I was actually just referring to that part of the code and am playing around with the prompting.
In my experience, when dealing with longer context/chains on “cheaper” models combined with negatives in the prompting can also backfire, but it seems Haiku handles this pretty well at the first tries it seems (avoiding usage of “do not” and using terms like “never” or “avoid” helps here btw).
Thanks for the insights.
BTW, small bug (or not?): when u use a persona with a user set-up, the DM participants are: ai-model-bot, me and new-bot-user, strangely this caused the new-bot-user to respond with “Hey ai-model-bot”, instead of “Hey Marc” 
is ai-model-bot there for a reason?