Per-frame canvas cover-video with stained-glass transmissive backlight, two-layer parallax depth, music-driven fine-row slitscan, wanderbeach- matched timecode + full-width progress bar, ported verlet-string playhead, waveform-only (additive-combining) timeline. Plus build.mjs versioned orchestrator, sing.mjs/vocal.mjs jeffrey-pvc stem, preview.sh + hover-loop.lua clean player. out/ (regenerable audio) gitignored. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>