导入方式修改

backend/app/main_graph/nodes/hybrid_router.py

@@ -8,6 +8,7 @@ import json
 from typing import Optional
 from dataclasses import dataclass, field
 from datetime import datetime
+from langchain_core.runnables.config import RunnableConfig
 
 from ..state import MainGraphState
 from ...logger import info, debug
@@ -157,7 +158,7 @@ def _default_result() -> HybridRouterResult:
 
 
 # ========== 主路由节点 ==========
-async def hybrid_router_node(state: MainGraphState, config: Optional[dict] = None) -> MainGraphState:
+async def hybrid_router_node(state: MainGraphState, config: Optional[RunnableConfig] = None) -> MainGraphState:
     """混合路由节点：前置路由，决定走快速路径还是 React 循环"""
     state.current_phase = "hybrid_router"
     query = state.user_query or ""