During September 2025, Denis Roussel focused on stabilizing expiry indicators within the brain-tec/odoo repository, addressing a key bug affecting product expiry line displays. He refined the UI logic so that red indicators now appear only for expired products, reducing visual clutter and improving clarity for users managing stock. Working primarily with Python and the Odoo framework, Denis enhanced data reliability and user trust in expiry status, which supports more accurate stock planning. His targeted fix demonstrated careful debugging and disciplined pull request practices, resulting in a maintainable code change that improved both the user interface and underlying data consistency.