{"status":"running","message":"IP更新接口（密码保护 + 真实客户端IP模式）","port":3009,"environment":"development","requiredPassword":"是（从.env文件加载）","allowedApis":{"updateIp":"POST http://localhost:3009/api/receive-ip（需密码，可传递privateIp参数上报局域网IP）","viewLatestIp":"GET http://localhost:3009/api/ip（无需密码，查看最新IP记录）"},"passwordSubmitMethods":{"header":"推荐：X-API-Password: [你的密码]","query":"不推荐：POST http://localhost:3009/api/receive-ip?password=[你的密码]","body":"POST http://localhost:3009/api/receive-ip（请求体：{ \"password\": \"[你的密码]\", \"privateIp\": \"[你的局域网IP]\" }）"},"note":"1. 客户端可传递privateIp参数上报局域网IP，否则仅存储公网IP 2. ip字段为公网IP，privateIp字段为局域网IP 3. 生产环境建议用HTTPS+限制CORS域名","charset":"UTF-8"}