Extract authenticated coulomb.social design language via designlang

Session probe lands on /vw_pages (Research). Use main designlang extract
with --cookie-file — pack ignores auth. 39 artifacts under
docs/design-extract; tolerate designlang late summary crash when cores exist.

docs/design-extract/coulomb-social-motion.one.js

@@ -0,0 +1,58 @@
+// Motion One presets — generated by designlang (motionlang)
+// Source: https://coulomb.social
+// 2026-08-08T23:30:22.010Z
+//
+//   import { animate } from 'motion';
+//   import { animations, easings, durations } from './coulomb.social-motion.one.js';
+//
+//   animations.fadeIn('#hero');
+//   animations.slideUp('.card', { delay: 0.1 });
+
+/** Easing curves extracted from the live page, as Motion One cubic-bezier arrays. */
+export const easings = {
+  standard: [0.25, 0.1, 0.25, 1],
+};
+
+/** Duration presets (seconds), extracted from the live page. */
+export const durations = {
+  sm: 0.25,
+};
+
+/** Motion One spring options — pass as the `type: 'spring'` block of an animate() call. */
+export const springs = {
+  soft: { type: 'spring', stiffness: 320, damping: 30, mass: 1 },
+};
+
+/** No on-page @keyframes were attached to elements; emit empty for shape parity. */
+export const keyframes = {};
+
+/** Animate-on-call helpers. Each takes a Motion One target + optional override. */
+import { animate } from 'motion';
+
+const _t = { duration: 0.25, easing: easings.standard };
+
+export const animations = {
+  fadeIn: (target, opts = {}) =>
+    animate(target, { opacity: [0, 1] }, { ..._t, ...opts }),
+  fadeOut: (target, opts = {}) =>
+    animate(target, { opacity: [1, 0] }, { ..._t, ...opts }),
+  slideUp: (target, opts = {}) =>
+    animate(target, { opacity: [0, 1], y: [16, 0] }, { ..._t, ...opts }),
+  slideDown: (target, opts = {}) =>
+    animate(target, { opacity: [0, 1], y: [-16, 0] }, { ..._t, ...opts }),
+  scaleIn: (target, opts = {}) =>
+    animate(target, { opacity: [0, 1], scale: [0.96, 1] }, { ..._t, ...opts }),
+  pop: (target, opts = {}) =>
+    animate(target, { scale: [0.9, 1] }, { ...springs.soft, ...opts }),
+};
+
+/** Site uses scroll- or view-timeline. Helpers wired to Motion One's `inView` / `scroll`. */
+import { inView, scroll } from 'motion';
+
+export const enterOnView = (target, variant = animations.slideUp) =>
+  inView(target, (el) => { variant(el.target); });
+
+export const parallaxY = (target, distance = 80) =>
+  scroll(animate(target, { y: [0, -distance] }, { easing: 'linear' }));
+
+export default { easings, durations, springs, keyframes, animations };