feat(platform): show vehicle service evidence chain

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

@@ -138,6 +138,11 @@ export function VehicleDetail({
   const consistencyTimeDeltaSeconds = consistency?.sourceTimeDeltaSeconds ?? sourceTimeDeltaSeconds;
   const consistencyTitle = consistency?.title ?? '-';
   const consistencyDetail = consistency?.detail ?? '-';
+  const evidenceSourceCount = overview?.sourceCount ?? consistencySourceCount;
+  const evidenceOnlineSourceCount = overview?.onlineSourceCount ?? consistencyOnlineSourceCount;
+  const evidenceLocatedSourceCount = consistencyLocatedSourceCount;
+  const evidenceMileageDelta = consistencyMileageDelta;
+  const evidenceTimeDeltaSeconds = consistencyTimeDeltaSeconds;
   const activeProtocol = query.protocol?.trim() ?? '';
   const scopeText = activeProtocol ? `单一来源：${activeProtocol}` : '全部来源聚合';
   const formKey = `${query.keyword}-${query.protocol ?? ''}`;
@@ -224,6 +229,27 @@ export function VehicleDetail({
         </Card>
       ) : null}
 
+      {overview || consistency ? (
+        <Card bordered title="车辆服务证据链" style={{ marginTop: 16 }}>
+          <div className="vp-evidence-grid">
+            {[
+              { label: '来源证据', value: evidenceSourceCount > 0 ? `${evidenceOnlineSourceCount}/${evidenceSourceCount} 来源在线` : '-' },
+              { label: '定位证据', value: evidenceLocatedSourceCount > 0 ? `${evidenceLocatedSourceCount} 个来源有位置` : '暂无位置' },
+              { label: '里程差异', value: formatCompactNumber(evidenceMileageDelta, ' km') },
+              { label: '时间差异', value: formatSeconds(evidenceTimeDeltaSeconds) },
+              { label: '主来源', value: overview?.primaryProtocol || summary?.primaryProtocol || '-' },
+              { label: '服务结论', value: consistencyTitle }
+            ].map((item) => (
+              <div key={item.label} className="vp-evidence-item">
+                <div className="vp-evidence-label">{item.label}</div>
+                <div className="vp-evidence-value">{item.value}</div>
+              </div>
+            ))}
+          </div>
+          <Typography.Text type="secondary">{consistencyDetail}</Typography.Text>
+        </Card>
+      ) : null}
+
       <Card bordered style={{ marginTop: 16 }}>
         <div className="vp-vehicle-summary">
           <Descriptions

vehicle-data-platform/apps/web/src/styles/global.css

@@ -288,6 +288,36 @@ body {
   align-items: center;
 }
 
+.vp-evidence-grid {
+  display: grid;
+  grid-template-columns: repeat(6, minmax(0, 1fr));
+  gap: 12px;
+  margin-bottom: 12px;
+}
+
+.vp-evidence-item {
+  min-height: 70px;
+  padding: 12px;
+  border: 1px solid var(--vp-border);
+  border-radius: var(--vp-radius);
+  background: #fbfcff;
+}
+
+.vp-evidence-label {
+  color: var(--vp-text-muted);
+  font-size: 12px;
+  line-height: 18px;
+}
+
+.vp-evidence-value {
+  margin-top: 6px;
+  color: var(--vp-text);
+  font-size: 15px;
+  font-weight: 600;
+  line-height: 22px;
+  word-break: break-all;
+}
+
 .vp-source-grid {
   display: grid;
   grid-template-columns: repeat(3, minmax(0, 1fr));

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

@@ -1852,6 +1852,94 @@ test('shows unified service overview on vehicle detail', async () => {
   expect(screen.getByText('历史 12 / RAW 34 / 里程 7')).toBeInTheDocument();
 });
 
+test('shows vehicle service evidence chain before source details', async () => {
+  window.history.replaceState(null, '', '/#/detail?keyword=VIN001');
+  vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/vehicle-service')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            vin: 'VIN001',
+            lookupKey: 'VIN001',
+            lookupResolved: true,
+            serviceOverview: {
+              vin: 'VIN001',
+              plate: '粤AG18312',
+              phone: '13307795425',
+              oem: 'G7s',
+              protocols: ['GB32960', 'JT808', 'YUTONG_MQTT'],
+              primaryProtocol: 'GB32960',
+              coverageStatus: 'partial',
+              sourceCount: 3,
+              onlineSourceCount: 2,
+              lastSeen: '2026-07-03 20:12:10',
+              realtimeCount: 3,
+              historyCount: 12,
+              rawCount: 34,
+              mileageCount: 7,
+              qualityIssueCount: 1
+            },
+            serviceStatus: {
+              status: 'degraded',
+              severity: 'warning',
+              title: '部分来源离线',
+              detail: '2/3 个来源在线',
+              sourceCount: 3,
+              onlineSourceCount: 2
+            },
+            sourceConsistency: {
+              sourceCount: 3,
+              onlineSourceCount: 2,
+              locatedSourceCount: 2,
+              mileageDeltaKm: 1.4,
+              sourceTimeDeltaSeconds: 125,
+              scope: 'vehicle',
+              status: 'degraded',
+              severity: 'warning',
+              title: '部分来源离线',
+              detail: 'MQTT 离线，32960 与 808 仍可支撑车辆服务'
+            },
+            sources: ['GB32960', 'JT808', 'YUTONG_MQTT'],
+            sourceStatus: [
+              { protocol: 'GB32960', online: true, lastSeen: '2026-07-03 20:12:10', hasRealtime: true, hasHistory: true, hasRaw: true, hasMileage: true },
+              { protocol: 'JT808', online: true, lastSeen: '2026-07-03 20:12:08', hasRealtime: true, hasHistory: true, hasRaw: true, hasMileage: true },
+              { protocol: 'YUTONG_MQTT', online: false, lastSeen: '2026-07-03 20:10:05', hasRealtime: true, hasHistory: false, hasRaw: true, hasMileage: false }
+            ],
+            realtime: [],
+            history: { items: [], total: 12, limit: 20, offset: 0 },
+            raw: { items: [], total: 34, limit: 10, offset: 0 },
+            mileage: { items: [], total: 7, limit: 20, offset: 0 },
+            quality: { items: [], total: 1, limit: 20, offset: 0 }
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: path.includes('/api/ops/health')
+          ? { linkHealth: [], kafkaLag: 0, redisOnlineKeys: 0, tdengineWritable: true, mysqlWritable: true, runtime: { requestTimeoutMs: 5000 } }
+          : { items: [], total: 0, limit: 10, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByText('车辆服务证据链')).toBeInTheDocument();
+  expect(screen.getByText('2/3 来源在线')).toBeInTheDocument();
+  expect(screen.getAllByText('2 个来源有位置').length).toBeGreaterThan(0);
+  expect(screen.getAllByText('1.4 km').length).toBeGreaterThan(0);
+  expect(screen.getAllByText('125 秒').length).toBeGreaterThan(0);
+  expect(screen.getAllByText('MQTT 离线，32960 与 808 仍可支撑车辆服务').length).toBeGreaterThan(0);
+});
+
 test('opens history with the currently selected vehicle detail source', async () => {
   window.history.replaceState(null, '', '/#/detail?keyword=VIN001');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
@@ -2223,10 +2311,10 @@ test('shows cross-source consistency for one vehicle service', async () => {
 
   expect(await screen.findByText('跨来源一致性')).toBeInTheDocument();
   expect(screen.getAllByText('部分来源离线').length).toBeGreaterThanOrEqual(1);
-  expect(screen.getByText('2/3 个来源在线，车辆服务可用但需要关注离线来源。')).toBeInTheDocument();
+  expect(screen.getAllByText('2/3 个来源在线，车辆服务可用但需要关注离线来源。').length).toBeGreaterThan(0);
   expect(screen.getByText('3 个来源')).toBeInTheDocument();
   expect(screen.getByText('2/3 在线')).toBeInTheDocument();
-  expect(screen.getByText('3 个来源有位置')).toBeInTheDocument();
+  expect(screen.getAllByText('3 个来源有位置').length).toBeGreaterThan(0);
-  expect(screen.getByText('0.4 km')).toBeInTheDocument();
+  expect(screen.getAllByText('0.4 km').length).toBeGreaterThan(0);
-  expect(screen.getByText('35 秒')).toBeInTheDocument();
+  expect(screen.getAllByText('35 秒').length).toBeGreaterThan(0);
 });