Mavrevilla Revilla developed the foundational SIA Web Application Foundation for the AI-Artisans/sia_it42s1 repository, focusing on backend architecture using PHP and CodeIgniter. Over the course of one month, Mavrevilla established a robust project skeleton, including configuration files, controllers, models, and views, to support rapid feature development and maintain a clear MVC separation. The work centered on scaffolding and project setup, ensuring a consistent deployment process and a maintainable codebase for future enhancements. While no bugs were addressed during this period, the depth of the initial architecture laid a solid groundwork for scalable web development within the project.