this is very cool.

another interesting open-source project for imperfect-information game solving is DeepMind's OpenSpiel:

https://github.com/deepmind/open_spiel

However as far as poker goes, I believe they only provide toy versions of the game, even though theoretically you could put in your own implementation.

I've noticed that in this part of the AI world, things tend to be closed-source for whatever reason and I think that limits the ability to learn. Seems good to see that changing.