$ node packages/scripts/dist/commands/run-cli.js project attachment upload proj_bnm9ev6cas --client-file /tmp/reference.png --json

{
  "type": "localImage",
  "path": "reference-1787864544288-fhcnfi.png",
  "name": "reference.png",
  "mimeType": "image/png",
  "sizeBytes": 97
}