Doesn't google docs have fairly robust edit history? If I was a student these days I'd either record my screen of me doing my homework, or at least work in google docs and share the edit history.
If it looks like AI cheating software will be a problem for my children (and currently it has not been an issue), then I'm considering recording them doing all of their homework.
I suspect school admin only has so much appetite for dealing with an irate parent demanding a real time review of 10 hours of video evidence showing no AI cheating.
In general, I don’t really understand educators hyperventilating about LLM use. If you can’t tell what your students are independently capable of and are merely asking them to spit back content at you, you’re not doing a good job.
Sounds as though you do understand it.