refactor(home): 移除外部链接跳转功能并优化路由导航

- 移除百度链接跳转功能，改为内部路由导航到内容生成页面
- 删除无用的 isChecking 状态和 handleChatClick 处理函数
- 移除菜单项中的 externalLink 属性配置
- 简化侧边栏点击事件处理逻辑，移除外部链接检查代码
- 添加内容生成页面的路由配置

frontend/src/pages/Home/Home.tsx

@@ -10,21 +10,11 @@ import {
   GitBranch,
 } from "lucide-react";
 import { features, menuItems } from "../Layout/menu";
-import { useState } from 'react';
 import { useNavigate } from "react-router";
 import { Card } from "antd";
 
 export default function WelcomePage() {
   const navigate = useNavigate();
-  const [isChecking, setIsChecking] = useState(false);
-
-  const handleChatClick = async () => {
-    if (isChecking) return; // 防止重复点击
-
-    setIsChecking(true);
-
-    window.open('https://baidu.com')
-  };
 
   return (
     <div className="min-h-screen bg-gradient-to-br from-blue-50 to-indigo-100">
@@ -51,11 +41,11 @@ export default function WelcomePage() {
               开始使用
             </span>
             <span
-              onClick={handleChatClick}
-              className="cursor-pointer rounded px-4 py-2 inline-flex items-center bg-gradient-to-r from-purple-600 to-pink-600 hover:from-purple-700 hover:to-pink-700 text-white shadow-lg disabled:opacity-50 disabled:cursor-not-allowed"
+              onClick={() => navigate("/data/content-generation")}
+              className="cursor-pointer rounded px-4 py-2 inline-flex items-center bg-gradient-to-r from-purple-600 to-pink-600 hover:from-purple-700 hover:to-pink-700 text-white shadow-lg"
             >
               <MessageSquare className="mr-2 w-4 h-4" />
-                      内容生成
+              内容生成
             </span>
           </div>
         </div>
@@ -89,13 +79,7 @@ export default function WelcomePage() {
             {menuItems.map((item) => (
               <Card
                 key={item.id}
-                onClick={() => {
-                  if (item.externalLink) {
-                    window.open(item.externalLink, "_blank");
-                    return;
-                  }
-                  navigate(item.children ? `/data/${item.children[0].id}`: `/data/${item.id}`);
-                }}
+                onClick={() => navigate(item.children ? `/data/${item.children[0].id}`: `/data/${item.id}`)}
                 className="cursor-pointer hover:shadow-lg transition-all duration-200 border-0 shadow-md relative overflow-hidden group w-full md:w-[calc(50%-12px)] lg:w-[280px]"
               >
                 <div className="text-center relative">