Fix scan qui échoue

docker-compose.yml

@@ -33,8 +33,8 @@ services:
     ports:
       - "8001:8000"
     volumes:
-      # Mount your audio library (read-only)
-      - ${AUDIO_LIBRARY_PATH:-./audio_samples}:/audio:ro
+      # Mount your audio library (read-write for transcoding and waveforms)
+      - ${AUDIO_LIBRARY_PATH:-./audio_samples}:/audio
       # Mount models directory
       - ./backend/models:/app/models
     restart: unless-stopped