Pefoley enhanced developer experience and documentation clarity across google/copybara, google/crubit, and protocolbuffers/protobuf over a two-month period. In google/copybara, Pefoley improved documentation by clarifying the --to-folder flag, ensuring users could test workflows without altering configurations, and fixed a documentation bug to reduce ambiguity. For google/crubit and protocolbuffers/protobuf, Pefoley focused on non-disruptive improvements to diagnostic and error messages, refining output readability and supporting faster debugging without changing core functionality. These contributions leveraged C++, Java, and Markdown, emphasizing code commenting, formatting, and error handling. The work demonstrated careful attention to user experience and cross-repository consistency in developer tooling.