创建短链接 POST /api/create

Headers: Content-Type: application/json

{
  "url": "https://example.com",
  "custom_code": "abcde",
  "enable_intermediate": true,
  "expiration": "2025-12-31"
}

Response:

{
  "success": true,
  "short_url": "https://zuz.asia/abcde"
}

注: 速率限制120次/分钟，无API密钥（开源）。