During September 2025, Zavodil focused on enhancing the developer onboarding experience for the defuse-frontend repository by updating project documentation. He revised the README using Markdown to clarify the setup process, specifically instructing contributors to run bun install before bun dev to ensure all dependencies are installed prior to starting the development server. This targeted documentation change addressed a common source of setup friction, promoting a more reliable and consistent local development environment. While the work was limited in scope, it demonstrated attention to detail in developer experience and workflow standardization, leveraging skills in documentation and familiarity with JavaScript tooling like Bun.