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/worker/ripping.py

@@ -103,6 +103,16 @@ def detect_disc_type(device_path: str) -> str:
         return "unknown"
 
 
+def check_abcde_installed() -> bool:
+    """Prüft, ob abcde installiert ist."""
+    return shutil.which("abcde") is not None
+
+
+def check_cdparanoia_installed() -> bool:
+    """Prüft, ob cdparanoia installiert ist."""
+    return shutil.which("cdparanoia") is not None
+
+
 @celery_app.task(bind=True, name="worker.ripping.rip_dvd")
 def rip_dvd(self, device_path: str, disc_id: str) -> dict:
     """Rippt eine DVD mit HandBrake."""
@@ -133,3 +143,83 @@ def rip_bluray(self, device_path: str, disc_id: str) -> dict:
     output_path = f"{output_dir}/bluray_{disc_id}.mkv"
     
     return run_handbrake(device_path, output_path)
+
+
+@celery_app.task(bind=True, name="worker.ripping.rip_cd")
+def rip_cd(self, device_path: str, disc_id: str) -> dict:
+    """Rippt eine CD mit abcde."""
+    if not check_abcde_installed():
+        return {
+            "status": "error",
+            "error": "abcde ist nicht installiert. Installiere abcde und cdparanoia für CD-Ripping."
+        }
+    
+    if not check_cdparanoia_installed():
+        return {
+            "status": "error",
+            "error": "cdparanoia ist nicht installiert. Installiere abcde und cdparanoia für CD-Ripping."
+        }
+    
+    output_dir = f"/output/cd/{disc_id}"
+    os.makedirs(output_dir, exist_ok=True)
+    
+    try:
+        cmd = [
+            "abcde",
+            "-d", device_path,
+            "-o", "flac",
+            "-b",
+            "-t", "1",
+            "-a", "default",
+            "-x",
+            "-o", output_dir
+        ]
+        
+        process = subprocess.Popen(
+            cmd,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            text=True,
+            bufsize=1
+        )
+        
+        for line in process.stdout:
+            self.send_task(
+                "worker.ripping.update_progress",
+                kwargs={
+                    "progress": 50,
+                    "status": "ripping",
+                    "message": f"Rippe CD: {line.strip()}"
+                }
+            )
+        
+        process.wait()
+        
+        if process.returncode == 0:
+            # MusikBrainz Lookup (via abcde's post-read)
+            self.send_task(
+                "worker.ripping.update_progress",
+                kwargs={
+                    "progress": 90,
+                    "status": "ripping",
+                    "message": "MusikBrainz Lookup läuft..."
+                }
+            )
+            
+            return {
+                "status": "success",
+                "output_dir": output_dir,
+                "return_code": process.returncode
+            }
+        else:
+            return {
+                "status": "error",
+                "error": f"abcde failed with code {process.returncode}",
+                "return_code": process.returncode
+            }
+    
+    except Exception as e:
+        return {
+            "status": "error",
+            "error": str(e)
+        }

docker/worker/tasks.py

@@ -1,6 +1,6 @@
 import os
 from celery_app import celery_app
-from ripping import rip_dvd, rip_bluray, detect_disc_type
+from ripping import rip_dvd, rip_bluray, rip_cd, detect_disc_type
 
 
 @celery_app.task(bind=True, name="worker.tasks.rip_disc")
@@ -12,11 +12,7 @@ def rip_disc(self, device_path: str, disc_id: str = None):
         disc_id = device_path.replace("/", "_")
     
     if disc_type == "cd":
-        return {
-            "status": "not_implemented",
-            "message": "CD-Ripping mit abcde noch nicht implementiert",
-            "disc_type": disc_type
-        }
+        return rip_cd(device_path, disc_id)
     elif disc_type == "dvd":
         return rip_dvd(device_path, disc_id)
     elif disc_type == "bluray":