During March 2025, Atty focused on improving the reliability of the activate nu command in the jdx/mise repository. Addressing a critical bug, Atty corrected a syntax and output issue that previously caused the command to emit CSV data instead of valid Nu shell scripts when interacting with PATH shim directories. Using Rust and shell scripting, Atty implemented a targeted fix that preserved existing workflows while enhancing automation stability for both users and CI pipelines. The work demonstrated careful environment management and disciplined debugging, resulting in a concise, high-impact code change that reduced troubleshooting time and improved command behavior across environments.