Worked on production build optimization and localization enhancements across zed-industries/claude-code-acp and payloadcms/payload. In claude-code-acp, improved dependency management by moving development-only type definitions for Express from production to development dependencies, reducing the final bundle size and streamlining deployment. In the payload repository, focused on front-end internationalization by refining Chinese translations, correcting string inconsistencies, and improving spacing between alphanumeric and Chinese text for better readability. Leveraged JavaScript and TypeScript to implement these changes, emphasizing maintainable code and efficient delivery. The work addressed both performance and user experience, particularly for Chinese-speaking users, over the course of one month.