Qianwen Sun enhanced the MicrosoftDocs/azure-dev-docs repository by developing new features for the Modernization Agent CLI, focusing on workflow efficiency and user experience. She introduced an overwrite-existing-plans capability, allowing safer and more flexible plan updates, and integrated built-in help commands to streamline user onboarding and reduce support needs. The work was delivered as an incremental update, demonstrating effective change management and attention to usability. Qianwen applied skills in CLI development, AI integration, and documentation, utilizing Markdown for clear technical communication. Her contributions addressed modernization challenges by reducing manual steps and aligning the CLI tool with evolving team requirements.