Ivan Rusia enhanced the core-ds/core-components repository by expanding the Confirmation UI to support both domestic and international phone numbers. He extended the 'texts' prop in the Confirmation component, enabling it to accept and render phone numbers as tel: links, which allows users to initiate direct contact from the interface. This feature was implemented using React and TypeScript, with careful attention to component development and front-end best practices. The update improves user outreach and streamlines verification workflows, while also laying the foundation for future internationalization. Ivan focused on maintainability and clear ownership, delivering a targeted feature without introducing new bugs.