Jike focused on enhancing the reliability and maintainability of the cosmos/ibc-go repository’s test suite by addressing issues related to for-loop variable shadowing. Through a targeted refactor in Go, Jike removed redundant variable declarations within test loops, ensuring proper variable scoping and reducing test flakiness. This work improved the determinism of test outcomes and contributed to more stable continuous integration runs. By applying Go testing best practices and disciplined refactoring, Jike increased the clarity and maintainability of the codebase. The effort centered on bug fixing rather than feature development, demonstrating depth in refactoring and testing within a complex code environment.