
  - Effectiveness outcome display for completed interventions
  - Linked incident display
  - Assigned user display
  - Intervention form dialog with all fields
- Enhanced settings-view.tsx audit tab with:
  - Entity type filter chips
  - Pagination (previous/next page controls)
  - CSV export button
  - Click-to-view detail dialog showing before/after changes
  - IP address display in timeline entries
  - User agent display in detail dialog
- Added 150+ new i18n keys (DE + EN) for behavior analytics, interventions, and audit log enhancement
- Lint passes with 0 errors

Stage Summary:
- New Prisma model: BehaviorIntervention (behavior_interventions table)
- Enhanced AuditLog model with changes, ipAddress, userAgent fields
- New file: src/lib/audit.ts (audit logging middleware)
- New files: src/app/api/behavior-interventions/route.ts, src/app/api/behavior-interventions/[id]/route.ts
- Modified: src/app/api/audit-log/route.ts (pagination, filters, CSV export)
- Modified: src/lib/api.ts (intervention API functions, enhanced audit log types)
- Modified: src/lib/i18n.ts (150+ new DE/EN keys)
- Modified: src/components/behavior-tracking-view.tsx (analytics tab + interventions tab)
- Modified: src/components/settings-view.tsx (enhanced audit tab with pagination, filters, export, detail view)
- Modified: prisma/schema.prisma (BehaviorIntervention model + AuditLog enhancements)

---

## Current Project Status (Round 14 — Self-Assessment, Learning Goals, Portfolio, Homework, Announcements)

**Status**: Stable, all features working, pushed to GitHub
**Version**: v14 (0a7cfae)

### Completed Modifications (Round 14)

1. **Student Self-Assessment**
   - Prisma model: SelfAssessment (schoolId, studentId, competencyId, classGroupId, selfLevel 1-6, confidence 1-5, reflection, evidence, goalId)
   - API: GET/POST /api/self-assessments, GET/PUT/DELETE /api/self-assessments/[id]
   - UI: Self-assessment section in student-detail-view with radar chart comparing self vs teacher assessment, competency selector, mastery level slider (1-6), confidence selector (1-5), reflection/evidence text areas, gap analysis badges, create/edit/delete dialogs

2. **Learning Goals**
   - Prisma model: LearningGoal (schoolId, studentId, competencyId, title, description, targetLevel, currentLevel, deadline, status active/completed/abandoned, progress 0-100)
   - API: GET/POST /api/learning-goals, GET/PUT/DELETE /api/learning-goals/[id]
   - UI: Learning goals section in student-detail-view with progress bars, deadline countdown tracking, status tracking (active/completed/abandoned), celebration animation on completion, create/edit/delete dialogs, competency linking

3. **Portfolio System**
   - Prisma model: PortfolioEntry (schoolId, studentId, title, description, entryType artwork/writing/project/presentation/achievement/reflection, competencyId, content, mediaUrls, notebookPageId, drawingId, isPublic, tags)
   - API: GET/POST /api/portfolio, GET/PUT/DELETE /api/portfolio/[id]
   - UI: Portfolio View with grid and timeline views, type-based filtering (artwork/writing/project/presentation/achievement/reflection), tag filtering, search, public/private toggle, create/edit/delete dialogs

4. **Homework Management**
   - Prisma models: Homework (schoolId, classGroupId, subjectId, teacherId, title, description, dueDate, homeworkType assignment/reading/project/practice/research, maxPoints, attachments, isPublished) + HomeworkSubmission (homeworkId, studentId, content, attachments, status pending/submitted/graded/late, score, feedback, submittedAt, gradedAt)
   - API: GET/POST /api/homework, GET/PUT/DELETE /api/homework/[id], GET/POST /api/homework/[id]/submissions, GET/PUT/DELETE /api/homework/[id]/submissions/[submissionId]
   - UI: Homework View with teacher mode (create, edit, delete, submissions, grading with score slider and feedback) and student mode (submit, view feedback), color-coded due date badges (overdue=rose, today=amber, upcoming=emerald), homework type badges with icons

5. **Announcements**
   - Prisma model: Announcement (schoolId, authorId, title, content, priority low/normal/high/urgent, targetAudience all/teachers/students/parents/class, classGroupId, isPinned, expiresAt)
   - API: GET/POST /api/announcements, GET/PUT/DELETE /api/announcements/[id]
   - UI: Announcement banner in app-layout with priority colors (urgent=rose, high=amber, normal=emerald, low=teal), dismiss button with localStorage persistence, dashboard announcements card with expand/collapse, create announcement dialog for admin/teacher roles

6. **6 New Prisma Models**
   - SelfAssessment, LearningGoal, PortfolioEntry, Homework, HomeworkSubmission, Announcement
   - Relations added to School, User, ClassGroup, Student, Subject, Competency models

7. **10+ New API Route Directories**
   - /api/self-assessments, /api/learning-goals, /api/portfolio, /api/homework, /api/homework/[id]/submissions, /api/announcements, and more

8. **2 New Views**
   - portfolio-view.tsx — Grid/timeline portfolio with type filtering, tags, public/private toggle
   - homework-view.tsx — Teacher/student homework management with grading interface

9. **2 New Navigation Items**
   - Portfolio (Briefcase icon) — added to Teaching section and Student nav
   - Homework (BookCheck icon) — added to teacher, student, and parent nav sections

10. **170+ New i18n Keys**
    - Self-assessment, learning goals, portfolio, homework, and announcements keys in both DE and EN
    - No duplicate keys, full DE/EN parity

11. **Styling Improvements**
    - Priority colors for announcements (urgent=rose, high=amber, normal=emerald, low=teal)
    - Due date colors for homework (overdue=rose, today=amber, upcoming=emerald)
    - Announcement banner with dismiss animation (framer-motion slide up + fade out)
    - 44px minimum touch targets for tablet compatibility

### Verification Results
- Lint: 0 errors ✅
- Dev server: Running, no compilation errors ✅
- Prisma: Database in sync ✅
- Pushed to GitHub ✅

### Unresolved Issues / Next Phase Priority

1. Timetable/Schedule management
2. Digital resource library
3. Emergency contacts management
4. Student transportation management
5. Peer assessment system
6. School events management
7. Advanced analytics dashboard
8. Email notification integration
9. Keyboard navigation improvements
10. More accessibility improvements

---

## Current Project Status (Round 13 — Rubric Enhancement + Curriculum Mapping + Attendance Analytics)

**Status**: Stable, all features working  
**Version**: v13

### Completed Modifications (Round 13)

1. **Rubric Enhancement**
   - Rubric Templates: 5 pre-built templates (Math Assessment, German Essay, English Writing, Project Work, Oral Presentation) with full criteria and levels
   - Template dialog accessible from "Templates" button in header — select template to pre-populate create form
   - Rubric-Based Grading: Score sheet dialog with level selectors per criterion, auto-grade calculation
   - Auto-Grade Calculation: Weighted percentage, final score, grade (1-6 German system), criterion breakdown with progress bars
   - Rubric Analytics: Stats cards, criteria performance bars, grade distribution visualization
   - New API: GET /api/rubrics/templates, POST /api/rubrics/[id]/grade, GET /api/rubrics/[id]/analytics
   - New API client functions: fetchRubricTemplates, gradeWithRubric, fetchRubricAnalytics

2. **Curriculum Mapping**
   - New Prisma models: CurriculumStandard (code, title, description, gradeLevel, category, source) and CurriculumStandardLink (coverageLevel, notes)
   - Relations added to School, Subject, and Competency models
   - Curriculum Coverage View: 4 stats cards, search/filter, 3 tabs (Standards, Heatmap, Gap Analysis)
   - Standards tab: CRUD with code, title, subject, grade level, category, source; linked competencies badge
   - Heatmap tab: coverage visualization by subject/grade with color-coded progress bars
   - Gap Analysis tab: standards without competency links with quick link button
   - Link Competency dialog: search/select competency, coverage level (full/partial/related), notes
   - Detail dialog: full standard view with linked competencies and unlink ability
   - New API: /api/curriculum-standards (GET/POST), /api/curriculum-standards/[id] (GET/PUT/DELETE), /api/curriculum-standards/[id]/links (GET/POST)
   - New API client functions: fetchCurriculumStandards, createCurriculumStandard, updateCurriculumStandard, deleteCurriculumStandard, linkCurriculumStandard, unlinkCurriculumStandard, fetchCurriculumStandardLinks

3. **Attendance Analytics**
   - New "Analytics" tab in attendance view with BarChart3 icon
   - AttendanceAnalyticsTab component with Recharts visualizations
   - Line chart: weekly attendance rate and absence rate trends
   - Bar chart: day-of-week analysis with attendance rate and absent count
   - Pie chart: status distribution (present/absent/excused/late) with emerald/rose/amber/teal colors
   - Chronic Absence card: students with >=10% absence rate
   - Risk Indicators card: medium/high/critical risk with colored badges
   - Class Comparison card: attendance rate bars across classes
   - CSV Export: download attendance analytics data as CSV
   - New API: GET /api/attendance/analytics?schoolId=xxx&classGroupId=yyy
   - New API client function: fetchAttendanceAnalytics

4. **100+ New i18n Keys**
   - Rubric enhancement: templates, grading, analytics, export, score sheet (20+ keys)
   - Curriculum standards: CRUD, mapping, heatmap, gap analysis, coverage levels (40+ keys)
   - Attendance analytics: trends, day-of-week, chronic absence, risk indicators, export (20+ keys)

5. **2 New Prisma Models**
   - CurriculumStandard — school curriculum standards with code, grade level, category, source
   - CurriculumStandardLink — links between standards and competencies with coverage level

6. **7 New API Route Files**
   - /api/rubrics/templates/route.ts
   - /api/rubrics/[id]/grade/route.ts
   - /api/rubrics/[id]/analytics/route.ts
   - /api/curriculum-standards/route.ts
   - /api/curriculum-standards/[id]/route.ts
   - /api/curriculum-standards/[id]/links/route.ts
   - /api/attendance/analytics/route.ts

### Verification Results
- App compiles and runs on port 3000
- Lint: only set-state-in-effect warnings (pre-existing pattern)
- 7 new API route files, 2 new Prisma models, 1 new UI component

---

## Current Project Status (Round 12 — WebSocket Service, Collaborative Editing, Push Notifications)

**Status**: Stable, all features working
**Version**: v12

### Completed Modifications (Round 12)

1. **WebSocket Mini-Service**
   - New mini-service at `mini-services/ws-service/` with Socket.IO server on port 3003
   - Handles: auth, notebook:join/leave, notebook:cursor, notebook:edit, notification:new/read, presence:update, activity:join
   - HTTP API endpoint at `/api/push-notification` for server-side notification push
   - Health check endpoint at `/health`
   - Frontend connects via `io("/?XTransformPort=3003")`

2. **Collaborative Editing for Notebook Pages**
   - `useNotebookCollaboration` hook in `src/lib/websocket.ts` — manages room presence, cursors, edits, activities
   - Online Users Indicator in notebook header (colored avatar dots with Radio icon, tooltip with names)
   - Activity Feed Popover (shows "User X started editing page Y" entries)
   - Cursor overlays on page content area (colored MousePointer2 cursors with user names, positioned by percentage)
   - "Editing by..." indicator in page title bar (amber badge with MousePointer2 icon)
   - Edit broadcasting (debounced 500ms) and incoming edit application (last-write-wins)
   - Cursor position broadcasting (throttled 200ms)
   - Page change activity broadcasting

3. **Real-Time Push Notifications**
   - `useWebSocket` hook connects to ws-service on login
   - `usePushNotifications` hook listens for `notification:new` events
   - On push notification: plays notification sound (if enabled), shows toast, refreshes bell count
   - `notifications.ts` updated: `createNotification()` and `createNotificationForUsers()` also push via HTTP to ws-service (fire-and-forget)
   - Server-side push: when notebook shared, behavior alert, grade computed — all push notifications to ws-service

4. **Notification Sound Setting**
   - `NotificationSoundSetting` component in settings-view.tsx
   - Toggle switch with Volume2/VolumeX icons
   - Web Audio API beep (oscillator, 880→1100→880 Hz, 0.3s duration)
   - Preference stored in localStorage (`ct_notification_sound`)
   - Plays preview sound when enabling

5. **22 New i18n Keys**
   - Collaboration keys (10 DE + 10 EN): online_users, editing_by, activity_title, no_activity, started_editing, realtime_connected, realtime_disconnected, conflict_resolved, cursors_visible, user_joined, user_left
   - Notification sound keys (4 DE + 4 EN): notification_sound, notification_sound_desc, notification_sound_enabled, notification_sound_disabled

6. **Bug Fixes**
   - Fixed pre-existing parsing error in settings-view.tsx (stray `)}` after backup tab)
   - Fixed pre-existing TypeScript error in api.ts (`downloadCsvExport` type missing `'attendance'`)

### New Files Created
- `mini-services/ws-service/package.json`
- `mini-services/ws-service/tsconfig.json`
- `mini-services/ws-service/index.ts`
- `src/lib/websocket.ts`

### Files Modified
- `src/components/notebooks-view.tsx` — Collaborative editing UI elements, cursor overlays, activity feed, edit broadcasting
- `src/components/app-layout.tsx` — Push notification handler, WebSocket connection, notification sound
- `src/components/settings-view.tsx` — Notification sound setting component, bug fixes
- `src/lib/notifications.ts` — WebSocket push integration via HTTP API
- `src/lib/i18n.ts` — 22 new i18n keys (DE + EN)
- `src/lib/api.ts` — Extended downloadCsvExport type
- `package.json` — Added socket.io-client dependency

### Verification Results
- Dev server: Running on port 3000
- WS service: Running on port 3003, health check returns OK
- Push notification API: Tested successfully (returns `{success: true}`)
- App compiles and loads correctly
- TypeScript: 0 errors in modified files (pre-existing errors in other files unchanged)

---

## Previous Rounds

<details>
<summary>Round 11 — DrawingCanvas, Versioning, Student Auth, Parent Portal, Calendar, Reports, Import/Export</summary>
**Version**: v11 (c3d36aa)  
**Push Date**: 2025-07-29  
**Repo**: https://github.com/cetinmustafa83/exametra

### Assessment
- App loads correctly at localhost:3000
- All 22+ views render without errors
- Lint passes cleanly (0 errors, 0 warnings)
- No emojis in codebase — all Lucide icons
- DrawingCanvas now actually renders inside notebook pages (was previously a placeholder)
- Notebook versioning with full history, preview, and restore functionality
- Student login workflow with 3-tab auth UI (Teacher/Student/Parent)
- Parent portal with dedicated dashboard, navigation, and parent-student linking
- Calendar recurring events with series/instance editing
- Grade report PDF generation with template selection and batch generation
- Data import/export with CSV drag-and-drop and 5 export types
- 100+ new i18n keys added
- 3 new Prisma models/fields (NotebookPageVersion, ParentStudentLink, CalendarEvent recurrence fields)
- 22 files changed, 3982 insertions, 312 deletions

### Completed Modifications (Round 11)

1. **DrawingCanvas Integration Fix**
   - Replaced placeholder div with actual DrawingCanvas component rendering in notebook pages
   - Passed backgroundType from currentPage.background (with fallback to notebook.notebookType)
   - Passed initialDrawingData from currentPage.drawingData
   - Added handleDrawingSave callback to save drawing data to page + create version
   - Added onExit callback to toggle drawing mode off
   - Added drawing indicator badge in save bar when page has drawingData
   - Added "Edit Drawing" button in save bar when page has drawingData and not in drawing mode
   - Added drawing indicator icon on PageThumbnail for pages with drawingData

2. **Notebook Versioning**
   - New Prisma model: `NotebookPageVersion` (id, pageId, version auto-incrementing, textContent, drawingData, editedBy, editSummary, createdAt)
   - Added versions relation to NotebookPage model
   - API endpoint `/api/notebooks/[id]/pages/[pageId]/versions/route.ts`:
     - GET: List all versions of a page (ordered by version desc)
     - POST: Create a new version from current page content
     - PUT: Restore a specific version (creates pre-restore snapshot + restored version)
     - Max 50 versions per page enforcement (deletes older ones)
   - Version History UI:
     - VersionHistoryDialog component with visual timeline (dots + connectors)
     - Timeline dots: emerald pulsing for current, emerald solid for previewed, gray for others
     - Version entries show: version number, "Current" badge for latest, edit summary badge, timestamp
     - Content preview with HTML stripped to plain text (line-clamp-2)
     - Drawing indicator on versions with drawingData
     - "Restore version" button with AlertDialog confirmation
   - Auto-versioning on save (manual save + drawing save)
   - Version creation is non-critical (try/catch, failures don't block the save)

3. **Student Login Workflow**
   - Enhanced auth-view.tsx with 3-tab login: Teacher/Admin, Student, Parent
   - Student tab: School ID field, simplified interface, info message about accounts created by teachers
   - Parent tab: Heart icon, info message about parent portal, email + password login
   - Animated role icons on left illustration panel
   - Forgot Password link with role-specific demo info
   - Role-specific welcome messages after login
   - Student account creation (single) in settings: name, email, default password, link to student record
   - Bulk student account creation: default password, email domain, student selection with checkboxes
   - STUDENT and PARENT roles added to user role selector

4. **Parent Portal**
   - New Prisma model: `ParentStudentLink` with relations to User, Student, School
   - API routes: `/api/parent-links/route.ts` (GET, POST, DELETE) and `/api/parent-links/[id]/route.ts` (GET, PUT, DELETE)
   - ParentDashboard component with:
     - My Children card listing linked students with class and relationship badges
     - Recent Progress card with student progress overview
     - Upcoming Assessments card
     - Messages from Teachers card
     - Attendance Summary card
     - Calendar card
     - Parent-specific welcome header with violet/purple color scheme
   - Parent navigation: Dashboard, My Children, Messages, Calendar
   - Student self-view with "My Progress" mastery visualization bar
   - Parent Info section for parent users with linked children

5. **Calendar Recurring Events**
   - Updated Prisma schema with recurrence fields: recurrencePattern, recurrenceEnd, parentEventId (self-relation)
   - Updated Calendar Events API (POST/GET/PUT/DELETE) with recurring event support and child event generation
   - Edit series/instance dialog with series/instance edit modes and delete modes
   - Recurring event UI: repeat type, interval, days of week selector, end options
   - Recurring indicator on calendar events

6. **Grade Report PDF Generation**
   - Enhanced Grade Report PDF API: template selection (short/full/custom), student avatars, grades table, eco watermark
   - On-the-fly generation by studentId
   - Reports View enhancements: PDF generation button (FileDown), template selector, batch generate, download history

7. **Data Import/Export**
   - Created Data Import API: CSV import for students/assessments/grades, sample CSV downloads, import summary
   - Enhanced Data Export API: 5 export types (students, assessments, grades, attendance, progress), export history tracking
   - Settings View: import drag-and-drop zone, type selector, progress indicator, import summary, sample downloads

8. **Styling Improvements**
   - Drawing canvas polish: zoom controls (ZoomIn/ZoomOut, 25-200%), better tool styling, larger color swatches, undo/redo animations
   - Notebook detail view: slide-in animation (spring transition), drawing mode toggle with emerald shadow
   - Page thumbnails: hover shadow effect, drawing indicators
   - Global CSS additions: .animate-slide-in, .animate-slide-out, .animate-pulse-dot, .canvas-toolbar, .version-timeline
   - File drop zone (.file-drop-zone), import progress (.import-progress), report preview (.report-preview), eco watermark (.watermark-eco), badge type (.badge-type)

9. **100+ New i18n Keys**
   - Version history keys (18): version_history, version_history_title, version_number, version_current, version_preview, version_restore, etc.
   - Drawing zoom keys: zoom_in, zoom_out
   - Student login keys (50+): student login, parent portal, settings labels
   - Calendar recurring keys (35+): recurring event labels, repeat types, interval
   - Reports PDF keys: template selection, batch generation
   - Import/export keys: drag-and-drop, type selector, progress

10. **3 New Prisma Models / Fields**
    - `NotebookPageVersion` — Version history for notebook pages with auto-incrementing version numbers
    - `ParentStudentLink` — Links between parent users and student records with relationship type
    - CalendarEvent recurrence fields — recurrencePattern, recurrenceEnd, parentEventId self-relation

11. **New API Routes**
    - `/api/notebooks/[id]/pages/[pageId]/versions` — GET (list), POST (create), PUT (restore) page versions
    - `/api/parent-links` — GET (list), POST (create), DELETE (remove) parent-student links
    - `/api/parent-links/[id]` — GET, PUT, DELETE individual parent-student links
    - `/api/data-import` — POST CSV import for students/assessments/grades
    - `/api/calendar-events` — Updated with recurring event support
    - `/api/calendar-events/[id]` — Updated with series/instance edit modes

### Verification Results
- Lint: 0 errors, 0 warnings
- Dev server: Running cleanly on port 3000
- No compilation errors
- 22 files changed, 3982 insertions, 312 deletions
- 4 new files created

### Unresolved Issues / Next Phase Priority (Round 12)

1. **Offline mode**: Notebook content should work offline with service worker
2. **Collaborative editing**: Real-time editing with WebSocket for notebook pages
3. **Mobile responsiveness**: Further testing and optimization on smaller screens
4. **Performance optimization**: Canvas drawing optimization for older tablets
5. **Notification push**: Real-time push notifications via WebSocket instead of polling
6. **Assessment rubrics**: Detailed rubric-based grading system
7. **Curriculum mapping**: Link competencies to curriculum standards
8. **Behavior tracking**: Detailed behavior incident logging and analysis
9. **Attendance analytics**: Advanced attendance patterns and trends
10. **Report scheduling**: Scheduled automatic report generation and email delivery
11. **Multi-school support**: Support for school districts with multiple schools
12. **API rate limiting**: Protect API endpoints from abuse
13. **Audit logging**: Track all user actions for compliance
14. **Data backup**: Automated database backup system

---

### Previous Rounds

<details>
<summary>Round 10 — WYSIWYG, Notifications, Calendar, Student UI</summary>

**Status**: Stable, all features working, pushed to GitHub  
**Version**: v10 (b90ad85)  
**Push Date**: 2025-07-29

1. WYSIWYG Rich Text Editor (contentEditable-based, formatting, color pickers)
2. Page Drag-to-Reorder (HTML5 drag-and-drop, touch support)
3. Enhanced Notification System (DB-backed, type icons, date grouping)
4. Student Role-Based UI (simplified navigation, student dashboard)
5. Calendar Event CRUD (create, edit, delete, week view, mini calendar)
6. Styling Improvements (button press, theme switch, skeleton shimmer)
7. 80+ New i18n Keys
8. 2 New Prisma Models (Notification, CalendarEvent)
9. New API Routes (calendar-events, notifications, page reorder)
</details>

<details>
<summary>Round 9 and earlier</summary>

See git history for details on earlier rounds.
</details>

---

## Task 10 — Mobile Responsiveness + Performance + Data Backup + Styling Polish

**Agent**: mobile-perf-backup-styling
**Date**: 2025-07-29

### Changes Made

1. **Mobile Responsiveness (globals.css)**
   - Added safe area insets for iOS (`.safe-top`, `.safe-bottom`, `.safe-all`)
   - Added canvas no-zoom and no-select utilities (`.canvas-no-zoom`, `.canvas-no-select`)
   - Added mobile scroll container (`.mobile-scroll-x`)
   - Added mobile stack helper (`.mobile-stack`) and full-width inputs (`.mobile-full-width`)
   - Added mobile viewport adjustments: dialog/popover sizing, tab scrollability, card stacking, notebook grid (1 col mobile, 2 col tablet, 3+ desktop), table horizontal scroll, full-width inputs
   - Added tablet-specific adjustments (640px-767px)

2. **Drawing Canvas Performance Optimization**
   - Implemented requestAnimationFrame-based drawing with `scheduleRedraw()`
   - Added Ramer-Douglas-Peucker point simplification (tolerance=2px) for freehand strokes
   - Implemented background layer caching (offscreen canvas for bg + guides)
   - Added debounced auto-save (5s after last stroke) + periodic backup (30s)
   - Added FPS counter (toggle with Activity icon in toolbar)
   - Added GPU acceleration class (`.canvas-gpu`) with `will-change: transform`
   - Fixed initial data loading to use `useState` initializer (no effect needed)

3. **Drawing Canvas Mobile Improvements**
   - Added `isMobile` detection (640px breakpoint)
   - Use Drawer (bottom sheet) on mobile instead of Dialog for clear/save
   - Added `min-touch` (44px) targets to all toolbar buttons
   - Added ARIA labels and `aria-pressed` to all interactive elements
   - Responsive toolbar spacing (`gap-1 sm:gap-2`, `px-2 sm:px-3`)
   - Added `canvas-no-zoom` and `canvas-no-select` to canvas element
   - Responsive slider width (`w-16 sm:w-24`)

4. **Data Backup System**
   - New Prisma model: `Backup` (id, schoolId, filename, size, type, status, notes, createdAt)
   - Added `backups` relation to School model
   - Created `/api/backup/route.ts` API:
     - GET: List backups for a school
     - POST: Create full backup (exports entire DB as JSON) or restore from backup
     - DELETE: Delete a backup
   - Added Backup tab in SettingsView:
     - Create backup button with loading spinner
     - Auto-backup toggle (daily/weekly frequency selector)
     - Last backup timestamp display
     - Backup list with filename, date, size, status, type badges
     - Download, restore, delete actions per backup
     - Restore and delete confirmation dialogs (AlertDialog)

5. **Micro-interaction Animations (globals.css)**
   - `.animate-fade-in-up` — fade in + slide up
   - `.animate-scale-in` — scale from 0.95 to 1
   - `.animate-shake` — error shake animation
   - `.animate-success-check` — success checkmark animation
   - `.hover-lift` — subtle lift on hover (translateY -1px)
   - `.focus-ring` — animated focus ring

6. **Enhanced Print Styles**
   - A4 page size with proper margins
   - Print-specific font sizes (h1: 18pt, h2: 14pt, h3: 12pt, body: 10pt)
   - Hide interactive elements (buttons, nav, aside, etc.)
   - Page break controls (`.page-break-before`, `.page-break-after`, `.page-break-avoid`)
   - Print links with URL display
   - Table styling for print

7. **Dark Mode Polish**
   - Better dark mode borders (`.dark-border`, `.card-dark-border`)
   - Dark mode card shadows (`.dark-shadow`, `.elevated-dark`)
   - Smooth theme transitions (`.theme-transition`)
   - Better contrast ratios for muted text

8. **Accessibility Improvements**
   - Skip-to-content link (`.skip-to-content`)
   - Screen reader only focusable (`.sr-only-focusable`)
   - Modal focus wrapper (`.modal-focus-wrapper`)
   - Live region for dynamic content (`.sr-live-region`)
   - High contrast mode support (forced-colors)
   - Reduced motion support for all animations

9. **i18n Keys Added (35+ new keys in DE and EN)**
   - Backup: title, create, restore, delete, auto, daily, weekly, last, size, status, completed, failed, pending, no_backups, create_confirm, restore_confirm, delete_confirm, creating, restoring, type, type_full, type_incremental, notes, download, created_success, restored_success, deleted_success, error_create, error_restore, error_delete
   - Performance: title, fps
   - Mobile: optimized

### Files Changed
- `src/app/globals.css` — 425+ lines added (mobile, print, dark mode, a11y, canvas perf, animations)
- `src/components/drawing-canvas.tsx` — RAF, point simplification, layer caching, debounced save, FPS counter, mobile drawer, ARIA labels
- `src/components/settings-view.tsx` — Backup tab, backup state, handlers, restore/delete confirmation dialogs
- `src/lib/i18n.ts` — 35+ new keys in DE and EN
- `prisma/schema.prisma` — Backup model + School relation
- `src/app/api/backup/route.ts` — New file (backup CRUD API)

### Verification
- App running on localhost:3000 (200 OK)
- Backup API responding correctly
- Prisma schema pushed successfully

---
Task ID: 11
Agent: offline-pwa-rate-limit
Task: Offline Mode (PWA) + API Rate Limiting

Work Log:
- Created Service Worker at public/sw.js with NetworkFirst (API), CacheFirst (static), navigation fallback, background sync, IndexedDB for pending requests, push notification support
- Created Web App Manifest at public/manifest.json with emerald theme, standalone display, German description
- Generated PWA icons (icon-192.png, icon-512.png) using sharp from SVG with emerald-teal gradient and book icon
- Updated src/app/layout.tsx with manifest metadata, appleWebApp config, Viewport export with themeColor, apple-touch-icon link
- Created src/components/offline-indicator.tsx with OfflineIndicator bar, PWAInstallPrompt card, useServiceWorker hook, OfflineBadge, OfflineSyncManager, showRateLimitToast, RateLimitStatus component
- Created src/lib/offline-cache.ts with localStorage notebook caching (cacheNotebook, getCachedNotebook, queueNotebookEdit, replayQueuedEdits)
- Integrated offline components in src/components/app-layout.tsx (SW registration, OfflineIndicator, PWAInstallPrompt, OfflineSyncManager)
- Created src/lib/rate-limit.ts with in-memory rate limiting (Map-based), configurable presets (auth:5/min, dataRead:60/min, dataWrite:30/min, heavy:10/5min), withRateLimit wrapper, rate limit headers, 429 response, stats endpoint
- Applied rate limiting to /api/auth (auth preset), /api/data-export/csv (heavy), /api/reports/pdf (heavy), /api/data-import (heavy), /api/backup (heavy)
- Created /api/rate-limit-stats API endpoint for admin monitoring
- Updated src/lib/api.ts with 429 handling and RateLimitError interface
- Added RateLimitStatus tab in settings-view.tsx with Shield icon and rose color scheme
- Added 40 i18n keys (32 PWA/offline + 8 rate limit) in DE and EN
- Added offline/PWA/rate-limit CSS styles in globals.css

Stage Summary:
- Full PWA support with offline mode, service worker, install prompt, and offline indicator
- Notebook data cached in localStorage for offline access with queued edits for sync
- API rate limiting with configurable presets protecting auth, data, and heavy operation endpoints
- Rate limit admin monitoring in settings view
- 8 new files, 11 modified files, 0 lint errors

---
Task ID: 16
Agent: homework-announcements
Task: Homework Management + Announcements + Styling

Work Log:
- Added Homework and HomeworkSubmission Prisma models with all required fields and relations
- Added Announcement Prisma model with priority, targetAudience, isPinned, expiresAt fields
- Added relations to School (homeworks, announcements), User (homeworks, announcements), ClassGroup (homeworks, announcements), Subject (homeworks), Student (homeworkSubmissions) models
- Ran db:push successfully to sync database schema
- Created Homework API routes: GET/POST /api/homework, GET/PUT/DELETE /api/homework/[id]
- Created Homework Submission API routes: GET/POST /api/homework/[id]/submissions, PUT/DELETE /api/homework/[id]/submissions/[submissionId]
- Created Announcement API routes: GET/POST /api/announcements, GET/PUT/DELETE /api/announcements/[id]
- Added 'homework' to ViewName type in store.ts
- Added Homework navigation item (BookCheck icon) in teacher, student, and parent nav sections of app-layout.tsx
- Added HomeworkView import and renderView case in app-layout.tsx
- Created homework-view.tsx with full teacher view (create, edit, delete, submissions, grading) and student view (submit, view feedback)
- Implemented color-coded due date badges (overdue=rose, today=amber, upcoming=emerald)
- Implemented homework type badges with icons (FileText, BookOpen, Lightbulb, FlaskConical, Search)
- Implemented submission status tracking (pending, submitted, graded, late) with colored badges
- Implemented quick grading interface with slider for score and feedback textarea
- Added announcement banner component (AnnouncementBanner) in app-layout.tsx
- Banner shows pinned/urgent announcements at top with dismiss button (localStorage remembered)
- Priority-based banner colors (urgent=rose, high=amber, normal=emerald, low=teal)
- Dismiss animation with framer-motion (slide up + fade out)
- Added DashboardAnnouncementsCard component in dashboard-view.tsx
- Announcements card with expand/collapse for long content, priority indicators, pin icon
- Create announcement dialog for admin/teacher roles
- Added DashboardHomeworkCard component in dashboard-view.tsx
- Homework due soon card showing upcoming homework within 7 days
- Both cards link to homework view for full details
- Added 110+ i18n keys for homework and announcements (DE + EN) in i18n.ts
- Added global CSS classes: .announcement-banner, .homework-card, .priority-urgent/high/normal/low, .due-overdue/today/upcoming
- All components use 44px minimum touch targets for tablet
- ESLint passes with 0 errors

Stage Summary:
- Full homework management CRUD with teacher/student views
- Homework submission workflow with grading interface
- Announcement system with priority-based banner and dashboard card
- 8 new API route files, 1 new view component, 2 new dashboard sub-components
- 110+ i18n keys added for DE and EN
- Global CSS classes for homework and announcement styling
- 0 lint errors

---
Task ID: 15
Agent: self-assessment-portfolio
Task: Student Self-Assessment + Portfolio System + Learning Goals

Work Log:
- Added SelfAssessment, LearningGoal, PortfolioEntry Prisma models to schema.prisma
- Added relations to School (selfAssessments, learningGoals, portfolioEntries), Student (selfAssessments, learningGoals, portfolioEntries), Competency (selfAssessments, learningGoals, portfolioEntries), ClassGroup (selfAssessments) models
- Ran db:push successfully - all three new tables created
- Created Self-Assessment API routes: GET/POST /api/self-assessments, GET/PUT/DELETE /api/self-assessments/[id]
- Created Learning Goals API routes: GET/POST /api/learning-goals, GET/PUT/DELETE /api/learning-goals/[id]
- Created Portfolio API routes: GET/POST /api/portfolio, GET/PUT/DELETE /api/portfolio/[id]
- Added 60+ i18n keys for both DE and EN covering self-assessment, learning goals, and portfolio
- Added Self-Assessment UI section in student-detail-view.tsx: list view, radar comparison chart (self vs teacher), competency selector, slider for mastery level (1-6), confidence selector (1-5), reflection/evidence text areas, gap analysis badges, create/edit/delete dialogs
- Added Learning Goals UI section in student-detail-view.tsx: goal cards with progress bars, status tracking (active/completed/abandoned), deadline countdown, celebration animation on completion, create/edit/delete dialogs, competency linking
- Created portfolio-view.tsx component: grid view with entry cards, timeline view, type-based filtering (artwork/writing/project/presentation/achievement/reflection), tag filtering, search, public/private toggle, create/edit/delete dialogs
- Added 'portfolio' to ViewName type in store.ts
- Added Portfolio navigation in app-layout.tsx: Briefcase icon in Teaching section, student nav section, renderView case
- Added PortfolioView import in app-layout.tsx
- Ran bun run lint: no errors

Stage Summary:
- Three new Prisma models (SelfAssessment, LearningGoal, PortfolioEntry) with full CRUD API routes
- Self-Assessment section in student-detail-view with radar chart comparison, gap analysis, dialog CRUD
- Learning Goals section in student-detail-view with progress tracking, deadline countdown, celebration animation
- Portfolio view as standalone page with grid/timeline views, type/tag filtering, public/private toggle
- Portfolio nav item with Briefcase icon added to Teaching section and Student nav
- 60+ new i18n keys in both DE and EN

---
Task ID: 17
Agent: timetable-resources
Task: Timetable Management + Digital Resource Library

Work Log:
- Added TimetableSlot model to Prisma schema (dayOfWeek, period, subjectId, teacherId, roomId, startTime, endTime, isBreak) with unique constraint on (classGroupId, dayOfWeek, period)
- Added Resource model to Prisma schema (title, description, resourceType, url, content, subjectId, classGroupId, gradeLevel, tags JSON, isPublic, downloadCount) with index on (schoolId, resourceType)
- Added timetableSlots and resources relations to School, User, ClassGroup, Subject models
- Ran db:push to sync database successfully
- Created /api/timetable/route.ts (GET list, POST single + batch create)
- Created /api/timetable/[id]/route.ts (GET, PUT, DELETE soft delete)
- Created /api/resources/route.ts (GET list with filters, POST create)
- Created /api/resources/[id]/route.ts (GET, PUT, DELETE soft delete, incrementDownload)
- Created timetable-view.tsx: weekly grid (Mon-Fri, Period 1-8), color-coded by subject, drag-and-drop to move lessons, click to add/edit, break rows, time display, print button, class selector
- Created resource-library-view.tsx: grid view with resource cards, 7 type filters, subject filter, search, create/edit dialog, preview panel, download counter, public/private toggle, favorite/bookmark (localStorage)
- Added ~70 i18n keys for both DE and EN covering timetable and resources
- Added nav.timetable and nav.resources i18n keys
- Updated store.ts ViewName type with 'timetable' and 'resources'
- Updated app-layout.tsx: added Clock/Library icons, imports, nav items, renderView cases

Stage Summary:
- 2 new Prisma models: TimetableSlot, Resource with 4 relation updates
- 4 new API route files with full CRUD
- 2 new major UI components: weekly timetable grid with drag-and-drop, resource library with filtering/favorites/preview
- 2 new navigation entries (Timetable with Clock icon, Resources with Library icon)
- ~70 new i18n keys for both DE and EN
- Lint passes clean

---
Task ID: 18
Agent: analytics-styling-accessibility
Task: Advanced Analytics + Styling Polish + Accessibility

Work Log:
- Enhanced analytics-view.tsx with tab-based navigation (School Overview, Student Performance, Class Comparison, Teacher Performance, Predictive, Export)
- Added School Overview: total students/classes/teachers/competencies stats, student-teacher ratio, competency coverage pie chart, subject mastery bar chart, activity heatmap
- Added Student Performance: mastery histogram, progress over time (area chart), subject comparison (horizontal bar), grade trend (composed chart), self-assessment vs teacher scatter plot, mastery distribution donut
- Added Class Comparison: radar chart comparing classes across 5 dimensions (mastery/attendance/engagement/progress/behavior), class comparison bar chart, competency coverage heatmap with progress bars, ranking table
- Added Teacher Performance: assessments/progress per teacher bar chart, teacher stats table with improvement rate and notebook usage
- Added Predictive Analytics: students at risk with risk summary cards and filterable table, students excelling with improvement trajectory, areas needing attention (bottom competencies)
- Added Export Options: PNG chart export, CSV data export, print report
- Enhanced analytics API route to return: totalClasses, totalTeachers, totalCompetencies, competencyCoveragePct, subjectMasteryAvg, teacherPerformance, selfVsTeacherAgg, gapAnalysis, excellingStudents, classRadarData
- Added new TypeScript types in api.ts: AnalyticsSubjectMasteryPoint, AnalyticsTeacherPerformancePoint, AnalyticsSelfVsTeacherAgg, AnalyticsGapAnalysisPoint, AnalyticsExcellingStudent, AnalyticsClassRadarPoint
- Added CSS classes to globals.css: chart-container, stat-card, heatmap-cell, analytics-dashboard, loading-skeleton-chart, predictive-badge (risk/excel/attention variants), analytics-tab, export-btn, chart-sr-desc
- Added accessibility features: skip-to-content link, keyboard shortcuts dialog (Alt+1-6), ARIA labels on all interactive elements, ARIA roles on tabs/tabpanels, live regions for dynamic content, screen reader descriptions for charts, table headers with scope attributes, 44px minimum touch targets, prefers-reduced-motion support via useReducedMotion hook
- Added count-up animation hook (useCountUp) that respects reduced motion
- Added StatCard component with gradient backgrounds and hover effects
- Added EmptyState component for consistent empty state illustrations
- Added ChartSkeleton component for loading states
- Added 70+ new i18n keys for both DE and EN covering analytics sections, accessibility, and export options
- Fixed API route bug: replaced nested await inside .then() callback with proper Promise chain
- Refactored teacher improvement calculation to batch DB queries instead of N+1 pattern
- Dark mode polish: all new chart containers, stat cards, and tabs have proper dark mode styles
- Lint passes clean

Stage Summary:
- Complete analytics dashboard with 6 tabbed sections and advanced visualizations
- New API data: school overview counts, subject mastery, teacher performance, self-assessment gap analysis, excelling students, class radar data
- 70+ new i18n keys (DE + EN) for analytics, accessibility, and exports
- Full accessibility: skip-to-content, keyboard shortcuts, ARIA labels, reduced motion, 44px touch targets
- New CSS utilities: chart-container, stat-card, heatmap-cell, predictive-badge, analytics-tab, export-btn
- Production-ready with dark mode support and responsive design

---
Task ID: 21
Agent: performance-styling-onboarding
Task: Performance Optimization + Comprehensive Styling Polish + Onboarding Tour Update

Work Log:
- Created src/lib/cache.ts with in-memory TTL-based cache utility (getCached, invalidateCache, invalidateCachePattern, clearCache, CACHE_TTL constants)
- Added dynamic imports (next/dynamic) for heavy components: AnalyticsView, CalendarView, NotebooksView, DrawingView with loading skeletons
- Used ssr: false for DrawingView (canvas component)
- Added glass effect header (backdrop-blur-xl) to app-layout.tsx
- Added notification bell bounce animation (framer-motion rotate keyframes)
- Added theme toggle with smooth transition animation (framer-motion spring)
- Added better breadcrumb separator with ChevronRight icon
- Added CountUp animation component to dashboard-view.tsx for stat numbers (0 → actual value with ease-out cubic)
- Added card-hover-lift class to dashboard stat cards for hover lift effect
- Added card-hover-lift class to all major view cards: classes, progress-entries, assessments, grading, attendance, lesson-plans, reports, settings
- Added comprehensive CSS animations in globals.css: card-hover-lift, gradient-separator, badge-glow variants, stagger-entrance, success-bounce, tour-highlight-ring, theme-transition, custom-scrollbar, attendance grid cells, grade color coding, glass-card, min-touch
- Updated onboarding-tour.tsx from 14 to 24 steps covering all features
- Added progress bar to onboarding tour
- Added "Don't show again" checkbox with localStorage persistence
- Added celebration animation (confetti burst) on tour completion
- Added step number badge in onboarding tour
- Added Previous button navigation
- Added isDontShowAgain() export function
- Added 100+ new i18n keys for DE and EN: onboarding.step_1 through step_24 (title + desc), onboarding.celebration, onboarding.complete, onboarding.previous, onboarding.dont_show_again, onboarding.restart_tour

Stage Summary:
- Performance: Dynamic imports for 4 heavy components (AnalyticsView, CalendarView, NotebooksView, DrawingView) with loading skeletons
- Cache: Created src/lib/cache.ts with TTL-based in-memory cache utility with configurable TTLs
- Styling: Added 15+ new CSS utility classes and animations in globals.css
- Cards: Applied card-hover-lift hover effect across all views (10 views)
- Dashboard: CountUp animation on stat numbers, card-hover-lift on stat cards
- App Layout: Glass header, notification bell bounce, theme toggle animation, breadcrumb separator
- Onboarding: Expanded from 14 to 24 steps, added progress bar, celebration, don't-show-again, previous button
- i18n: 100+ new keys for DE and EN covering all onboarding steps and UI

---
Task ID: 19
Agent: peer-assessment-emergency-events
Task: Peer Assessment + Emergency Contacts + School Events

Work Log:
- Added 4 new Prisma models: PeerAssessment, EmergencyContact, SchoolEvent, EventRegistration
  - PeerAssessment: schoolId, assessorId, assessedId, competencyId, classGroupId, assessmentType, level (1-6), comment, rubricId, isAnonymous
  - EmergencyContact: schoolId, studentId, name, relationship, phone, phoneAlt, email, address, isPrimary, priority
  - SchoolEvent: schoolId, title, eventType, startDate, endDate, location, organizerId, classGroupId, isAllSchool, requiresRegistration, maxParticipants
  - EventRegistration: eventId, userId, status (registered/cancelled/attended)
- Added relations to School, User, Student, Competency, ClassGroup, Rubric models
- Ran db:push successfully to sync database
- Created 6 API routes:
  - Peer Assessments: GET/POST /api/peer-assessments, GET/PUT/DELETE /api/peer-assessments/[id]
  - Emergency Contacts: GET/POST /api/emergency-contacts, GET/PUT/DELETE /api/emergency-contacts/[id]
  - School Events: GET/POST /api/school-events, GET/PUT/DELETE /api/school-events/[id]
  - Event Registration: POST/PUT /api/school-events/[id]/register
- Added 90+ new i18n keys (DE and EN) for peer assessment, emergency contacts, school events
- Updated student-detail-view.tsx:
  - Peer Assessment section with 3-column radar chart (peer/teacher/self comparison)
  - Average peer rating per competency display
  - Peer assessment list with type badges, anonymous indicator, comments
  - Create peer assessment dialog with type, competency, level slider, comment, anonymous toggle
  - Emergency Contacts section with contact cards, primary indicator, priority ordering
  - Quick-call button, edit/delete functionality
  - Emergency contact add/edit dialog
- Updated dashboard-view.tsx:
  - DashboardSchoolEventsCard component with event type icons (assembly=Users, field_trip=MapPin, sports_day=Trophy, etc.)
  - Register/Cancel buttons for events requiring registration
  - Event type color coding
  - Upcoming events display with date, location, all-school badge
- Updated settings-view.tsx:
  - EmergencyContactsManager component with searchable contact list
  - Emergency contacts tab in settings
  - Print list and CSV export buttons
  - Add/edit/delete contact dialog
  - Star icon for primary contacts

Stage Summary:
- 4 new Prisma models (PeerAssessment, EmergencyContact, SchoolEvent, EventRegistration)
- 6 API route files with full CRUD operations
- 90+ i18n keys added for DE and EN
- Peer Assessment UI in student detail with 3-column radar comparison chart
- Emergency Contacts UI in student detail and settings
- School Events card on dashboard with registration functionality

---
Task ID: 20
Agent: multi-tenancy-email-export
Task: School Branding + Email Notifications + Data Export Enhancement

Work Log:
- Updated Prisma schema with School branding fields (logoUrl, primaryColor, secondaryColor, accentColor, fontFamily, customCss, motto, websiteUrl, emailDomain, address, phone) and 2 new models (EmailTemplate, EmailLog)
- Added emailTemplates and emailLogs relations to School model
- Ran db:push successfully to update database
- Enhanced School API route to accept and return branding fields in GET and PUT
- Seeded 5 default email templates on school creation (weekly_report, assessment_reminder, behavior_alert, attendance_notice, welcome)
- Created EmailTemplate API routes (GET/POST list, GET/PUT/DELETE individual)
- Created Email Send API route (/api/email-templates/send) with variable replacement and email logging
- Created EmailLog API route (/api/email-logs) with status counts
- Updated School interface and updateSchool function in api.ts with branding fields
- Added 80+ new i18n keys for DE and EN (branding.*, email.*, export.*)
- Updated globals.css with CSS custom properties (--brand-primary, --brand-secondary, --brand-accent, --brand-font)
- Updated app-layout.tsx to dynamically load school branding and apply CSS variables, logo in sidebar header, school name, motto in sidebar footer
- Added "Branding" and "Email" tabs to settings-view.tsx
- Branding tab: logo URL input, color pickers for primary/secondary/accent colors, font family selector, motto input, website/email domain/address/phone inputs, custom CSS textarea, live preview panel, save/reset buttons
- Email tab: email templates list with create/edit/delete/preview, email template dialog with variable placeholders, email preview dialog with test email send, email settings (SMTP config, frequency, toggle switches), email log viewer with status filter and counts
- Enhanced data export UI with format selector (CSV/JSON/PDF), date range filters, progress indicator, export history with format badges, better export cards with descriptions

Stage Summary:
- 2 new Prisma models (EmailTemplate, EmailLog) + 11 branding fields on School model
- 4 new API route files (email-templates, email-templates/[id], email-templates/send, email-logs)
- Enhanced schools route with branding fields and default template seeding
- 80+ i18n keys added for branding, email, and export (DE + EN)
- CSS custom properties for dynamic branding (--brand-primary, --brand-secondary, --brand-accent, --brand-font)
- Dynamic branding application in app-layout.tsx (logo, school name, motto, colors, font)
- Full branding UI in settings with color picker, font selector, preview panel
- Full email template management with CRUD, variable placeholders, preview, test send
- Email settings with SMTP config, frequency, toggle switches
- Email log viewer with status filter and delivery statistics
- Enhanced data export with format selector, date filters, progress indicator
- All lint checks pass with 0 errors

---
Task ID: 23
Agent: qr-gamification-polish
Task: QR Code System + Gamification Badges + Styling Polish

Work Log:
- Created QR Code generation utility (src/lib/qrcode.ts) with canvas-based QR encoder
  - Supports student, class, attendance, and event QR code types
  - Generates base64 PNG images via canvas API
  - Download utility for saving QR codes
- Updated Prisma schema with Badge and StudentBadge models
  - Badge: id, schoolId, name, description, icon, color, category, requirementType, requirementValue, isAuto
  - StudentBadge: id, schoolId, studentId, badgeId, awardedAt, awardedBy, notes
  - Added relations to School, Student, User models
- Created Badge API routes:
  - /api/badges/route.ts — GET list, POST create
  - /api/badges/[id]/route.ts — GET, PUT, DELETE
  - /api/student-badges/route.ts — GET list, POST award
  - /api/student-badges/[id]/route.ts — GET, DELETE
  - /api/badge-check/route.ts — POST check and auto-award
  - /api/badge-seed/route.ts — POST seed default badges
  - /api/badge-progress/route.ts — GET badge progress for student
- Created badge-check.ts auto-award utility with 10 default badges:
  - Perfect Attendance, Competency Master, Progress Pioneer, Behavior Star
  - Notebook Champion, Drawing Artist, Homework Hero, Team Player
  - Goal Achiever, Eco Warrior
- Added i18n keys for QR and badges (68 keys total, DE + EN)
- Added global CSS styles for badges, QR, celebrations, quick stats
- Added QR Code UI to student-detail-view.tsx:
  - "Show QR Code" button in header
  - QR code dialog with download button
  - Badge collection section with earned/unearned badges
  - Badge detail dialog with progress tracking
  - Quick stats bar with badges count
  - Icon map for badge icons
- Added QR Code UI to classes-view.tsx:
  - "Class QR" button in class header
  - QR code dialog with download button
- Added QR Attendance mode to attendance-view.tsx:
  - New "QR Attendance" tab in attendance view
  - QR code generation with 5-minute auto-refresh
  - Timer bar showing refresh countdown
  - Real-time check-in status display
  - Download and manual refresh buttons
- Added Badge management to settings-view.tsx:
  - New "Badges" tab with Trophy icon
  - Badge statistics (total, earned, auto-awarded)
  - Badge list with categories and awarded counts
  - Create badge dialog with icon, color, category, requirement config
  - Award badge manually dialog with student/badge selector
  - Delete badge functionality
- Added API client functions in api.ts for badge operations
- All lint checks pass with 0 errors
- App compiles and runs successfully (HTTP 200)

Stage Summary:
- Complete QR Code system with generation, display, and download
- Full gamification badge system with 10 default badges, auto-award logic, progress tracking
- Badge management in settings with CRUD operations
- QR attendance mode with auto-refresh and real-time tracking
- 68 new i18n keys (DE + EN) for QR and badges
- CSS styles for badge circles, celebrations, QR cards, attendance display, quick stats
- No lint errors, app compiles and runs


---
Task ID: 24
Agent: round24-student-transportation-health-records-seating-chart
Task: Complete Student Transportation + Health Records + Interactive Seating Chart
Date: Round 24 complete

Work Log:
- Reviewed existing work from previous agents. Parts 1 (StudentTransport) and 2 (HealthRecord) were already fully implemented:
  - StudentTransport Prisma model exists with all fields (transportType, routeNumber, stopName, pickupTime, dropoffTime, driverName, driverPhone, distanceKm, notes)
  - HealthRecord Prisma model exists with all fields (bloodType, allergies, medications, conditions, doctorName, doctorPhone, insuranceNumber, insuranceProvider, lastCheckup, isConfidential)
  - API routes exist: /api/student-transport/route.ts, /api/student-transport/[id]/route.ts, /api/health-records/route.ts, /api/health-records/[id]/route.ts
  - Seating API route exists: /api/classes/[id]/seating/route.ts
  - Transportation UI section in student-detail-view.tsx with transport cards, type icons (Bus, Car, Bike, Walk), route/stop info, times, driver info, quick-call button
  - Health Records UI section in student-detail-view.tsx with blood type badge, allergy warnings, medication list, doctor info, confidential toggle
  - All i18n keys for transport.* and health.* already present in both de and en
  - Seating i18n keys already present in both de and en
- Part 3: Added Interactive Seating Chart visual grid to classes-view.tsx:
  - Added new imports: useRef, Shuffle, Printer, Eraser, Columns3, Rows3, Move
  - Added apiGet/apiPut imports from @/lib/api
  - Added seating chart state variables: seatingChartOpen, seatingRows, seatingCols, seatingGrid, seatingSaving, drag/touch handlers
  - Added seating chart helper functions: loadSeatingChart, saveSeatingChart, randomizeSeating, clearSeating, handleSeatingDragStart/Over/Drop/End, touch handlers, handleResizeGrid, handlePrintSeating, getStudentById
  - Added "Visual Seating" button next to existing "Seating Order" button in student roster header
  - Added full visual seating chart card with:
    - Configurable rows/columns (1-10 each) with +/- buttons
    - Save, Randomize, Clear, Print action buttons (44px min touch targets)
    - Drag-to-rearrange hint with Move icon
    - Visual grid with column labels (A, B, C...) and row labels (1, 2, 3...)
    - Student avatar cells with initials, first/last name, gradient backgrounds
    - Empty seat cells with Armchair icon and dashed border
    - Drag-and-drop support (HTML5 drag API) with visual feedback (ring, scale, opacity)
    - Touch-friendly drag support (onTouchStart/onTouchEnd) for tablets
    - Teacher desk indicator at bottom of grid
    - ARIA labels for accessibility
    - Print functionality opens a new window with formatted table
    - Empty state when no students are enrolled
  - Added 'seating.teacher_desk' i18n key in both de and en
- Verification Results:
  - bun run db:push: Database already in sync
  - bun run lint: 0 errors
  - Dev server running without errors