System configuration lives in /home/sumeet/.config/nixos.

Project Object lives at home/packages/project-object. The Command Center path is a symlink to that single source.

Rebuild with:
  sudo nixos-rebuild switch --flake /home/sumeet/.config/nixos#kirax1

The old non-flake /etc/nixos/*.nix files and backups were removed after migrating to flakes.