fix: 埋点统计和日志查询修复

- track.vue: 修复日期格式化（处理 ISO 格式）
- track.vue: 筛选标签改为可滚动
- logs.ts: 修复 queryLogs 参数传递（移除 undefined date）

client/src/pages/admin/track.vue

@@ -30,7 +30,7 @@
       <text class="card-title">最近7天</text>
       <view class="daily-list">
         <view v-for="day in stats.daily" :key="day.date" class="daily-item">
-          <text class="daily-date">{{ day.date.slice(5) }}</text>
+          <text class="daily-date">{{ formatDate(day.date) }}</text>
           <view class="daily-bar">
             <view class="bar-fill" :style="{ width: getBarWidth(day.count) + '%' }"></view>
           </view>
@@ -57,13 +57,14 @@
     <view class="query-section">
       <view class="query-header">
         <text class="section-title">事件记录</text>
-        <view class="filter-tabs">
+        <scroll-view class="filter-tabs" scroll-x>
           <view class="filter-tab" :class="{ active: !filterEvent }" @tap="filterEvent = ''">全部</view>
           <view class="filter-tab" :class="{ active: filterEvent === 'page_view' }" @tap="filterEvent = 'page_view'">页面</view>
           <view class="filter-tab" :class="{ active: filterEvent === 'action' }" @tap="filterEvent = 'action'">操作</view>
           <view class="filter-tab" :class="{ active: filterEvent === 'error' }" @tap="filterEvent = 'error'">错误</view>
           <view class="filter-tab" :class="{ active: filterEvent === 'api_error' }" @tap="filterEvent = 'api_error'">API错误</view>
-        </view>
+          <view class="filter-tab" :class="{ active: filterEvent === 'app_launch' }" @tap="filterEvent = 'app_launch'">启动</view>
+        </scroll-view>
       </view>
 
       <scroll-view class="event-record-list" scroll-y @scrolltolower="loadMore">
@@ -187,6 +188,18 @@ function getEventClass(event: string): string {
   return 'page'
 }
 
+/** 格式化日期（处理 MySQL DATE 类型的 ISO 格式） */
+function formatDate(dateStr: string): string {
+  if (!dateStr) return ''
+  // 处理 2026-06-08T00:00:00.000Z 格式
+  const datePart = dateStr.split('T')[0]
+  const parts = datePart.split('-')
+  if (parts.length === 3) {
+    return `${parseInt(parts[1])}/${parseInt(parts[2])}`
+  }
+  return dateStr
+}
+
 function formatTime(dateStr: string): string {
   const d = new Date(dateStr)
   const now = new Date()
@@ -371,7 +384,8 @@ function goBack() {
 .filter-tabs {
   display: flex;
   gap: $space-xs;
-  flex-wrap: wrap;
+  white-space: nowrap;
+  width: 100%;
 }
 
 .filter-tab {