rename sysadmin module to base-server

common/base-server/default.nix

@@ -0,0 +1,18 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.qenya.base-server;
+in
+{
+  options.qenya.base-server.enable = mkEnableOption "Base configuration for headless servers";
+
+  config = mkIf cfg.enable {
+    time.timeZone = "Etc/UTC";
+
+    # Allow remote deployment with colmena
+    deployment.targetUser = null;
+    security.sudo.wheelNeedsPassword = false;
+    nix.settings.trusted-users = [ "@wheel" ];
+  };
+}