Worked on the pointfreeco/swift-composable-architecture repository to enhance the correctness and stability of the Reducer’s reduce function. Addressed a potential runtime issue by applying the @_optimize(none) attribute, ensuring the Swift compiler does not optimize away critical reduction logic. This targeted fix improved runtime reliability and clarified the intended behavior of the reduction process, supporting future code maintainability. The work focused on compiler optimizations and Swift, leveraging deep understanding of language internals to resolve a subtle bug. No new features were added during this period, but the contribution strengthened the foundation of the codebase by prioritizing stability and correctness.