Update app_langgraph.py

app_langgraph.py

@@ -15,6 +15,7 @@ from math_tools import multiply, add, subtract, divide
 # from langchain_community.vectorstores import SupabaseVectorStore
 import json
 from langchain_google_genai import ChatGoogleGenerativeAI
+from langchain_alibaba.chat_models import ChatDashScope
 
 # set_debug(True)
 load_dotenv()
@@ -30,20 +31,16 @@ tools = [
 ]
 
 def build_graph():
-    hf_token = os.getenv("HF_TOKEN")
-    llm = HuggingFaceEndpoint(
-        repo_id="Qwen/Qwen2.5-Coder-32B-Instruct",
-        huggingfacehub_api_token=hf_token,
+    dashscope_key = os.getenv("CODING_PLAN_API_KEY")  # 从 Coding Plan 页面获取
+    
+    llm = ChatDashScope(
+        model="qwen3.5-plus",  # Coding Plan 支持的模型 [[6]]
+        dashscope_api_key=dashscope_key,
+        base_url="https://coding.dashscope.aliyuncs.com/v1",  # ⚠️ 关键：Coding Plan 专属 Base URL
+        temperature=0.1,
     )
     
-    chat = ChatHuggingFace(llm=llm, verbose=True)
-    chat_with_tools = chat.bind_tools(tools)
-
-    # llm = ChatGroq(model="qwen-qwq-32b", temperature=0)
-    # llm_with_tools = llm.bind_tools(tools)
-
-
-    chat_with_tools = chat.bind_tools(tools)
+    chat_with_tools = llm.bind_tools(tools)
 
     def assistant(state: MessagesState):
         sys_msg = "You are a helpful assistant with access to tools. Understand user requests accurately. Use your tools when needed to answer effectively. Strictly follow all user instructions and constraints." \