add ollama and safe mode

modules/system/server.nix

@@ -1,5 +1,5 @@
-{ lib, ... }: {
-  imports = [
+{ config, lib, ... }: {
+  imports = lib.mkIf (config.specialisation != {}) [
     ./homelab/containers.nix
     ./homelab/gallery.nix
     ./homelab/media.nix
@@ -13,6 +13,8 @@
     ./base.nix
   ];
   
+  specialisation.safe-mode.configuration = {};
+  
   virtualisation = {
     oci-containers.backend = "docker";
     docker = {