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.json

@@ -1,6 +1,7 @@
 {
   "home": {
     "audioSet": "音频设置",
+    "systemSet": "系统设置",
     "power": "电源",
     "input": "输入源",
     "output": "输出端口",
@@ -12,6 +13,16 @@
     "powerOffToastDemo": "演示模式：已断开与设备的连接",
     "powerOffToastSent": "已发送关机指令"
   },
+  "vuPage": {
+    "title": "VU 表库"
+  },
+  "bottomNav": {
+    "community": "社区",
+    "hpEq": "HP-EQ",
+    "home": "主页",
+    "effects": "Effect",
+    "myAi": "我的AI"
+  },
   "source": {
     "label": "输入输出",
     "input": { "coaxial": "同轴", "optical": "光钎", "bluetooth": "蓝牙", "rca": "模拟RCA" },
@@ -137,7 +148,57 @@
     "gain": "GAIN",
     "q": "Q值",
     "loadDeviceBtn": "确定载入",
-    "peqNoneItem": "未配置"
+    "peqNoneItem": "未配置",
+    "eqUi": {
+      "batchEditTitle": "批量编辑",
+      "batchEditHint": "共 11 行：第 1 行为 Preamp，第 2–11 行为 Filter 1–10。保存后将覆盖当前耳机的参数。",
+      "cancel": "取消",
+      "save": "保存",
+      "tabBrands": "品牌",
+      "tabModels": "型号",
+      "tabTarget": "目标",
+      "searchPlaceholder": "搜索品牌或型号",
+      "searching": "搜索中…",
+      "noSearchResults": "未找到相关品牌或型号",
+      "loading": "加载中…",
+      "noBrandMatch": "无匹配品牌",
+      "selectBrandFirst": "请先在「品牌」页选择品牌",
+      "brandLabel": "品牌：",
+      "modelFromSearchLabel": "已选搜索型号：",
+      "noModelsForBrand": "该品牌暂无型号",
+      "targetBrand": "品牌：",
+      "targetModel": "型号：",
+      "targetForm": "Form：",
+      "formAll": "全部",
+      "confirmLoading": "处理中…",
+      "confirmButton": "确认",
+      "selectModelFirst": "请先选择型号",
+      "noTargets": "暂无可用目标曲线",
+      "closeDrawer": "关闭",
+      "toastBatchApplied": "批量编辑已应用",
+      "toastBatchParseError": "批量编辑格式错误",
+      "toastBrandsFail": "获取品牌列表失败",
+      "toastModelsFail": "获取型号列表失败",
+      "toastCurveFail": "获取曲线失败",
+      "toastNewEqOk": "新耳机 EQ 已上报",
+      "toastTargetSelected": "已选目标：{{name}}",
+      "deleteConfirm": "是否删除耳机「{{name}}」？",
+      "toastDeleted": "已删除耳机",
+      "toastDeleteFail": "删除耳机失败",
+      "bassBoost": "低频增强：fc {{fc}}，q {{q}}，gain {{gain}}dB",
+      "errMinLines": "至少需要 11 行（Preamp + 10 个滤波器）",
+      "errPreampFirstLine": "第 1 行应为 Preamp:-5.96dB 格式",
+      "errPreampValue": "Preamp 数值无效",
+      "errFilterLine": "第 {{line}} 行不符合 Filter 格式",
+      "errFilterNoRange": "Filter 编号 {{no}} 超出范围",
+      "errFilterType": "Filter {{no}} 的类型无效（{{type}}）",
+      "errFilterNumbers": "Filter {{no}} 的数值无效",
+      "errFilterAll": "Filter 1–10 必须全部提供",
+      "chartCopyTo": "复制到 {{mode}}",
+      "chartLoadToDevice": "加载至设备",
+      "toastChartCopied": "已复制到 {{mode}}",
+      "toastChartLoadedDevice": "已加载至设备"
+    }
   },
   "dac": {
     "balance": "左右平衡",