move Kafka broker from hermes-db to siriusdevops-db kustomization

Trading services depend on Kafka (trading-kafka.customer1.svc.cluster.local:9092)
but it was never deployed — lived under hermes-db kustomization which isn't
applied. Move to siriusdevops-db where trading infra belongs.

Also remove stale redis-cluster.yaml reference from hermes-db (file missing).

apps/base/customer1/hermes-db/kustomization.yaml

@@ -8,7 +8,5 @@ resources:
   - agent-memory-db.yaml
   - agent-memory-rag-db.yaml
   - hermes-scheduled-backup.yaml
-  - kafka-broker.yaml
-  - redis-cluster.yaml
   - rag-init-sql-configmap.yaml
   - rag-init-job.yaml

apps/base/customer1/siriusdevops-db/kustomization.yaml

@@ -11,3 +11,5 @@ resources:
   # Trading platform DB (migrated from hermes-pgdb)
   - trading-db-credentials.yaml
   - trading-data-db.yaml
+  # Kafka broker (moved from hermes-db)
+  - kafka-broker.yaml