refactor(Welcome): 移除注释代码并使用CDN图片替代本地资源

移除不再使用的header注释代码，并将本地图片资源替换为CDN链接以优化加载性能

 <!--
  * @Date: 2025-08-27 17:43:45
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-02 18:11:12
+ * @LastEditTime: 2025-09-05 23:36:28
  * @FilePath: /lls_program/src/pages/Welcome/index.vue
  * @Description: 文件描述
 -->
 <template>
   <view class="min-h-screen flex flex-col bg-white">
-    <!-- Header -->
-    <!-- <header class="py-5 text-center">
-      <h1 class="text-xl font-bold">老来赛</h1>
-    </header> -->
     <!-- Main content -->
     <view class="flex-1 flex flex-col px-4 pb-20">
       <!-- Hero Image -->
@@ -78,10 +74,11 @@
 import { ref } from 'vue';
 import Taro, { useDidShow } from '@tarojs/taro';
 import BottomNav from '../../components/BottomNav.vue'; // 假设BottomNav组件已转换
-import welcomeHomeImg from '../../assets/images/welcome_home.png';
 // 获取接口信息
 import { getUserProfileAPI } from '@/api/user';
 
+const welcomeHomeImg = 'https://cdn.ipadbiz.cn/lls_prog/images/welcome_home.png';
+
 const userAge = ref(null);
 const userInfo = ref({});
 const canCreateFamily = ref(true);