feat: Add album artwork support

- Backend: artwork_filename column on clips table (auto-migration)
- Backend: PATCH /api/clips/{id}/artwork (upload image, 5MB limit)
- Backend: GET /api/clips/{id}/artwork (serve image with correct content-type)
- Backend: DELETE /api/clips/{id}/artwork (remove artwork file + null out DB)
- Backend: DELETE /api/clips/{id} now cascade-removes artwork file
- Frontend: Clip interface includes artwork_filename
- Frontend: Gallery ribbons show artwork thumbnail with hover overlay (play + upload)
- Frontend: Gallery tiles show artwork with hover overlay (play + upload)
- Frontend: DetailPanel shows full artwork with upload/change/remove controls
- Frontend: App.tsx handleUploadArtwork + handleRemoveArtwork handlers
- Storage: /data/artwork/ directory for image files

docker-compose.yml

@@ -9,6 +9,8 @@ services:
       - ./data:/app/data
     environment:
       - LYRIA_API_KEY=${LYRIA_API_KEY}
+      - LYRIA_DEFAULT_MODEL=${LYRIA_DEFAULT_MODEL:-lyria-3-clip-preview}
+      - TZ=${TZ:-America/New_York}
     restart: unless-stopped
 
   frontend: