fix(Profile): 将默认昵称从'用户10086'改为'用户昵称'

refactor(MyFamily): 添加计算属性控制底部按钮显示逻辑
当家庭列表不为空时才显示加入新家庭按钮

fix(EditProfile): 优化头像显示和表单验证逻辑
使用默认头像当用户未上传时
添加表单验证确保必填项不为空
将头像大小限制从10MB改为5MB

@@ -3,8 +3,7 @@
         <!-- Avatar -->
         <view class="flex flex-col items-center py-8" @click="changeAvatar">
             <view class="w-24 h-24 rounded-full bg-gray-100 flex items-center justify-center mb-2 overflow-hidden">
-                <image v-if="formData.avatar_url" :src="formData.avatar_url" class="w-full h-full" mode="aspectFill" />
-                <My size="40" color="#888" v-else />
+                <image :src="formData.avatar_url || defaultAvatar" class="w-full h-full" mode="aspectFill" />
             </view>
             <text class="text-gray-500 text-sm">上传头像</text>
         </view>
@@ -87,6 +86,8 @@ import { ref, reactive, onMounted } from 'vue';
 import Taro from '@tarojs/taro';
 import { My, Date as DateIcon, Right } from '@nutui/icons-vue-taro';
 import BASE_URL from '@/utils/config';
+// 默认头像
+const defaultAvatar = 'https://cdn.ipadbiz.cn/mlaj/images/icon_1.jpeg'
 
 /**
  * @description 表单数据
@@ -173,9 +174,9 @@ const changeAvatar = () => {
     sourceType: ['album', 'camera'],
     success: (res) => {
       const tempFile = res.tempFiles[0];
-      if (tempFile.size > 10 * 1024 * 1024) {
+      if (tempFile.size > 5 * 1024 * 1024) {
         Taro.showToast({
-          title: '图片大小不能超过10MB',
+          title: '图片大小不能超过5MB',
           icon: 'none',
         });
         return;
@@ -211,9 +212,51 @@ const changeAvatar = () => {
 
 // --- Save ---
 /**
+ * @description 验证表单数据
+ * @returns {boolean} 验证是否通过
+ */
+const validateForm = () => {
+  if (!formData.nickname.trim()) {
+    Taro.showToast({
+      title: '请输入昵称',
+      icon: 'none'
+    });
+    return false;
+  }
+
+  if (!formData.birthday) {
+    Taro.showToast({
+      title: '请选择出生年月',
+      icon: 'none'
+    });
+    return false;
+  }
+
+  if (formData.wheelchair === null || formData.wheelchair === undefined) {
+    Taro.showToast({
+      title: '请选择是否需要轮椅出行',
+      icon: 'none'
+    });
+    return false;
+  }
+
+  return true;
+};
+
+/**
  * @description 保存用户信息
  */
 const handleSave = () => {
+  // 验证表单
+  if (!validateForm()) {
+    return;
+  }
+
+  // 如果头像为空，使用默认头像
+  if (!formData.avatar_url) {
+    formData.avatar_url = defaultAvatar;
+  }
+
   console.log('Saving data:', formData);
   Taro.showLoading({ title: '保存中...' });
   // Mock save process

 <!--
  * @Date: 2022-09-19 14:11:06
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-08-29 20:32:52
+ * @LastEditTime: 2025-09-02 14:42:39
  * @FilePath: /lls_program/src/pages/MyFamily/index.vue
  * @Description: 我的家庭页面 - 展示用户加入的家庭列表
 -->
@@ -98,7 +98,7 @@
     </view>
 
     <!-- 底部固定按钮 -->
-    <view class="fixed bottom-0 left-0 right-0 bg-white border-t border-gray-100 p-4 z-10">
+    <view v-if="isShowBtn" class="fixed bottom-0 left-0 right-0 bg-white border-t border-gray-100 p-4 z-10">
       <view
         @tap="joinNewFamily"
         class="w-full bg-blue-500 text-white text-center py-3 rounded-lg font-medium"
@@ -112,7 +112,7 @@
 </template>
 
 <script setup>
-import { ref, onMounted } from 'vue';
+import { ref, onMounted, computed } from 'vue';
 import Taro, { useDidShow } from '@tarojs/taro';
 import { Home } from '@nutui/icons-vue-taro';
 import './index.less';
@@ -163,6 +163,11 @@ const initPageData = () => {
   ];
 };
 
+// 如果家庭列表存在时, 才显示加入新家庭的按钮
+const isShowBtn = computed(() => {
+  return familyList.value.length > 0;
+})
+
 /**
  * 切换到指定家庭
  * @param {number} familyId - 家庭ID

 <!--
  * @Date: 2025-08-27 17:47:46
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-08-29 20:38:36
+ * @LastEditTime: 2025-09-02 14:55:52
  * @FilePath: /lls_program/src/pages/Profile/index.vue
  * @Description: 文件描述
 -->
@@ -108,7 +108,7 @@ const goToEditProfile = () => {
 const initPageData = () => {
   // 获取用户信息
   userInfo.value = {
-    nickName: '用户10086',
+    nickName: '用户昵称',
     avatarUrl: defaultAvatar,
   }
 }