Worked on the sst/opentui repository to enhance input reliability for multilingual text by addressing a critical bug in Unicode surrogate pair handling within the input buffer. Focused on buffer management and input handling using TypeScript, the solution ensured that emoji and CJK characters were processed as atomic units, preventing misrepresentation and the introduction of replacement characters. Regression tests were added to cover both emoji-only and mixed ASCII scenarios, strengthening the testing pipeline and safeguarding against future regressions. Collaboration with peers through code review contributed to improved code quality and shared ownership, resulting in a more robust and reliable input parsing path.