{
  "_说明": "设备端Agent配置文件 — 复制为 config.json 后修改",
  "_优先级": "环境变量 > 命令行参数 > config.json > 默认值",

  "device_id": "",
  "server_url": "ws://192.168.1.100:8899/ws/device",
  "heartbeat_interval": 10,
  "project_id": "cunkebao",

  "_device_id说明": "留空则自动检测（getprop ro.serialno / ANDROID_SERIAL / 时间戳）",
  "_server_url说明": "SDK服务器WebSocket基础地址，程序自动拼接 /<device_id>",
  "_heartbeat说明": "心跳间隔(秒)，建议 5/10/30，服务端可动态下发覆盖",
  "_project_id说明": "项目ID，用于服务端分组管理"
}