Jindra Vratislav contributed to the MONETA-SmartBanka/localization-json repository by implementing new localization keys for the 'Smart Services' and 'Sales' menu entries, supporting the application's internationalization and future UI expansion. Working primarily with JSON and applying internationalization best practices, Jindra ensured that the UI could be easily adapted for multiple languages as the product evolves. The work was delivered as a single feature, with all changes traceable to a specific commit for transparency. While the scope was focused and did not involve bug fixes, the contribution laid the groundwork for scalable localization and aligned with the product’s roadmap requirements.