A determinate-feel loader ambient drawn as a real peristaltic pump: a three-roller rotor spins above a horizontal tube, each roller pinching the lumen fully flat as it passes and driving a visible fluid slug ahead of it while the tube wall rebounds viscoelastically in its wake. Quasi-continuous flow, never a percentage bar.
pnpm dlx shadcn@latest add "https://design.helpmarq.com/r/roller-occlusion.json"