Changes to Post Stream

added the new optional request property queued_message_id

added the new optional request property steer

added the new optional request property retry_turn_id

added the new optional request property turn_request_id

the request property file_attachments/anyOf[subschema #1]/items/bucket_path became required

the file_attachments/anyOf[subschema #1]/items/bucket_path request property's minLength was increased from 0 to 1

the bucket_path request property default value was removed

removed the request property chat_id

removed the request property chat_overrides

removed the request property chat_state/anyOf[subschema #1: ChatState]/mentions

removed the request property chat_state/anyOf[subschema #1: ChatState]/preferences

removed the request property enabled_mcp_servers

removed the request property file_attachments/anyOf[subschema #1]/items/file_id

removed the request property retry_from

added the new optional request property chat_state/anyOf[subschema #1: ChatState]/ancestor_names

added the new optional request property chat_state/anyOf[subschema #1: ChatState]/ancestor_uris

added the new optional request property retry_back