Worked on enhancing localization processing for the OfficeDev/teams-toolkit repository by implementing template-function support in manifest localization, specifically enabling $[file(...)] syntax for dynamic data inclusion. Refactored the localization resolution path to accept a DriverContext, allowing context-aware processing during createAppPackage and validate flows. Developed comprehensive unit tests to cover asynchronous file reading and error handling, ensuring robust and reliable localization workflows. Utilized TypeScript and JavaScript for full stack development, focusing on async I/O and function processing pipelines. These improvements reduced manual corrections, enabled more flexible localization data, and improved the reliability and maintainability of the release process.