Add nvidia and ssh to initrd for penguin

systems/x86_64-linux/penguin/default.nix

@@ -2,6 +2,7 @@
   pkgs,
   inputs,
   lib,
+  config,
   ...
 }:
 let
@@ -28,6 +29,19 @@ in
         systemd-boot.enable = true;
         efi.canTouchEfiVariables = true;
       };
+
+      initrd.network = {
+        enable = true;
+        ssh = {
+          enable = true;
+          hostKeys = [ "/etc/secrets/initrd/ssh_host_ed25519_key" ];
+          authorizedKeys = lib.concatLists (
+            lib.mapAttrsToList (
+              name: user: if lib.elem "wheel" user.extraGroups then user.openssh.authorizedKeys.keys else [ ]
+            ) config.users.users
+          );
+        };
+      };
     };
 
     time.timeZone = "Asia/Singapore";
@@ -74,6 +88,10 @@ in
       dockerCompat = true;
       defaultNetwork.settings.dns_enabled = true;
     };
+
+    hardware.graphics.enable = true;
+    hardware.nvidia.open = true;
     system.stateVersion = "25.11";
+
   };
 }