/** 从地址栏 ?ip= 读取设备 IP（hash 路由下 query 仍在 search 上） */
export function getDeviceIpFromUrl(): string | null {
  if (typeof window === "undefined") return null;
  const ip = new URLSearchParams(window.location.search).get("ip");
  const trimmed = ip?.trim();
  return trimmed || null;
}

export function resolveInitialDeviceIp(): string {
  return getDeviceIpFromUrl() ?? localStorage.getItem("luxsin_ip") ?? "192.168.2.30";
}