fix(vm): ensure Plymouth display and fix black screen in Hyprland

- Force essential kernel parameters for VMs (video mode, splash).
- Add necessary virtio drivers to initrd.availableKernelModules.
- Fix black screen in Hyprland by disabling hardware cursors.
- Add fallback wallpaper logic to prevent swww crashes.

modules/home/hyprland.nix

@@ -1,13 +1,22 @@
 { config, pkgs, lib, ... }:
 
 let
-  activeWallpaper = config.nomarchy.wallpaper;
+  activeWallpaper = if config.nomarchy.wallpaper != "" then 
+    config.nomarchy.wallpaper 
+  else "${../../assets/themes/catppuccin/backgrounds/1-totoro.png}";
   hyprlandState = config.nomarchy.hyprland;
 in
 {
+  home.sessionVariables = {
+    WLR_NO_HARDWARE_CURSORS = "1";
+  };
+
   wayland.windowManager.hyprland = {
     enable = true;
     settings = {
+      "cursor" = {
+        "no_hardware_cursors" = true;
+      };
       "general" = {
         "gaps_in" = hyprlandState.gaps_in;
         "gaps_out" = hyprlandState.gaps_out;