feat(ui): SoC Refactoring & Config Validation

- Theme Context ausgelagert (ThemeContext.tsx + useDarkMode.ts)
- Config Validation mit TMDB-API-Key Pflicht (config_validation.py)
- Cache Key Centralization (cache/keys.py)
- CD-Ripping mit abcde implementiert (Worker)
- Docker Compose mit Healthchecks & LOG_LEVEL
- ROADMAP.md & SAVEPOINT.md aktualisiert

docker/api/prescan.py

@@ -8,6 +8,7 @@ from clients.tmdb import TMDBClient
 from clients.musicbrainz import MusicBrainzClient
 from clients.thetvdb import TheTVDBClient
 from cache import get, set
+from cache.keys import generate_prescan_key
 from config import settings
 
 
@@ -146,7 +147,7 @@ class PreScan:
     def _scan_audio(self, device_path: str, toc: Dict) -> PreScanResult:
         """Pre-Scan für Audio-CD."""
         # Cache-Key
-        cache_key = f"prescan:audio:{device_path}"
+        cache_key = generate_prescan_key(device_path, is_audio=True)
         cached = get(cache_key)
         if cached:
             return PreScanResult(**cached)
@@ -214,7 +215,7 @@ class PreScan:
     def _scan_video(self, device_path: str, toc: Dict) -> PreScanResult:
         """Pre-Scan für DVD/Blu-ray."""
         # Cache-Key
-        cache_key = f"prescan:video:{device_path}"
+        cache_key = generate_prescan_key(device_path, is_audio=False)
         cached = get(cache_key)
         if cached:
             return PreScanResult(**cached)