Release notes
- Footer version badge (v0.2.3) next to the Sandbox API badge so testers can confirm which build is running
- Bidirectional progress sync: local run-folder truth for export start + background push to POST /progress/sync-local after images/export
- Progress export readiness checklist in the footer (run folder PNGs, MP3s, profile template, catalog, auth, /progress load)
- Start Export button on pending export rows (same path as Rebuild MP4)
- MP3 on-disk naming helpers (_OK.mp3 / _Alt.mp3) in validation messages
- Stale video export state no longer blocks Force Regenerate / Rebuild MP4 with “pipeline already running” when no worker is alive
- Auto-video uses local disk readiness instead of stale API metadata; orchestration poll failures surface in the footer