Add jellyfinScaleFactor option to kodi role for UI scaling

roles/kodi/default.nix

@@ -14,6 +14,11 @@ in
     wayland = mkOption {
       default = true;
     };
+    jellyfinScaleFactor = mkOption {
+      type = types.nullOr types.float;
+      default = null;
+      description = "Scale factor for Jellyfin Media Player UI (e.g., 1.5 for 150% scaling)";
+    };
     appLauncherServer = {
       enable = mkOption {
         type = types.bool;
@@ -37,6 +42,19 @@ in
       steam-library
       youtube
     ]);
+
+    jellyfinMediaPlayerPkg =
+      if cfg.jellyfinScaleFactor != null
+      then pkgs.symlinkJoin {
+        name = "jellyfin-media-player-scaled";
+        paths = [ pkgs.jellyfin-media-player ];
+        buildInputs = [ pkgs.makeWrapper ];
+        postBuild = ''
+          wrapProgram $out/bin/jellyfinmediaplayer \
+            --add-flags "--scale-factor ${toString cfg.jellyfinScaleFactor}"
+        '';
+      }
+      else pkgs.jellyfin-media-player;
   in mkIf cfg.enable
     {
       users.extraUsers.kodi = {
@@ -50,7 +68,7 @@ in
       };
 
       environment.systemPackages = with pkgs; [
-	jellyfin-media-player
+        jellyfinMediaPlayerPkg
         kodiPkg
         wget
         firefox