add role variable, added ghostty terminal, updated flake

flake.nix

@@ -11,6 +11,7 @@
       url = "github:lnl7/nix-darwin/nix-darwin-25.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    ghostty.url = "github:ghostty-org/ghostty";
   };
 
   outputs = inputs @ {
@@ -19,20 +20,22 @@
     nix-flatpak,
     darwin,
     home-manager,
+    ghostty,
     ...
   }: let
     userName = "wyatt";
     userEmail = "wyatt@wyattjmiller.com";
     extraSpecialArgs = {
-      inherit userName userEmail;
+      inherit userName userEmail ghostty;
     };
   in {
     # Primary laptop - MacBook Pro (2023, M3)
     darwinConfigurations."sephiroth" = darwin.lib.darwinSystem {
       system = "aarch64-darwin";
       specialArgs = {
-        inherit userName userEmail;
+        inherit userName userEmail ghostty;
         hostname = "sephiroth";
+        role = "devel";
       };
       modules = [
         ./modules/common
@@ -52,8 +55,9 @@
     nixosConfigurations."cloud" = nixpkgs.lib.nixosSystem {
       system = "x86_64-linux";
       specialArgs = {
-        inherit userName userEmail;
+        inherit userName userEmail ghostty;
         hostname = "cloud";
+        role = "devel";
       };
       modules = [
         nix-flatpak.nixosModules.nix-flatpak
@@ -78,6 +82,7 @@
       specialArgs = {
         inherit userName userEmail;
         hostname = "valefor";
+        role = "server";
       };
       modules = [
         ./modules/common
@@ -101,6 +106,7 @@
       specialArgs = {
         inherit userName userEmail;
         hostname = "ixion";
+        role = "server";
       };
       # modules = [
       #   nix-flatpak.nixosModules.nix-flatpak