Worked on the winfunc/opcode repository to enhance user experience and input reliability in a React-based front end. Focused on improving viewport efficiency for content-heavy pages by implementing dual-phase scrolling and reducing padding, which increased bottom-content visibility. Addressed input method editor (IME) composition handling by introducing explicit state tracking and event coordination in JavaScript and TypeScript, preventing premature submissions for CJK input. Consolidated input subsystem patterns to strengthen reliability and provide clear traceability for future enhancements. The work demonstrated attention to both usability and technical robustness, delivering one new feature and resolving a key bug within a focused one-month development period.