During February 2026, Zzing1031 contributed to the pointfreeco/swift-composable-architecture repository by delivering a focused code cleanup in the RootCore module. They identified and removed the unused DefaultIsolation actor, which had been introduced in a previous update but was never referenced. This targeted refactoring, implemented in Swift, reduced dead code and clarified the core architecture, making the codebase easier to navigate and maintain. By eliminating unnecessary components, Zzing1031 improved maintainability and reduced potential confusion for future contributors, particularly during code reviews and onboarding. The work demonstrated a disciplined approach to clean code and architectural clarity without altering public behavior.