Parse a binary STL whose 2-byte triangle attribute stores Material ID, isolate the largest connected component, compute its enclosed volume, map material ID to density from a markdown table, and write a JSON mass report.
$npx -y skills add etayang10th/spark-skills --skill 3d-scan-calcInstalls into the current project.
Run `npx skills use "https://github.com/etayang10th/spark-skills" --skill "etayang10th/spark-skills/3d-scan-calc"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/etayang10th/spark-skills" that are relevant to the current task. Run `npx skills add "https://github.com/etayang10th/spark-skills"` and select the relevant skills, then follow their instructions.