删除无用代码并且新增流程图相关内容

problem/migrations/0004_problem_allow_flowchart_problem_flowchart_data_and_more.py

@@ -0,0 +1,38 @@
+# Generated by Django 5.2.3 on 2025-10-11 14:57
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problem', '0003_problem_answers'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='problem',
+            name='allow_flowchart',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name='problem',
+            name='flowchart_data',
+            field=models.JSONField(default=dict),
+        ),
+        migrations.AddField(
+            model_name='problem',
+            name='flowchart_hint',
+            field=models.TextField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='problem',
+            name='mermaid_code',
+            field=models.TextField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='problem',
+            name='show_flowchart',
+            field=models.BooleanField(default=False),
+        ),
+    ]

problem/migrations/0005_remove_spj_fields.py

@@ -0,0 +1,33 @@
+# Generated by Django 5.2.3 on 2025-10-11 15:22
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problem', '0004_problem_allow_flowchart_problem_flowchart_data_and_more'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='problem',
+            name='spj',
+        ),
+        migrations.RemoveField(
+            model_name='problem',
+            name='spj_code',
+        ),
+        migrations.RemoveField(
+            model_name='problem',
+            name='spj_compile_ok',
+        ),
+        migrations.RemoveField(
+            model_name='problem',
+            name='spj_language',
+        ),
+        migrations.RemoveField(
+            model_name='problem',
+            name='spj_version',
+        ),
+    ]