curl -X POST "https://api.chatgrid.ai/v1/boards/a1b2c3d4-e5f6-7890-abcd-ef1234567890/assets" \
  -H "Authorization: Bearer cgk_live_a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6" \
  -F "file=@/path/to/report.pdf"

const formData = new FormData();
formData.append("file", fs.createReadStream("/path/to/report.pdf"));

const response = await fetch(
  "https://api.chatgrid.ai/v1/boards/a1b2c3d4-e5f6-7890-abcd-ef1234567890/assets",
  {
    method: "POST",
    headers: { Authorization: "Bearer cgk_live_a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6" },
    body: formData,
  }
);

{
  "object": "asset",
  "data": {
    "id": "1711843260000-report.pdf",
    "url": "https://storage.chatgrid.ai/board-files/usr_123/brd_456/1711843260000-report.pdf",
    "filename": "1711843260000-report.pdf",
    "original_filename": "report.pdf",
    "storage_path": "usr_123/brd_456/1711843260000-report.pdf",
    "size": 245760,
    "content_type": "application/pdf"
  }
}

{
  "object": "error",
  "status": 400,
  "code": "validation_error",
  "message": "File exceeds maximum size of 50 MB"
}