fix: 订场页时间标签显示修复 + 约课页列表刷新修复

- private/index.vue: 时间标签改为单时间+竖线样式，第一行加 margin-top 防止被表头遮挡
- courses/index.vue: 修复切换Tab/日期列表不刷新问题(竞态条件+不清空旧数据+无错误处理)
- .env: 冰场馆URL修正

miniprogram/src/pages/comprehensive/courses/index.vue

@@ -118,6 +118,7 @@ const pageSize = 20
 const total = ref(0)
 const isLoading = ref(false)
 const isLoadingMore = ref(false)
+let loadRequestId = 0
 
 const ticketProduct = ref(null)
 const ticketQty = ref(1)
@@ -143,6 +144,7 @@ const dateOptions = computed(() => {
 const hasMore = computed(() => sessions.value.length < total.value)
 
 const switchTab = (tab) => {
+  if (activeTab.value === tab) return
   activeTab.value = tab
   if (tab === 'tickets') {
     loadTicketProduct()
@@ -153,15 +155,22 @@ const switchTab = (tab) => {
 }
 
 const onDateSelect = (date) => {
+  if (selectedDate.value === date) return
   selectedDate.value = date
   loadSessions(true)
 }
 
 const loadSessions = async (reset) => {
-  if (activeTab.value === 'membership' && !session.isLoggedIn) return
+  if (activeTab.value === 'membership' && !session.isLoggedIn) {
+    sessions.value = []
+    total.value = 0
+    return
+  }
+  const requestId = ++loadRequestId
   if (reset) {
     page.value = 1
     isLoading.value = true
+    sessions.value = []
   } else {
     isLoadingMore.value = true
   }
@@ -172,11 +181,20 @@ const loadSessions = async (reset) => {
     } else {
       data = await courseApi.getSessions({ page: page.value, pageSize, date: selectedDate.value })
     }
+    if (requestId !== loadRequestId) return
     sessions.value = reset ? data.items : [...sessions.value, ...data.items]
     total.value = data.total
+  } catch {
+    if (requestId !== loadRequestId) return
+    if (reset) {
+      sessions.value = []
+      total.value = 0
+    }
   } finally {
-    isLoading.value = false
-    isLoadingMore.value = false
+    if (requestId === loadRequestId) {
+      isLoading.value = false
+      isLoadingMore.value = false
+    }
   }
 }
 

miniprogram/src/pages/comprehensive/private/index.vue

@@ -50,8 +50,11 @@
             v-for="(slot, si) in grid.time_slots"
             :key="si"
             class="grid-row"
+            :class="{ 'grid-row-first': si === 0 }"
           >
-            <view class="time-label-cell">{{ slot.start }}</view>
+            <view class="time-label-cell">
+              <text class="time-text">{{ slot.start }}</text>
+            </view>
             <view
               v-for="court in grid.courts"
               :key="court.id"
@@ -489,24 +492,38 @@ defineExpose({
   display: flex;
 }
 
+.grid-row-first {
+  margin-top: 20rpx;
+}
+
 .time-label-cell {
   width: 128rpx;
   flex-shrink: 0;
   height: 107rpx;
-  display: flex;
-  align-items: center;
-  justify-content: center;
   background: $bg-color-main;
   border-right: 1rpx solid $border-color;
   border-bottom: 1rpx solid $bg-color-hover;
-  color: $text-color-muted;
-  font-size: 20rpx;
-  font-weight: 700;
   position: sticky;
   left: 0;
   z-index: 5;
 }
 
+.time-text {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  text-align: center;
+  transform: translateY(-50%);
+  background: $bg-color-main;
+  padding: 0 6rpx;
+  font-size: 20rpx;
+  font-weight: 700;
+  color: $text-color-muted;
+  line-height: 1;
+  z-index: 6;
+}
+
 .grid-cell {
   width: 149rpx;
   flex-shrink: 0;