Worked on reliability and documentation improvements across two open source repositories. In the NixOS/nix project, addressed a critical bug in environment management by implementing robust argument parsing and input validation for the nix-env priority flag, replacing std::stoi with string2Int in C++ to prevent invalid values and reduce parsing errors. This change enhanced error handling and reduced the risk of misconfiguration in production environments. Later, contributed to coder/code-server by correcting a typo in the module registry URL within Markdown documentation, ensuring accurate user guidance. Demonstrated attention to detail and technical writing skills while maintaining disciplined commit practices and repository standards.