弃用langgrpah更换deepagent

src/server/deep_agent/agents/init_llm.py

@@ -0,0 +1,23 @@
+from langchain_qwq import ChatQwen
+
+from src.core.config import settings
+
+llm = ChatQwen(
+    model="qwen3.5-flash",
+    max_tokens=3_000,
+    timeout=None,
+    max_retries=2,
+    enable_thinking=False,
+    api_key=settings.QWEN_API_KEY
+)
+
+title_llm = ChatQwen(
+    model="qwen-plus",
+    max_tokens=3_000,
+    timeout=None,
+    max_retries=2,
+    streaming=False,
+    temperature=0.1,
+    top_p=0.8,
+    api_key=settings.QWEN_API_KEY
+)