append_messages
ChatGPTStore messages in Engram memory, verbatim and automatically chunked + embedded for search. conversation_id is OPTIONAL: omit it to append to the user's default memory (recommended for general 'remember this' requests) — never ask the user for an id. Pass a conversation_id (from create_conversation) only when you want to group a specific topic. The response returns the conversation_id used. Optionally accepts client-encrypted vault entries for secrets detected client-side.






