Andrew McNab enhanced the ghostty-org/ghostty repository by improving code documentation for palette configuration, focusing on developer onboarding and long-term maintainability. He introduced a practical in-code example that clarifies palette usage, making configuration syntax more accessible for future contributors. Using Zig and applying configuration management and documentation standards, Andrew established a clear pattern for inline documentation within the codebase. This approach addressed the need for clearer guidance, reducing onboarding time and lowering support queries. While the work was limited to documentation rather than feature development or bug fixes, it provided foundational clarity that supports faster onboarding and future feature work.