Gabriella Reyno developed the Who Component – Public Joining Announcement UI for the acm-ucr/katipunan-pso-website repository, focusing on front end development using React and TypeScript. She implemented a modular, reusable UI block that displays a public joining message with a title, bold statement, and descriptive text, all styled to match the project’s design system. By applying design-system compliant typography and color schemes, Gabriella ensured consistent branding and clear communication for onboarding announcements. Her work established a foundation for future announcement features, maintained a clear commit history, and improved the efficiency of future iterations, though the scope was limited to a single feature.