A determinate progress bar redrawn as an analog tape transport: a capstan shaft turns at a strictly constant rate while a pinch roller's nip actually sets the tape's speed, and every ~1.1s the nip visibly compresses, slips, and springs back through one small overshoot.
npx shadcn@latest add https://design.helpmarq.com/r/capstan-slip.jsoncapstan-slip