Worked on reliability improvements for the aws/amazon-q-developer-cli project, focusing on robust command execution when invoking editors from agent flows. Addressed a bug where complex EDITOR environment variable values were not parsed correctly, leading to invocation errors and inconsistent behavior with the /editor chat command. Applied shell-like tokenization using shlex::split in Rust to safely separate executables and arguments, ensuring accurate handling of environment-derived commands. This update improved error handling and maintainability by isolating parsing logic, resulting in a more consistent developer experience across CLI and chat flows. The work demonstrated skills in CLI development, environment variable parsing, and Rust programming.