Replace the standalone homeConfigurations output with the Home Manager
NixOS module, so a single nixos-rebuild applies both the system and the
user configuration.
- flake.nix: import home-manager.nixosModules.home-manager, set
home-manager.users.leo, drop the now-unused pkgs let-binding
(allowUnfree comes from configuration.nix via useGlobalPkgs)
- home.nix: drop home.username/homeDirectory and
programs.home-manager.enable, all provided by the module
- README.md: remove the separate install and home-manager switch steps
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FStCxmGBXQUWjgN2xMSvjU
