feat(platform): summarize missing vehicle sources

vehicle-data-platform/apps/web/src/api/types.ts

@@ -144,6 +144,12 @@ export interface VehicleServiceSummary {
   identityRequiredVehicles: number;
   serviceStatuses: ServiceStatusStat[];
   protocols: ProtocolStat[];
+  missingSources: MissingSourceStat[];
+}
+
+export interface MissingSourceStat {
+  protocol: string;
+  count: number;
 }
 
 export interface VehicleServiceStatus {

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

@@ -120,6 +120,7 @@ export function Dashboard({ onOpenVehicle, onOpenQuality, onOpenVehicles }: { on
     { label: '暂无来源车辆', value: formatCount(serviceSummary?.noDataVehicles), filters: { serviceStatus: 'no_data' } },
     { label: '身份未绑定', value: formatCount(serviceSummary?.identityRequiredVehicles), filters: { serviceStatus: 'identity_required' } }
   ];
+  const missingSourceCounts = new Map((serviceSummary?.missingSources ?? []).map((item) => [item.protocol, item.count]));
 
   return (
     <div className="vp-page">
@@ -175,6 +176,24 @@ export function Dashboard({ onOpenVehicle, onOpenQuality, onOpenVehicles }: { on
                   {
                     title: '在线率',
                     render: (_: unknown, row: ProtocolStat) => `${Math.round((row.online / row.total) * 100)}%`
+                  },
+                  {
+                    title: '缺失车辆',
+                    render: (_: unknown, row: ProtocolStat) => {
+                      const missingCount = missingSourceCounts.get(row.protocol);
+                      if (missingCount == null) {
+                        return '-';
+                      }
+                      return (
+                        <Button
+                          aria-label={`查看缺 ${row.protocol}`}
+                          size="small"
+                          onClick={() => loadCoverage({ missingProtocol: row.protocol })}
+                        >
+                          {formatCount(missingCount)}
+                        </Button>
+                      );
+                    }
                   }
                 ]}
               />

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

@@ -128,6 +128,72 @@ test('dashboard renders vehicle service summary metrics', async () => {
   expect(fetchMock).toHaveBeenCalledWith('/api/vehicle-service/summary', undefined);
 });
 
+test('opens dashboard coverage from missing source distribution', async () => {
+  window.history.replaceState(null, '', '/#/dashboard');
+  const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/dashboard/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            onlineVehicles: 3,
+            activeToday: 4,
+            frameToday: 1286320,
+            issueVehicles: 7,
+            kafkaLag: 0,
+            protocols: [],
+            serviceStatuses: [],
+            linkHealth: []
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/vehicle-service/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            totalVehicles: 1033,
+            boundVehicles: 1024,
+            onlineVehicles: 208,
+            singleSourceVehicles: 391,
+            multiSourceVehicles: 181,
+            noDataVehicles: 461,
+            identityRequiredVehicles: 9,
+            serviceStatuses: [],
+            protocols: [{ protocol: 'YUTONG_MQTT', online: 1, total: 8 }],
+            missingSources: [{ protocol: 'YUTONG_MQTT', count: 983 }]
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: { items: [], total: 0, limit: 8, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByText('缺失车辆')).toBeInTheDocument();
+  expect(screen.getByText('983')).toBeInTheDocument();
+  fireEvent.click(screen.getByRole('button', { name: '查看缺 YUTONG_MQTT' }));
+
+  await waitFor(() => {
+    expect(fetchMock).toHaveBeenCalledWith(expect.stringContaining('missingProtocol=YUTONG_MQTT'), undefined);
+  });
+  expect(screen.getByText('当前筛选：缺 YUTONG_MQTT')).toBeInTheDocument();
+});
+
 test('opens vehicle list filtered by service summary KPI', async () => {
   window.history.replaceState(null, '', '/#/dashboard');
   const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {