We can dynamically attach knowledge bases for inbound chat via agent_override.conversation_flow.knowledge_base_ids, but create-sms-chat does not appear to support the same override shape.
Request: add support for passing a conversation-flow knowledge base override when creating outbound SMS chats, equivalent to the inbound webhook agent_override behavior.
Use case: a single shared chat agent can serve multiple organizations/locations without hardcoding a customer-specific knowledge base into the agent config. Today, outbound SMS either needs no KB or a dedicated agent per KB, while inbound can stay generic and attach the KB dynamically.