fix and update

apps/frontend/components/ui/skeleton.tsx

@@ -0,0 +1,12 @@
+'use client';
+
+import { cn } from '@/lib/utils';
+
+export function Skeleton({ className, ...props }: React.ComponentProps<'div'>) {
+  return (
+    <div
+      className={cn('animate-pulse rounded-md bg-gradient-to-r from-[#e8ebf0] via-[#f4f6f9] to-[#e8ebf0] bg-[length:200%_100%]', className)}
+      {...props}
+    />
+  );
+}