Add MEMBERSHIP, the club's own 1980s VHS advert

cut.py --cut ad: a plummy announcer (one gpt-audio read per line, ad.sh)
sells St. Mordred's over the creepiest takes with yellow 80s supers, a
PLAY/STOP VCR read-out, two testimonials from the real lines and the small
print read at speed, until the game's umpire says "Quiet." and the jingle
dies. A VHS grade (chroma smear, scanlines, tape wobble) is the cut's own.
gen.py learns a voice command; one new silent Doris take.

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

tools/trailer/clips.sh

@@ -32,6 +32,7 @@ take() {
   serve) c serve 4 serve "Slow motion. The tennis ball floats at the apex of the toss in the floodlight glare; the young woman's racket swings up through the frame toward the ball; behind the net the zombies lurch forward. Audio: a deep slow-motion whoosh, a heartbeat, rising tension." ;;
   reg_dawn) c reg_dawn 6 reg_dawn "Static medium shot. The zombie groundskeeper dabs the red stain on the white line with his handkerchief, glances up at the camera and says cheerfully, in a slow, gravelly old English countryside accent: \"Lovely day for it.\" Then he carries on dabbing. Audio: only his voice, early morning birdsong, a distant sprinkler." ;;
   stands_close) c stands_close 6 stands_close "Static camera. For the first two seconds the dead spectators sit perfectly still, all looking to the left toward the court. Then, in perfect unison, every single head in the stand turns ninety degrees, slowly and mechanically, until every face is looking directly into the camera lens, cloudy eyes wide. They hold the stare, motionless. Nobody speaks, nobody else moves. Audio: silence, faint wind, the creak of old wood as the heads turn, no voices at all." ;;
+  doris_silent) c doris_silent 6 doris "Static camera, advert-style. The zombie strawberry seller silently arranges a punnet of strawberries on the counter, then looks up straight into the camera lens and holds a wide, polite, slightly too long smile. Her mouth stays closed: she does not speak at all. Audio: birdsong, bunting flapping, no voices." ;;
   *) echo "unknown take $1" ;;
   esac
 }