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/cache.py

@@ -6,12 +6,38 @@ import json
 from pathlib import Path
 from typing import Any, Dict, Optional
 
+from cache.keys import PRESCAN_AUDIO_PREFIX, PRESCAN_VIDEO_PREFIX, CONFIRMED_METADATA_PREFIX
+
 CACHE_DIR = Path("/app/cache")
 CACHE_FILE = CACHE_DIR / "api_cache.db"
 MAX_ENTRIES = 10000
 DEFAULT_TTL = 86400  # 24 Stunden
 
 
+def is_prescan_key(key: str) -> bool:
+    """Prüfe ob Key ein Pre-Scan-Key ist."""
+    return key.startswith(PRESCAN_AUDIO_PREFIX) or key.startswith(PRESCAN_VIDEO_PREFIX)
+
+
+def is_confirmed_key(key: str) -> bool:
+    """Prüfe ob Key ein bestätigter Metadaten-Key ist."""
+    return key.startswith(CONFIRMED_METADATA_PREFIX)
+
+
+def get_cache_category(key: str) -> str:
+    """Ermittle Kategorie eines Cache-Keys."""
+    if is_prescan_key(key):
+        return "prescan"
+    elif is_confirmed_key(key):
+        return "confirmed"
+    elif key.startswith("tmdb:"):
+        return "tmdb"
+    elif key.startswith("musicbrainz:"):
+        return "musicbrainz"
+    return "other"
+
+
+
 def init_cache() -> None:
     """Initialisiere Cache-DB."""
     CACHE_DIR.mkdir(parents=True, exist_ok=True)