fix(theme): prevent base module from forcing catppuccin package

The base theme module was hardcoded to default cfg.package to pkgs.catppuccin, which caused other themes like Tokyonight to unintentionally build the full Catppuccin package. Moved the package definition to the catppuccin module and set the base default to emptyDirectory.

Author: khaneliman

modules/nixos/theme/catppuccin/default.nix

@@ -84,6 +84,7 @@ in
 
     (mkIf cfg.enable {
       khanelinix.theme.enable = true;
+      khanelinix.theme.package = cfg.package;
 
       assertions = [
         {

modules/nixos/theme/default.nix

@@ -92,11 +92,8 @@ in
 
     package = mkOption {
       type = types.package;
-      default = pkgs.catppuccin.override { inherit (cfg.selectedTheme) accent variant; };
-      description = ''
-        The `spotifyd` package to use.
-        Can be used to specify extensions.
-      '';
+      default = pkgs.emptyDirectory;
+      description = "The primary theme package to install system-wide.";
     };
   };