feat(kachu-laptop): ✨ add plymouth config

hosts/kachu-laptop/configuration.nix

@@ -26,6 +26,33 @@
     pkiBundle = "/var/lib/sbctl";
   };
   boot.loader.efi.canTouchEfiVariables = true;
+  boot.loader.timeout = 0;
+  boot.plymouth = {
+    enable = true;
+    theme = "bgrt";
+  };
+
+  boot.kernelParams = [
+    "quiet"
+    "splash"
+    "boot.shell_on_fail"
+    "loglevel=3"
+    "rd.systemd.show_status=false"
+    "rd.udev.log_level=3"
+    "udev.log_priority=3"
+    "nvidia-drm.fbdev=1"
+  ];
+
+  boot.consoleLogLevel = 0;
+  boot.initrd.verbose = false;
+
+  boot.initrd.kernelModules = [
+    "nvidia"
+    "nvidia_modeset"
+    "nvidia_uvm"
+    "nvidia_drm"
+    "amdgpu"
+  ];
 
   # Use latest kernel.
   boot.kernelPackages = pkgs.linuxPackages_latest;
@@ -89,7 +116,10 @@
 
   users.users.kachu = {
     isNormalUser = true;
-    extraGroups = ["wheel"]; # Enable ‘sudo’ for the user.
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+    ]; # Enable ‘sudo’ for the user.
     packages = with pkgs; [
       tree
       git
@@ -119,6 +149,7 @@
     kdePackages.kio-fuse
     kdePackages.kio-extras
     sbctl
+    sddm-astronaut-theme
   ];
 
   programs.fuse.enable = true;