Debug demo map: four allied masters with every room and creature against an endless hero gate

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lang/hr.lang

@@ -390,6 +390,7 @@ set.debug_trigger_zones = Prikaži zone okidača
 set.debug_command_markers = Prikaži debug oznake naredbi
 set.debug_path_lines = Prikaži linije putanja
 set.debug_holiday = Blagdan
+set.debug_demo_map = Pokreni demo kartu
 val.halloween = Halloween
 val.christmas = Božić
 val.easter = Uskrs