Trailer Master

Workflow

1. Read the TRL-### trailer plan, timeline, audio mix, subtitles, and delivery target.
2. Render its audio mix with audio-master.
3. Render the trailer timeline with scripts/render_timeline.py.
4. Run delivery-qc against duration, aspect, resolution, streams, and codec constraints.
5. Register and approve the final trailer through asset-approval.
6. Run scripts/promo_delivery.py PROJECT --scope trailers --reconcile after the requested trailer set is rendered.
7. Preserve the trailer timeline, mix, QC report, and checksum with the master.

Done

Each requested trailer exists as an actual verified media file, not only an edit plan.