Refactor build and start scripts in package.json; add plugin to exclude debug files from production build in vite.config.ts; remove ConnectScreen component and replace with ConnectionPlaceholder in multiple pages; update DeviceContext to auto-connect using device IP from URL; enhance locale files with new device IP labels.

client/src/lib/deviceIp.ts

@@ -0,0 +1,11 @@
+/** 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";
+}