Iliouzoun developed a Right-Side Active Tab Indicator feature for the zen-browser/theme-store repository, enabling users to reposition the active tab indicator to the right side of the tab background. The implementation involved updating CSS styling to ensure consistent rendering across different themes and introducing a new user preference managed through JSON configuration. Focusing on front end development, Iliouzoun maintained a clear and minimal patch scope, delivering a single, user-facing feature with direct commit traceability. The work addressed a specific user experience improvement, allowing for greater customization while minimizing risk and complexity, and demonstrated careful attention to maintainability and repository standards.