goldstac/talon-apex-simulation ? reverse-engineered prompt

Build me a fun fake operating system that runs as a normal C++17 program in the terminal.

When I launch it, I want it to feel like a real machine booting up, first a boot menu, then some fake kernel startup messages, then it should land me in a shell with a simulated filesystem. Make the shell look and feel like a tiny Linux style system, with simple commands like echo, whoami, date, clear, exit, touch, cat for virtual proc files, and a command that prints a colorful penguin style system logo. I also want basic file editing support by opening files with vim or nvim from inside the fake desktop.

Please include a simple updater that can check GitHub releases and download a newer build if one exists, and make it work on Linux, Windows, and macOS if possible. Keep the whole thing self contained so it just runs as one app and fakes the OS experience in the terminal. If you need to look up current docs online for anything, go ahead.