style(design): apply Minimal Dark Mode design system\n\n- Switched to complete Dark Mode (OLED-friendly)\n- Established standard color palette matching modern technical aesthetics\n- Changed font to Plus Jakarta Sans for increased legibility\n- Enforced dark mode as default in App.tsx\n- Fixed several React cascading render (setState in useEffect) warnings

src/components/ui/skeleton.tsx

@@ -1,7 +1,7 @@
-import { cn } from '@/lib/utils';
-
-function Skeleton({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn('bg-muted animate-pulse rounded-md', className)} {...props} />;
-}
-
-export { Skeleton };
+import { cn } from '@/lib/utils';
+
+function Skeleton({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn('bg-muted animate-pulse rounded-md', className)} {...props} />;
+}
+
+export { Skeleton };