Initial commit: Phase 1 – Projektstruktur, DB-Schema, Core-API

- FastAPI-Backend mit vollständiger ABS v2.x API-Kompatibilität
- SQLAlchemy-Models: User, Library, LibraryItem, BookFile, Chapter,
  Podcast, PodcastEpisode, MediaProgress, Bookmark, PlaybackSession
- Auth: JWT-Login (/login, /logout, /api/authorize)
- Library + Items Endpoints inkl. camelCase ABS-Response-Format
- HLS-Streaming via FFmpeg (POST /api/items/:id/play, Session-Sync)
- Me/Progress Endpoints + Lesezeichen
- User-Management + Server-Settings (Admin)
- Library-Scanner (MP3/WAV Discovery, Hintergrund-Task)
- File Watcher (watchdog, 30s Debounce)
- Matching-Skelett (MusicBrainz, OpenLibrary, Google Books – Phase 5)
- Docker-Setup: backend (Python 3.12+FFmpeg), frontend (React/Vite),
  nginx Reverse-Proxy auf Port 3000
- setup.sh: Installiert Docker auf Debian/Ubuntu, richtet .env ein

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

docker-compose.yml

@@ -0,0 +1,36 @@
+services:
+  backend:
+    build: ./backend
+    container_name: audiolib-backend
+    restart: unless-stopped
+    env_file: .env
+    volumes:
+      - ./data:/app/data
+      - ${AUDIOFILES_PATH:-./audiofiles}:/audiofiles:ro
+    expose:
+      - "8000"
+    depends_on: []
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  frontend:
+    build: ./frontend
+    container_name: audiolib-frontend
+    restart: unless-stopped
+    expose:
+      - "80"
+
+  nginx:
+    image: nginx:1.25-alpine
+    container_name: audiolib-nginx
+    restart: unless-stopped
+    ports:
+      - "${SERVER_PORT:-3000}:80"
+    volumes:
+      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
+    depends_on:
+      - backend
+      - frontend