更新

backend/rpa_engine/credential.py

@@ -5,7 +5,6 @@ import logging
 from typing import Optional
 
 from rpa_engine.douyin_im.auth import DouyinAuth
-from rpa_engine.douyin_im.frontier import ensure_frontier_ws
 from rpa_engine.douyin_im.session import DouyinImSession
 from utils.cookie_store import analyze_cookie
 
@@ -156,7 +155,9 @@ async def validate_im_session(
             return False, "缺少 sessionid，无法直连 IM"
         return False, "Cookie 不满足 IM 直连条件"
 
-    await asyncio.to_thread(ensure_frontier_ws, session)
+    # Frontier discovery belongs to the worker startup lifecycle. Running it
+    # here populated only this temporary assessment session, so a bulk start
+    # immediately repeated the same signing / query work for every account.
     try:
         auth = DouyinAuth.from_im_session(session)
         # 优先用已持久化的 my_uid，避免每次都发起网络 query_my_uid（uid_tt 是加密串，