[ns-ui] The donut.c homage done properly: a rotating 3D torus with real per-character depth buffering and Lambertian shading, spinning on two axes, drag-rotated with inertia, framed by a box-drawing HUD printing a live rotation readout.
pnpm dlx shadcn@latest add "https://registry.directory/r/nikolas-sapa/ascii-torus-donut.json"