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>

backend/app/schemas/library.py

@@ -0,0 +1,67 @@
+from pydantic import BaseModel, ConfigDict
+from pydantic.alias_generators import to_camel
+from datetime import datetime
+
+
+class LibraryFolder(BaseModel):
+    model_config = ConfigDict(alias_generator=to_camel, populate_by_name=True)
+    id: str
+    full_path: str
+    library_id: str = ""
+    added_at: int = 0
+
+
+class LibrarySettings(BaseModel):
+    model_config = ConfigDict(alias_generator=to_camel, populate_by_name=True)
+    cover_aspect_ratio: int = 1
+    disable_watcher: bool = False
+    skip_matching_media_with_asin: bool = False
+    skip_matching_media_with_isbn: bool = False
+    auto_scan_cron_expression: str = ""
+    audio_files_global_include: list[str] = []
+    audio_files_global_exclude: list[str] = []
+    metadata_precision: int = 10
+    hide_single_book_series: bool = False
+    only_show_later_books_in_continue_series: bool = False
+    metadata_providers: list[str] = ["google", "audible"]
+    prefer_matched_metadata: bool = False
+    disable_embed_covers: bool = False
+    best_books_matching: bool = False
+
+
+class LibraryOut(BaseModel):
+    model_config = ConfigDict(alias_generator=to_camel, populate_by_name=True)
+
+    id: str
+    name: str
+    folders: list[LibraryFolder] = []
+    display_order: int = 1
+    icon: str = "database"
+    media_type: str = "book"
+    provider: str = "google"
+    settings: LibrarySettings = LibrarySettings()
+    created_at: int = 0  # ABS nutzt Unix-Timestamps in ms
+    last_update: int = 0
+
+
+class LibraryCreate(BaseModel):
+    name: str
+    folders: list[dict]
+    media_type: str = "book"
+    icon: str = "database"
+    provider: str = "google"
+
+
+class LibraryUpdate(BaseModel):
+    name: str | None = None
+    folders: list[dict] | None = None
+    settings: dict | None = None
+
+
+class LibraryItemsResponse(BaseModel):
+    model_config = ConfigDict(alias_generator=to_camel, populate_by_name=True)
+
+    results: list
+    total: int
+    limit: int
+    page: int