修正多处问题，添加骨架屏

gym-manage-uniapp/pages/memberInfo/myCourses.vue

@@ -23,6 +23,9 @@
                     >已完成</text>
                 </view>
 
+                <!-- 骨架屏 -->
+                <ListSkeleton v-if="loading" :count="4" layout="card" />
+
                 <!-- 预约列表 -->
                 <view
                     v-for="item in displayedBookings"
@@ -32,7 +35,7 @@
                 >
                     <image
                         class="mi-mod-course-card__banner"
-                        :src="item.coverImage || 'https://gymfuture.oss-cn-chengdu.aliyuncs.com/static/images/default-course.png'"
+                        :src="item.coverImage"
                         mode="aspectFill"
                     />
                     <view class="mi-mod-course-card__content">
@@ -72,8 +75,10 @@
 <script setup>
 import { ref, computed, onMounted } from 'vue'
 import PageHeader from '@/components/index/PageHeader.vue'
+import ListSkeleton from '@/components/Skeleton/ListSkeleton.vue'
 import PayPasswordModal from '@/components/global/PayPasswordModal.vue'
 import { getMemberId } from '@/utils/request.js'
+import { getCourseCoverUrl } from '@/utils/request.js'
 import { getMemberBookings, qrSignInGroupCourse } from '@/api/groupCourse.js'
 import { cancelBooking as cancelBookingApi } from '@/api/groupCourse.js'
 import { getConfigByKey } from '@/api/main.js'
@@ -190,7 +195,7 @@ function mapBooking(b) {
         statusClass: statusClass,
         schedule: formatBookingTime(courseStartTime),
         location: b.location || '',
-        coverImage: b.coverImage || ''
+        coverImage: getCourseCoverUrl(b.coverImage) || 'https://gymfuture.oss-cn-chengdu.aliyuncs.com/static/images/default-course.png'
     }
 }