当设备未连接时，各页面默认显示英文语言的文本，并在标题追加 (Disconnect)

client/src/pages/AudioPage.tsx

@@ -19,9 +19,9 @@ import {
   parseFirmwareVersion,
   readBootSoundFromState,
 } from "@/lib/luxsinApi";
-import localeZh from "@/locales/data-zh.json";
-import localeZhHK from "@/locales/data-zh-HK.json";
 import localeEn from "@/locales/data-en.json";
+import { resolveLocalePack } from "@/locales/resolveLocale";
+import { usePageTitleWithConnection } from "@/hooks/usePageTitleWithConnection";
 
 function CyanSlider({ value, min, max, step = 1, onChange, onRelease }: {
   value: number;
@@ -123,12 +123,6 @@ type LocaleDac = {
   home?: { audioSet?: string };
 };
 
-const LOCALE_BY_LANG: Record<number, LocaleDac> = {
-  0: localeEn as LocaleDac,
-  1: localeZhHK as LocaleDac,
-  2: localeZh as LocaleDac,
-};
-
 function optionLabels(items: Array<{ index: number; label: string }> | undefined, fallback: string[]) {
   if (!items || items.length === 0) return fallback;
   const sorted = [...items].sort((a, b) => a.index - b.index);
@@ -182,8 +176,7 @@ export default function AudioPage() {
   const { deviceState, updateSetting, refresh, isConnected, api } = useDevice();
   const ds = deviceState;
   const vuSensor = (ds as ({ vuSensor?: number } | null))?.vuSensor;
-  const langIdx = ds?.language ?? 2;
-  const localeData = LOCALE_BY_LANG[langIdx] ?? (localeZh as LocaleDac);
+  const localeData = resolveLocalePack(ds?.language) as LocaleDac;
   const dacText = localeData.dac ?? {};
 
   // balance 从接口获取的是乘以 10 后的值，需要除以 10 显示（例如：-130 → -13.0）
@@ -241,6 +234,8 @@ export default function AudioPage() {
   const DAC_ARC_OPTIONS = optionLabels(dacText.dacArc?.options, ["ARC", "EARC"]);
   const XLR_OPTIONS = optionLabels(dacText.xlr?.options, ["正常", "反转"]);
 
+  const pageTitle = usePageTitleWithConnection(localeData.home?.audioSet ?? "Audio");
+
   const goSelect = (title: string, options: string[], selected: number, key: string) => {
     navigateToSelect(title, options, selected, "/audio", key);
     setLocation("/select");
@@ -253,7 +248,7 @@ export default function AudioPage() {
           <ChevronLeft size={24} />
         </button>
         <h1 className="flex-1 text-center text-[17px] font-semibold text-white">
-          {localeData.home?.audioSet ?? "音频设置"}
+          {pageTitle}
         </h1>
         <div className="w-8" />
       </div>