The top card follows a pointer drag per handoff Motion §4: captured with
setPointerCapture under touch-action none, it moves to translate(dx, dy*0.3)
rotate(dx/18 deg) with the "Try it!" and "Pass" stamps at clamp(±dx/100).
A release past 110 px right throws it from where it was let go (340 ms, no
wiggle); past 110 px left folds it from the drag transform; anything shorter
springs back over 420 ms and resets the stamps. Swipe decisions go through
the same decide handler as the buttons and ← / → keys, so the busy lock and
reduced-motion fade apply unchanged; only the top card is draggable and
input is ignored while busy.
motion.ts gains dragTransform, follow, unfollow and snapBack beside the
exits; DeckCard marks its Pass stamp as a part.
Maestro task 54c12e9e-5f36-4595-babb-e54107bb473b.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>