Worked on refreshing the command-line interface for the rustfs/rustfs repository, focusing on usability and reliability improvements using Rust and CLI development skills. The project involved refactoring CLI parsing logic to remove the unreachable! macro, which reduced potential runtime panics and improved code clarity. Command result handling was enhanced to provide clearer error reporting and greater stability. The autogenerated help subcommand was eliminated, resulting in a cleaner, more intuitive top-level help experience while preserving expected help behavior. Lint-driven refactoring was applied throughout to maintain code quality and simplify ongoing maintenance, ultimately reducing onboarding friction for new contributors and users.