feat(zeus): add RetroArch

configs/nixos/modules/desktop/emulation/retroarch.nix

@@ -9,7 +9,6 @@
 let
   cfg = config.modules.desktop.emulation.retroarch;
   user = config.user.name;
-  systemDirectory = "/home/${user}/.config/retroarch/system";
 in
 {
   options.modules.desktop.emulation.retroarch = {
@@ -33,7 +32,8 @@ in
           settings = {
             savefiles_in_content_dir = "false";
             savestates_in_content_dir = "false";
-            system_directory = systemDirectory;
+            system_directory = "/home/${user}/.config/retroarch/system";
+            video_fullscreen = "true";
             sort_savefiles_enable = "true";
             sort_savestates_enable = "true";
             cloud_sync_enable = "true";
@@ -55,7 +55,7 @@ in
     };
 
     registry.window-icon.${config.networking.hostName}.retroarch = {
-      class = "retroarch";
+      class = "com.libretro.RetroArch";
       icon = util.glyph "f11b";
     };
   };