Contributed a focused documentation enhancement to the zauberzeug/rosys repository by developing a troubleshooting guide for installing the Cairo library on macOS, addressing a common setup challenge for RoSys users. The work centered on improving onboarding and environment reproducibility through clear, step-by-step instructions using Homebrew, with all guidance authored in Markdown. The pull request included detailed motivation, implementation notes, and progress criteria, reflecting a documentation-first approach and collaborative workflow via GitHub. No bugs were fixed during this period, but the contribution improved setup reliability for macOS users and demonstrated skills in documentation, troubleshooting, and cross-platform dependency management within open-source projects.