feat(platform): expose active connection capacity

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

@@ -284,6 +284,7 @@ type QualityBucketStat struct {
 type OpsHealth struct {
 	LinkHealth        []LinkHealth `json:"linkHealth"`
 	KafkaLag          *int         `json:"kafkaLag"`
+	ActiveConnections *int         `json:"activeConnections"`
 	RedisOnlineKeys   *int         `json:"redisOnlineKeys"`
 	TDengineWritable  bool         `json:"tdengineWritable"`
 	MySQLWritable     bool         `json:"mysqlWritable"`

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

@@ -905,7 +905,7 @@ func (s *ProductionStore) OpsHealth(ctx context.Context) (OpsHealth, error) {
 	locationHealth := s.mysqlTableReadHealth(ctx, "vehicle_realtime_location", "读取实时位置表正常")
 	tdengineHealth := s.tdengineRawFrameHealth(ctx)
 	redisHealth, redisOnlineKeys := s.redisOnlineKeyHealth(ctx)
-	capacityHealth, kafkaLag := s.capacityCheckHealth(ctx)
+	capacityHealth, kafkaLag, activeConnections := s.capacityCheckHealth(ctx)
 	mysqlWritable := mysqlStatus == "ok" && snapshotHealth.Status == "ok" && locationHealth.Status == "ok"
 	return OpsHealth{
 		LinkHealth: []LinkHealth{
@@ -917,25 +917,27 @@ func (s *ProductionStore) OpsHealth(ctx context.Context) (OpsHealth, error) {
 			redisHealth,
 		},
 		KafkaLag:          kafkaLag,
+		ActiveConnections: activeConnections,
 		RedisOnlineKeys:   redisOnlineKeys,
 		TDengineWritable:  tdengineHealth.Status == "ok",
 		MySQLWritable:     mysqlWritable,
 	}, nil
 }
 
-func (s *ProductionStore) capacityCheckHealth(ctx context.Context) (LinkHealth, *int) {
+func (s *ProductionStore) capacityCheckHealth(ctx context.Context) (LinkHealth, *int, *int) {
 	health := LinkHealth{Name: "Capacity check", Status: "warning", Detail: "平台暂未接入 capacity-check"}
 	if s.capacityCheck == nil {
-		return health, nil
+		return health, nil, nil
 	}
 	result, err := s.capacityCheck.CheckCapacity(ctx)
 	if err != nil {
 		health.Status = "error"
 		health.Detail = err.Error()
-		return health, nil
+		return health, nil, nil
 	}
 	kafkaLag := int(result.KafkaLag)
-	detail := "active_connections=" + strconv.Itoa(int(result.ActiveConnections)) + ", kafka_lag=" + strconv.Itoa(kafkaLag)
+	activeConnections := int(result.ActiveConnections)
+	detail := "active_connections=" + strconv.Itoa(activeConnections) + ", kafka_lag=" + strconv.Itoa(kafkaLag)
 	if len(result.Findings) > 0 {
 		detail += ", findings=" + strings.Join(result.Findings, "; ")
 	}
@@ -945,7 +947,7 @@ func (s *ProductionStore) capacityCheckHealth(ctx context.Context) (LinkHealth,
 		health.Status = "warning"
 	}
 	health.Detail = detail
-	return health, &kafkaLag
+	return health, &kafkaLag, &activeConnections
 }
 
 func (s *ProductionStore) redisOnlineKeyHealth(ctx context.Context) (LinkHealth, *int) {

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

@@ -227,6 +227,9 @@ func TestOpsHealthUsesCapacityCheckProbeForKafkaLag(t *testing.T) {
 	if health.KafkaLag == nil || *health.KafkaLag != 42 {
 		t.Fatalf("OpsHealth should expose capacity-check kafka lag, got %+v", health.KafkaLag)
 	}
+	if health.ActiveConnections == nil || *health.ActiveConnections != 120000 {
+		t.Fatalf("OpsHealth should expose capacity-check active connections, got %+v", health.ActiveConnections)
+	}
 	var capacityHealth *LinkHealth
 	for index := range health.LinkHealth {
 		if health.LinkHealth[index].Name == "Capacity check" {

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

@@ -274,6 +274,7 @@ export interface QualityBucketStat {
 export interface OpsHealth {
   linkHealth: LinkHealth[];
   kafkaLag: number | null;
+  activeConnections: number | null;
   redisOnlineKeys: number | null;
   tdengineWritable: boolean;
   mysqlWritable: boolean;

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

@@ -188,8 +188,8 @@ export function Quality({
       </div>
       <Row gutter={16}>
         <Col span={6}><Card bordered title="Kafka Lag">{formatLag(health?.kafkaLag)}</Card></Col>
+        <Col span={6}><Card bordered title="活跃连接">{formatLag(health?.activeConnections)}</Card></Col>
         <Col span={6}><Card bordered title="Redis 在线 Key">{formatLag(health?.redisOnlineKeys)}</Card></Col>
-        <Col span={6}><Card bordered title="BFF 请求超时">{formatRequestTimeout(health)}</Card></Col>
         <Col span={6}>
           <Card bordered title="存储读取">
             <Tag color={statusColor[storageReadStatus(health)] ?? 'grey'}>

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

@@ -4128,6 +4128,31 @@ test('quality health storage card stays pending before ops health loads', async
   expect(screen.queryByText('异常')).not.toBeInTheDocument();
 });
 
+test('quality health shows active connection capacity metric', async () => {
+  window.history.replaceState(null, '', '/#/quality');
+  vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    return {
+      ok: true,
+      json: async () => ({
+        data: path.includes('/api/ops/health')
+          ? { linkHealth: [], kafkaLag: 0, activeConnections: 120000, redisOnlineKeys: 368, tdengineWritable: true, mysqlWritable: true, runtime: { requestTimeoutMs: 5000 } }
+          : path.includes('/api/quality/summary')
+            ? { issueVehicleCount: 0, issueRecordCount: 0, errorCount: 0, warningCount: 0, protocols: [], issueTypes: [] }
+            : { items: [], total: 0, limit: 20, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByRole('heading', { name: '质量治理' })).toBeInTheDocument();
+  expect(await screen.findByText('活跃连接')).toBeInTheDocument();
+  expect(screen.getByText('120,000')).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) => {