Scott Haseley contributed to both the tc39/agendas and mozilla/gecko-dev repositories over a two-month period, focusing on meeting governance and web performance. In tc39/agendas, he implemented a time-bound attendance constraint for AsyncContext discussions, updating agenda documentation to improve scheduling consistency and accountability. In mozilla/gecko-dev, Scott enhanced soft navigation stability and Largest Contentful Paint (LCP) reliability by refining DOM mutation heuristics and expanding detection to image source changes, while reverting a flaky test to improve reliability. His work leveraged JavaScript, HTML, and web platform testing skills, demonstrating a methodical approach to documentation, browser testing, and performance optimization.