feat: add AST_CHECK_FAILED status, is_accepted helper, ast_rules field

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

problem/migrations/0010_problem_ast_rules.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0.4 on 2026-05-26 02:36
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problem', '0009_alter_problem_accepted_number_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='problem',
+            name='ast_rules',
+            field=models.JSONField(blank=True, default=None, null=True),
+        ),
+    ]

problem/models.py

@@ -83,6 +83,9 @@ class Problem(models.Model):
     flowchart_hint = models.TextField(null=True, blank=True)
     show_flowchart = models.BooleanField(default=False, db_default=False)
 
+    # AST 代码结构检查规则
+    ast_rules = models.JSONField(null=True, blank=True, default=None)
+
     class Meta:
         db_table = "problem"
         constraints = [

problem/serializers.py

@@ -86,6 +86,9 @@ class CreateOrEditProblemSerializer(serializers.Serializer):
 
     flowchart_hint = serializers.CharField(allow_blank=True, allow_null=True, required=False)
 
+    # AST 规则
+    ast_rules = serializers.JSONField(required=False, allow_null=True, default=None)
+
 
 class CreateProblemSerializer(CreateOrEditProblemSerializer):
     pass
@@ -146,6 +149,7 @@ class ProblemSerializer(BaseProblemSerializer):
             "visible",
             "is_public",
             "answers",
+            "ast_rules",
         )
 
     def get_mermaid_code(self, obj):
@@ -196,6 +200,7 @@ class ProblemSafeSerializer(BaseProblemSerializer):
             "accepted_number",
             "statistic_info",
             "answers",
+            "ast_rules",
         )
 
     def get_mermaid_code(self, obj):