fix(platform): avoid fake redis online keys

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

@@ -178,10 +178,11 @@ func (m *MockStore) QualityIssues(_ context.Context, query url.Values) (Page[Qua
 
 func (m *MockStore) OpsHealth(context.Context) (OpsHealth, error) {
 	summary, _ := m.DashboardSummary(context.Background())
+	redisOnlineKeys := 92
 	return OpsHealth{
 		LinkHealth:       summary.LinkHealth,
 		KafkaLag:         summary.KafkaLag,
-		RedisOnlineKeys:  92,
+		RedisOnlineKeys:  &redisOnlineKeys,
 		TDengineWritable: true,
 		MySQLWritable:    true,
 	}, nil

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

@@ -135,7 +135,7 @@ type QualityIssueRow struct {
 type OpsHealth struct {
 	LinkHealth       []LinkHealth `json:"linkHealth"`
 	KafkaLag         *int         `json:"kafkaLag"`
-	RedisOnlineKeys  int          `json:"redisOnlineKeys"`
+	RedisOnlineKeys  *int         `json:"redisOnlineKeys"`
 	TDengineWritable bool         `json:"tdengineWritable"`
 	MySQLWritable    bool         `json:"mysqlWritable"`
 }

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

@@ -377,8 +377,6 @@ func (s *ProductionStore) OpsHealth(ctx context.Context) (OpsHealth, error) {
 		mysqlStatus = "error"
 		mysqlDetail = err.Error()
 	}
-	var redisKeys int
-	_ = s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM vehicle_realtime_snapshot WHERE updated_at >= DATE_SUB(NOW(), INTERVAL 1 MINUTE)`).Scan(&redisKeys)
 	return OpsHealth{
 		LinkHealth: []LinkHealth{
 			{Name: "MySQL realtime", Status: mysqlStatus, Detail: mysqlDetail},
@@ -386,8 +384,8 @@ func (s *ProductionStore) OpsHealth(ctx context.Context) (OpsHealth, error) {
 			{Name: "vehicle_realtime_location", Status: "ok", Detail: "读取实时位置表"},
 			{Name: "TDengine raw_frames", Status: tdengineStatus(s.tdengine), Detail: tdengineDetail(s.tdengine)},
 			{Name: "Kafka lag", Status: "warning", Detail: "平台暂未接入 Kafka consumer lag 监控"},
+			{Name: "Redis online keys", Status: "warning", Detail: "平台暂未接入 Redis 在线 key 读取"},
 		},
-		RedisOnlineKeys:  redisKeys,
 		TDengineWritable: s.tdengine != nil,
 		MySQLWritable:    mysqlStatus == "ok",
 	}, nil