During this period, contributed to reliability and data integrity improvements across two repositories. In NapCatQQ, addressed HTTP API GET handling by correcting a case-sensitive method comparison, ensuring accurate request recognition and maintaining code clarity through linting and minor refactoring. For MaiMBot, implemented a robust local storage solution using atomic write operations and backup mechanisms to safeguard against data corruption, complemented by targeted tests for exceptional scenarios. Leveraged Python and TypeScript to enhance backend reliability, focusing on error handling, file operations, and comprehensive unit testing. These efforts elevated code quality, reduced regression risk, and delivered tangible business value through improved maintainability.