fix(api): detect direct devices /dev/sr0, /dev/cdrom

- Get devices from /dev/disc/ (udev symlinks)
- Also check direct devices: /dev/sr0, /dev/cdrom, /dev/dvd
- Use udevadm to detect device type (cd/dvd/bluray)
- Extract model and serial for better identification

docker/api/main.py

@@ -136,6 +136,7 @@ async def get_devices():
     devices = []
     
     try:
+        # 1. Zuerst Symlinks in /dev/disc/ prüfen
         result = subprocess.run(
             ["ls", "-la", "/dev/disc/"],
             capture_output=True,
@@ -155,7 +156,49 @@ async def get_devices():
                         path=f"/dev/disc/{name}",
                         status="ready"
                     ))
-    except Exception:
+        
+        # 2. Direkte Geräte /dev/sr0, /dev/cdrom prüfen
+        import os
+        direct_devices = ['/dev/sr0', '/dev/cdrom', '/dev/dvd']
+        for device_path in direct_devices:
+            if os.path.exists(device_path):
+                # Prüfen ob es ein block device ist
+                import stat
+                mode = os.stat(device_path).st_mode
+                if stat.S_ISBLK(mode):
+                    # Geräte-Info aus udevadm holen
+                    result = subprocess.run(
+                        ["udevadm", "info", "-q", "property", "-n", device_path],
+                        capture_output=True,
+                        text=True,
+                        timeout=5
+                    )
+                    info = {}
+                    for line in result.stdout.strip().split('\n'):
+                        if '=' in line:
+                            key, value = line.split('=', 1)
+                            info[key] = value
+                    
+                    device_type = "dvd"
+                    if info.get("ID_CDROM_BD") == "1":
+                        device_type = "bluray"
+                    elif info.get("ID_CDROM_CD") == "1":
+                        device_type = "cd"
+                    
+                    model = info.get("ID_MODEL", "Laufwerk")
+                    serial = info.get("ID_SERIAL", "unknown")
+                    
+                    devices.append(Device(
+                        id=f"{model}_{serial}".replace(" ", "_"),
+                        name=model,
+                        type=device_type,
+                        path=device_path,
+                        status="ready",
+                        serial=serial,
+                        model=model
+                    ))
+    except Exception as e:
+        print(f"Fehler beim Lesen der Geräte: {e}")
         pass
     
     return devices