replaced model to HG

agent.py

@@ -16,6 +16,7 @@ from langchain_openai import ChatOpenAI
 from langchain_core.messages import AnyMessage, HumanMessage, SystemMessage
 from langchain_core.tools import tool
 from pydantic import BaseModel, Field
+from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace
 
 from dotenv import load_dotenv
 load_dotenv()
@@ -271,9 +272,15 @@ def transcribe_audio(file_path: str) -> str:
         return f"Transcription failed: {e}"
 
 
-llm_fast = ChatOpenAI(model="gpt-4o-mini", temperature=0)   # основной агент
-llm_strong = ChatOpenAI(model="gpt-4o", temperature=0)
+# llm_fast =  #ChatOpenAI(model="gpt-4o-mini", temperature=0)   # основной агент
+# llm_strong = ChatOpenAI(model="gpt-4o", temperature=0)
 
+llm = HuggingFaceEndpoint(
+    repo_id="Qwen/Qwen2.5-72B-Instruct",
+    huggingfacehub_api_token= os.environ["HF_TOKEN"]
+)
+
+llm_fast = ChatHuggingFace(llm=llm, verbose=True)
 
 tools = [
     web_search,