累死了，删除了所有跨平台逻辑，进行了表迁移

fix_migration_history.py

@@ -0,0 +1,35 @@
+"""
+修复 django_migrations 表中的旧 app 名称引用。
+在服务器上执行: python manage.py shell < fix_migration_history.py
+或: python manage.py shell
+然后粘贴此脚本内容
+"""
+from django.db import connection
+
+APP_NAME_MAPPINGS = {
+    'houtai': 'backend',
+    'yonghu': 'users',
+    'dingdan': 'orders',
+    'peizhi': 'config',
+    'shangpin': 'products',
+    'shangdian': 'shop',
+    'dengji': 'rank',
+}
+
+with connection.cursor() as cursor:
+    for old_name, new_name in APP_NAME_MAPPINGS.items():
+        cursor.execute(
+            "SELECT COUNT(*) FROM django_migrations WHERE app = %s",
+            [old_name]
+        )
+        count = cursor.fetchone()[0]
+        if count > 0:
+            cursor.execute(
+                "UPDATE django_migrations SET app = %s WHERE app = %s",
+                [new_name, old_name]
+            )
+            print(f"已更新 {count} 条记录: {old_name} -> {new_name}")
+        else:
+            print(f"无需更新: {old_name} (无记录)")
+
+print("\n修复完成！请运行 python manage.py migrate")