move model details to env variable

app.py

@@ -76,9 +76,10 @@ tools = [{"type": "function", "function": record_user_details_json},
 class Me:
 
     def __init__(self):
-        deepseek_api_key = os.getenv('DEEPSEEK_API_KEY')
-        self.model_client = OpenAI(api_key=deepseek_api_key, base_url="https://api.deepseek.com/v1")
-        self.model_name = "deepseek-chat"
+        model_api_key = os.getenv('MODEL_API_KEY')
+        model_base_url = os.getenv('MODEL_BASE_URL')
+        self.model_client = OpenAI(api_key=model_api_key, base_url=model_base_url)
+        self.model_name = os.getenv('MODEL_NAME')   
         self.name = "Ankush Khobragade"
         with open("me/summary.txt", "r", encoding="utf-8") as f:
             self.summary = f.read()