fix: 启用服务号回调、协议强制签署校验、消息会话数据修复配套接口

Co-authored-by: Cursor <cursoragent@cursor.com>

peizhi/migrations/0018_xcx_xieyi_must_sign.py

@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('peizhi', '0017_xcx_xieyi'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='xcxxieyi',
+            name='must_sign',
+            field=models.BooleanField(default=True, verbose_name='是否强制签署'),
+        ),
+    ]