- UploadManager store: tracks jobs through uploading → processing → done/failed
- UploadPanel component: floating bottom-left widget showing upload progress,
file names, sizes, status with auto-dismiss for completed items
- axios onUploadProgress wired for real-time upload percentage
- Video jobs transition to "processing" after upload, then "done" when
media:job:update socket event arrives (reuses existing pipeline)
- Failed uploads show error message from server response
- Clear button to dismiss finished/failed items