openscad-cadlisted

# OpenSCAD CAD Skill Write the model as OpenSCAD code, render it to a PNG, actually look at the PNG, fix what's wrong, and only export STL/3MF once the render looks right. The whole loop runs through the CLI — the human never has to open the OpenSCAD GUI, though they can if they want to tweak the `.scad` file by hand afterward. ## 0. Check installation ```bash openscad --version || which openscad ``` If missing on macOS, install the **`openscad@snapshot`** cask, not the plain `openscad` cask. As of this writing Homebrew's `openscad` cask is pinned to the 2021.01 stable release, which is both flagged deprecated (fails macOS Gatekeeper, scheduled for removal) and too old to even parse current-generation libraries like gridfinity-rebuilt-openscad (they use newer OpenSCAD language syntax such as trailing commas in argument lists). `openscad@snapshot` tracks the actively-maintained nightly and is what you actually want: ```bash brew install --cask openscad@snapshot ``` This places the binary on PATH automatically (Homebrew casks link their `Binary` artifact into the prefix's `bin/` at install time) — confirm with `which openscad` rather than assuming a manual symlink step is needed; only add one by hand (`ln -sf /Applications/OpenSCAD.app/Contents/MacOS/OpenSCAD "$(brew --prefix)/bin/openscad"`) if `which openscad` comes up empty after install. ```bash # Debian/Ubuntu sudo apt-get update && sudo apt-get install -y openscad ``` On headless Linux (containers/servers, no atta