During November 2024, Arenz enhanced the Assistant module in the slackapi/bolt-js repository, focusing on type-safety, accessibility, and maintainability. He refactored key utility functions, getThreadContext and saveThreadContext, to strengthen type definitions and runtime safety using TypeScript, which improved both editor support and future extensibility. Arenz also updated CSS to improve accessibility and documentation readability, making the module more approachable for developers. His work included restructuring the Assistant component to streamline future enhancements and onboarding. By concentrating on TypeScript, CSS, and documentation, Arenz delivered a well-structured, maintainable feature that addressed both technical robustness and user experience.