Worked on the apple/foundationdb repository to deliver a reliability-critical idempotency replay improvement using C++ for backend development. The feature ensured that the committedVersion is consistently populated during automatic replay, enhancing transaction durability and consistency. The approach included adding regression guards and post-commit assertions to detect missing committedVersion in AutomaticIdempotencyWorkload, as well as reconstructing the versionstamp from CommitResult when commit_unknown_result occurred. This solution mirrored normal-path behavior and addressed a regression linked to issue #12582, improving client observability and reducing debugging effort in replay scenarios. The work demonstrated depth in transactional reliability and robust backend engineering practices.