fix(ui-kit): respect prefers-reduced-motion on Skeleton's pulse animation (#7025)

Every other animated ui-kit primitive (Spinner, button, tabs) pairs its
animation with motion-reduce:animate-none; Skeleton was the one loading-state
component in that family that didn't, despite state-views.tsx's own doc
comment claiming the whole family respects prefers-reduced-motion.

Author: galuis116

apps/loopover-ui/src/components/site/skeleton-reduced-motion.test.tsx

@@ -0,0 +1,24 @@
+import { render } from "@testing-library/react";
+import { describe, expect, it } from "vitest";
+
+import { Skeleton } from "@loopover/ui-kit/components/skeleton";
+
+// #7016: every other animated ui-kit primitive (Spinner, button.tsx, tabs.tsx) disables/reduces its
+// animation under prefers-reduced-motion via motion-reduce:animate-none; Skeleton was the one loading-state
+// primitive that didn't, despite state-views.tsx's own doc comment claiming the whole family respects it.
+describe("Skeleton respects prefers-reduced-motion (#7016)", () => {
+  it("pairs animate-pulse with motion-reduce:animate-none", () => {
+    const { container } = render(<Skeleton data-testid="skeleton" />);
+    const el = container.firstElementChild;
+    expect(el?.className).toContain("animate-pulse");
+    expect(el?.className).toContain("motion-reduce:animate-none");
+  });
+
+  it("still merges a caller-supplied className", () => {
+    const { container } = render(<Skeleton className="h-4 w-full" />);
+    const el = container.firstElementChild;
+    expect(el?.className).toContain("h-4");
+    expect(el?.className).toContain("w-full");
+    expect(el?.className).toContain("motion-reduce:animate-none");
+  });
+});

packages/loopover-ui-kit/src/components/skeleton.tsx

@@ -1,7 +1,7 @@
 import { cn } from "../utils";
 
 function Skeleton({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn("animate-pulse rounded-md bg-primary/10", className)} {...props} />;
+  return <div className={cn("animate-pulse rounded-md bg-primary/10 motion-reduce:animate-none", className)} {...props} />;
 }
 
 export { Skeleton };