Thanks for the feedback, I'll be updating the readme to include more details on those kinds of things.
Currently, it doesn't have the functionality to package the app for you. That'll be shipped in 0.3.0 in January. The binaries are very tiny though. For now, a Neel app opens in a chrome browser window. It opens in app mode by default, but you can have it simply open a window in a new tab if you'd like. In 0.3.0, the plan is to simply use the system window and load the URL there. like you mentioned above. My vision is to eventually have Neel become a framework "similar" to Electron but definitely with none of its downsides.