perf(history): reduce export polling load

vehicle-data-platform/apps/web/src/v2/pages/HistoryPage.tsx

@@ -4,7 +4,7 @@ import { FormEvent, useEffect, useMemo, useState } from 'react';
 import { useSearchParams } from 'react-router-dom';
 import { api } from '../../api/client';
 import type { HistoryDataResponse, HistoryDataRow, HistoryExportRequest, HistoryMetricDefinition, HistorySeriesResponse } from '../../api/types';
-import { buildHistorySeriesPanels, formatExportFileSize, formatHistoryValue, formatSeriesGrain, parseHistoryKeywords } from '../domain/history';
+import { buildHistorySeriesPanels, formatExportFileSize, formatHistoryValue, formatSeriesGrain, historyExportPollInterval, parseHistoryKeywords } from '../domain/history';
 import { InlineError } from '../shared/AsyncState';
 import { QUERY_MEMORY, retainPreviousPageWithinScope } from '../queryPolicy';
 
@@ -42,7 +42,13 @@ function CreateExportButton({ request, disabled }: { request: HistoryExportReque
 }
 
 function ExportJobsPanel() {
-  const query = useQuery({ queryKey: ['history-exports'], queryFn: ({ signal }) => api.historyExports(signal), refetchInterval: (current) => current.state.data?.some((job) => job.status === 'queued' || job.status === 'running') ? 1000 : false });
+  const query = useQuery({
+    queryKey: ['history-exports'],
+    queryFn: ({ signal }) => api.historyExports(signal),
+    refetchInterval: (current) => historyExportPollInterval(current.state.data),
+    refetchIntervalInBackground: false,
+    gcTime: QUERY_MEMORY.highVolumeGcTime
+  });
   const jobs = query.data ?? [];
   return <section className="v2-export-jobs"><header><strong>导出任务</strong><span>{jobs.length}</span></header><div>{jobs.slice(0, 6).map((job) => <article key={job.id} title={job.evidence}><i className={`is-${job.status}`} /><div><strong>{job.name}</strong><small>{job.status === 'queued' ? '等待单并发执行' : job.status === 'running' ? `${job.processedRows.toLocaleString('zh-CN')} / ${job.totalRows.toLocaleString('zh-CN')} 行 · ${job.progress}%` : job.status === 'completed' ? `${job.rowCount.toLocaleString('zh-CN')} 行 · ${formatExportFileSize(job.fileSizeBytes)} · 已完成` : job.error || '失败'}</small></div>{job.downloadUrl ? <a href={job.downloadUrl}><IconDownload />下载</a> : <em>{job.status === 'running' ? `${job.progress}%` : '—'}</em>}</article>)}{query.isError ? <div className="v2-history-side-empty">导出任务加载失败</div> : !jobs.length ? <div className="v2-history-side-empty">尚未创建导出任务</div> : null}</div></section>;
 }