Update app.py

app.py

@@ -1,46 +1,3 @@
-# -*- coding: utf-8 -*-
-"""chatbot
-
-Automatically generated by Colab.
-
-Original file is located at
-    https://colab.research.google.com/drive/1ZBbgzg8TvtDp13fmfvJolHegnlAiN70C
-"""
-
-OPENROUTER_API_KEY= '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'
-
-!pip install python-dotenv
-
-!pip install langchain-community --quiet
-
-!pip install -U langchain langchain-community --quiet
-
-!pip install gradio --quiet
-
-!pip install -U langchain-openai --quiet
-
-import os
-from dotenv import load_dotenv
-from langchain_openai import ChatOpenAI
-import gradio as gr
-
-# Carrega a chave do .env
-load_dotenv()
-api_key = os.getenv("OPENROUTER_API_KEY")
-# Verifica se a chave está disponível
-if not api_key:
-    raise ValueError("❌ Variável OPENROUTER_API_KEY não encontrada.")
-
-# Define as variáveis que o LangChain espera
-os.environ["OPENAI_API_KEY"] = api_key
-os.environ["OPENAI_API_BASE"] = "https://openrouter.ai/api/v1"
-
-# Instancia o modelo
-llm = ChatOpenAI(
-    model="deepseek/deepseek-r1:free",
-    temperature=0.5
-)
-
 # Função simples sem histórico
 def responder(mensagem):
     try: