fix: api_auth.py 补 import threading(会话锁依赖,首次请求初始化 APIRouter 时才触发,启动正常但访问 500)

core/api_auth.py

@@ -15,6 +15,7 @@ import json
 import hashlib
 import time
 import secrets
+import threading
 from typing import Dict, List, Optional
 from dataclasses import dataclass
 from functools import wraps