feat: motion playground#75
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Standalone /playground route to learn motion properties hands-on. Spring, tween (with a draggable bezier editor) and stagger, each with a labelled preview, per-control vocab hints, quick-start presets and live copy-paste code. Self-contained modules under components/app/playground; not part of the component registry.
Strobe trail and easing meaning box make tween curves legible, shiki syntax highlighting on the live code panel.
Add keyframes, gestures, layout and scroll types. Each type now ships a 'How it works' panel that decodes the live code in plain English. Keyframe values are editable (add/remove/change) via a numberlist control with a coerce hook that resets them when the property changes.
Each checkpoint is a slider bounded per property, captioned with what the value means (e.g. 150% size, rotated 180deg).
Sidebar pins on scroll. Replace native selects with a springy dropdown that morphs open from the top with a blur-resolve and staggered items.
Composable select primitives (Select, SelectTrigger, SelectValue, SelectContent, SelectItem). Panel unfolds out of the trigger edge and separates with a spring bounce, items stagger in. Playground selects now use it; registered in the catalog.
Keep items mounted and animate the panel open/closed instead of mounting/unmounting, so label registrations persist.
Square off the trigger's bottom corners on open and grow the panel flush from that edge (shared border, same surface) so it reads as the trigger extending rather than a detached card.
Phase the open: the panel is born attached to the trigger (flush, flat edge), then drops into a gap as both ends round back with a slight overshoot — a gooey start-together-then-separate.
Drive the gap with a delayed spring (overshoot is the bounce) instead of a manual keyframe that tweened down then back up. Restores bounce, kills the flicky up-move after the panel drops.
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Standalone
/playgroundroute to learn motion properties hands-on.What
Notes
components/app/playground/. Adding a type = one module + one line initems/index.ts.lib/registry.ts— site chrome, not a distributable component.typecheck, lint and check:registry pass.