add end_time

problemset/migrations/0007_problemset_end_time.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0 on 2026-03-16 15:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problemset', '0006_remove_is_displayed_field'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='problemset',
+            name='end_time',
+            field=models.DateTimeField(blank=True, null=True, verbose_name='截止时间'),
+        ),
+    ]