refactor(家族封面): 统一使用默认家族封面图片并调整删除按钮样式

将各页面的家族封面图片引用统一为defaultFamilyCover，并调整删除按钮的大小和文字样式

 <!--
  * @Date: 2025-08-27 17:44:53
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-02 11:27:00
+ * @LastEditTime: 2025-09-02 11:36:49
  * @FilePath: /lls_program/src/pages/CreateFamily/index.vue
  * @Description: 文件描述
 -->
@@ -116,9 +116,9 @@
                 <view
                   v-if="familyAvatar"
                   @click="deleteAvatar"
-                  class="absolute -top-2 -right-2 w-6 h-6 bg-red-500 rounded-full flex items-center justify-center"
+                  class="absolute -top-2 -right-2 w-5 h-5 bg-red-500 rounded-full flex items-center justify-center"
                 >
-                  <view class="text-white text-sm">×</view>
+                  <view class="text-white text-xs">×</view>
                 </view>
                 <view
                   @click="chooseImage"
@@ -177,7 +177,7 @@ import Taro from '@tarojs/taro';
 import { Edit, Tips, Photograph, Right } from '@nutui/icons-vue-taro';
 // import AppHeader from '../../components/AppHeader.vue';
 import BASE_URL from '@/utils/config';
-import defaultFamilyCoverSvg from '@/assets/images/default-family-cover.png';
+import defaultFamilyCover from '@/assets/images/default-family-cover.png';
 
 const familyName = ref('');
 const familyIntro = ref('');
@@ -214,7 +214,7 @@ const districtColumns = ref([
 const familyAvatar = ref('');
 const focusedIndex = ref(-1);
 const inputRefs = ref([]);
-const defaultFamilyCover = ref(defaultFamilyCoverSvg);
+const defaultFamilyCover = ref(defaultFamilyCover);
 
 const isFormValid = computed(() => {
   return (

@@ -201,6 +201,7 @@ import TotalPointsDisplay from '@/components/TotalPointsDisplay.vue';
 import PointsCollector from '@/components/PointsCollector.vue'
 import WeRunAuth from '@/components/WeRunAuth.vue'
 import { useMediaPreview } from '@/composables/useMediaPreview';
+import defaultFamilyCover from '@/assets/images/default-family-cover.png';
 
 const todaySteps = ref(0);
 const isWeRunAuthorized = ref(false);
@@ -362,7 +363,7 @@ const initPageData = async () => {
   // 获取用户信息
   familyName.value = '张爷爷的家庭'
   familySlogn.value = '每日走万步，全家一起行'
-  familyCover.value = 'https://placehold.co/800x400/e2f3ff/0369a1?text=LFX&font=roboto'
+  familyCover.value = defaultFamilyCover
 }
 
 useDidShow(() => {

 <!--
  * @Date: 2025-08-27 17:44:53
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-02 11:23:27
+ * @LastEditTime: 2025-09-02 11:38:50
  * @FilePath: /lls_program/src/pages/EditFamily/index.vue
  * @Description: 文件描述
 -->
@@ -115,9 +115,9 @@
                 <view
                   v-if="familyAvatar"
                   @click="deleteAvatar"
-                  class="absolute -top-2 -right-2 w-6 h-6 bg-red-500 rounded-full flex items-center justify-center"
+                  class="absolute -top-2 -right-2 w-5 h-5 bg-red-500 rounded-full flex items-center justify-center"
                 >
-                  <view class="text-white text-sm">×</view>
+                  <view class="text-white text-xs">×</view>
                 </view>
                 <view
                   @click="chooseImage"
@@ -173,7 +173,7 @@ import Taro from '@tarojs/taro';
 import { Edit, Tips, Photograph, Right } from '@nutui/icons-vue-taro';
 // import AppHeader from '../../components/AppHeader.vue';
 import BASE_URL from '@/utils/config';
-import defaultFamilyCoverSvg from '@/assets/images/default-family-cover.png';
+import defaultFamilyCover from '@/assets/images/default-family-cover.png';
 
 const familyName = ref('');
 const familyIntro = ref('');
@@ -209,7 +209,7 @@ const districtColumns = ref([
 ]);
 const familyAvatar = ref('');
 const focusedIndex = ref(-1);
-const defaultFamilyCover = ref(defaultFamilyCoverSvg);
+const defaultFamilyCover = ref(defaultFamilyCover);
 
 // 图片预览相关
 const previewVisible = ref(false);