Add what happened next in her chat, typed by hand

"Ella dijo" / "Yo dije": 1 to 20 messages, in order, appended to this contact's conversation. Without sentAt a message goes at "now", after the last one stored, and is flagged as a time not seen (timeKnown: false); with it, at that time (not in the future). No model call and no proposal spent: ask for one with POST /api/v1/contacts/{id}/suggest-message (intent reply). New screenshots go through POST /api/v1/imports/people with contactId. Counts against the plan's monthly messages; the demo may add a few per session.