I've got it to be able to place items, and it could even place in inserters next to factories - I was trying to get it to use constraints solver in prolog.

https://github.com/lawless-m/FacRepl

It did make a REPL, in order for it to place objects within the game using a DSL.

I kind of gave up on the Constraints Based bit, and never returned.

Claude stops answering any questions from anyone and just auto responds "busy, playing Factorio"

Just don't ask it to produce paperclips...