curl --request POST \
  --url https://files-api.evolink.ai/api/v1/files/upload/url \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "file_url": "https://example.com/image.jpg"
}'

{
  "success": true,
  "code": 200,
  "msg": "文件上传成功",
  "data": {
    "file_id": "file_abc123",
    "file_name": "downloaded.jpg",
    "original_name": "downloaded.jpg",
    "file_size": 2048,
    "mime_type": "image/jpeg",
    "upload_path": "downloads",
    "file_url": "https://files.evolink.ai/downloads/downloaded.jpg",
    "download_url": "https://files.evolink.ai/api/v1/files/download/file_abc123",
    "upload_time": "2025-10-09T00:00:00+08:00",
    "expires_at": "2025-10-12T00:00:00+08:00"
  }
}