Worked on the renuo/applications-setup-guide repository to update the app initialization documentation, focusing on transitioning Ruby version management from asdf to mise. This change provided clear, current guidance on supported Ruby versions and detailed steps for global mise setup, directly addressing common onboarding challenges and reducing environment-related support questions. The work emphasized documentation best practices and commit traceability, ensuring that future tooling changes are easier to maintain. Utilizing Ruby, Ruby on Rails, and Markdown, the developer improved the onboarding process for new contributors, enabling faster project starts and minimizing compatibility issues by clarifying version requirements and environment configuration steps.