Check out jjui. While it's not a 1:1 of lazygit, it's better in some ways and lacking in others, but quickly getting better. I really enjoy that it shows you the command every action runs under the hood. Great to expand your knowledge of JJ early on
Have you ever had any experience before with skateboards? Skateboards are one of those things that look so so easy but in reality have a very steep learning curve (however I haven't tried any electric one).
It was originally an OS for cameras. It's a pain to develop on. I believe they used an automated tool to convert a C-codebase to Java (judging from method name, usage of bit-fields instead of enums etc.)
It has a webserver and networking and it can access the filesystem and it can send messages to other users securely. There's also an ntalk kind of app and a simple threaded discussion things but they're more like demo apps than things you'd use intrinsically.
I think it's fair to say the only reason to run this is to develop for it right now, it's not something end users have a use for.