During January 2025, work focused on enhancing the InvoicePlane/InvoicePlane repository by addressing a key issue in email template rendering. The developer improved backend logic in PHP by updating template_helper.php to ensure that single-choice custom fields in email notifications display human-readable labels rather than numeric IDs. This targeted code refactoring involved integrating data from mdl_custom_values, resulting in clearer communication for both administrators and customers. By resolving this bug, the changes reduced potential confusion and support inquiries related to automated emails. The work demonstrated backend development skills, careful attention to template rendering logic, and effective data model integration within a PHP environment.