Worked on frontend and CLI feature development across felixonmars/humanlayer and flox/flox repositories, focusing on usability and safe experimentation. Delivered unified keyboard shortcut workflows in the humanlayer web UI using React and TypeScript, enabling efficient keyboard-driven navigation and discoverability through a status bar indicator and help panel. In the flox CLI, implemented an ephemeral --beta flag in Rust, allowing users to access beta features for a single invocation without persisting configuration changes. Emphasized robust testing and code quality, ensuring new CLI features were non-persistent and invisible in help output. Prioritized feature delivery, accessibility, and maintainability throughout both projects.