Guillaume Chauvet developed a dynamic theming context for betagouv/agir-front, focusing on updating the page title and ensuring accurate data loading during route transitions. Leveraging Vue.js and TypeScript, he implemented logic to reliably retrieve the active thematiqueId, tightly coupling UI context with navigation to prevent stale data and improve user experience. His work orchestrated theme-based updates so that the document title and data reflected the user’s current selection, reducing confusion and enhancing navigation clarity. Guillaume’s contributions demonstrated a solid grasp of front-end development, routing, and maintainable code practices, delivering a focused feature that improved both usability and code reliability.