I'll be totally honest, I didn't expect this to ever get any attention at all, much less to get actual constructive feedback!
This was done mostly on a whim to see if I could get AI to make a decently functional game at all. There's a small chance I'll get the spark someday to expand it, but in reality I don't even feel like I have unfinished business with it because I proved the concept to myself and that's what I set out to do.
If it inspires someone else to make a proper game (or even just a little piddly test like this one) once they see how little code it actually takes, I'd be ecstatic!
-- also, yes, I very much recommend using a browser-based Python tool for a code as small as this — I used Google Colab. It saves you from needing to install Python properly for one little thing, and more importantly, it reduces the risk associated with running code you find on the internet on your own install. This code should be pretty easy to read through and tell that there's nothing malicious hidden inside, but it's always better to be safe than sorry.