feat: 自动备份与保留策略、健康持续化与状态页、指标历史与趋势图，并修隧道判定误报与仪表盘布局（v1.2.11）

- 自动备份：每日一份（按最新备份是否在 24h 内判定，重启不重复）、保留份数可配、列表/下载/恢复/删除，恢复前先校验归档；顺手修 writeArchive 逐个检查 tar/gzip/文件 Close()（审查报告 §二）

- 健康持续化：只存状态变更（up/down/unknown）并推导可用率与不可用区间；公开状态页默认关闭、访问码存 SHA-256、按 IP 限流、只暴露域名与可用率

- 隧道判定修复：RouteHealthCandidate 新增 tunnel_known，frps 管理接口不可用时不再把「判不出来」当成「不通」（此前会误报「隧道连续不通」）；汇总与徽标同样区分「无法判定」

- 指标历史：metrics_samples 纵向点表（本机 CPU/内存/磁盘 + 每规则上下行，30 天保留、查询按桶平均、不做降采样表）；仪表盘趋势卡支持 1h/24h/7d

- 仪表盘布局：运行状态并入顶部统计区（运行时长补进「服务」卡）；性能并入系统资源那一行，整行 4 列

- 测试：backup/metrics/frp/api/app 新增用例；gofmt、go build/vet/test、vue-tsc、vite build 全绿

- agent 无改动，AgentVersion 保持 0.12.2

web/src/api/client.ts

@@ -349,6 +349,18 @@ export const api = {
     request<import('./types').FrpAgentRouteHealth[]>(`/api/frpmulti/servers/${serverId}/agent/routes/health`),
   getFrpRouteHealthSummary: () =>
     request<import('./types').FrpRouteHealthSummary>('/api/frpmulti/routes/summary'),
+  getFrpRouteUptime: (hours = 24) =>
+    request<{ hours: number; items: import('./types').FrpRouteUptime[] }>(`/api/frpmulti/routes/uptime?hours=${hours}`),
+
+  // 指标历史：窗口内的序列已按桶取平均，拿到就能直接画
+  getMetricsHistory: (hours = 24, buckets = 48) =>
+    request<import('./types').MetricsHistory>(`/api/metrics/history?hours=${hours}&buckets=${buckets}`),
+
+  // 匿名状态页：未开启或访问码不对时后端回 404
+  getStatusPage: (code?: string) =>
+    request<import('./types').StatusPagePayload>(
+      `/api/status-page${code ? `?code=${encodeURIComponent(code)}` : ''}`,
+    ),
   removeFrpAgentRoute: (serverId: number, proxyId: number) => request<{ ok: boolean }>(`/api/frpmulti/servers/${serverId}/agent/routes/${proxyId}`, { method: 'DELETE' }),
   pushFrpConfigToAgent: (id: number) => request<{ ok: boolean }>(`/api/frpmulti/servers/${id}/agent/frps-config`, { method: 'POST' }),
   frpsServerAction: (id: number, action: 'start' | 'stop' | 'restart') =>
@@ -399,6 +411,28 @@ export const api = {
     URL.revokeObjectURL(url)
   },
 
+  listBackupArchives: () =>
+    request<{ archives: import('./types').BackupArchive[]; keep: number }>('/api/backup/archives'),
+  createBackupArchive: () =>
+    request<{ name: string; removed: number }>('/api/backup/archives', { method: 'POST' }),
+  restoreBackupArchive: (name: string) =>
+    request<{ message: string }>(`/api/backup/archives/${encodeURIComponent(name)}/restore`, { method: 'POST' }),
+  deleteBackupArchive: (name: string) =>
+    request<{ ok: boolean }>(`/api/backup/archives/${encodeURIComponent(name)}`, { method: 'DELETE' }),
+  async downloadBackupArchive(name: string) {
+    const response = await fetch(`/api/backup/archives/${encodeURIComponent(name)}`, { credentials: 'include' })
+    if (!response.ok) {
+      throw new Error('下载备份失败')
+    }
+    const blob = await response.blob()
+    const url = URL.createObjectURL(blob)
+    const link = document.createElement('a')
+    link.href = url
+    link.download = name
+    link.click()
+    URL.revokeObjectURL(url)
+  },
+
   async restoreBackup(file: File) {
     const form = new FormData()
     form.append('file', file)

web/src/api/types.ts

@@ -720,6 +720,8 @@ export interface FrpAgentRouteHealth {
   cert_ok: boolean
   cert_detail?: string
   tunnel_ok: boolean
+  /** 隧道状态是否判得出来：frps 管理接口不可用时 tunnel_ok 恒为 false，但那不代表隧道不通 */
+  tunnel_known?: boolean
   tunnel_name?: string
   tunnel_detail?: string
   service_ok: boolean
@@ -732,6 +734,8 @@ export interface FrpRouteHealthSummary {
   dns_failed: number
   cert_missing: number
   tunnel_down: number
+  /** frps 管理接口不可用、隧道状态判不出来的条数 */
+  tunnel_unknown?: number
   service_down: number
   failed_servers?: string[]
 }
@@ -940,3 +944,68 @@ export interface ApiToken {
 export interface CreatedApiToken extends ApiToken {
   token: string
 }
+
+// 留在服务器上的备份（自动备份 + 手动「立即备份」）
+export interface BackupArchive {
+  name: string
+  size: number
+  mod_time: string
+}
+
+// 规则可用率：由后台巡检落库的状态变更推导，不是页面现算
+// （不可用区间与判不出来的时长分开给，unknown 不计入可用率分母）
+export interface FrpRouteUptimeIncident {
+  from: string
+  to?: string
+  reason?: string
+  detail?: string
+  minutes: number
+}
+
+export interface FrpRouteUptime {
+  server_id: number
+  domain: string
+  state: string
+  uptime_pct: number
+  down_minutes: number
+  unknown_minutes: number
+  covered_minutes: number
+  incidents: FrpRouteUptimeIncident[]
+}
+
+// 指标历史：scope=host 是本机，scope=route:<serverID>:<domain> 是单条规则的流量
+export interface MetricsPoint {
+  at: string
+  value: number
+}
+
+export interface MetricsSeries {
+  scope: string
+  metric: string
+  points: MetricsPoint[]
+}
+
+export interface MetricsHistory {
+  hours: number
+  buckets: number
+  series: MetricsSeries[]
+}
+
+// 公开状态页（匿名只读）：只有域名与可用率，不含内网地址/端口/证书路径
+export interface StatusPageRoute {
+  domain: string
+  state: string
+  uptime_pct: number
+  down_minutes: number
+  unknown_minutes: number
+}
+
+export interface StatusPagePayload {
+  title: string
+  code_required: boolean
+  checked_at: string
+  up: number
+  down: number
+  unknown: number
+  routes: StatusPageRoute[]
+}

web/src/components/MetricsTrendChart.vue

@@ -0,0 +1,93 @@
+<template>
+  <VChart class="trend-chart" :option="option" autoresize />
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+import { use } from 'echarts/core'
+import { LineChart } from 'echarts/charts'
+import { GridComponent, LegendComponent, TooltipComponent } from 'echarts/components'
+import { CanvasRenderer } from 'echarts/renderers'
+import VChart from 'vue-echarts'
+import { useTheme } from '../composables/useTheme'
+import { formatRate } from '../utils/format'
+
+use([CanvasRenderer, LineChart, GridComponent, LegendComponent, TooltipComponent])
+
+const props = defineProps<{
+  labels: string[]
+  series: { name: string; values: (number | null)[] }[]
+  unit: 'percent' | 'rate'
+}>()
+
+const { isDark } = useTheme()
+
+// 与其它图表保持同一套配色（ECharts 是色值的既有例外）
+const SERIES_COLORS = ['#10b981', '#3b82f6', '#f59e0b', '#8b5cf6']
+
+function axisValue(value: number): string {
+  if (props.unit === 'percent') return `${Math.round(value)}%`
+  return formatRate(value)
+}
+
+const option = computed(() => {
+  const textColor = isDark.value ? '#94a3b8' : '#9ca3af'
+  const splitColor = isDark.value ? '#334155' : '#e5e7eb'
+
+  return {
+    grid: { left: 4, right: 12, top: 30, bottom: 6, containLabel: true },
+    legend: {
+      top: 0,
+      left: 0,
+      icon: 'roundRect',
+      itemWidth: 8,
+      itemHeight: 8,
+      itemGap: 14,
+      textStyle: { color: textColor, fontSize: 11 },
+    },
+    tooltip: {
+      trigger: 'axis',
+      backgroundColor: isDark.value ? '#1e293b' : '#fff',
+      borderColor: isDark.value ? '#334155' : '#e5e7eb',
+      textStyle: { color: isDark.value ? '#f1f5f9' : '#111827', fontSize: 12 },
+      valueFormatter: (value: number | null | undefined) =>
+        value === null || value === undefined ? '—' : axisValue(value),
+    },
+    xAxis: {
+      type: 'category',
+      boundaryGap: false,
+      data: props.labels,
+      axisLine: { show: false },
+      axisTick: { show: false },
+      axisLabel: { color: textColor, fontSize: 11 },
+    },
+    yAxis: {
+      type: 'value',
+      min: 0,
+      splitNumber: 3,
+      splitLine: { lineStyle: { color: splitColor, type: 'dashed' } },
+      axisLabel: { color: textColor, fontSize: 11, formatter: (v: number) => axisValue(v) },
+    },
+    series: props.series.map((item, index) => ({
+      name: item.name,
+      type: 'line',
+      smooth: true,
+      // 刚开始采样时只有一两个点：必须画点，否则「无线可画」看起来像没有数据
+      showSymbol: props.labels.length <= 12,
+      symbolSize: 5,
+      // 空桶在数据里是 null：图上断开而不是补 0，避免凭空出现谷底
+      connectNulls: false,
+      data: item.values,
+      lineStyle: { width: 2, color: SERIES_COLORS[index % SERIES_COLORS.length] },
+      itemStyle: { color: SERIES_COLORS[index % SERIES_COLORS.length] },
+    })),
+  }
+})
+</script>
+
+<style scoped>
+.trend-chart {
+  width: 100%;
+  height: 200px;
+}
+</style>

web/src/components/MetricsTrendPanel.vue

@@ -0,0 +1,141 @@
+<template>
+  <div class="trend-panel" :class="{ 'trend-panel--loading': loading }">
+    <p v-if="error" class="trend-panel__hint trend-panel__hint--error">{{ error }}</p>
+    <template v-else>
+      <section class="trend-panel__section">
+        <span class="trend-panel__label">资源占用</span>
+        <MetricsTrendChart :labels="resource.labels" :series="resource.series" unit="percent" />
+        <p v-if="resource.labels.length === 0" class="trend-panel__hint">
+          还没有资源数据：从这一版起每 2 分钟采样一次，等一两分钟就会出现。
+        </p>
+      </section>
+
+      <section class="trend-panel__section">
+        <span class="trend-panel__label">隧道流量</span>
+        <MetricsTrendChart :labels="traffic.labels" :series="traffic.series" unit="rate" />
+        <p v-if="traffic.labels.length === 0" class="trend-panel__hint">
+          还没有流量数据（需要反代规则产生过访问）。
+        </p>
+      </section>
+    </template>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, ref, watch } from 'vue'
+import MetricsTrendChart from './MetricsTrendChart.vue'
+import { api } from '../api/client'
+import { METRICS_RANGES } from '../constants/metrics'
+import type { MetricsSeries } from '../api/types'
+
+// 时间档与切换按钮都由父级（卡片表头）给，本组件只负责取数与绘制
+const props = defineProps<{ hours: number }>()
+
+const seriesRaw = ref<MetricsSeries[]>([])
+const error = ref('')
+const loading = ref(false)
+
+async function load() {
+  loading.value = true
+  try {
+    const range = METRICS_RANGES.find((item) => item.hours === props.hours) ?? METRICS_RANGES[1]
+    const result = await api.getMetricsHistory(range.hours, range.buckets)
+    seriesRaw.value = result.series ?? []
+    error.value = ''
+  } catch (err) {
+    error.value = err instanceof Error ? err.message : '读取指标历史失败'
+  } finally {
+    loading.value = false
+  }
+}
+
+function formatLabel(at: string): string {
+  const date = new Date(at)
+  if (Number.isNaN(date.getTime())) return at
+  const pad = (value: number) => String(value).padStart(2, '0')
+  const time = `${pad(date.getHours())}:${pad(date.getMinutes())}`
+  return props.hours <= 24 ? time : `${pad(date.getMonth() + 1)}-${pad(date.getDate())} ${time}`
+}
+
+function pick(items: MetricsSeries[], metric: string) {
+  return items.find((item) => item.metric === metric)
+}
+
+// 各序列的点数不一致（空桶不产点），所以按时间戳对齐、并集做横轴
+function unionLabels(items: MetricsSeries[]): string[] {
+  const set = new Set<string>()
+  for (const item of items) {
+    for (const point of item.points) set.add(point.at)
+  }
+  return [...set].sort()
+}
+
+function valueByTime(series?: MetricsSeries) {
+  const map = new Map<string, number>()
+  for (const point of series?.points ?? []) map.set(point.at, point.value)
+  return map
+}
+
+const resource = computed(() => {
+  const host = seriesRaw.value.filter((item) => item.scope === 'host')
+  const labels = unionLabels(host)
+  const cpu = valueByTime(pick(host, 'cpu_percent'))
+  const memUsed = valueByTime(pick(host, 'mem_used_bytes'))
+  const memTotal = valueByTime(pick(host, 'mem_total_bytes'))
+  const diskUsed = valueByTime(pick(host, 'disk_used_bytes'))
+  const diskTotal = valueByTime(pick(host, 'disk_total_bytes'))
+
+  const percentOf = (used: Map<string, number>, total: Map<string, number>, at: string) => {
+    const u = used.get(at)
+    const t = total.get(at)
+    if (u === undefined || t === undefined || t <= 0) return null
+    return (u / t) * 100
+  }
+
+  return {
+    labels: labels.map(formatLabel),
+    series: [
+      { name: 'CPU', values: labels.map((at) => cpu.get(at) ?? null) },
+      { name: '内存', values: labels.map((at) => percentOf(memUsed, memTotal, at)) },
+      { name: '磁盘', values: labels.map((at) => percentOf(diskUsed, diskTotal, at)) },
+    ],
+  }
+})
+
+const traffic = computed(() => {
+  const routes = seriesRaw.value.filter((item) => item.scope.startsWith('route:'))
+  const labels = unionLabels(routes)
+  const sumByTime = (metric: string) => {
+    const totals = new Map<string, number>()
+    for (const item of routes) {
+      if (item.metric !== metric) continue
+      for (const point of item.points) {
+        totals.set(point.at, (totals.get(point.at) ?? 0) + point.value)
+      }
+    }
+    return totals
+  }
+  const upload = sumByTime('traffic_in_rate')
+  const download = sumByTime('traffic_out_rate')
+  return {
+    labels: labels.map(formatLabel),
+    series: [
+      { name: '上传', values: labels.map((at) => upload.get(at) ?? null) },
+      { name: '下载', values: labels.map((at) => download.get(at) ?? null) },
+    ],
+  }
+})
+
+onMounted(load)
+watch(() => props.hours, load)
+</script>
+
+<style scoped>
+.trend-panel { display: flex; flex-direction: column; gap: var(--fonu-space-4); }
+.trend-panel--loading { opacity: 0.6; }
+/* 每块自带小标题，卡片被同行撑高时也不会显得内容散掉 */
+.trend-panel__section { display: flex; flex-direction: column; gap: 6px; }
+.trend-panel__label { font-size: 12px; font-weight: 600; color: var(--fonu-text-secondary); }
+.trend-panel__hint { margin: 0; font-size: 12.5px; color: var(--fonu-text-muted); }
+.trend-panel__hint--error { color: var(--fonu-error); }
+</style>

web/src/constants/metrics.ts

@@ -0,0 +1,12 @@
+// 趋势图的时间档：后端按 hours 取窗口、按 buckets 取桶数（点位在该数量级最清楚）
+export interface MetricsRange {
+  label: string
+  hours: number
+  buckets: number
+}
+
+export const METRICS_RANGES: MetricsRange[] = [
+  { label: '1 小时', hours: 1, buckets: 30 },
+  { label: '24 小时', hours: 24, buckets: 48 },
+  { label: '7 天', hours: 24 * 7, buckets: 84 },
+]

web/src/constants/notifyEvents.ts

@@ -71,6 +71,11 @@ export const NOTIFY_EVENT_GROUPS: NotifyEventGroup[] = [
         label: 'Nginx 重载失败',
         hint: '保存反代或证书后 Nginx 未能成功重载',
       },
+      {
+        key: 'on_backup_failure',
+        label: '自动备份失败',
+        hint: '定时备份导出或校验失败——没有备份这件事，往往到需要它的那天才发现',
+      },
       {
         key: 'on_resource_threshold',
         label: '资源占用过高',

web/src/router/index.ts

@@ -11,12 +11,15 @@ import SettingsView from '../views/SettingsView.vue'
 import FrpView from '../views/FrpView.vue'
 import AgentView from '../views/AgentView.vue'
 import ProxyRemoteView from '../views/ProxyRemoteView.vue'
+import StatusPageView from '../views/StatusPageView.vue'
 
 const router = createRouter({
   history: createWebHistory(),
   routes: [
     { path: '/setup', redirect: '/login' },
     { path: '/login', name: 'login', component: LoginView, meta: { public: true } },
+    // 公开状态页：挂到公网给别人看的，不经过登录守卫
+    { path: '/status', name: 'status', component: StatusPageView, meta: { public: true } },
     {
       path: '/',
       component: AppLayout,
@@ -83,6 +86,8 @@ const router = createRouter({
 })
 
 router.beforeEach(async (to) => {
+  // 公开页（状态页）不登录也能打开，也不必为它去问一次登录状态
+  if (to.meta.public && to.name !== 'login') return true
   const status = await api.authStatus()
   if (to.meta.requiresAuth && !status.authenticated) return { name: 'login' }
   if (to.name === 'login' && status.authenticated) return { name: 'dashboard' }

web/src/views/DashboardView.vue

@@ -60,8 +60,10 @@
           <template #value>{{ serviceHealth.value }}</template>
           <p class="stat-desc">{{ serviceHealth.desc }}</p>
           <div class="stat-foot">
-            <div class="stat-foot__line">Fonu / Nginx / DDNS / 证书</div>
-            <div class="stat-foot__muted">上次检查 {{ formatRelativeTime(status?.started_at) || '刚刚' }}</div>
+            <div class="stat-foot__line">Fonu · Nginx · DDNS · 证书</div>
+            <div class="stat-foot__muted">
+              运行 {{ formatUptime(status?.uptime_seconds ?? 0) }} · 上次检查 {{ formatRelativeTime(status?.started_at) || '刚刚' }}
+            </div>
           </div>
         </StatCard>
 
@@ -138,33 +140,34 @@
           </div>
         </FonuCard>
 
-        <FonuCard class="panel health-panel">
+        <FonuCard class="panel trend-card">
           <div class="panel__head">
             <div class="panel-title">
-              <n-icon :component="PulseOutline" class="panel-title__icon panel-title__icon--teal" />
-              <span>运行状态</span>
+              <n-icon :component="StatsChartOutline" class="panel-title__icon panel-title__icon--teal" />
+              <span>资源与流量趋势</span>
+            </div>
+            <div class="trend-range">
+              <n-button
+                v-for="item in METRICS_RANGES"
+                :key="item.hours"
+                size="tiny"
+                quaternary
+                :type="trendHours === item.hours ? 'primary' : 'default'"
+                @click="trendHours = item.hours"
+              >
+                {{ item.label }}
+              </n-button>
             </div>
-            <router-link :to="{ name: 'settings' }" class="card-link">
-              查看详情
-              <n-icon :component="ChevronForwardOutline" />
-            </router-link>
           </div>
-          <div class="panel__body health-list">
-            <div v-for="item in healthItems" :key="item.name" class="health-item">
-              <div class="health-item__icon" :class="`health-item__icon--${item.tone}`">
-                <n-icon :component="item.icon" />
-              </div>
-              <div class="health-item__main">
-                <span class="health-item__name">{{ item.name }}</span>
-                <span class="health-item__meta">{{ item.desc }}</span>
-                <span class="health-item__detail">{{ item.meta }}</span>
-              </div>
-              <StatusBadge :value="item.status" :text="item.label" />
-            </div>
+          <div class="panel__body">
+            <MetricsTrendPanel :hours="trendHours" />
           </div>
         </FonuCard>
 
-        <FonuCard class="panel">
+      </div>
+
+      <div class="ops-row">
+        <FonuCard class="panel perf-panel">
           <div class="panel__head">
             <div class="panel-title">
               <n-icon :component="FlashOutline" class="panel-title__icon panel-title__icon--amber" />
@@ -201,9 +204,7 @@
             </div>
           </div>
         </FonuCard>
-      </div>
 
-      <div class="ops-row">
         <FonuCard class="panel">
           <div class="panel__head">
             <div class="panel-title">
@@ -352,6 +353,7 @@ import {
   PulseOutline,
   ServerOutline,
   ShieldCheckmarkOutline,
+  StatsChartOutline,
   SwapVerticalOutline,
   WifiOutline,
 } from '@vicons/ionicons5'
@@ -379,6 +381,11 @@ import FonuCard from '../components/FonuCard.vue'
 import LoadError from '../components/LoadError.vue'
 import MiniBarChart from '../components/MiniBarChart.vue'
 import MiniTrafficChart from '../components/MiniTrafficChart.vue'
+import MetricsTrendPanel from '../components/MetricsTrendPanel.vue'
+import { METRICS_RANGES } from '../constants/metrics'
+
+// 「资源与流量趋势」的时间档：切换即让子组件按新窗口重新取数
+const trendHours = ref(24)
 import StatCard from '../components/StatCard.vue'
 import StatusBadge from '../components/StatusBadge.vue'
 import {
@@ -582,6 +589,7 @@ const remoteHealthMeta = computed(() => {
   if (summary.dns_failed) issues.push(`DNS ${summary.dns_failed}`)
   if (summary.cert_missing) issues.push(`证书 ${summary.cert_missing}`)
   if (summary.tunnel_down) issues.push(`隧道 ${summary.tunnel_down}`)
+  if (summary.tunnel_unknown) issues.push(`隧道无法判定 ${summary.tunnel_unknown}`)
   if (summary.service_down) issues.push(`服务 ${summary.service_down}`)
   const parts = [`${summary.healthy}/${summary.routes} 条健康`]
   if (issues.length > 0) parts.push(issues.join(' · '))
@@ -1392,7 +1400,7 @@ html.dark .hero-art {
 
 .ops-row {
   display: grid;
-  grid-template-columns: repeat(3, minmax(0, 1fr));
+  grid-template-columns: repeat(4, minmax(0, 1fr));
   gap: var(--fonu-space-4);
   margin-bottom: var(--fonu-space-4);
 }
@@ -1405,6 +1413,9 @@ html.dark .hero-art {
   align-items: stretch;
 }
 
+/* 趋势卡片占两列：这样「性能」才能跟「系统资源」等一起排到下一行的四列里 */
+.trend-card { grid-column: span 2; }
+
 .metrics-row > .fonu-card {
   height: 100%;
 }
@@ -1446,6 +1457,9 @@ html.dark .hero-art {
   color: #14b8a6;
 }
 
+/* 趋势卡片表头里的时间档切换（对齐「实时流量」的 range-tag 位置） */
+.trend-range { display: flex; gap: 2px; }
+
 .range-tag {
   background: var(--fonu-bg) !important;
   color: var(--fonu-text-secondary) !important;

web/src/views/ProxyRemoteView.vue

@@ -422,7 +422,7 @@ import StatusBadge from '../components/StatusBadge.vue'
 import { api } from '../api/client'
 import type {
   CertificateRecord, FrpAgentRouteDetail, FrpAgentRouteHealth, FrpAgentStatus, FrpProxy, FrpProxyTraffic,
-  FrpRouteDriftReport, FrpServer, NginxConfigVersionEntry,
+  FrpRouteDriftReport, FrpRouteUptime, FrpServer, NginxConfigVersionEntry,
 } from '../api/types'
 import { formatBytes, formatDate, formatRate, formatRelativeTime } from '../utils/format'
 import { copyText } from '../utils/clipboard'
@@ -447,6 +447,7 @@ const trafficErrors = ref<Record<string, string>>({})
 const agentStatus = ref<FrpAgentStatus | null>(null)
 const statusLoaded = ref(false)
 const routeDrift = ref<FrpRouteDriftReport | null>(null)
+const routeUptime = ref<FrpRouteUptime[]>([])
 const certificates = ref<CertificateRecord[]>([])
 const redeploying = ref(false)
 const settingsModal = ref(false)
@@ -552,6 +553,7 @@ async function refreshAll(options: { silent?: boolean } = { silent: true }) {
     track('路由文件', () => api.getFrpAgentRoutes(current.id), (value) => { routeDetails.value = value }),
     track('健康检查', () => api.getFrpAgentRouteHealth(current.id), (value) => { routeHealth.value = value }),
     track('配置漂移', () => api.getFrpAgentRouteDrift(current.id), (value) => { routeDrift.value = value }),
+    track('可用率', () => api.getFrpRouteUptime(), (value) => { routeUptime.value = value.items ?? [] }),
     track('证书列表', () => api.listCertificates(), (value) => { certificates.value = value }),
     track('流量采集', () => api.listFrpProxiesTraffic(), (value) => {
       proxyTraffic.value = value.items ?? {}
@@ -611,18 +613,29 @@ function certSummary(domain: string) {
   return `Fonu 证书库：有（剩余 ${record.days_left} 天）`
 }
 
-// 健康四段（按域名）：DNS / 证书 / 隧道 / 服务
+// 健康四段（按域名）：DNS / 证书 / 隧道 / 服务。
+// unknown 表示这一段判不出来（frps 管理接口未配或不可用），UI 必须与「失败」区分开，
+// 否则用户会看到一条红色的「隧道」却怎么查都没问题。
 function healthOf(domain: string) {
   const health = routeHealth.value.find((item) => item.domain === domain)
+  const tunnelUnknown = health?.tunnel_known === false
   return [
-    { label: 'DNS', ok: health?.dns_ok ?? false, detail: health?.dns_detail || (health?.dns_ok ? '已指向服务端' : '未指向服务端或未检测') },
+    { label: 'DNS', ok: health?.dns_ok ?? false, unknown: false, detail: health?.dns_detail || (health?.dns_ok ? '已指向服务端' : '未指向服务端或未检测') },
     {
       label: '证书',
       ok: health?.cert_ok ?? false,
+      unknown: false,
       detail: `${health?.cert_detail || (health?.cert_ok ? '证书已覆盖该域名' : '未发现该域名的证书')}｜${certSummary(domain)}`,
     },
-    { label: '隧道', ok: health?.tunnel_ok ?? false, detail: health?.tunnel_detail || (health?.tunnel_ok ? '已注册到 frps' : 'frps 未发现该规则的隧道') },
-    { label: '服务', ok: health?.service_ok ?? false, detail: health?.service_ok ? '内网服务可达' : '内网服务不可达' },
+    {
+      label: '隧道',
+      ok: health?.tunnel_ok ?? false,
+      unknown: tunnelUnknown,
+      detail: tunnelUnknown
+        ? `无法判定：${health?.tunnel_detail || 'frps 管理接口未配置或不可用'}（不代表隧道不通）`
+        : health?.tunnel_detail || (health?.tunnel_ok ? '已注册到 frps' : 'frps 未发现该规则的隧道'),
+    },
+    { label: '服务', ok: health?.service_ok ?? false, unknown: false, detail: health?.service_ok ? '内网服务可达' : '内网服务不可达' },
   ]
 }
 
@@ -670,10 +683,34 @@ async function redeployAll() {
   }
 }
 
+// 可用率：由后台巡检落库的状态变更推导；没有记录时返回 undefined（UI 要写「暂无数据」）
+function uptimeOf(candidate: FrpProxy) {
+  const domain = domainsOf(candidate)[0]
+  if (!domain) return undefined
+  return routeUptime.value.find((item) => item.domain === domain)
+}
+
+function uptimeDetail(stat: FrpRouteUptime) {
+  const parts = [
+    `可用率 ${stat.uptime_pct.toFixed(1)}%`,
+    `不可用 ${stat.down_minutes} 分钟`,
+    `无法判定 ${stat.unknown_minutes} 分钟`,
+    `观测 ${stat.covered_minutes} 分钟`,
+  ]
+  if (stat.incidents.length > 0) {
+    const list = stat.incidents
+      .map((item) => `${formatDate(item.from)}${item.to ? ` → ${formatDate(item.to)}` : ' → 至今'}（${item.reason || '未知环节'}，${item.minutes} 分钟）`)
+      .join('；')
+    parts.push(`不可用区间：${list}`)
+  }
+  return parts.join('｜')
+}
+
 function isHealthy(candidate: FrpProxy) {
   const domains = domainsOf(candidate)
   if (!domains.length) return false
-  return domains.every((domain) => healthOf(domain).every((item) => item.ok))
+  // 判不出来的那一段不能算作「不健康」：否则 dashboard 一挂，整页规则都会变红
+  return domains.every((domain) => healthOf(domain).every((item) => item.ok || item.unknown))
 }
 
 // 域名快捷操作：复制 / 新窗口打开（http 规则走 http，https 规则走 https）
@@ -741,7 +778,18 @@ const columns = computed<DataTableColumns<FrpProxy>>(() => [
     title: '健康（DNS · 证书 · 隧道 · 服务）', key: 'health', width: 260,
     render: (row) => h('div', { class: 'cell-health' }, domainsOf(row).flatMap((domain) =>
       healthOf(domain).map((item) => h('span', { title: item.detail },
-        [h(StatusBadge, { kind: item.ok ? 'success' : 'error', text: item.label })])))),
+        [h(StatusBadge, { kind: item.unknown ? 'warning' : item.ok ? 'success' : 'error', text: item.label })])))),
+  },
+  {
+    title: '可用率 24h', key: 'uptime', width: 120, align: 'right',
+    render: (row) => {
+      const stat = uptimeOf(row)
+      // 没有巡检记录时明说「暂无数据」：直接显示 100% 会让人以为一直没问题
+      if (!stat) return h('span', { class: 'mono cell-muted' }, '暂无数据')
+      const kind = stat.state === 'down' ? 'error' : stat.state === 'up' ? 'success' : 'warning'
+      return h('span', { class: 'mono', title: uptimeDetail(stat) },
+        [h(StatusBadge, { kind, text: `${stat.uptime_pct.toFixed(1)}%` })])
+    },
   },
   {
     title: '连接', key: 'conns', width: 80, align: 'right',

web/src/views/SettingsView.vue

@@ -106,6 +106,66 @@
             </div>
           </n-upload>
         </div>
+        <div class="backup-auto">
+          <div class="form-switch-row">
+            <div class="form-switch-row__text">
+              <div class="form-switch-row__label">自动备份</div>
+              <div class="form-switch-row__hint">
+                每天自动备份一份到服务器，超过保留份数后自动清理最旧的（重启不会重复备份）
+              </div>
+            </div>
+            <n-switch v-model:value="backupAutoEnabled" />
+          </div>
+          <div class="backup-auto__actions">
+            <div class="settings-field backup-auto__keep">
+              <label class="settings-field__label">保留份数</label>
+              <n-input-number v-model:value="backupKeepCount" :min="1" :max="60" class="settings-field__input" />
+            </div>
+            <n-button
+              size="small"
+              :loading="backupBusy === 'create'"
+              :disabled="backupBusy !== null"
+              @click="createBackupArchive"
+            >
+              立即备份
+            </n-button>
+          </div>
+        </div>
+
+        <div class="backup-list">
+          <div v-for="archive in backupArchives" :key="archive.name" class="backup-row">
+            <div class="backup-row__main">
+              <span class="mono">{{ formatDate(archive.mod_time) }}</span>
+              <span class="backup-row__size">{{ formatBytes(archive.size) }}</span>
+            </div>
+            <div class="backup-row__actions">
+              <n-button
+                size="tiny"
+                quaternary
+                :loading="backupBusy === `download:${archive.name}`"
+                :disabled="backupBusy !== null"
+                @click="downloadBackupArchive(archive)"
+              >
+                下载
+              </n-button>
+              <n-popconfirm @positive-click="restoreBackupArchive(archive)">
+                <template #trigger>
+                  <n-button size="tiny" quaternary type="warning" :disabled="backupBusy !== null">恢复</n-button>
+                </template>
+                恢复会覆盖当前的数据库、证书与 Nginx 配置，确定继续？
+              </n-popconfirm>
+              <n-popconfirm @positive-click="deleteBackupArchive(archive)">
+                <template #trigger>
+                  <n-button size="tiny" quaternary type="error" :disabled="backupBusy !== null">删除</n-button>
+                </template>
+                删除这份备份？
+              </n-popconfirm>
+            </div>
+          </div>
+          <p v-if="backupError" class="field-hint field-hint--error">{{ backupError }}</p>
+          <p v-else-if="backupArchives.length === 0" class="field-hint">还没有留在服务器上的备份。</p>
+        </div>
+
         <p class="field-hint data-note">恢复配置将覆盖当前数据，操作前请确保已备份。</p>
       </FonuCard>
         </div>
@@ -676,6 +736,34 @@
         </div>
         <p v-else-if="!tokenError" class="field-hint">还没有令牌。</p>
       </FonuCard>
+
+      <FonuCard title="公开状态页" subtitle="给外部看的只读页面（默认关闭）">
+        <p class="field-hint">
+          开启后 <code>/status</code> 任何人都能访问，只展示域名与 24 小时可用率——不含内网地址、端口与证书路径。
+          建议设一个访问码，它会让页面需要带码才能打开。
+        </p>
+        <div class="form-switch-row">
+          <div class="form-switch-row__text">
+            <div class="form-switch-row__label">开启状态页</div>
+            <div class="form-switch-row__hint">关闭时接口一律返回 404，且匿名访问按 IP 限流</div>
+          </div>
+          <n-switch v-model:value="statusPageEnabled" />
+        </div>
+        <div class="settings-field status-page-field">
+          <ConfiguredSecretField
+            v-model="statusPageCode"
+            label="访问码"
+            :configured="statusPageConfigured"
+            placeholder="留空表示不需要访问码"
+          />
+        </div>
+        <div class="status-page-actions">
+          <n-button size="small" :disabled="!statusPageEnabled" @click="openStatusPage">
+            打开状态页
+          </n-button>
+          <span class="field-hint">访问码只存 SHA-256，忘了只能重设。</span>
+        </div>
+      </FonuCard>
         </div>
       </n-tab-pane>
     </n-tabs>
@@ -715,6 +803,7 @@ import {
 import { api } from '../api/client'
 import type {
   ApiToken,
+  BackupArchive,
   ChinaCIDRStatus,
   GlobalNginxView,
   NginxConfigVersionEntry,
@@ -761,6 +850,9 @@ import { formatBytes, formatDate, formatRelativeTime } from '../utils/format'
 import type { StatusKind } from '../utils/status'
 
 const message = useMessage()
+
+// 与后端 backup.DefaultKeepCount 一致：设置项没填时两边都用 7
+const DEFAULT_BACKUP_KEEP_COUNT = 7
 const { setThemeMode } = useTheme()
 const saving = ref(false)
 const loading = ref(false)
@@ -769,6 +861,18 @@ const changingPassword = ref(false)
 const exporting = ref(false)
 const restoring = ref(false)
 
+// 备份：开关与保留份数走设置项（随「保存设置」提交），备份列表单独读
+const backupAutoEnabled = ref(true)
+const backupKeepCount = ref(DEFAULT_BACKUP_KEEP_COUNT)
+const backupArchives = ref<BackupArchive[]>([])
+const backupBusy = ref<string | null>(null)
+const backupError = ref('')
+
+// 公开状态页：开关与访问码走设置项（访问码按「掩码往返」处理）
+const statusPageEnabled = ref(false)
+const statusPageCode = ref('')
+const statusPageConfigured = ref(false)
+
 const form = reactive({
   theme: 'system',
   timezone: 'Asia/Shanghai',
@@ -791,6 +895,7 @@ const notifyEventFlags = reactive<Record<string, boolean>>({
   on_frps_down: false,
   on_agent_unreachable: false,
   on_route_drift: false,
+  on_backup_failure: true,
 })
 const notifyIPFrequentThreshold = ref(100)
 const notifyIPFrequentWindowSec = ref(60)
@@ -996,6 +1101,12 @@ function applySettingsToForm(settings: Record<string, string>) {
   ddnsInterval.value = Number(settings.ddns_check_interval_minutes ?? 5)
   certThreshold.value = Number(settings.cert_renew_threshold_days ?? 30)
   logRetention.value = Number(settings.log_retention_days ?? 30)
+  // 未配置时按默认值处理：自动备份是默认开的
+  backupAutoEnabled.value = settings.backup_auto_enabled !== '0'
+  backupKeepCount.value = Number(settings.backup_keep_count || DEFAULT_BACKUP_KEEP_COUNT)
+  statusPageEnabled.value = settings.status_page_enabled === '1'
+  statusPageCode.value = settings.status_page_code ?? ''
+  statusPageConfigured.value = statusPageCode.value === MASKED_SECRET
   acmeEmail.value = settings.acme_email ?? ''
   zerosslHasKey.value = Boolean(settings.zerossl_api_key?.trim())
   zerosslApiKey.value = ''
@@ -1308,6 +1419,7 @@ function applyNotifySettings(settings: Record<string, string>) {
     notifyEventFlags.on_frps_down = flagOptIn('notify_on_frps_down')
     notifyEventFlags.on_agent_unreachable = flagOptIn('notify_on_agent_unreachable')
     notifyEventFlags.on_route_drift = flagOptIn('notify_on_route_drift')
+    notifyEventFlags.on_backup_failure = flagOn('notify_on_backup_failure')
   } else {
     const legacyDDNS = flagOn('notify_on_ddns_error')
     const legacyCert = flagOn('notify_on_cert_error')
@@ -1324,6 +1436,7 @@ function applyNotifySettings(settings: Record<string, string>) {
     notifyEventFlags.on_frps_down = false
     notifyEventFlags.on_agent_unreachable = false
     notifyEventFlags.on_route_drift = false
+    notifyEventFlags.on_backup_failure = true
   }
   notifyIPFrequentThreshold.value = Number(settings.notify_ip_frequent_threshold || 100)
   notifyIPFrequentWindowSec.value = Number(settings.notify_ip_frequent_window_sec || 60)
@@ -1446,9 +1559,14 @@ function buildSavePayload() {
     notify_on_frps_down: notifyEventFlags.on_frps_down ? '1' : '0',
     notify_on_agent_unreachable: notifyEventFlags.on_agent_unreachable ? '1' : '0',
     notify_on_route_drift: notifyEventFlags.on_route_drift ? '1' : '0',
+    notify_on_backup_failure: notifyEventFlags.on_backup_failure ? '1' : '0',
     notify_frps_fail_threshold: String(notifyFrpsFailThreshold.value || DEFAULT_FRPS_FAIL_THRESHOLD),
     notify_agent_fail_threshold: String(notifyAgentFailThreshold.value || DEFAULT_AGENT_FAIL_THRESHOLD),
     notify_drift_cooldown_hours: String(notifyDriftCooldownHours.value || DEFAULT_DRIFT_COOLDOWN_HOURS),
+    backup_auto_enabled: backupAutoEnabled.value ? '1' : '0',
+    backup_keep_count: String(backupKeepCount.value || DEFAULT_BACKUP_KEEP_COUNT),
+    status_page_enabled: statusPageEnabled.value ? '1' : '0',
+    status_page_code: statusPageCode.value.trim(),
     notify_cpu_threshold: String(notifyCPUThreshold.value || DEFAULT_CPU_THRESHOLD),
     notify_memory_threshold: String(notifyMemoryThreshold.value || DEFAULT_MEMORY_THRESHOLD),
     notify_disk_threshold: String(notifyDiskThreshold.value || DEFAULT_DISK_THRESHOLD),
@@ -1526,6 +1644,63 @@ async function changePassword() {
   }
 }
 
+async function createBackupArchive() {
+  if (backupBusy.value) return
+  backupBusy.value = 'create'
+  try {
+    await api.createBackupArchive()
+    await loadBackupArchives()
+    message.success('已创建一份备份')
+  } catch (error) {
+    message.error(error instanceof Error ? error.message : '备份失败')
+  } finally { backupBusy.value = null }
+}
+
+async function loadBackupArchives() {
+  try {
+    const result = await api.listBackupArchives()
+    backupArchives.value = result.archives ?? []
+    backupError.value = ''
+  } catch (error) {
+    backupError.value = error instanceof Error ? error.message : '读取备份列表失败'
+  }
+}
+
+async function downloadBackupArchive(archive: BackupArchive) {
+  backupBusy.value = `download:${archive.name}`
+  try {
+    await api.downloadBackupArchive(archive.name)
+  } catch (error) {
+    message.error(error instanceof Error ? error.message : '下载失败')
+  } finally { backupBusy.value = null }
+}
+
+async function restoreBackupArchive(archive: BackupArchive) {
+  backupBusy.value = `restore:${archive.name}`
+  try {
+    const result = await api.restoreBackupArchive(archive.name)
+    message.success(result.message || '备份已恢复，建议重启 Fonu')
+  } catch (error) {
+    message.error(error instanceof Error ? error.message : '恢复失败')
+  } finally { backupBusy.value = null }
+}
+
+async function deleteBackupArchive(archive: BackupArchive) {
+  backupBusy.value = `delete:${archive.name}`
+  try {
+    await api.deleteBackupArchive(archive.name)
+    await loadBackupArchives()
+    message.success('已删除该备份')
+  } catch (error) {
+    message.error(error instanceof Error ? error.message : '删除失败')
+  } finally { backupBusy.value = null }
+}
+
+// 存了访问码时会先要求输入，所以这里只开页面、不带参数
+function openStatusPage() {
+  window.open('/status', '_blank', 'noopener')
+}
+
 async function exportBackup() {
   exporting.value = true
   try {
@@ -1554,6 +1729,7 @@ async function onRestoreFile({ file }: { file: UploadFileInfo }) {
 onMounted(() => {
   void load()
   void loadApiTokens()
+  void loadBackupArchives()
 })
 </script>
 
@@ -1694,6 +1870,27 @@ onMounted(() => {
 .config-versions__hint { font-size: 12px; color: var(--fonu-text-muted); line-height: 1.6; }
 .config-versions__error { margin: 8px 0 0; font-size: 12px; color: var(--fonu-error); line-height: 1.6; }
 
+/* 自动备份：开关 + 保留份数 + 备份列表 */
+.backup-auto {
+  display: grid; gap: var(--fonu-space-3);
+  margin-top: var(--fonu-space-4); padding-top: var(--fonu-space-4);
+  border-top: 1px solid var(--fonu-border);
+}
+.backup-auto__actions { display: flex; align-items: end; gap: var(--fonu-space-3); }
+.backup-auto__keep { max-width: 160px; }
+.backup-list { display: grid; gap: 6px; margin-top: var(--fonu-space-3); }
+.backup-row {
+  display: flex; align-items: center; justify-content: space-between; gap: var(--fonu-space-3);
+  padding: 6px var(--fonu-space-3); border: 1px solid var(--fonu-border); border-radius: var(--fonu-radius-sm);
+}
+.backup-row__main { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
+.backup-row__size { font-size: 12px; color: var(--fonu-text-muted); }
+.backup-row__actions { display: flex; align-items: center; gap: 4px; flex: none; }
+
+/* 公开状态页：访问码 + 打开链接 */
+.status-page-field { margin-top: var(--fonu-space-3); }
+.status-page-actions { display: flex; align-items: center; gap: var(--fonu-space-3); margin-top: var(--fonu-space-3); flex-wrap: wrap; }
+
 /* API Token：创建区一行放四项，列表一行一项 */
 /* 必须带上 .settings-fields 提高优先级：那条纵向 flex 规则在样式表里位置更靠后，
    否则 display 会被它覆盖回 flex-column（子项被推到右侧、整卡变很高） */

web/src/views/StatusPageView.vue

@@ -0,0 +1,113 @@
+<template>
+  <div class="status-page">
+    <div class="status-page__card">
+      <header class="status-page__head">
+        <h1 class="status-page__title">{{ page?.title || '服务状态' }}</h1>
+        <n-button size="small" :loading="loading" @click="load">刷新</n-button>
+      </header>
+
+      <p v-if="page" class="status-page__meta">
+        共 {{ page.routes.length }} 项 · 正常 {{ page.up }} · 异常 {{ page.down }} · 无法判定 {{ page.unknown }}
+        <span v-if="page.checked_at">｜数据截至 {{ formatDate(page.checked_at) }}</span>
+      </p>
+
+      <div v-if="needsCode" class="status-page__code">
+        <n-input v-model:value="code" placeholder="请输入访问码" @keyup.enter="load" />
+        <n-button type="primary" :loading="loading" @click="load">查看</n-button>
+      </div>
+
+      <p v-else-if="error" class="status-page__error">{{ error }}</p>
+
+      <div v-if="page && page.routes.length" class="status-page__list">
+        <div v-for="route in page.routes" :key="route.domain" class="status-row">
+          <StatusBadge :kind="kindOf(route.state)" :text="stateText(route.state)" />
+          <span class="status-row__domain mono">{{ route.domain }}</span>
+          <span class="status-row__uptime mono">{{ route.uptime_pct.toFixed(1) }}%（24h）</span>
+        </div>
+      </div>
+      <p v-else-if="page && !error" class="status-page__hint">还没有巡检记录。</p>
+
+      <p class="status-page__hint status-page__hint--foot">本页只展示域名与可用率，由 Fonu 生成。</p>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { onMounted, ref } from 'vue'
+import { NButton, NInput } from 'naive-ui'
+import StatusBadge from '../components/StatusBadge.vue'
+import { api } from '../api/client'
+import type { StatusPagePayload } from '../api/types'
+import type { StatusKind } from '../utils/status'
+import { formatDate } from '../utils/format'
+
+const page = ref<StatusPagePayload | null>(null)
+const code = ref('')
+const loading = ref(false)
+const error = ref('')
+const needsCode = ref(false)
+
+async function load() {
+  loading.value = true
+  try {
+    page.value = await api.getStatusPage(code.value.trim())
+    error.value = ''
+    needsCode.value = false
+  } catch (err) {
+    page.value = null
+    // 状态页关闭与访问码错误都返回 404（不向匿名访问者确认页面是否存在）
+    error.value = code.value.trim() ? '访问码不正确或状态页未开启' : '状态页未开启'
+    needsCode.value = true
+  } finally {
+    loading.value = false
+  }
+}
+
+function kindOf(state: string): StatusKind {
+  if (state === 'up') return 'success'
+  if (state === 'down') return 'error'
+  return 'warning'
+}
+
+function stateText(state: string): string {
+  if (state === 'up') return '正常'
+  if (state === 'down') return '异常'
+  return '无法判定'
+}
+
+onMounted(load)
+</script>
+
+<style scoped>
+.status-page {
+  min-height: 100vh;
+  display: flex;
+  justify-content: center;
+  padding: var(--fonu-space-6) var(--fonu-space-4);
+  background: var(--fonu-bg);
+}
+.status-page__card {
+  width: min(680px, 100%);
+  align-self: flex-start;
+  padding: var(--fonu-space-5);
+  background: var(--fonu-surface);
+  border: 1px solid var(--fonu-border);
+  border-radius: var(--fonu-radius);
+  box-shadow: var(--fonu-shadow);
+}
+.status-page__head { display: flex; align-items: center; justify-content: space-between; gap: var(--fonu-space-3); }
+.status-page__title { margin: 0; font-size: 18px; color: var(--fonu-text); }
+.status-page__meta { margin: 8px 0 0; font-size: 12.5px; color: var(--fonu-text-secondary); }
+.status-page__code { display: flex; gap: 8px; margin-top: var(--fonu-space-4); }
+.status-page__error { margin: var(--fonu-space-4) 0 0; font-size: 13px; color: var(--fonu-error); }
+.status-page__list { display: grid; gap: 6px; margin-top: var(--fonu-space-4); }
+.status-row {
+  display: flex; align-items: center; gap: var(--fonu-space-3);
+  padding: 8px var(--fonu-space-3);
+  border: 1px solid var(--fonu-border); border-radius: var(--fonu-radius-sm);
+}
+.status-row__domain { flex: 1; min-width: 0; overflow-wrap: anywhere; }
+.status-row__uptime { flex: none; font-size: 12.5px; color: var(--fonu-text-secondary); }
+.status-page__hint { margin: var(--fonu-space-3) 0 0; font-size: 12.5px; color: var(--fonu-text-muted); }
+.status-page__hint--foot { margin-top: var(--fonu-space-5); }
+</style>