fix(songselect): category jump fallback to song_type when category missing

public/src/js/songselect.js

@@ -2965,6 +2965,13 @@ class SongSelect{
 			var categoryName = song.category
 			var originalCategory = song.category
 		}
+		// Fallback: if category is missing, use song_type to enable category jump
+		if(!categoryName){
+			if(song.song_type){
+				categoryName = song.song_type
+				originalCategory = song.song_type
+			}
+		}
 		var addedSong = {
 			title: title,
 			originalTitle: song.title,