fix: add /etc/xdg to XDG_CONFIG_DIRS for GNOME session

home/hosts/work/default.nix

@@ -77,6 +77,8 @@ in
 
   nixpkgs.config.allowUnfree = true;
 
+  xdg.systemDirs.config = [ "/etc/xdg" ];
+
   home = {
     stateVersion = "25.05";
     inherit username;