Delivered a complete Spanish localization for the th-ch/youtube-music repository, translating all 457 user-facing strings to enhance accessibility for Spanish-speaking users. Leveraged Weblate to manage the i18n workflow, ensuring full translation coverage and providing clear traceability through commit references and translation status URLs. Focused on JSON-based translation files, the work eliminated language barriers and supported broader market reach and user retention. No major bugs were addressed during this period, with efforts concentrated on feature delivery. Demonstrated proficiency in i18n, localization, and translation processes, establishing a scalable workflow for future language support and ongoing internationalization initiatives within the project.