fix(web): expose secondary query failures

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

@@ -1,5 +1,5 @@
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
-import { cleanup, render, screen } from '@testing-library/react';
+import { cleanup, fireEvent, render, screen } from '@testing-library/react';
 import { afterEach, expect, test, vi } from 'vitest';
 import OperationsPage from './OperationsPage';
 
@@ -26,3 +26,25 @@ test('reconciles service identities with bound and identity-required vehicles',
   expect(screen.getByText('已绑定 1024 · 待绑定 11')).toBeInTheDocument();
   expect(screen.queryByText('统一车辆视角')).not.toBeInTheDocument();
 });
+
+test('keeps health evidence visible when source readiness fails and retries that section', async () => {
+  mocks.opsHealth.mockResolvedValue({
+    linkHealth: [], kafkaLag: 0, activeConnections: 10, capacityFindings: [], redisOnlineKeys: 5,
+    tdengineWritable: true, mysqlWritable: true,
+    runtime: { platformRelease: 'test-release', dataMode: 'production', requestTimeoutMs: 5000, amapSecurityProxyEnabled: true, amapSecurityCodeExposed: false }
+  });
+  mocks.sourceReadiness.mockRejectedValueOnce(new Error('来源就绪度暂时不可用')).mockResolvedValueOnce({
+    totalVehicles: 1035, boundVehicles: 1024, identityRequiredVehicles: 11, onlineVehicles: 234,
+    kafkaLag: 0, activeConnections: 10, redisOnlineKeys: 5, platformRelease: 'test-release', sources: []
+  });
+  const client = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+  render(<QueryClientProvider client={client}><OperationsPage /></QueryClientProvider>);
+
+  expect(await screen.findByText('来源就绪度暂时不可用')).toBeInTheDocument();
+  expect(screen.getByText('test-release')).toBeInTheDocument();
+  fireEvent.click(screen.getByRole('button', { name: /重试/ }));
+
+  expect(await screen.findByText('1035 / 234')).toBeInTheDocument();
+  expect(screen.queryByText('来源就绪度暂时不可用')).not.toBeInTheDocument();
+  expect(mocks.sourceReadiness).toHaveBeenCalledTimes(2);
+});