LLMs know nothing about Unpoly, and quite a bit about htmx. This requires you to actually learn Unpoly, because, well, even pointing your LLM-of-choice at the Unpoly docs (which are quite okay!) makes it regress-to-the-ugly-Javascript-workarounds-mean pretty much on try #1.
I'm not yet sure whether this is a good thing or not -- I'll let you know once my latest iteration of my web framework is finally working as I envisioned, he-said sort-of-jokingly, which should be Soon Now.
But yeah, either alternative still beats React by a country mile, since everything related to that descends into madness right away.
I don’t think there is anything in unpoly that a good llm couldn’t figure out with a look over the docs pretty quickly. It’s pretty simple and has some great functionality, especially if you are shooting for progressive enhancement.