feat(platform): keep canonical source summary slots

vehicle-data-platform/apps/api/internal/platform/mock_store.go

@@ -261,6 +261,7 @@ func (m *MockStore) VehicleServiceSummary(ctx context.Context) (VehicleServiceSu
 	for _, protocol := range protocolCounts {
 		summary.Protocols = append(summary.Protocols, *protocol)
 	}
+	summary.Protocols = completeProtocolStats(summary.Protocols)
 	for _, protocol := range canonicalVehicleProtocols {
 		missing := 0
 		for _, row := range coverage.Items {
@@ -271,7 +272,6 @@ func (m *MockStore) VehicleServiceSummary(ctx context.Context) (VehicleServiceSu
 		summary.MissingSources = append(summary.MissingSources, MissingSourceStat{Protocol: protocol, Count: missing})
 	}
 	sort.Slice(summary.ServiceStatuses, func(i, j int) bool { return summary.ServiceStatuses[i].Status < summary.ServiceStatuses[j].Status })
-	sort.Slice(summary.Protocols, func(i, j int) bool { return summary.Protocols[i].Protocol < summary.Protocols[j].Protocol })
 	return summary, nil
 }
 

vehicle-data-platform/apps/api/internal/platform/production_store.go

@@ -923,7 +923,10 @@ func (s *ProductionStore) protocolStats(ctx context.Context) ([]ProtocolStat, er
 		}
 		out = append(out, row)
 	}
-	return out, rows.Err()
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return completeProtocolStats(out), nil
 }
 
 func parsedFieldsFromString(value string) map[string]any {

vehicle-data-platform/apps/api/internal/platform/service.go

@@ -58,6 +58,37 @@ type Service struct {
 
 var canonicalVehicleProtocols = []string{"GB32960", "JT808", "YUTONG_MQTT"}
 
+func completeProtocolStats(stats []ProtocolStat) []ProtocolStat {
+	byProtocol := make(map[string]ProtocolStat, len(stats)+len(canonicalVehicleProtocols))
+	for _, stat := range stats {
+		protocol := strings.TrimSpace(stat.Protocol)
+		if protocol == "" {
+			continue
+		}
+		stat.Protocol = protocol
+		byProtocol[protocol] = stat
+	}
+	out := make([]ProtocolStat, 0, len(byProtocol)+len(canonicalVehicleProtocols))
+	seen := map[string]struct{}{}
+	for _, protocol := range canonicalVehicleProtocols {
+		stat := byProtocol[protocol]
+		stat.Protocol = protocol
+		out = append(out, stat)
+		seen[protocol] = struct{}{}
+	}
+	extra := make([]string, 0)
+	for protocol := range byProtocol {
+		if _, ok := seen[protocol]; !ok {
+			extra = append(extra, protocol)
+		}
+	}
+	sort.Strings(extra)
+	for _, protocol := range extra {
+		out = append(out, byProtocol[protocol])
+	}
+	return out
+}
+
 func missingCanonicalProtocols(protocols []string) []string {
 	missing := make([]string, 0, len(canonicalVehicleProtocols))
 	for _, protocol := range canonicalVehicleProtocols {

vehicle-data-platform/apps/api/internal/platform/service_test.go

@@ -83,3 +83,22 @@ func TestVehicleServiceSummaryCountsProtocolOnlineByProtocolSlot(t *testing.T) {
 		t.Fatalf("GB32960 online count must use GB32960 source status only, got %+v", gb32960)
 	}
 }
+
+func TestCompleteProtocolStatsIncludesCanonicalSlots(t *testing.T) {
+	stats := completeProtocolStats([]ProtocolStat{{Protocol: "JT808", Online: 2, Total: 5}})
+	byProtocol := map[string]ProtocolStat{}
+	for _, stat := range stats {
+		byProtocol[stat.Protocol] = stat
+	}
+	for _, protocol := range canonicalVehicleProtocols {
+		if _, ok := byProtocol[protocol]; !ok {
+			t.Fatalf("canonical protocol %s should be present, got %+v", protocol, stats)
+		}
+	}
+	if byProtocol["JT808"].Online != 2 || byProtocol["JT808"].Total != 5 {
+		t.Fatalf("existing protocol stats should be preserved, got %+v", byProtocol["JT808"])
+	}
+	if byProtocol["GB32960"].Online != 0 || byProtocol["GB32960"].Total != 0 {
+		t.Fatalf("missing canonical protocol should be exposed as zero slot, got %+v", byProtocol["GB32960"])
+	}
+}

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

@@ -44,6 +44,13 @@ function formatCount(value?: number | null) {
   return value == null ? '0' : value.toLocaleString();
 }
 
+function formatProtocolRate(row: ProtocolStat) {
+  if (!Number.isFinite(row.total) || row.total <= 0) {
+    return '0%';
+  }
+  return `${Math.round((row.online / row.total) * 100)}%`;
+}
+
 function rowServiceStatus(row: { serviceStatus?: { title: string; severity: string }; onlineSourceCount: number; sourceCount: number }) {
   if (row.serviceStatus) {
     return {
@@ -201,7 +208,7 @@ export function Dashboard({ onOpenVehicle, onOpenQuality, onOpenVehicles }: { on
                   { title: '总数', dataIndex: 'total' },
                   {
                     title: '在线率',
-                    render: (_: unknown, row: ProtocolStat) => `${Math.round((row.online / row.total) * 100)}%`
+                    render: (_: unknown, row: ProtocolStat) => formatProtocolRate(row)
                   },
                   {
                     title: '缺失车辆',

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

@@ -96,7 +96,11 @@ test('dashboard renders vehicle service summary metrics', async () => {
               { status: 'healthy', title: '服务正常', count: 161 },
               { status: 'degraded', title: '部分来源离线', count: 41 }
             ],
-            protocols: [{ protocol: 'JT808', online: 157, total: 388 }]
+            protocols: [
+              { protocol: 'JT808', online: 157, total: 388 },
+              { protocol: 'YUTONG_MQTT', online: 0, total: 0 }
+            ],
+            missingSources: [{ protocol: 'YUTONG_MQTT', count: 1033 }]
           },
           traceId: 'trace-test',
           timestamp: 1783094400000
@@ -116,7 +120,7 @@ test('dashboard renders vehicle service summary metrics', async () => {
   render(<App />);
 
   expect(await screen.findByText('总车辆')).toBeInTheDocument();
-  expect(screen.getByText('1,033')).toBeInTheDocument();
+  expect(screen.getAllByText('1,033').length).toBeGreaterThanOrEqual(1);
   expect(screen.getByText('单源车辆')).toBeInTheDocument();
   expect(screen.getByText('391')).toBeInTheDocument();
   expect(screen.getByText('多源车辆')).toBeInTheDocument();
@@ -125,6 +129,9 @@ test('dashboard renders vehicle service summary metrics', async () => {
   expect(screen.getByText('461')).toBeInTheDocument();
   expect(screen.getByText('身份未绑定')).toBeInTheDocument();
   expect(screen.getByText('来源证据在线分布')).toBeInTheDocument();
+  expect(screen.getByText('YUTONG_MQTT')).toBeInTheDocument();
+  expect(screen.getByText('0%')).toBeInTheDocument();
+  expect(screen.queryByText('NaN%')).not.toBeInTheDocument();
   expect(fetchMock).toHaveBeenCalledWith('/api/vehicle-service/summary', undefined);
 });