Trailer Edit

Workflow

1. Read ../../references/TRAILER_SYSTEM.md, one TRL-### plan, approved trailer assets, film selections, and spoiler policy.
2. Create 06_release/trailers/TRL-###/timeline.json using the executable timeline schema.
3. Create the matching trailer audio_mix.json with approved score, dialogue, VO, and SFX.
4. Preserve source IDs on every event.
5. Check planned duration against target and tolerance.
6. Re-read the spoiler policy after the cut is assembled.
7. Validate timeline and promo manifests before mastering.

Done

The trailer is represented as a complete executable picture and audio edit with no unresolved required event.