feat(platform): add realtime service overview

vehicle-data-platform/apps/web/src/pages/Realtime.tsx

@@ -1701,6 +1701,71 @@ export function Realtime({
     });
     return protocols.length > 0 ? protocols.join(' / ') : '暂无来源证据';
   })();
+  const realtimeServiceOverviewItems = [
+    {
+      label: '在线车辆',
+      value: `${onlineCount.toLocaleString()} 在线`,
+      detail: `${(rows.length - onlineCount).toLocaleString()} 辆离线，在线率 ${formatPercent(onlineRate)}`,
+      color: onlineCount > 0 ? 'green' as const : 'orange' as const,
+      onClick: () => applyFilters({ ...filters, online: 'online' })
+    },
+    {
+      label: '有效定位',
+      value: `${locatedCount.toLocaleString()} 辆`,
+      detail: `${missingCoordinateCount.toLocaleString()} 辆无坐标，定位率 ${formatPercent(locatedRate)}`,
+      color: locatedCount > 0 ? 'blue' as const : 'orange' as const,
+      onClick: () => {
+        window.location.hash = buildAppHash({ page: 'map', protocol: filters.protocol, filters });
+      }
+    },
+    {
+      label: '需关注',
+      value: `${mapAttentionRows.length.toLocaleString()} 辆`,
+      detail: mapAttentionRows[0] ? `${mapAttentionRows[0].plate || mapAttentionRows[0].vin}：${realtimeIssueLabels(mapAttentionRows[0]).join('；')}` : '当前没有离线、超时或定位异常车辆',
+      color: mapAttentionRows.length > 0 ? 'orange' as const : 'green' as const,
+      onClick: () => applyFilters({ ...filters, serviceStatus: 'degraded' })
+    },
+    {
+      label: '地图能力',
+      displayLabel: '高德能力',
+      value: amapConfigured ? '高德可用' : '坐标预览',
+      detail: amapConfigured ? '高德 Web JS 与安全代理就绪' : '地图降级为坐标预览',
+      color: amapConfigured ? 'green' as const : 'orange' as const,
+      onClick: () => load(filters, pagination.currentPage, pagination.pageSize)
+    }
+  ];
+  const realtimeServiceActions = [
+    {
+      label: '打开地图',
+      action: '地图态势',
+      color: 'blue' as const,
+      disabled: false,
+      onClick: () => {
+        window.location.hash = buildAppHash({ page: 'map', protocol: filters.protocol, filters });
+      }
+    },
+    {
+      label: '轨迹复盘',
+      action: '轨迹回放',
+      color: selectedMapRow ? 'blue' as const : 'grey' as const,
+      disabled: !selectedMapRow || !canOpenVehicle(selectedMapRow.vin),
+      onClick: () => selectedMapRow && onOpenHistory?.(selectedMapRow.vin, selectedVehicleProtocol)
+    },
+    {
+      label: '导出清单',
+      action: '导出CSV',
+      color: rows.length > 0 ? 'blue' as const : 'grey' as const,
+      disabled: rows.length === 0,
+      onClick: exportRealtime
+    },
+    {
+      label: '告警通知',
+      action: '关注车辆',
+      color: mapAttentionRows.length > 0 ? 'orange' as const : 'green' as const,
+      disabled: !onOpenQuality,
+      onClick: () => onOpenQuality?.({ serviceStatus: 'degraded' })
+    }
+  ];
   const realtimeCustomerCommandItems = [
     {
       label: '实时地图',
@@ -2628,6 +2693,51 @@ export function Realtime({
   return (
     <div className="vp-page">
       <PageHeader title={title} description={description} />
+      <section className="vp-realtime-service-overview" aria-label="实时车辆服务总览">
+        <div className="vp-realtime-service-overview-copy">
+          <Space wrap>
+            <Tag color="blue">实时车辆服务总览</Tag>
+            <Tag color={amapConfigured ? 'green' : 'orange'}>{amapConfigured ? '高德可用' : '坐标预览'}</Tag>
+            <Tag color={mapAttentionRows.length > 0 ? 'orange' : 'green'}>{mapAttentionRows.length.toLocaleString()} 辆需关注</Tag>
+          </Space>
+          <Typography.Title heading={5} style={{ margin: 0 }}>
+            客户先看车辆是否在线、地图是否可见、哪些车辆需要处置，再进入轨迹、统计、导出和告警。
+          </Typography.Title>
+          <Typography.Text type="secondary">
+            当前范围：{filterSummary.length > 0 ? filterSummary.join(' / ') : '全部车辆'}，来源证据：{realtimeSourceEvidenceText}
+          </Typography.Text>
+        </div>
+        <div className="vp-realtime-service-overview-metrics">
+          {realtimeServiceOverviewItems.map((item) => (
+            <button
+              key={item.label}
+              type="button"
+              className="vp-realtime-service-overview-metric"
+              onClick={item.onClick}
+              aria-label={`实时车辆服务总览 ${item.label} ${item.value}`}
+            >
+              <Tag color={item.color}>{item.displayLabel ?? item.label}</Tag>
+              <strong>{item.value}</strong>
+              <span>{item.detail}</span>
+            </button>
+          ))}
+        </div>
+        <div className="vp-realtime-service-overview-actions">
+          {realtimeServiceActions.map((item) => (
+            <button
+              key={item.label}
+              type="button"
+              className="vp-realtime-service-overview-action"
+              disabled={item.disabled}
+              onClick={item.onClick}
+              aria-label={`实时服务动作 ${item.label} ${item.action}`}
+            >
+              <Tag color={item.color}>{item.label}</Tag>
+              <span>{item.action}</span>
+            </button>
+          ))}
+        </div>
+      </section>
       <section className="vp-realtime-command-center" aria-label="客户实时监控总控台">
         <div className="vp-realtime-command-center-copy">
           <Space wrap>