fix: restore complete admin feature dependencies

src/components/ui/skeleton.tsx

@@ -0,0 +1,14 @@
+import { cn } from '@/lib/utils'
+
+function Skeleton({ className, ...props }: React.ComponentProps<'div'>) {
+  return (
+    <div
+      data-slot="skeleton"
+      className={cn('bg-accent animate-pulse rounded-md', className)}
+      {...props}
+    />
+  )
+}
+
+export { Skeleton }
+