Update app_langgraph.py

app_langgraph.py

@@ -35,7 +35,7 @@ def build_graph():
     dashscope_key = os.getenv("CODING_PLAN_API_KEY")  # 从 Coding Plan 页面获取
     
     llm = ChatOpenAI(
-        api_key=os.getenv("DASHSCOPE_API_KEY"),
+        api_key=dashscope_key,
         base_url="https://coding.dashscope.aliyuncs.com/v1",  # ⚠️ 关键：DashScope 兼容地址
         model="qwen-plus",  # 支持 qwen-plus, qwen-max, qwen-turbo 等
         temperature=0.1,