Initial import: open-design source for helix-mind.ai distribution

This repository contains the open-design daemon CLI source code, built
and packaged at https://helix-mind.ai/cli/open-design/latest.tgz for use
by the HelixMind /design slash command.

Licenses: Apache-2.0 (root) + MIT (skills/*)

skills/hyperframes/references/transitions/css-push.md

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+## Linear / Push
+
+### Push Slide
+
+Both scenes move together — new pushes old out.
+
+```js
+tl.to(old, { x: -1920, duration: 0.5, ease: "power3.inOut" }, T);
+tl.fromTo(new, { x: 1920, opacity: 1 }, { x: 0, duration: 0.5, ease: "power3.inOut" }, T);
+```
+
+### Vertical Push
+
+Same as push slide but vertical.
+
+```js
+tl.to(old, { y: -1080, duration: 0.5, ease: "power3.inOut" }, T);
+tl.fromTo(new, { y: 1080, opacity: 1 }, { y: 0, duration: 0.5, ease: "power3.inOut" }, T);
+```
+
+### Elastic Push
+
+Push with overshoot bounce on the incoming scene.
+
+```js
+tl.to(old, { x: -1920, duration: 0.5, ease: "power3.in" }, T);
+tl.fromTo(new, { x: 1920, opacity: 1 }, { x: 30, duration: 0.4, ease: "power4.out" }, T + 0.1);
+tl.to(new, { x: -15, duration: 0.15, ease: "sine.inOut" }, T + 0.5);
+tl.to(new, { x: 0, duration: 0.1, ease: "sine.out" }, T + 0.65);
+```
+
+### Squeeze
+
+Old compresses, new expands from opposite side.
+
+```js
+tl.to(old, { scaleX: 0, transformOrigin: "left center", duration: 0.4, ease: "power3.inOut" }, T);
+tl.fromTo(new, { scaleX: 0, transformOrigin: "right center", opacity: 1 },
+  { scaleX: 1, duration: 0.4, ease: "power3.inOut" }, T + 0.1);
+tl.set(old, { opacity: 0 }, T + 0.5);
+```