Edit: i now see there's a separate LICENSE file in the github repo, but (A) that's not what this post directly links to, nor (B) is there any mention of that license in the source file.
"PolyForm Noncommercial License 1.0.0"
(free for non-commercial) ^ I'm not sure it's the best license though, actually gpt 5.4 says it's a bad idea, but after a long puzzling wheather to make it GPL free for everything or refrain from posting on github at all i picked the middleground...i may change it later.