Iterative fix: cmake configure failed with "RandR headers not found"
because Raylib's GLFW backend requires X11 + GL development packages.
Added standard Raylib Linux deps per their wiki:
- libasound2-dev (audio)
- libx11-dev libxrandr-dev libxi-dev libxcursor-dev libxinerama-dev
- libxkbcommon-dev libwayland-dev
- libgl1-mesa-dev libglu1-mesa-dev
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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