Developed a keyboard-driven history navigation feature for the p0deje/Maccy repository, focusing on enhancing input efficiency for macOS users. The work centered on implementing a History Picker that allows users to cycle through clipboard history items by repeatedly pressing a shortcut key while holding modifier keys, with selection confirmed upon modifier release. This required robust event handling and careful management of keyboard states to ensure reliable popup behavior across diverse input scenarios. The solution was built using Swift and SwiftUI, leveraging expertise in macOS development and keyboard shortcut integration to deliver a feature ready for quality assurance and further user testing.