13,689 new quiz questions in 160 practice islands (grades 3-12), Question.figure, replay rotates the quiz, LaTeX removed from lesson/question text

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

content/serializers.py

@@ -138,6 +138,8 @@ class QuestionSerializer(serializers.Serializer):
     type = serializers.CharField()
     prompt = serializers.CharField()
     options = ChoiceOptionSerializer(many=True)
+    # شکلِ سوال (توصیفِ JSON مثلِ `LessonFigure.diagram`)؛ null یعنی شکل ندارد.
+    figure = serializers.JSONField(allow_null=True, required=False)
 
 
 class QuizQuestionSerializer(serializers.Serializer):
@@ -155,6 +157,7 @@ class QuizQuestionSerializer(serializers.Serializer):
     type = serializers.CharField()
     prompt = serializers.CharField()
     options = ChoiceOptionSerializer(many=True)
+    figure = serializers.JSONField(allow_null=True, required=False)
 
 
 class NodeQuizResponseSerializer(serializers.Serializer):