feat(admin): 访客列表页

- 访客管理页：useTable 分页表（后端固定 20/页，paginationKey 映射 page，
  size 不发送），列含 截断 ID+复制 / 国旗 emoji+国家·省市 / 设备主行+os·browser
  小字 / 首访·最近访问（共享 formatDateTime，上海时间直显）/ 访问次数 /
  活跃天数 / 总停留 formatStay / 首触·最近来源 / 在线绿点；行点击进详情路由
- 筛选栏：关键词（visitor_id/IP 前缀）回车或查询触发、设备下拉、国家精确、
  在线开关（online='1' 哨兵）、日期范围 date_from/date_to、显示爬虫开关
  （默认排除）；筛选变化重置 page=1，分页切换保留筛选
- 共享工具提取 admin/src/utils/tracker：formatDateTime/formatStay/countryFlag，
  site 页改引用；formatStay 智能省略（0 单位不显示，全 0 显示 0秒）
- 红线：无 v-html，访客数据不绑 href/src；加载/空态齐全（错误态走请求层统一 toast）

Co-Authored-By: Claude Code <noreply@anthropic.com>

admin/src/utils/tracker/index.ts

@@ -0,0 +1,57 @@
+/**
+ * 访客统计共享格式化工具（列表/详情页复用）
+ *
+ * 后端时间戳已统一 timezone.localtime().isoformat()（上海时间）序列化，
+ * 前端切串直显即可，不做时区换算。
+ */
+
+/** 国家 → 国旗 emoji（ip2region 中国 IP 为中文"中国"，海外为英文名；未命中默认 🌐） */
+const COUNTRY_FLAGS: Record<string, string> = {
+  中国: '🇨🇳',
+  'United States': '🇺🇸',
+  Japan: '🇯🇵',
+  'South Korea': '🇰🇷',
+  Singapore: '🇸🇬',
+  'United Kingdom': '🇬🇧',
+  Germany: '🇩🇪',
+  France: '🇫🇷',
+  Canada: '🇨🇦',
+  Australia: '🇦🇺',
+  Russia: '🇷🇺',
+  India: '🇮🇳',
+  Brazil: '🇧🇷',
+  Vietnam: '🇻🇳',
+  Thailand: '🇹🇭',
+  Malaysia: '🇲🇾',
+  Indonesia: '🇮🇩',
+  Philippines: '🇵🇭',
+  Netherlands: '🇳🇱',
+  Italy: '🇮🇹',
+  Spain: '🇪🇸',
+  Turkey: '🇹🇷',
+  Iran: '🇮🇷'
+}
+
+/** 国家名 → 国旗 emoji（空/未命中返回 🌐） */
+export const countryFlag = (country?: string | null): string =>
+  (country && COUNTRY_FLAGS[country]) || '🌐'
+
+/** ISO 时间 → YYYY-MM-DD HH:mm（后端已是上海时间；空值显示 —） */
+export const formatDateTime = (iso?: string | null): string =>
+  iso ? iso.replace('T', ' ').slice(0, 16) : '—'
+
+/** 毫秒 → x天x小时x分x秒（智能省略：为 0 的单位不显示；全 0 / 不足 1 秒显示 0秒） */
+export const formatStay = (ms?: number | null): string => {
+  const totalSec = Math.max(0, Math.floor((ms ?? 0) / 1000))
+  const days = Math.floor(totalSec / 86400)
+  const hours = Math.floor((totalSec % 86400) / 3600)
+  const minutes = Math.floor((totalSec % 3600) / 60)
+  const seconds = totalSec % 60
+  const parts: string[] = []
+  if (days) parts.push(`${days}天`)
+  if (hours) parts.push(`${hours}小时`)
+  if (minutes) parts.push(`${minutes}分`)
+  // 秒恒显示（含 0），避免"0秒/不足 1 秒"整行变空
+  if (seconds || !parts.length) parts.push(`${seconds}秒`)
+  return parts.join('')
+}

admin/src/views/tracker/site/index.vue

@@ -78,6 +78,7 @@
   } from '@/api/tracker/sites'
   import { ElTag, ElButton, ElMessageBox } from 'element-plus'
   import type { FormInstance, FormRules } from 'element-plus'
+  import { formatDateTime } from '@/utils/tracker'
 
   defineOptions({ name: 'TrackerSite' })
 
@@ -145,8 +146,6 @@
     }
   }
 
-  const formatDateTime = (iso: string) => (iso ? iso.replace('T', ' ').slice(0, 19) : '—')
-
   const { columns, columnChecks, data, loading, refreshData } = useTable({
     core: {
       apiFn: getSites,

admin/src/views/tracker/visitor/index.vue

@@ -1,10 +1,301 @@
+<!-- 访客统计 · 访客列表 -->
+<!-- 筛选区外置独立卡片（dashboard 同款），避免挤占 ArtTable 的高度计算预算 -->
 <template>
-  <div class="p-5">
-    <h2 class="mb-3 text-lg font-semibold">访客管理</h2>
-    <div>Task 20 填充</div>
+  <div class="visitor-page art-full-height">
+    <!-- 筛选栏 -->
+    <div class="art-card flex-c flex-wrap gap-x-4 gap-y-3 mb-3 px-5 py-4">
+      <ElInput
+        v-model="filters.search"
+        class="w-60"
+        placeholder="访客 ID / IP 前缀"
+        clearable
+        @keyup.enter="applyFilters"
+        @clear="applyFilters"
+      />
+      <ElSelect
+        v-model="filters.deviceType"
+        class="w-32"
+        placeholder="全部设备"
+        clearable
+        @change="applyFilters"
+      >
+        <ElOption label="PC" value="PC" />
+        <ElOption label="手机" value="手机" />
+        <ElOption label="平板" value="平板" />
+      </ElSelect>
+      <ElInput
+        v-model="filters.country"
+        class="w-44"
+        placeholder="国家（精确匹配）"
+        clearable
+        @keyup.enter="applyFilters"
+        @clear="applyFilters"
+      />
+      <div class="flex-c gap-1.5">
+        <span class="text-sm text-g-600">在线</span>
+        <ElSwitch v-model="filters.online" @change="applyFilters" />
+      </div>
+      <ElDatePicker
+        v-model="filters.dateRange"
+        type="daterange"
+        class="w-64"
+        value-format="YYYY-MM-DD"
+        range-separator="至"
+        start-placeholder="最近访问起"
+        end-placeholder="最近访问止"
+        unlink-panels
+        @change="applyFilters"
+      />
+      <ElTooltip
+        content="默认隐藏爬虫访客（按 UA 识别）；打开后列表包含爬虫，供管理员排查"
+        placement="top"
+      >
+        <div class="flex-c gap-1.5">
+          <span class="text-sm text-g-600">显示爬虫</span>
+          <ElSwitch v-model="filters.showBot" @change="applyFilters" />
+        </div>
+      </ElTooltip>
+      <div class="ml-auto flex-c gap-2">
+        <ElButton type="primary" @click="applyFilters">查询</ElButton>
+        <ElButton @click="resetFilters">重置</ElButton>
+      </div>
+    </div>
+
+    <!-- 访客表格 -->
+    <ElCard class="art-table-card">
+      <ArtTableHeader v-model:columns="columnChecks" :loading="loading" @refresh="refreshData" />
+      <ArtTable
+        :loading="loading"
+        :data="data"
+        :columns="columns"
+        :pagination="pagination"
+        :row-class-name="() => 'visitor-row'"
+        :pagination-options="{ layout: 'total, prev, pager, next, jumper' }"
+        empty-text="暂无访客数据"
+        @row-click="handleRowClick"
+        @pagination:size-change="handleSizeChange"
+        @pagination:current-change="handleCurrentChange"
+      />
+    </ElCard>
   </div>
 </template>
 
 <script setup lang="ts">
-  // 占位页：Task 20 填充真实内容（访客列表 + 筛选 + 分页）
+  import { ElButton } from 'element-plus'
+  import { useTable } from '@/hooks/core/useTable'
+  import { getVisitors, type VisitorListParams, type VisitorRow } from '@/api/tracker/visitors'
+  import { countryFlag, formatDateTime, formatStay } from '@/utils/tracker'
+
+  defineOptions({ name: 'TrackerVisitor' })
+
+  // 复制完整 visitor_id（clipboard API 不可用时走 execCommand 兜底）
+  const { copy } = useClipboard({ legacy: true })
+
+  const copyVisitorId = async (visitorId: string) => {
+    try {
+      await copy(visitorId)
+      ElMessage.success('访客 ID 已复制到剪贴板')
+    } catch {
+      ElMessage.error('复制失败，请手动选择复制')
+    }
+  }
+
+  // 行点击 → 详情页（query 携带 visitor_id；详情页为 Task 21）
+  const router = useRouter()
+  const handleRowClick = (row: VisitorRow) => {
+    router.push({ path: '/tracker/visitor/detail', query: { visitor_id: row.visitor_id } })
+  }
+
+  // ---------- 筛选 ----------
+  const filters = reactive({
+    search: '',
+    deviceType: '',
+    country: '',
+    online: false,
+    showBot: false,
+    dateRange: null as [string, string] | null
+  })
+
+  /** 组装请求参数：online/show_bot 用后端哨兵 '1'（类型已锁字面量），空值不发送 */
+  const buildFilterParams = (): VisitorListParams => {
+    const params: VisitorListParams = {}
+    const search = filters.search.trim()
+    if (search) params.search = search
+    if (filters.deviceType) params.device_type = filters.deviceType
+    const country = filters.country.trim()
+    if (country) params.country = country
+    if (filters.online) params.online = '1'
+    if (filters.showBot) params.show_bot = '1'
+    const [dateFrom, dateTo] = filters.dateRange || []
+    if (dateFrom) params.date_from = dateFrom
+    if (dateTo) params.date_to = dateTo
+    return params
+  }
+
+  // ---------- 单元格渲染 ----------
+  const codeStyle = {
+    padding: '2px 8px',
+    borderRadius: '4px',
+    fontSize: '12px',
+    background: 'var(--el-fill-color-light)',
+    color: 'var(--el-text-color-regular)'
+  } satisfies Record<string, string>
+
+  const renderIdCell = (row: VisitorRow) =>
+    h('div', { class: 'flex-c' }, [
+      h('code', { style: codeStyle }, row.visitor_id.slice(0, 8)),
+      h(
+        ElButton,
+        {
+          link: true,
+          type: 'primary',
+          size: 'small',
+          class: 'ml-2',
+          onClick: (e: MouseEvent) => {
+            e.stopPropagation()
+            copyVisitorId(row.visitor_id)
+          }
+        },
+        () => '复制'
+      )
+    ])
+
+  const renderLocation = (row: VisitorRow) => {
+    const region = [row.province, row.city].filter(Boolean).join(' ')
+    const text = [row.country, region].filter(Boolean).join(' · ')
+    return h('span', { class: 'whitespace-nowrap' }, `${countryFlag(row.country)} ${text || '—'}`)
+  }
+
+  const renderDevice = (row: VisitorRow) => {
+    const env = [row.os, row.browser].filter(Boolean).join(' · ')
+    return h('div', null, [
+      h('div', { class: 'whitespace-nowrap' }, row.device_type || '—'),
+      env ? h('div', { class: 'text-xs text-g-500 whitespace-nowrap mt-0.5' }, env) : null
+    ])
+  }
+
+  const renderOnline = (row: VisitorRow) =>
+    h('div', { class: 'flex-c gap-1.5 whitespace-nowrap' }, [
+      h('span', {
+        style: {
+          width: '8px',
+          height: '8px',
+          borderRadius: '50%',
+          flexShrink: '0',
+          background: row.online ? 'var(--el-color-success)' : 'var(--el-text-color-disabled)'
+        }
+      }),
+      h('span', null, row.online ? '在线' : '离线')
+    ])
+
+  const renderSource = (val: string) => h('span', { class: 'whitespace-nowrap' }, val || '—')
+
+  // ---------- 表格 ----------
+  /** 后端页大小固定 20（PAGE_SIZE）：useTable 侧同步 size=20 才能算对总页数；size 不实际发送 */
+  const fetchVisitors = (params: VisitorListParams & { size?: number }) => getVisitors(params)
+
+  const {
+    columns,
+    columnChecks,
+    data,
+    loading,
+    pagination,
+    getData,
+    replaceSearchParams,
+    handleSizeChange,
+    handleCurrentChange,
+    refreshData
+  } = useTable({
+    core: {
+      apiFn: fetchVisitors,
+      apiParams: { size: 20 },
+      // 后端分页参数是 page（无 size）；响应 {list,total,page} 由默认适配器识别
+      paginationKey: { current: 'page' },
+      excludeParams: ['size'],
+      columnsFactory: () => [
+        {
+          prop: 'visitor_id',
+          label: '访客 ID',
+          minWidth: 170,
+          fixed: 'left',
+          formatter: renderIdCell
+        },
+        {
+          prop: 'country',
+          label: '地理位置',
+          minWidth: 200,
+          formatter: renderLocation
+        },
+        {
+          prop: 'device_type',
+          label: '设备',
+          minWidth: 130,
+          formatter: renderDevice
+        },
+        {
+          prop: 'first_seen_at',
+          label: '首次访问',
+          width: 140,
+          formatter: (row: VisitorRow) => formatDateTime(row.first_seen_at)
+        },
+        {
+          prop: 'last_seen_at',
+          label: '最近访问',
+          width: 140,
+          formatter: (row: VisitorRow) => formatDateTime(row.last_seen_at)
+        },
+        { prop: 'visit_count', label: '访问次数', width: 90 },
+        { prop: 'active_days', label: '活跃天数', width: 90 },
+        {
+          prop: 'total_stay_ms',
+          label: '总停留',
+          width: 140,
+          formatter: (row: VisitorRow) => formatStay(row.total_stay_ms)
+        },
+        {
+          prop: 'first_source',
+          label: '首触来源',
+          minWidth: 110,
+          formatter: (row: VisitorRow) => renderSource(row.first_source)
+        },
+        {
+          prop: 'last_source',
+          label: '最近来源',
+          minWidth: 110,
+          formatter: (row: VisitorRow) => renderSource(row.last_source)
+        },
+        {
+          prop: 'online',
+          label: '状态',
+          width: 90,
+          formatter: renderOnline
+        }
+      ]
+    }
+  })
+
+  /** 应用筛选：整组替换查询参数并回到第 1 页（分页切换走 handleCurrentChange 保留筛选） */
+  const applyFilters = () => {
+    replaceSearchParams(buildFilterParams())
+    getData()
+  }
+
+  const resetFilters = () => {
+    Object.assign(filters, {
+      search: '',
+      deviceType: '',
+      country: '',
+      online: false,
+      showBot: false,
+      dateRange: null
+    })
+    applyFilters()
+  }
 </script>
+
+<style lang="scss" scoped>
+  /* formatter 渲染的单元格样式走内联（不携带本组件 scopeId），行级光标用 :deep 穿透 */
+  :deep(.visitor-row) {
+    cursor: pointer;
+  }
+</style>