perf: 并行化 admin 聚合路由并完善前端缓存预取

- gateway: usage detail / provider summary / pool overview / users list 改为 tokio join 并行拉取依赖数据
- usage: interval timeline 支持自动刷新并按查询区间动态展示，取消服务端 120 分钟过滤并在 ScatterChart 统一封顶
- frontend: 新增管理端导航预取工具及 SidebarNav/MainLayout 触发，admin 读接口统一走 cachedRequest 的短期缓存
- dashboard: request detail 支持短 TTL 缓存并在 UsageRecordsTable mousedown 时预取
- data: migrate 测试在 wait_for_postgres 失败时清理子进程，避免遗留

frontend/src/features/usage/components/IntervalTimelineCard.vue

@@ -66,14 +66,18 @@ const props = withDefaults(defineProps<{
   title: string
   isAdmin: boolean
   hours?: number
+  refreshIntervalMs?: number
 }>(), {
-  hours: 24  // 默认当天
+  hours: 24,  // 默认当天
+  refreshIntervalMs: 30000
 })
 
 const loading = ref(false)
 const timelineData = ref<IntervalTimelineResponse | null>(null)
 const primaryColor = ref('201, 100, 66')  // 默认主题色
 let loadRequestId = 0
+let refreshTimer: ReturnType<typeof setTimeout> | null = null
+const isPageVisible = ref(typeof document === 'undefined' ? true : !document.hidden)
 
 const ADMIN_TIMELINE_LIMIT = 1500
 const USER_TIMELINE_LIMIT = 1200
@@ -90,7 +94,11 @@ function getPrimaryColor(): string {
 
 onMounted(() => {
   primaryColor.value = getPrimaryColor()
+  if (typeof document !== 'undefined') {
+    document.addEventListener('visibilitychange', handleVisibilityChange)
+  }
   void loadData()
+  scheduleNextRefresh()
 })
 
 // 预定义的颜色列表（用于区分不同用户/模型）
@@ -315,11 +323,45 @@ async function loadData() {
   }
 }
 
+function stopRefreshTimer() {
+  if (refreshTimer) {
+    clearTimeout(refreshTimer)
+    refreshTimer = null
+  }
+}
+
+function scheduleNextRefresh() {
+  if (refreshTimer) return
+  if (!isPageVisible.value) return
+  if (!props.refreshIntervalMs || props.refreshIntervalMs <= 0) return
+  refreshTimer = setTimeout(async () => {
+    refreshTimer = null
+    await loadData()
+    scheduleNextRefresh()
+  }, props.refreshIntervalMs)
+}
+
+function handleVisibilityChange() {
+  isPageVisible.value = !document.hidden
+  if (!isPageVisible.value) {
+    stopRefreshTimer()
+    return
+  }
+  void loadData()
+  scheduleNextRefresh()
+}
+
 watch([() => props.hours, () => props.isAdmin], () => {
   void loadData()
+  stopRefreshTimer()
+  scheduleNextRefresh()
 })
 
 onBeforeUnmount(() => {
   loadRequestId++
+  if (typeof document !== 'undefined') {
+    document.removeEventListener('visibilitychange', handleVisibilityChange)
+  }
+  stopRefreshTimer()
 })
 </script>

frontend/src/features/usage/components/RequestDetailDrawer.vue

@@ -1664,7 +1664,10 @@ async function loadDetail(id: string, silent = false) {
   }
   error.value = null
   try {
-    const response = await dashboardApi.getRequestDetail(id, { includeBodies: false })
+    const response = await dashboardApi.getRequestDetail(id, {
+      includeBodies: false,
+      cacheTtlMs: silent ? 0 : 5_000
+    })
     if (requestId !== loadDetailRequestId) return
 
     const previousDetail = detail.value

frontend/src/features/usage/components/UsageRecordsTable.vue

@@ -341,7 +341,7 @@
           v-else
           :key="record.id"
           :class="isAdmin ? 'cursor-pointer border-b border-border/40 hover:bg-muted/30 transition-colors h-[72px]' : 'border-b border-border/40 hover:bg-muted/30 transition-colors h-[72px]'"
-          @mousedown="handleMouseDown"
+          @mousedown="handleRowMouseDown($event, record.id)"
           @click="handleRowClick($event, record.id)"
         >
           <TableCell class="text-xs py-4 w-[70px]">
@@ -730,6 +730,7 @@ const emit = defineEmits<{
   'update:autoRefresh': [value: boolean]
   'refresh': []
   'showDetail': [id: string]
+  'prefetchDetail': [id: string]
 }>()
 
 // 静态常量（放在 defineProps/defineEmits 之后）
@@ -776,6 +777,13 @@ watch(localSearch, (value) => {
 // 使用复用的行点击逻辑
 const { handleMouseDown, shouldTriggerRowClick } = useRowClick()
 
+function handleRowMouseDown(event: MouseEvent, id: string) {
+  handleMouseDown(event)
+  if (!props.isAdmin) return
+  if (event.button !== 0) return
+  emit('prefetchDetail', id)
+}
+
 // 处理行点击，排除文本选择操作
 function handleRowClick(event: MouseEvent, id: string) {
   if (!props.isAdmin) return