Developed foundational UI and messaging features for the FeatureCraft Assistant within the FEUP-MEIC-DS-2024-25/ai4sd repository, focusing on establishing end-to-end user interaction flows. Built the main interface using React and Next.js, integrating Axios to enable asynchronous message sending and retrieval of assistant history. Structured and styled UI components with CSS to ensure a consistent user experience and facilitate future enhancements. The work delivered a product-ready UI scaffold, including message display and input areas, and connected these components to backend APIs. This initial implementation set the groundwork for rapid iteration and further development of assistant capabilities in the project.