Worked on the web-platform-tests/wpt repository to improve test suite stability by addressing issues related to the Sec-Browsing-Topics image header tests. Using JavaScript and Python, reverted a recent change that had introduced instability, carefully removing associated test files and utility scripts tied to image loading and header validation. This disciplined rollback restored reliability across browsers and environments, reducing test flakiness and maintenance overhead. Emphasized clear documentation and repository hygiene to support future audits and ongoing maintenance. The approach focused on isolating the revert to minimize risk, ensuring that other tests and core functionality remained unaffected while maintaining high code quality standards.