fix(收藏功能): 修复未登录时收藏操作未跳转登录页的问题

处理收藏/取消收藏接口返回401未登录时，参考全局axios重定向逻辑跳转到登录页

@@ -389,7 +389,7 @@ import { useAuth } from '@/contexts/auth'
 import { useTitle } from '@vueuse/core';
 import { wxInfo } from '@/utils/tools';
 import { startWxAuth } from '@/router/guards'
-import { getAuthInfoAPI } from '@/api/auth'
+import { getAuthInfoAPI, getUserIsLoginAPI } from '@/api/auth'
 import { showToast, showDialog, showImagePreview } from 'vant';
 import { formatDate } from '@/utils/tools'
 import { sharePage } from '@/composables/useShare.js'
@@ -621,24 +621,43 @@ const call_phone = (phone) => {
 const { addToCart, proceedToCheckout } = useCart()
 
 
-// Handle favorite toggle
-// 收藏/取消收藏操作
+/**
+ * 收藏/取消收藏操作
+ * @description 添加收藏接口返回401未登录时，参考全局axios重定向逻辑，跳转到登录页并带上当前路径。
+ * @returns {Promise<void>}
+ */
 const toggleFavorite = async () => {
   if (isFavorite.value) {
-    const { code, msg } = await cancelFavoriteAPI({
+    const resp = await cancelFavoriteAPI({
       group_id: course.value.id
     })
+    const code = resp && typeof resp === 'object' ? resp.code : 0
     if (code) {
       isFavorite.value = !isFavorite.value
       showToast('取消收藏')
+    } else {
+      const msg = resp && resp.msg ? resp.msg : '取消收藏失败'
+      showToast(msg)
     }
   } else {
-    const { code, msg } = await addFavoriteAPI({
+    const resp = await addFavoriteAPI({
       group_id: course.value.id
     })
+    const code = resp && typeof resp === 'object' ? resp.code : 0
     if (code) {
       isFavorite.value = !isFavorite.value
       showToast('收藏成功')
+    } else {
+      // 未登录时跳转到登录页，带上回跳地址（参考 axios.js 逻辑）
+      const login_check = await getUserIsLoginAPI()
+      const is_login = login_check && login_check.data ? login_check.data.is_login : false
+      if (is_login === false) {
+        const current_path = $route.fullPath
+        router.push(`/login?redirect=${encodeURIComponent(current_path)}`)
+        return
+      }
+      const msg = resp && resp.msg ? resp.msg : '收藏失败'
+      showToast(msg)
     }
   }
 }