[lobstrosity420]

The CLOG approach is not that novel. It's the same tech that Laravel Livewire, Rails Hotwire and Phoenix Liveview are pioneering. I mentioned GTK because your original comment hadn't mentioned you needed browser-native functionality specifically. For that, you would be well served with CLOG or you can try something like HTMX with a CL backend that serves just HTML.

I wouldn't go as far as to say CL got left behind in the journey, it's still very much alive. But if you want to go with something with more mainstream appeal (not a bad want IMO) there's always Clojure.