During May 2025, Hyeonju Song established the foundational scaffolding for the Seminar project within the JBU-LikeLion/13th_FirstSemester repository. She focused on designing a comprehensive directory structure and managing file organization to support future feature development and streamline onboarding. By creating a broad set of new files and directories under the Seminar folder and populating them with placeholder text-based content, she enabled early integration and testing readiness. Her work, primarily involving text-based file management and directory structuring, provided a clear initial data layout. The depth of her contribution lay in setting up a maintainable base for subsequent project expansion.