Version con fallas

backend/app/main.py

@@ -23,8 +23,6 @@ from app.models.user import User
 from app.models.ticket import Ticket
 from app.models.comment import TicketComment
 from app.models.attachment import TicketAttachment
-from app.models.audit import AuditLog  # Nuevo modelo para auditoría
-from app.models.refresh_token import RefreshToken  # Modelo para refresh tokens
 
 from app.core.logging import setup_logging
 from app.api.v1.router import api_router