Worked on the oxidecomputer/crucible repository to streamline and refactor the test suite, focusing on block range handling within Rust-based proptests. The main contribution involved removing the ImpactedAddr struct and migrating tests to use absolute block addresses, which simplified the underlying logic and improved overall readability. This code cleanup reduced maintenance overhead and made the test scaffolding more accessible for new contributors. The work demonstrated skills in Rust, code refactoring, and unit testing, resulting in a more maintainable and understandable test harness. No major bugs were addressed during this period, with efforts concentrated on enhancing test clarity and maintainability.