首页修改

@@ -71,6 +71,7 @@
       type: Object,
       default: () => ({
         todayCount: 0,
+        earliestTime: 0,
         rejectedCount: 0,
         totalCount: 0,
         averageCount: 0,
@@ -191,14 +192,14 @@
     }
 
     // 使用解构确保响应式依赖
-    const { todayCount, rejectedCount, totalCount, growthRate } = props.statistics;
+    const { todayCount, rejectedCount, totalCount, growthRate, earliestTime } = props.statistics;
 
     return [
       {
         title: '累计问答次数',
         icon: 'visit-count|svg',
         total: totalCount || 0,
-        tooltip: '系统所有问答记录，从2025年7月1日开始的第一次问答至今所有累计：' + totalCount,
+        tooltip: `系统所有问答记录，从${earliestTime}开始的第一次问答至今所有累计：` + totalCount,
       },
       {
         title: '今日问答次数',

@@ -48,6 +48,7 @@
   // 使用实时数据对象
   const statistics = ref({
     todayCount: 0,
+    earliestTime: '',
     yesterdayCount: 0,
     growthRate: 0,
     rejectedCount: 0,
@@ -101,6 +102,7 @@
       // 直接使用响应数据，不检查 success 属性
       statistics.value = {
         todayCount: res.todayCount || res.data?.todayCount || 0,
+        earliestTime: res.earliestTime || '',
         yesterdayCount: res.yesterdayCount || 0,
         growthRate: res.growthRate || 0,
         rejectedCount: res.rejectedCount || res.data?.rejectedCount || 0,