Over a two-month period, contributed targeted bug fixes to open-source C projects, focusing on code quality and user experience. In the ramsey/php-src repository, addressed dead code in the URL output handler by removing a redundant else branch and refining the handling of ZSTR_LEN() return values, which improved robustness and maintainability. Later, in the picnixz/cpython repository, clarified error messaging for the readline.append_history_file function, updating documentation and validation to specify non-negative elements, thereby reducing user confusion. Work emphasized C programming, code refactoring, and error handling, with careful attention to traceability and clear commit messaging for future maintainability.