Worked on the RabbyHub/Rabby repository to deliver a security-focused UI enhancement that allows users to copy their wallet private key without displaying it on screen, thereby reducing the risk of sensitive information exposure. The feature was implemented using TypeScript and Less, with attention to both frontend development and UI/UX best practices. The private key is rendered within a styled block rather than plaintext, and a copy-to-clipboard button is positioned for user convenience. This approach reinforces security while maintaining a seamless user experience. The work was completed in a single, focused commit, demonstrating careful code quality and traceable development practices.