During May 2025, Sther developed and maintained Google Sheets automation features across the deco-cx/apps and deco-sites/mcp repositories. He built a Google Sheets integration app that enables spreadsheet creation, batch and individual value updates, and OAuth 2.0 authentication, leveraging TypeScript and the Google Sheets API. Sther refactored error handling to provide immediate feedback on failures, improving reliability for backend workflows. He also focused on code quality by performing linting, formatting, and dependency upgrades, ensuring maintainable and up-to-date codebases. His work included manifest management and configuration updates, addressing both new feature delivery and ongoing codebase health for full stack environments.