Worked on stabilizing localization and internationalization within the sst/opencode repository by addressing a critical bug related to duplicate localization keys. Focused on improving TypeScript type safety and runtime reliability, the developer removed redundant keys across all locale files, which resolved persistent TypeScript errors and prevented potential localization conflicts during builds. This effort enhanced the overall quality and maintainability of the i18n data, ensuring smoother release cycles and reducing the risk of future regressions. The work established a clear pattern for localization hygiene, leveraging TypeScript and i18n best practices to streamline future updates and lower ongoing maintenance overhead for the project.