Hashini Nanayakkara developed user sign-in design assets for the Chameleon-company/MOP-Code repository, focusing on both wireframes and high-fidelity mockups to support light and dark mode consistency. She established UX standards and design tokens using Figma and UI/UX design principles, ensuring a cohesive user experience across themes. Her work laid the foundation for Sprint 1 and 2 development by providing clear, implementation-ready design artifacts, which reduced ambiguity for frontend and QA teams. Although no code changes were released, her contributions enabled rapid frontend development and improved sprint readiness, demonstrating depth in design systems and cross-theme user interface planning.