feat(积分页面): 添加日期和搜索框的清除功能并优化时间显示

添加清除按钮到日期选择器和搜索框，方便用户重置输入
优化时间显示格式为 YYYY-MM-DD HHss
调整分页参数从每页10条改为5条

@@ -39,29 +39,35 @@
       <div class="p-3 bg-white space-y-3">
         <!-- 日期选择 -->
         <div class="flex items-center justify-between space-x-2">
-          <div class="flex-1 bg-white border border-gray-200 rounded-lg h-9 flex items-center px-3 cursor-pointer"
+          <div class="flex-1 bg-white border border-gray-200 rounded-lg h-9 flex items-center px-3 cursor-pointer relative"
             @click="showStartDatePicker = true">
             <van-icon name="calendar-o" class="text-gray-400 mr-2" />
-            <span :class="startDate ? 'text-gray-800' : 'text-gray-400'" class="text-sm truncate">
+            <span :class="startDate ? 'text-gray-800' : 'text-gray-400'" class="text-sm truncate pr-4">
               {{ startDate || '开始日期' }}
             </span>
+            <van-icon v-if="startDate" name="clear" class="text-gray-300 absolute right-2 z-10"
+              @click.stop="clearStartDate" />
           </div>
           <span class="text-gray-400 text-sm">至</span>
-          <div class="flex-1 bg-white border border-gray-200 rounded-lg h-9 flex items-center px-3 cursor-pointer"
+          <div class="flex-1 bg-white border border-gray-200 rounded-lg h-9 flex items-center px-3 cursor-pointer relative"
             @click="showEndDatePicker = true">
             <van-icon name="calendar-o" class="text-gray-400 mr-2" />
-            <span :class="endDate ? 'text-gray-800' : 'text-gray-400'" class="text-sm truncate">
+            <span :class="endDate ? 'text-gray-800' : 'text-gray-400'" class="text-sm truncate pr-4">
               {{ endDate || '结束日期' }}
             </span>
+            <van-icon v-if="endDate" name="clear" class="text-gray-300 absolute right-2 z-10"
+              @click.stop="clearEndDate" />
           </div>
         </div>
 
         <!-- 搜索框 -->
-        <div class="bg-white border border-gray-200 rounded-lg h-9 flex items-center px-3">
+        <div class="bg-white border border-gray-200 rounded-lg h-9 flex items-center px-3 relative">
           <van-icon name="search" class="text-gray-400 mr-2" size="16" />
           <input v-model="searchKeyword" type="text" placeholder="搜索活动或课程名称"
-            class="flex-1 bg-transparent text-sm text-gray-800 placeholder-gray-400 outline-none"
-            @keyup.enter="onRefresh" />
+            class="flex-1 bg-transparent text-sm text-gray-800 placeholder-gray-400 outline-none pr-6"
+            @keyup.enter="onRefresh" @blur="onRefresh" />
+          <van-icon v-if="searchKeyword" name="clear" class="text-gray-300 absolute right-2 z-10"
+            @click="clearSearch" />
         </div>
       </div>
     </div>
@@ -76,7 +82,7 @@
             </div>
             <div class="flex justify-between items-center">
               <div class="flex flex-col">
-                <span class="text-gray-400 text-xs mb-1">{{ item.event_time }}</span>
+                <span class="text-gray-400 text-xs mb-1">{{ formatTime(item.event_time) }}</span>
                 <span class="text-gray-400 text-xs">{{ item.event_type_desc }}</span>
               </div>
               <div class="text-lg font-bold"
@@ -117,6 +123,11 @@ const headerBg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/962@2x.png'
 const bottleImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/pz02@2x.png'
 const indicatorImg = 'https://cdn.ipadbiz.cn/mlaj/recall/img/xian@2x.png'
 
+const formatTime = (time) => {
+  if (!time) return ''
+  return dayjs(time).format('YYYY-MM-DD HH:mm:ss')
+}
+
 useTitle('我的积分')
 const route = useRoute()
 const router = useRouter()
@@ -141,8 +152,8 @@ const list = ref([])
 const loading = ref(false)
 const finished = ref(false)
 const refreshing = ref(false)
-const page = ref(0)
-const limit = ref(10)
+const page = ref(-1)
+const limit = ref(5)
 const balance = ref('0')
 
 // 切换Tab
@@ -174,6 +185,23 @@ const onConfirmEndDate = ({ selectedValues }) => {
   onRefresh()
 }
 
+// 清除日期
+const clearStartDate = () => {
+  startDate.value = ''
+  onRefresh()
+}
+
+const clearEndDate = () => {
+  endDate.value = ''
+  onRefresh()
+}
+
+// 清除搜索
+const clearSearch = () => {
+  searchKeyword.value = ''
+  onRefresh()
+}
+
 // 加载列表
 const onLoad = async () => {
   const nextPage = page.value + 1
@@ -227,7 +255,7 @@ const onLoad = async () => {
 const onRefresh = () => {
   finished.value = false
   loading.value = true
-  page.value = 0
+  page.value = -1
   refreshing.value = true
   onLoad()
 }