fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.content.yml

@@ -0,0 +1,135 @@
+# BreakPilot Content Service Stack
+# Usage: docker-compose -f docker-compose.yml -f docker-compose.content.yml up -d
+
+services:
+  # MinIO Object Storage (S3-compatible)
+  minio:
+    image: minio/minio:latest
+    container_name: breakpilot-pwa-minio
+    ports:
+      - "9000:9000"      # API
+      - "9001:9001"      # Console
+    environment:
+      MINIO_ROOT_USER: minioadmin
+      MINIO_ROOT_PASSWORD: minioadmin123
+    command: server /data --console-address ":9001"
+    volumes:
+      - minio_data:/data
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
+      interval: 30s
+      timeout: 20s
+      retries: 3
+    networks:
+      - breakpilot-pwa-network
+    restart: unless-stopped
+
+  # Content Service Database (separate from main DB)
+  content-db:
+    image: postgres:16-alpine
+    container_name: breakpilot-pwa-content-db
+    ports:
+      - "5433:5432"
+    environment:
+      POSTGRES_USER: breakpilot
+      POSTGRES_PASSWORD: breakpilot123
+      POSTGRES_DB: breakpilot_content
+    volumes:
+      - content_db_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U breakpilot -d breakpilot_content"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    networks:
+      - breakpilot-pwa-network
+    restart: unless-stopped
+
+  # Content Service API
+  content-service:
+    build:
+      context: ./backend/content_service
+      dockerfile: Dockerfile
+    container_name: breakpilot-pwa-content-service
+    ports:
+      - "8002:8002"
+    environment:
+      - CONTENT_DB_URL=postgresql://breakpilot:breakpilot123@content-db:5432/breakpilot_content
+      - MINIO_ENDPOINT=minio:9000
+      - MINIO_ACCESS_KEY=minioadmin
+      - MINIO_SECRET_KEY=minioadmin123
+      - MINIO_SECURE=false
+      - MINIO_BUCKET=breakpilot-content
+      - CONSENT_SERVICE_URL=http://consent-service:8081
+      - JWT_SECRET=${JWT_SECRET:-your-super-secret-jwt-key-change-in-production}
+      - MATRIX_HOMESERVER=${MATRIX_HOMESERVER:-http://synapse:8008}
+      - MATRIX_ACCESS_TOKEN=${MATRIX_ACCESS_TOKEN:-}
+    depends_on:
+      content-db:
+        condition: service_healthy
+      minio:
+        condition: service_healthy
+    networks:
+      - breakpilot-pwa-network
+    restart: unless-stopped
+
+  # H5P Interactive Content Service
+  h5p-service:
+    build:
+      context: ./h5p-service
+      dockerfile: Dockerfile
+    container_name: breakpilot-pwa-h5p
+    ports:
+      - "8003:8080"
+    environment:
+      - H5P_STORAGE_PATH=/h5p-content
+      - CONTENT_SERVICE_URL=http://content-service:8002
+    volumes:
+      - h5p_content:/h5p-content
+    networks:
+      - breakpilot-pwa-network
+    restart: unless-stopped
+
+  # AI Content Generator Service
+  ai-content-generator:
+    build:
+      context: ./ai-content-generator
+      dockerfile: Dockerfile
+    container_name: breakpilot-pwa-ai-generator
+    ports:
+      - "8004:8004"
+    environment:
+      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+      - YOUTUBE_API_KEY=${YOUTUBE_API_KEY:-}
+      - H5P_SERVICE_URL=http://h5p-service:8080
+      - CONTENT_SERVICE_URL=http://content-service:8002
+      - SERVICE_HOST=0.0.0.0
+      - SERVICE_PORT=8004
+      - MAX_UPLOAD_SIZE=10485760
+      - MAX_CONCURRENT_JOBS=5
+      - JOB_TIMEOUT=300
+    volumes:
+      - ai_generator_temp:/app/temp
+      - ai_generator_uploads:/app/uploads
+    depends_on:
+      - h5p-service
+      - content-service
+    networks:
+      - breakpilot-pwa-network
+    restart: unless-stopped
+
+volumes:
+  minio_data:
+    driver: local
+  content_db_data:
+    driver: local
+  h5p_content:
+    driver: local
+  ai_generator_temp:
+    driver: local
+  ai_generator_uploads:
+    driver: local
+
+networks:
+  breakpilot-pwa-network:
+    external: true