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/common/ErrorBoundary.tsx

@@ -33,8 +33,8 @@ export class ErrorBoundary extends Component<Props, State> {
 
       return (
         <Card className="mx-auto mt-12 max-w-lg space-y-4 p-6 text-center">
-          <h2 className="text-lg font-semibold text-slate-900">页面渲染出错</h2>
-          <p className="text-sm text-slate-600">
+          <h2 className="text-lg font-semibold text-zinc-900">页面渲染出错</h2>
+          <p className="text-sm text-zinc-600">
             {this.state.error?.message ?? "发生了未知错误"}
           </p>
           <div className="flex justify-center gap-3">
@@ -46,7 +46,7 @@ export class ErrorBoundary extends Component<Props, State> {
               重试
             </button>
             <button
-              className="inline-flex h-11 items-center rounded-lg border border-slate-200 bg-white px-4 text-sm font-medium text-slate-700 hover:bg-slate-50"
+              className="inline-flex h-11 items-center rounded-lg border border-zinc-200 bg-white px-4 text-sm font-medium text-zinc-700 hover:bg-zinc-50"
               onClick={() => {
                 window.location.href = "/dashboard";
               }}