Worked on improving code reliability and maintainability for the langgenius/dify repository by addressing a subtle but critical issue in method overriding. Focused on backend development using Python and object-oriented programming principles, the work involved adding missing @override decorators to key classes such as RemoteSettingsSourceFactory and RAG extractors. This targeted bug fix aligned the codebase with established conventions, reducing the risk of runtime and behavioral inconsistencies. By enforcing clearer coding standards, the changes enhanced readability and made onboarding easier for future contributors. The approach demonstrated attention to detail and a commitment to robust, maintainable backend systems within the project.