Add the LIFETIME MEMBERS trailer pipeline

A vertical live-action mockumentary trailer: the dead staff of St. Mordred's
(the game's bosses) each tell a different origin story, and the film ends on
"Quiet, please." / "Play." / splat. tools/trailer/ holds the whole pipeline:
stills and takes through the OpenRouter key (gen.py, stills.sh, clips.sh),
the frame graphics in HTML/CSS (frame.html), a QA listener (qa.py), the
music sectioner (segment.py) and the edit (cut.py). Media lands in the
gitignored promo/trailer/. SCRIPT.md is the screenplay and the cut notes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -8,6 +8,7 @@ assets/_gen/
 assets/_refcheck/
 assets/__pycache__/
 promo/clips/
+promo/trailer/
 
 # the Capacitor shell. ios/ IS committed (it is the project, and Xcode settings live in it) —
 # ios/.gitignore already keeps the copied web payload, Pods and Xcode's per-user junk out of it.