{"name":"Gangnest API","endpoints":{"POST /api/gang":"Nest designs (multipart files+items, or JSON designs)","POST /api/gang/preview":"Same multipart input → image/png"},"exampleCurl":"curl -X POST http://127.0.0.1:43188/api/gang \\\n  -F 'files=@logo-a.png' -F 'files=@logo-b.png' \\\n  -F 'items=[{\"file\":\"logo-a.png\",\"qty\":20,\"widthMm\":80},{\"file\":\"logo-b.png\",\"qty\":8,\"widthMm\":120}]' \\\n  -F sheetWidthMm=560 -F maxSheetLengthMm=1000 -F gapMm=2 -F allowRotation=true"}