[ns-ui] An ambient ASCII background of the destructive-interference nodal set of four point emitters: ink appears only where the summed radial waves cancel to near zero, tracing the hyperbolic dead-fringe families across an otherwise empty field, with the pointer as a fifth, phase-shifted emitter that redra
pnpm dlx shadcn@latest add "https://registry.directory/r/nikolas-sapa/background-ascii-nodal-lines.json"