sandbox connected and streaming

deploy/k8s/dev/configs/gateway-config.yaml

@@ -53,13 +53,18 @@ data:
 
     # Kubernetes configuration
     kubernetes:
-      namespace: dexorder-agents
+      namespace: dexorder-sandboxes
       in_cluster: true
-      agent_image: dexorder/ai-client-py:latest
-      sidecar_image: dexorder/ai-lifecycle-sidecar:latest
+      sandbox_image: dexorder/ai-sandbox:SANDBOX_TAG_PLACEHOLDER
+      sidecar_image: dexorder/ai-lifecycle-sidecar:SIDECAR_TAG_PLACEHOLDER
       storage_class: standard
       image_pull_policy: Never  # For minikube dev - use local images
 
+    # Agent configuration
+    agent:
+      # Number of prior conversation turns loaded as LLM context and flushed to Iceberg at session end
+      conversation_history_limit: 20
+
     # DragonflyDB (Redis-compatible, for hot storage and session management)
     redis:
       url: redis://dragonfly:6379
@@ -76,6 +81,7 @@ data:
       ohlc_catalog_uri: http://iceberg-catalog:8181
       ohlc_namespace: trading
       s3_endpoint: http://minio:9000
+      conversations_bucket: warehouse  # S3 bucket for conversation Parquet cold storage
 
     # Event router (ZeroMQ)
     events: