Add Memory

Envelope returned by the create, update and delete memory routes.

/search and /list do not use this model — they declare response_model=list[dict] and return the service's rows directly.

message is the only field the memory Lambda has always returned. The remaining fields exist on some responses and are surfaced here because response_model filtering would otherwise discard them before any caller sees them.

result carries the memory-store payload for a create, including the id of the record that was written. Without it a client has to re-list and match on its own metadata to discover the id of the record it just created.

extracted reports whether the Lambda's extraction step produced a structured memory. It is not a stored/not-stored signal. Two responses carry extracted=False:

• the extractor declined the content — no result, nothing was stored;
• the extractor errored and the Lambda fell back to storing the raw messages — result is present and the content was stored.

Callers deciding whether a record exists must therefore test result, not extracted.

Every added field is optional: update and delete responses carry none of them, and a declined create carries extracted without result.