Refactor route protection by replacing ProtectedRoute with ClientRouteGuard in analytics, create-shorturl, and links pages to standardize authentication handling across the application.

app/components/ClientRouteGuard.tsx

@@ -0,0 +1,45 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+import { useRouter } from 'next/navigation';
+
+// 这个组件会检查 localStorage 中是否有认证令牌，如果没有则重定向到登录页面
+export default function ClientRouteGuard({ children }: { children: React.ReactNode }) {
+  const router = useRouter();
+  const [isAuthenticated, setIsAuthenticated] = useState(false);
+  const [isLoading, setIsLoading] = useState(true);
+
+  useEffect(() => {
+    // 检查 localStorage 中是否有认证令牌
+    const checkAuth = () => {
+      // 查找 Supabase 认证令牌
+      const hasAuthToken = !!localStorage.getItem('sb-mwwvqwevplndzvmqmrxa-auth-token') || 
+                           !!localStorage.getItem('sb-auth-token');
+      
+      if (!hasAuthToken) {
+        // 如果没有令牌，重定向到登录页面
+        router.push('/login');
+      } else {
+        setIsAuthenticated(true);
+      }
+      setIsLoading(false);
+    };
+
+    checkAuth();
+  }, [router]);
+
+  // 显示加载状态
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center min-h-screen">
+        <div className="text-center">
+          <div className="animate-spin rounded-full h-16 w-16 border-t-2 border-b-2 border-blue-500 mx-auto"></div>
+          <p className="mt-4 text-lg text-gray-700 dark:text-gray-300">加载中...</p>
+        </div>
+      </div>
+    );
+  }
+
+  // 只有当用户已认证时才显示子组件
+  return isAuthenticated ? <>{children}</> : null;
+}