Katie Cooper contributed to the comp423-25s/comp423-25shub.io.git repository by developing a new profile entry for the People section, adding biographical content and a profile photo for Katie Fort. She used Markdown to create the ktcooper_about.md file, focusing on clear documentation and maintainable content structure. The update was designed to be additive, preserving the existing site architecture while enhancing team visibility and onboarding readiness. No bugs were reported or fixed during this period, as the work centered on content quality and accessibility. All changes were tracked through Git, ensuring transparent version control and facilitating future updates to the documentation.