- Move gear icon to left of Video/Audio toggle
- Add output format selector in options panel:
Audio: Auto, MP3, WAV, M4A, FLAC, OPUS
Video: Auto, MP4, WEBM
- Backend: postprocess audio to selected codec via FFmpegExtractAudio
- Backend: postprocessor_hooks capture final filename after conversion
(fixes .webm showing when file was converted to .mp3)
- Add media type icon (video camera / music note) in download table
next to filename, inferred from quality field and file extension
- Pass media_type and output_format through JobCreate model