Charles enhanced the wireapp/wire-webapp repository by delivering user-focused pagination improvements, refining the CellsPagination component to provide clearer navigation cues and better accessibility through updated disabled states and aria-disabled semantics. He also improved empty-state handling by dynamically adjusting pagination controls, ensuring a smoother user experience in conversations with no files. In parallel, Charles upgraded the Cells API client within wireapp/wire-web-packages to SDK Alpha10, reworking payloads and query parameters for compatibility with the latest SDK structure. His work leveraged React, TypeScript, and CSS-in-JS, demonstrating a thoughtful approach to UI development and seamless API integration, with careful attention to future extensibility.