fix(logging): improve error logging with traceback and logger

routes/chat.py

@@ -1,9 +1,15 @@
 import re
 import sys
+import logging
+import traceback
 from flask import Blueprint, render_template, request
 from services.genai_service import configure_genai
 from logs import get_user_history, save_log
 
+# Configurar logger
+logging.basicConfig(level=logging.ERROR)
+logger = logging.getLogger(__name__)
+
 chat_bp = Blueprint('chat', __name__)
 
 
@@ -45,7 +51,10 @@ def chat(user_id):
             save_log(user_id, history, response)
 
         except Exception as e:
-            print(f"Erro ao usar a IA: {e}")
+            logger.error(f"Erro CRÍTICO ao usar a IA: {e}")
+            logger.error(traceback.format_exc())
+            print(f"Erro ao usar a IA (stdout): {e}", flush=True)
+            print(traceback.format_exc(), flush=True)
             response = "⚠️ A IA está indisponível, retorne em 24h."
 
     formatted_response = None