Did you really just compare this to desktop apps? Stop playing games.

Ok I will bite. in the realm of desktops, what is the "backend"?....

But also lets assume you are talking about c/rust what ever code. Then you saying that because qt/gtk does not generate something for that code that is equivalent? This is such a reach. First The c code does not need to render a initial output before qt or gtk kicks in for starters. sounds like you just want to boil the ocean. F it, lets reinvent TCP everyone...

Also just gonna put this out there, what is your web agent if not a desktop app...

But really I can't even with this. I'm looking for sensible solutions to this real problem. I guess throwing your hands up and saying everything sucks is an option but I don't have time to think like that.