Worked on maintaining and improving the econ-ark/HARK codebase by focusing on code hygiene and stability during January 2026. Addressed a critical bug by systematically correcting parameter typos throughout the Python code, which reduced the risk of runtime errors and enhanced overall code readability. Applied code review and debugging skills to ensure that comments and documentation accurately reflected function signatures, aligning technical documentation with the underlying implementation. No new features were introduced during this period, but the maintenance efforts contributed to a more robust and maintainable project, supporting a stable foundation for future development and Q1 project delivery.