Инжектор sparklines XLSX

# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/xlsx-sparkline-injector' \
  -H 'Content-Type: application/json' \
  -d '{"filename":"workbookFile.ext","contentType":"application/octet-stream","size":12345}'

# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
  --data-binary @/path/to/file.ext

# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/ru/api/tools/xlsx-sparkline-injector' \
  -F 'workbookFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
  -F 'sparklinesJson=[
  {
    "sheetName": "Tools API",
    "sparklineType": "line",
    "dataSheetName": "Tools API",
    "dataRange": "B2:G2",
    "locationRange": "H2",
    "seriesColor": "#2563EB",
    "markers": true
  }
]'