> Tools like Electron are, essentially, not a choice

yeah, they really are. people seem to forget that you can simply start a local web server, and direct the user to visit http://localhost:8080. here is one in Go, literally 8 lines of code:

    package main
    import "net/http"
    func main() {
       http.HandleFunc("/", func(w http.ResponseWriter, _ *http.Request) {
          w.Write([]byte("hello world"))
       })
       http.ListenAndServe(":8080", nil)
    }