curl --request POST \
  --url http://localhost:8080/v1/files \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file' \
  --form purpose=batch \
  --form provider=openai

{
  "id": "<string>",
  "object": "<string>",
  "bytes": 123,
  "created_at": 123,
  "filename": "<string>",
  "purpose": "batch",
  "status": "uploaded",
  "status_details": "<string>",
  "expires_at": 123,
  "storage_backend": "<string>",
  "storage_uri": "<string>",
  "extra_fields": {
    "request_type": "<string>",
    "provider": "openai",
    "model_requested": "<string>",
    "model_deployment": "<string>",
    "latency": 123,
    "chunk_index": 123,
    "raw_request": {},
    "raw_response": {},
    "cache_debug": {
      "cache_hit": true,
      "cache_id": "<string>",
      "hit_type": "<string>",
      "provider_used": "<string>",
      "model_used": "<string>",
      "input_tokens": 123,
      "threshold": 123,
      "similarity": 123
    }
  }
}