Worked on the increments/qiita-cli repository over a two-month period, focusing on improving documentation quality and modernizing the development environment. Addressed documentation accuracy by correcting a grammatical error in the Japanese README, enhancing clarity and professionalism for users. Upgraded the minimum Node.js runtime requirement to version 20.0.0, aligning the project with current security standards and enabling access to newer language features. Updated CI/CD workflows and documentation to reflect these changes, reducing onboarding friction and support overhead. Utilized Markdown and YAML to manage documentation and configuration, demonstrating attention to maintainability and alignment with evolving best practices in open-source development.