fix: stats loader and smtp daily reset

admin-frontend/src/pages/StatsPage.vue

@@ -3,7 +3,8 @@ import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
 
 import { fetchDockerStats, fetchRunningTasks, fetchServerInfo, fetchTaskStats } from '../api/tasks'
 
-const loading = ref(false)
+const initialLoading = ref(true)
+const lastUpdatedAt = ref('')
 
 const server = ref({
   cpu_percent: '-',
@@ -60,8 +61,15 @@ const serverDiskDisplay = computed(() => `${server.value.disk_used} / ${server.v
 let stop = false
 let timer = null
 
+function recordUpdatedAt() {
+  try {
+    lastUpdatedAt.value = new Date().toLocaleTimeString('zh-CN', { hour12: false })
+  } catch {
+    lastUpdatedAt.value = ''
+  }
+}
+
 async function loadOnce() {
-  loading.value = true
   try {
     const [serverInfo, dockerInfo, taskStat, running] = await Promise.all([
       fetchServerInfo(),
@@ -74,10 +82,11 @@ async function loadOnce() {
     docker.value = dockerInfo || docker.value
     taskStats.value = taskStat || taskStats.value
     monitor.value = running || monitor.value
+    recordUpdatedAt()
   } catch {
     // handled by interceptor
   } finally {
-    loading.value = false
+    initialLoading.value = false
   }
 }
 
@@ -103,10 +112,10 @@ onBeforeUnmount(() => {
 </script>
 
 <template>
-  <div class="page-stack" v-loading="loading">
+  <div class="page-stack" v-loading="initialLoading">
     <div class="app-page-title">
       <h2>统计</h2>
-      <span class="app-muted">实时更新</span>
+      <span class="app-muted">{{ lastUpdatedAt ? `最后更新：${lastUpdatedAt}` : '实时更新' }}</span>
     </div>
 
     <el-row :gutter="12">