Thanks for your enthusiasm about this project. I’ve been asked this already, so I guess I’ll mention it here as well.
I do indeed have plans to backport Python 3.13 to Debian bookworm. However there still is some time left, and I am working on a different backporting solution already which should be more representative of how Debian actually builds their packages. Hopefully that will allow for more automated testing. I’ll give that a try first and see if I can make it work.