Samuv5/InstellarLinux — reverse-engineered prompt

Build me the first usable version of Instellar OS, a lightweight Arch Linux based desktop system with XFCE that feels fast, clean, and modern.

I want it to boot into a polished XFCE setup with a dark stylish look inspired by Garuda Moka, custom Instellar logo and wallpapers, nice fonts and colors, and sensible panels or dock settings already configured. Keep it minimal, with no random bloat, but include Firefox, pacman support, flatpak, and an easy app store experience through Discover or the closest working option.

Please organize the repo so it includes the theme assets, wallpapers, logo files, basic app list, setup scripts, and clear instructions for how to build or prepare an ISO. The installed system should use Calamares for installation if possible, and should target normal 64 bit PCs with low resource usage.

If you need exact current commands or package names, look up the latest Arch, XFCE, flatpak, and Calamares docs online.