Add HM bootstrap script and tidy installer workflow

modules/system/home-manager-skel.nix

@@ -0,0 +1,48 @@
+{ ... }:
+
+let
+  flakeText = ''
+{
+  description = "Home Manager configuration of admin";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { nixpkgs, home-manager, ... }: {
+    homeConfigurations."admin" = home-manager.lib.homeManagerConfiguration {
+      pkgs = nixpkgs.legacyPackages.x86_64-linux;
+      modules = [ ./home.nix ];
+    };
+  };
+}
+'';
+
+  homeText = ''
+{ config, pkgs, ... }:
+
+{
+  home.username = "admin";
+  home.homeDirectory = "/home/admin";
+  home.stateVersion = "25.05";
+
+  home.packages = [ pkgs.ptyxis ];
+
+  home.file = { };
+
+  home.sessionVariables = { };
+
+  programs.home-manager.enable = true;
+}
+'';
+in
+{
+  environment.etc = {
+    "skel/.config/home-manager/flake.nix".text = flakeText;
+    "skel/.config/home-manager/home.nix".text = homeText;
+  };
+}