Worked on the web-platform-tests/wpt repository to deprecate and remove the web bundle version of directFromSellerSignals, addressing extremely low usage while maintaining the header-based implementation for existing consumers. The approach involved updating JavaScript-based test suites, eliminating obsolete test cases, and introducing a negative test to verify the removal and guard against future regressions. This targeted deprecation reduced maintenance overhead and improved the clarity and stability of the API surface. By focusing on web platform testing and careful code cleanup, the work enhanced CI reliability and made ongoing contributions more straightforward, all without disrupting current workflows or introducing new bugs.