Refactor BottomNav to use localized labels for navigation items; added support for dynamic language selection based on device state. Updated locale files for English, Traditional Chinese, and Simplified Chinese to include bottom navigation labels.

client/src/locales/data-zh-HK.json

@@ -1,6 +1,7 @@
 {
   "home": {
     "audioSet": "音訊設定",
+    "systemSet": "系統設定",
     "power": "電源",
     "input": "輸入源",
     "output": "輸出端口",
@@ -12,6 +13,16 @@
     "powerOffToastDemo": "演示模式：已中斷與裝置的連線",
     "powerOffToastSent": "已傳送關機指令"
   },
+  "vuPage": {
+    "title": "VU 表庫"
+  },
+  "bottomNav": {
+    "community": "社區",
+    "hpEq": "HP-EQ",
+    "home": "主頁",
+    "effects": "Effect",
+    "myAi": "我的AI"
+  },
   "source": {
     "label": "輸入/輸出",
     "input": { "coaxial": "同軸", "optical": "光纖", "bluetooth": "藍牙", "rca": "類比RCA" },
@@ -137,7 +148,57 @@
     "gain": "GAIN",
     "q": "Q值",
     "loadDeviceBtn": "確認載入",
-    "peqNoneItem": "尚未設定"
+    "peqNoneItem": "尚未設定",
+    "eqUi": {
+      "batchEditTitle": "批次編輯",
+      "batchEditHint": "共 11 行：第 1 行為 Preamp，第 2–11 行為 Filter 1–10。儲存後將覆寫目前耳機的參數。",
+      "cancel": "取消",
+      "save": "儲存",
+      "tabBrands": "品牌",
+      "tabModels": "型號",
+      "tabTarget": "目標",
+      "searchPlaceholder": "搜尋品牌或型號",
+      "searching": "搜尋中…",
+      "noSearchResults": "找不到相關品牌或型號",
+      "loading": "載入中…",
+      "noBrandMatch": "沒有符合的品牌",
+      "selectBrandFirst": "請先在「品牌」頁選擇品牌",
+      "brandLabel": "品牌：",
+      "modelFromSearchLabel": "已選搜尋型號：",
+      "noModelsForBrand": "此品牌暫無型號",
+      "targetBrand": "品牌：",
+      "targetModel": "型號：",
+      "targetForm": "Form：",
+      "formAll": "全部",
+      "confirmLoading": "處理中…",
+      "confirmButton": "確認",
+      "selectModelFirst": "請先選擇型號",
+      "noTargets": "暫無可用目標曲線",
+      "closeDrawer": "關閉",
+      "toastBatchApplied": "批次編輯已套用",
+      "toastBatchParseError": "批次編輯格式錯誤",
+      "toastBrandsFail": "取得品牌列表失敗",
+      "toastModelsFail": "取得型號列表失敗",
+      "toastCurveFail": "取得曲線失敗",
+      "toastNewEqOk": "新耳機 EQ 已上報",
+      "toastTargetSelected": "已選目標：{{name}}",
+      "deleteConfirm": "是否刪除耳機「{{name}}」？",
+      "toastDeleted": "已刪除耳機",
+      "toastDeleteFail": "刪除耳機失敗",
+      "bassBoost": "低頻增強：fc {{fc}}，q {{q}}，gain {{gain}}dB",
+      "errMinLines": "至少需要 11 行（Preamp + 10 個濾波器）",
+      "errPreampFirstLine": "第 1 行應為 Preamp:-5.96dB 格式",
+      "errPreampValue": "Preamp 數值無效",
+      "errFilterLine": "第 {{line}} 行不符合 Filter 格式",
+      "errFilterNoRange": "Filter 編號 {{no}} 超出範圍",
+      "errFilterType": "Filter {{no}} 的類型無效（{{type}}）",
+      "errFilterNumbers": "Filter {{no}} 的數值無效",
+      "errFilterAll": "Filter 1–10 必須全部提供",
+      "chartCopyTo": "複製到 {{mode}}",
+      "chartLoadToDevice": "載入至裝置",
+      "toastChartCopied": "已複製到 {{mode}}",
+      "toastChartLoadedDevice": "已載入至裝置"
+    }
   },
   "dac": {
     "balance": "左右平衡",