nielsvanvelzen/tv-launcher ? reverse-engineered prompt

Build me an Android TV launcher app for big screens that can replace the default launcher on devices like Nvidia Shield and Chromecast with Google TV.

I want the home screen to feel simple and easy to use from a couch, with a top toolbar that can be customized by the user. Let people hide, show, and reorder things like a clock, a settings button, and a TV input source switcher. Below that, add a favorites area for bookmarked apps that can also be hidden or rearranged. Include a channels section for app provided content and watch next style recommendations, plus an all apps screen with a clean grid of installed apps, including mobile apps if possible.

Keep the design polished, fast, and clearly made for televisions, not phones. If you need to look up current Android TV guidance or APIs online, go ahead. I know this is early stage, so focus on getting the main launcher experience working well first.