feat(platform-web): show vehicle analysis scope

vehicle-data-platform/apps/web/src/test/App.test.tsx

@@ -938,6 +938,48 @@ test('applies protocol from shareable history hash to API requests', async () =>
     method: 'POST',
     body: expect.stringContaining('"protocol":"JT808"')
   }));
+  expect(screen.getByText('当前车辆：粤AG18312')).toBeInTheDocument();
+  expect(screen.getByText('当前来源：JT808')).toBeInTheDocument();
+});
+
+test('shows vehicle and source scope on mileage hash', async () => {
+  window.history.replaceState(null, '', '/#/mileage?keyword=VIN-MILEAGE-001&protocol=GB32960');
+  vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/ops/health')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: { linkHealth: [], kafkaLag: 0, redisOnlineKeys: 0, tdengineWritable: true, mysqlWritable: true, runtime: { requestTimeoutMs: 5000 } },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/mileage/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: { vehicleCount: 1, recordCount: 2, sourceCount: 1, totalMileageKm: 12.3, averageMileagePerVin: 12.3 },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: { items: [], total: 0, limit: 20, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByText('当前车辆：VIN-MILEAGE-001')).toBeInTheDocument();
+  expect(screen.getByText('当前来源：GB32960')).toBeInTheDocument();
 });
 
 test('keeps row protocol when opening vehicle service from history results', async () => {