This sounds, incredibly hard 😅

Like you mentioned, I always find these cross platform things to be dead ends, but i hadn't heard of compose yet.. 🤔 do you think it can do what flutter and react native couldn't? iOS is such a different beast I struggle to see where any of the code would be similar. Design for apple seems to be the complete opposite of Android (on purpose). UI elements that are on top on Android, on apple they're on the bottom.. etc. Users get used to the style of each and can't function in opposite world, not to mention all the lower level libraries and such.

Anyway, good luck on the search. I'd post it to ostrich.work too, and maybe don't treat it like a bounty if you wanna make progress, more like a contract or collab with a specific dev.. id love to see a desktop version of amethyst. 🎉