curl --request POST \
  --url https://rippletide-backend.azurewebsites.net/api/agents/{id}/upload-pdf \
  --header 'Content-Type: multipart/form-data' \
  --header 'x-api-key: <api-key>' \
  --form file='@example-file'

{
  "success": true,
  "message": "<string>",
  "knowledge": {
    "qaPairsStored": 123,
    "usedDefaultFallback": true
  }
}