feat(platform): expose capacity check findings

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

@@ -285,6 +285,7 @@ type OpsHealth struct {
 	LinkHealth        []LinkHealth `json:"linkHealth"`
 	KafkaLag          *int         `json:"kafkaLag"`
 	ActiveConnections *int         `json:"activeConnections"`
+	CapacityFindings  []string     `json:"capacityFindings"`
 	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, activeConnections := s.capacityCheckHealth(ctx)
+	capacityHealth, kafkaLag, activeConnections, capacityFindings := s.capacityCheckHealth(ctx)
 	mysqlWritable := mysqlStatus == "ok" && snapshotHealth.Status == "ok" && locationHealth.Status == "ok"
 	return OpsHealth{
 		LinkHealth: []LinkHealth{
@@ -918,22 +918,23 @@ func (s *ProductionStore) OpsHealth(ctx context.Context) (OpsHealth, error) {
 		},
 		KafkaLag:          kafkaLag,
 		ActiveConnections: activeConnections,
+		CapacityFindings:  capacityFindings,
 		RedisOnlineKeys:   redisOnlineKeys,
 		TDengineWritable:  tdengineHealth.Status == "ok",
 		MySQLWritable:     mysqlWritable,
 	}, nil
 }
 
-func (s *ProductionStore) capacityCheckHealth(ctx context.Context) (LinkHealth, *int, *int) {
+func (s *ProductionStore) capacityCheckHealth(ctx context.Context) (LinkHealth, *int, *int, []string) {
 	health := LinkHealth{Name: "Capacity check", Status: "warning", Detail: "平台暂未接入 capacity-check"}
 	if s.capacityCheck == nil {
-		return health, nil, nil
+		return health, nil, nil, []string{}
 	}
 	result, err := s.capacityCheck.CheckCapacity(ctx)
 	if err != nil {
 		health.Status = "error"
 		health.Detail = err.Error()
-		return health, nil, nil
+		return health, nil, nil, []string{}
 	}
 	kafkaLag := int(result.KafkaLag)
 	activeConnections := int(result.ActiveConnections)
@@ -947,7 +948,7 @@ func (s *ProductionStore) capacityCheckHealth(ctx context.Context) (LinkHealth,
 		health.Status = "warning"
 	}
 	health.Detail = detail
-	return health, &kafkaLag, &activeConnections
+	return health, &kafkaLag, &activeConnections, append([]string{}, result.Findings...)
 }
 
 func (s *ProductionStore) redisOnlineKeyHealth(ctx context.Context) (LinkHealth, *int) {

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

@@ -230,6 +230,9 @@ func TestOpsHealthUsesCapacityCheckProbeForKafkaLag(t *testing.T) {
 	if health.ActiveConnections == nil || *health.ActiveConnections != 120000 {
 		t.Fatalf("OpsHealth should expose capacity-check active connections, got %+v", health.ActiveConnections)
 	}
+	if len(health.CapacityFindings) != 1 || health.CapacityFindings[0] != "kafka lag 42" {
+		t.Fatalf("OpsHealth should expose structured capacity findings, got %+v", health.CapacityFindings)
+	}
 	var capacityHealth *LinkHealth
 	for index := range health.LinkHealth {
 		if health.LinkHealth[index].Name == "Capacity check" {
@@ -242,6 +245,30 @@ func TestOpsHealthUsesCapacityCheckProbeForKafkaLag(t *testing.T) {
 	}
 }
 
+func TestOpsHealthReturnsEmptyCapacityFindingsArray(t *testing.T) {
+	db, err := sql.Open("ops_health_test", "")
+	if err != nil {
+		t.Fatalf("open ops health db: %v", err)
+	}
+	defer db.Close()
+	store := &ProductionStore{
+		db: db,
+		capacityCheck: fakeCapacityCheckProbe{result: CapacityCheckResult{
+			Status:            "ok",
+			ActiveConnections: 254,
+			KafkaLag:          0,
+		}},
+	}
+
+	health, err := store.OpsHealth(context.Background())
+	if err != nil {
+		t.Fatalf("OpsHealth returned error: %v", err)
+	}
+	if health.CapacityFindings == nil || len(health.CapacityFindings) != 0 {
+		t.Fatalf("OpsHealth should expose an empty capacity findings array, got %#v", health.CapacityFindings)
+	}
+}
+
 func TestVehicleServiceOverviewMatchesPartialKeyword(t *testing.T) {
 	overview := VehicleServiceOverview{
 		VIN:   "LB9A32A24R0LS1426",