curl 'https://app.memorylake.cn/openapi/admin/api/v1/invitations?status=pending' \
  -H 'Authorization: Bearer sk-admin-xxxxxx'

{
  "success": true,
  "message": "Operation completed successfully",
  "data": {
    "items": [
      {
        "id": "88",
        "email": "bob@example.com",
        "role": "tenant_member",
        "status": "pending",
        "created_at": 1756300000,
        "expires_at": 1756904800,
        "last_invited_at": 1756300000
      }
    ],
    "total": 1
  }
}