SnowOS-Linux/SnowOS — reverse-engineered prompt

Build me a simple SnowOS project that turns a plain Ubuntu Server LTS install into a customized desktop style system called SnowOS.

I want it to feel like a lightweight Ubuntu based distro customization, not a whole new OS from scratch. It should have an installer script that copies the right system files into place, adds the SnowOS branding and wallpaper, and lets the user choose a graphical interface during setup if that’s possible. Keep the experience friendly and straightforward for someone starting from Ubuntu Server or regular Ubuntu.

Please keep the repo organized like a real distro customization project, with the system files under the usual places and one main install script that does the setup. If the README mentions SnowOS package tools like spkg or spkg get, include placeholders or basic setup for them rather than inventing a huge package manager. Make it easy to test on Ubuntu LTS, and add a clear README with install steps, what it changes, and any warnings. Look up current Ubuntu docs online if you need to.