feat(ActivitiesCover): 添加家庭状态检查逻辑

在参加活动按钮点击时检查用户是否已加入家庭
如果未加入家庭则提示并引导至欢迎页

 <!--
  * @Date: 2022-09-19 14:11:06
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-08-29 10:31:14
+ * @LastEditTime: 2025-08-29 15:39:47
  * @FilePath: /lls_program/src/pages/ActivitiesCover/index.vue
  * @Description: 活动海报页面 - 展示活动信息并处理定位授权
 -->
@@ -71,7 +71,7 @@
         class="join-button"
         color="#3B82F6"
         :loading="isJoining"
-        @click="handleJoinActivity"
+        @click="checkFamilyStatusAndJoinActivity"
       >
         {{ hasLocationAuth ? '进入活动' : '参加活动' }}
       </nut-button>
@@ -139,6 +139,7 @@ import PosterBuilder from '../../components/PosterBuilder/index.vue'
 const hasLocationAuth = ref(false) // 是否已授权定位
 const isJoining = ref(false) // 是否正在加入活动
 const userLocation = ref({ lng: null, lat: null }) // 用户位置信息
+const hasJoinedFamily = ref(false); // TODO: 是否加入家庭
 
 // 海报生成相关状态
 const show_share = ref(false) // 显示分享弹窗
@@ -241,6 +242,31 @@ const getUserLocation = async () => {
 }
 
 /**
+ * 检查用户是否加入家庭并处理参加活动按钮点击
+ */
+const checkFamilyStatusAndJoinActivity = async () => {
+  // Mock data: hasJoinedFamily is set to false
+  if (!hasJoinedFamily.value) {
+    Taro.showModal({
+      title: '提示',
+      content: '没有加入家庭是无法参加活动的',
+      cancelText: '关闭',
+      confirmText: '前往加入',
+      success: (res) => {
+        if (res.confirm) {
+          Taro.navigateTo({
+            url: '/pages/Welcome/index',
+          });
+        }
+      },
+    });
+  } else {
+    handleJoinActivity();
+  }
+};
+
+
+/**
  * 处理参加活动按钮点击
  */
 const handleJoinActivity = async () => {