Worked on the HIUMC/UMC-8th-iOS-Study repository, focusing on stabilizing the iOS project by reverting problematic structural and feature changes. Addressed issues introduced by earlier modifications by restoring the codebase to a previously stable state, which improved build reliability and reduced maintenance risk. Utilized Swift and SwiftUI to manage project structure and map-related components, including the rollback of experimental map, search, and Kakao API integrations. Prioritized risk reduction and production stability over new feature development, ensuring a clean baseline for future work. Demonstrated a methodical approach to codebase management, emphasizing reliability and maintainability throughout the two-month contribution period.