Ruiran Xu focused on enhancing front-end reliability and user experience for the bytedance/deer-flow repository by addressing a nuanced issue with form submissions during IME (Input Method Editor) composition. Leveraging React and TypeScript, Ruiran developed an IME-aware Form Submission Guard that introduces an IME-active utility and updates event handlers to respect the composition state. This approach ensures that form submissions are blocked while users are composing text, effectively reducing accidental submissions and aligning with best practices for internationalization. The work demonstrates careful attention to edge-case user interactions and reflects a thoughtful application of frontend development principles to improve usability.