fix

app/api/worlds.py

@@ -105,7 +105,7 @@ async def create_world(
         owner_id=user.id,
         preset_id=preset.id if preset else None,
         name=body.name,
-        description=body.notes,
+        description=preset.description if preset else (body.notes or None),
         language=body.language,
         status="draft",
         current_time="day_1_hour_8",