Refresh wallpapers and update configs

- Set default stylix wallpaper to “The‑Southern‑Raiders.jpg” and comment
  out the old image.
- Bump helium AppImage to version 0.12.1.1 with updated URL and
  checksum.
- Switch NVIDIA driver package from beta to stable.
- Change “kys” alias to use systemctl poweroff and add “jezus” alias for
  reboot.

modules/core/packages/appimages/helium.nix

@@ -4,11 +4,11 @@
   fetchurl,
 }: let
   pname = "helium";
-  version = "0.11.7.1";
+  version = "0.12.1.1";
 
   src = fetchurl {
-    url = "https://github.com/imputnet/helium-linux/releases/download/0.11.7.1/helium-0.11.7.1-x86_64.AppImage";
-    sha256 = "sha256-qzc135IP5F2btxtOMUGMz+0azJhYL9KI0lcPG2KjcxU=";
+    url = "https://github.com/imputnet/helium-linux/releases/download/${version}/helium-${version}-x86_64.AppImage";
+    sha256 = "sha256-+UE+JqQtxbA5szPvAohapXlES21VBOdNsV6Ej1dRRfs=";
   };
   appimageContents = appimageTools.extract {inherit pname version src;};
 in

modules/drivers/nvidia-drivers.nix

@@ -36,7 +36,7 @@ in {
         # accessible via `nvidia-settings`.
         nvidiaSettings = true;
         # Optionally, you may need to select the appropriate driver version for your specific GPU.
-        package = config.boot.kernelPackages.nvidiaPackages.beta;
+        package = config.boot.kernelPackages.nvidiaPackages.stable;
       };
     };
   };

modules/home/bash/aliases.nix

@@ -50,7 +50,8 @@
 
     # System aliases
     # flush-codium = "sudo killall codium && sudo rm -rf ~/.config/VSCodium/Cache && sudo rm -rf ~/.config/VSCodium/CachedData";
-    kys = "shutdown now";
+    kys = "systemctl poweroff";
+    jezus = "systemctl reboot";
     ookla = "speedtest";
     hypr-cli = "hyprctl clients";