I'm an Australian software developer in the midst of changing careers into primary school teaching at the moment. I still check Hacker News every day out of habit. Perhaps the overlap is stronger than you think!
I've recently worked on my own AI-assisted learning site to scratch my own itch for learning the Ukrainian language: https://naholosy.com .
Nothing in the primary learning space yet... However, I'm also in the final year of a masters and will be producing a self-study on how to leverage my software background to improve teaching outcomes for Australian teachers. I've been thinking about the various ways that I might use my knowledge of students' progression and misconceptions in order to generate tailored exercises to help them whilst saving the labour of manually fitting to a template.
Your work looks VERY highly aligned with the sorts of things I might want to do. I would love to reach out to you in the future and discuss your approaches and/or possible ways to collaborate.
I'll drop you an email when I can. My own is topbenteacher AT protonmail.com