A divider/footer band whose streaming motion is built from a real tilemap-PPU scroll: a fine register sweeps 0..cellPx-1 sub-pixel offsets across 480ms before a coarse register ticks a tile over, with both registers exposed as a live numeric coarse/fine readout beside the strip.
npx shadcn@latest add https://design.helpmarq.com/r/scroll-fine-register.jsonscroll-fine-register