feat(monitor): preserve investigation context

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

@@ -4,6 +4,7 @@ import { afterEach, beforeEach, expect, test, vi } from 'vitest';
 import { MemoryRouter, useNavigate } from 'react-router-dom';
 import type { TrackPlaybackResponse } from '../../api/types';
 import TrackPage from './TrackPage';
+import { buildMonitorPath, withMonitorReturn } from '../routing/monitorContext';
 import { ROUTER_FUTURE } from '../routing/routerConfig';
 
 const mocks = vi.hoisted(() => ({ trackPlayback: vi.fn(), reverseGeocode: vi.fn(), vehicles: vi.fn() }));
@@ -43,6 +44,22 @@ function TrackNavigationHarness() {
   return <><button type="button" onClick={() => navigate('/tracks')}>清空轨迹路由</button><button type="button" onClick={() => navigate(-1)}>后退轨迹路由</button><button type="button" onClick={() => navigate(1)}>前进轨迹路由</button><TrackPage /></>;
 }
 
+test('preserves the exact monitor return after querying another track range', async () => {
+  const client = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+  const monitorPath = buildMonitorPath({
+    mode: 'map', keyword: '粤A12345', protocol: '', status: '', selectedVin: 'LTEST000000000001', detailOpen: true,
+    viewport: { zoom: 14, bounds: '' }, listOffset: 0, listLimit: 50, hasViewport: true
+  });
+  const initialEntry = withMonitorReturn('/tracks?keyword=LTEST000000000001&dateFrom=2026-07-15T00:00&dateTo=2026-07-15T23:59', monitorPath);
+  render(<QueryClientProvider client={client}><MemoryRouter future={ROUTER_FUTURE} initialEntries={[initialEntry]}><TrackPage /></MemoryRouter></QueryClientProvider>);
+
+  expect(await screen.findByRole('link', { name: /返回全局监控/ })).toHaveAttribute('href', monitorPath);
+  fireEvent.change(screen.getByLabelText('数据来源'), { target: { value: 'JT808' } });
+  fireEvent.click(screen.getByRole('button', { name: /查询轨迹/ }));
+
+  expect(await screen.findByRole('link', { name: /返回全局监控/ })).toHaveAttribute('href', monitorPath);
+});
+
 test('keeps committed track criteria authoritative to same-route navigation and browser history', async () => {
   const client = new QueryClient({ defaultOptions: { queries: { retry: false } } });
   render(<QueryClientProvider client={client}><MemoryRouter future={ROUTER_FUTURE} initialEntries={['/tracks?keyword=LTEST000000000001&dateFrom=2026-07-15T00:00&dateTo=2026-07-15T23:59']}><TrackNavigationHarness /></MemoryRouter></QueryClientProvider>);