Month: 2025-10 — Sage/carbon repository. Key features delivered include enhanced interaction testing for core UI components (Button and ButtonToggle). Implemented new play functions to simulate user interactions (clicks, focus, hover, and keyboard navigation) for ButtonToggle, and refined Button tests by replacing arbitrary pauses with explicit focus assertions to improve determinism. No major bugs fixed were reported this period; the focus was on test reliability and coverage. Overall impact: Strengthened test stability, reduced flaky failures in CI, and accelerated validation of UI behavior for common components, enabling faster and more reliable releases. Technologies/skills demonstrated: test automation design, UX interaction testing, Play-function style test orchestration, test refactoring for determinism, and maintainable test coverage in a production-grade UI library.