usage: voltry-mac [--no-root] [--yes] [--output DIR] [--json] [--no-open]
                  [--show-serial] [--paper letter|a4] [--debug]
       voltry-mac --dry-run           print every command it can run; run none
       voltry-mac render REPORT.json  rebuild the PDF from a saved JSON
       voltry-mac --version
