fix(ui): [UI7-2] 统一全局 Design Tokens，移除冗余字体，修复异常色值引用

client/src/components/ui/skeleton.tsx

@@ -1,5 +1,5 @@
 import { cn } from "../../lib/utils";
 
 export function Skeleton({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
-  return <div className={cn("animate-pulse rounded-md bg-slate-200", className)} {...props} />;
+  return <div className={cn("animate-pulse rounded-md bg-zinc-200", className)} {...props} />;
 }