During November 2024, contributed to the leancodepl/flutter_corelibrary repository by developing a new feature that enhances UI customization in Flutter applications. Focused on extending the MarkupText widget, the work introduced a style parameter that allows developers to specify custom text styling and font families, enabling richer typography and consistent branding across consumer apps. The implementation involved updating Dart code, integrating new font assets, and revising documentation such as README.md and CHANGELOG.md to support the 0.1.0 release. No bug fixes were required during this period, as the primary effort centered on feature delivery and establishing a foundation for future UI enhancements.