update llm tool

requirements.txt

@@ -41,17 +41,21 @@ jsonpointer==2.4
 jsonschema==4.20.0
 jupyter_client==8.6.0
 jupyter_core==5.7.1
-langchain==0.1.20
-langchain-community==0.0.36
-langchain-core==0.1.63
-langchain-google-genai==0.0.10
+
+# ✅ LangChain 相关组件适配 Py3.10 的组合版本：
+langchain==0.1.19
+langchain-core==0.1.62
+langchain-community==0.0.35
+langchain-google-genai==0.0.9
 langchain-groq==0.0.3
-langchain-openai==0.1.7
-langchain-tavily==0.0.4
+langchain-openai==0.1.6
+langchain-tavily==0.0.3
+
 langgraph==0.0.47
 langgraph-checkpoint==2.0.26
 langgraph-sdk==0.1.70
 langsmith==0.1.42
+
 markdown-it-py==3.0.0
 MarkupSafe==2.1.5
 nest-asyncio==1.6.0