During April 2025, Jiwon Kim enhanced distributed replication reliability and developer experience in the Migorithm/duva repository. Kim introduced a strongly-typed ReplicaRole enum in Rust, replacing fragile string literals with explicit Leader and Follower roles, which improved type safety and reduced the risk of misclassification in cluster communication. By refining peer classification logic for Undecided Replication IDs, Kim increased robustness during cluster startup and reconfiguration. Additionally, Kim corrected the Markdown documentation redirect for command autocompletion, ensuring users access accurate guidance. This work demonstrated depth in backend development, distributed systems, and documentation, resulting in more maintainable and error-resistant infrastructure.