Jordi Baylina focused on enhancing quality assurance and testing processes for the 0xPolygonHermez/zisk repository during June 2025. He consolidated internal test-related commits, including a placeholder test and a formatting adjustment, to improve test reliability and maintainability. Working primarily in Rust and leveraging his software development expertise, Jordi standardized test structures and addressed inconsistencies that previously led to unreliable results. Although no new user-facing features were introduced, his efforts established a more stable foundation for future automated testing. The work demonstrated a methodical approach to code quality, emphasizing long-term maintainability and reducing the likelihood of flaky or inconsistent test outcomes.