curl --request POST \
  --url https://zeus.agentspro.cn/api/auth/refresh \
  --header 'Content-Type: application/json' \
  --data '{
    "refreshToken": "dGhpcyBpcyBhIHJlZnJlc2ggdG9rZW4..."
  }'

{
  "accessToken": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9...",
  "expiresIn": 3600
}

{
  "error": "Invalid or expired refresh token"
}