- LayoutStudio was buried after the per-audio list, making settings invisible
before submit; moved it right after the Files section so layout/watermark
settings are always visible in the workflow
- Add -preset ultrafast and -r 1 to both libx264 encode paths; without a
preset FFmpeg defaults to medium and wastes time on motion estimation for
still images; -r 1 avoids 25x frame synthesis overhead on 1080p