Worked on the talmolab/sleap repository to deliver targeted enhancements to the graphical user interface, focusing on frame selection and count display features. Addressed edge-case slider behavior by refining the mapping logic, ensuring precise user interactions at slider boundaries. Improved the accuracy of frame count reporting by aligning the logic with half-open frame range semantics, which helps prevent off-by-one errors and reduces user confusion. Expanded the automated test suite using Python and parametrized testing to validate slider functionality and handle invalid inputs. The work emphasized GUI development and testing, directly contributing to improved data quality and reliability for end users.