I was about to come here and say that egui is a terrible choice for web. Everything is rendered in a canvas, so accessibility and extensibility is thrown out of the window. Basic browser functions like pinch-zoom don't work, it has some very wonky visual bugs when resizing the window, interactions have a very noticeable delay, no browser extensions work with this.

This is really not a good solution for web apps, and if you're vibe coding your apps anyway, there isn't any reason not to have a native browser application.