AI history and token cost:
1. Is a "last N messages" history limit planned, and when?
2. With "Include previous messages" OFF, is AI history kept per thread or
per contact? What resets it (resolve, archive, new thread, /start)?
3. Are tool results and images kept in the history and re-sent on every
request?
4. When a resolved or archived chat gets a new message, does AnyChat
re-open the same thread with the old AI history, or start a new one?
5. Knowledge base: how many chunks are added per message, and can we
control the number or size?
6. Is there a token usage report or AI request log per conversation?