refactor: 国际化文本迁移至全局 locales/messages.js

将组件级 i18n 对象重构为统一由全局 locales/messages.js 管理，确保中英文语言切换时正确显示对应文本。

- 新增 utils/i18n.js 国际化工具函数
- 更新 store/$t.mixin.js 翻译混入逻辑
- 迁移 pkgService、pkgBooking、pkgAccount、pkgExplore、pages 等共 58 个组件的中英文文本至全局消息表

pages/index/index.vue

@@ -6,7 +6,7 @@
       <view class="loading-logo">
         <text class="tn-icon-moon tn-color-white" style="font-size: 80rpx; transform: rotate(-45deg); display: block;"></text>
       </view>
-      <view class="loading-desc tn-margin-top-lg" style="color: rgba(255,255,255,0.8); letter-spacing: 4rpx; font-size: 32rpx; font-weight: bold;">{{ t('loadingBrand') }}</view>
+      <view class="loading-desc tn-margin-top-lg" style="color: rgba(255,255,255,0.8); letter-spacing: 4rpx; font-size: 32rpx; font-weight: bold;">{{ $tr('绿居公寓') }}</view>
       <view class="loading-spinner tn-margin-top-xl">
         <tn-loading mode="circle" color="#00BBE8" size="60"></tn-loading>
       </view>
@@ -15,21 +15,21 @@
     <!-- #ifdef MP-WEIXIN -->
     <view v-if="showPrivacyPopup" class="privacy-mask">
       <view class="privacy-dialog">
-        <view class="privacy-title">{{ t('privacyTitle') }}</view>
+        <view class="privacy-title">{{ $tr('隐私授权提示') }}</view>
         <view class="privacy-content">
-          {{ t('privacyContentPrefix') }}
-          <text class="privacy-link" @click="openPrivacyContract">{{ t('privacyContractName') }}</text>
-          {{ t('privacyContentSuffix') }}
+          {{ $tr('进入小程序前，请先阅读并同意') }}
+          <text class="privacy-link" @click="openPrivacyContract">{{ $tr('《用户隐私保护指引》') }}</text>
+          {{ $tr('，同意后才能继续使用相关功能。') }}
         </view>
         <view class="privacy-action-row">
-          <view class="privacy-action-btn" @click="handlePrivacyDisagree">{{ t('privacyDisagree') }}</view>
+          <view class="privacy-action-btn" @click="handlePrivacyDisagree">{{ $tr('暂不授权') }}</view>
           <button
             id="index-privacy-agree-btn"
             class="privacy-action-btn is-primary"
             open-type="agreePrivacyAuthorization"
             @agreeprivacyauthorization="handleAgreePrivacyAuthorization"
           >
-            {{ t('privacyAgree') }}
+            {{ $tr('同意并继续') }}
           </button>
         </view>
       </view>
@@ -156,50 +156,18 @@
           pendingContracts: []
         },
         tabDefinitions: [
-          { id: 'select-room', labelKey: 'tabSelectRoom', icon: 'tn-icon-home-fill', image: '/static/tabbar/tn-tabbar0.png', component: 'SelectRoomTab', ref: 'selectRoomTab', refreshMethod: 'checkLoginStatus' },
-          { id: 'stay-service', labelKey: 'tabStayService', icon: 'tn-icon-safe', image: '/static/tabbar/tn-tabbar1.png', component: 'StayServiceTab', ref: 'stayServiceTab', refreshMethod: 'checkLocalStatus' },
-          { id: 'my-application', labelKey: 'tabMyApplication', icon: 'tn-icon-order', image: '/static/tabbar/tn-tabbar2.png', component: 'MyApplicationTab', ref: 'myApplicationTab', refreshMethod: 'load' },
-          { id: 'message-center', labelKey: 'tabMessageCenter', icon: 'tn-icon-message', image: '/static/tabbar/tn-tabbar3.png', component: 'MessageCenterTab', ref: 'messageCenterTab', refreshMethod: 'load' },
-          { id: 'profile-center', labelKey: 'tabProfileCenter', icon: 'tn-icon-my-fill', image: '/static/tabbar/tn-tabbar3.png', component: 'ProfileCenterTab', ref: 'profileCenterTab', refreshMethod: 'checkLoginStatus' }
+          { id: 'select-room', labelKey: '选 房', icon: 'tn-icon-home-fill', image: '/static/tabbar/tn-tabbar0.png', component: 'SelectRoomTab', ref: 'selectRoomTab', refreshMethod: 'checkLoginStatus' },
+          { id: 'stay-service', labelKey: '入 住', icon: 'tn-icon-safe', image: '/static/tabbar/tn-tabbar1.png', component: 'StayServiceTab', ref: 'stayServiceTab', refreshMethod: 'checkLocalStatus' },
+          { id: 'my-application', labelKey: '申请单', icon: 'tn-icon-order', image: '/static/tabbar/tn-tabbar2.png', component: 'MyApplicationTab', ref: 'myApplicationTab', refreshMethod: 'load' },
+          { id: 'message-center', labelKey: '消 息', icon: 'tn-icon-message', image: '/static/tabbar/tn-tabbar3.png', component: 'MessageCenterTab', ref: 'messageCenterTab', refreshMethod: 'load' },
+          { id: 'profile-center', labelKey: '我 的', icon: 'tn-icon-my-fill', image: '/static/tabbar/tn-tabbar3.png', component: 'ProfileCenterTab', ref: 'profileCenterTab', refreshMethod: 'checkLoginStatus' }
         ],
         loadedPages: ['select-room'],
         isAppInitLoading: true,
         isTabSwitching: false,
         showPrivacyPopup: false,
         resolvePrivacyAuthorization: null,
-        isCheckingPrivacyAuthorization: false,
-        i18n: {
-          zh: {
-            loadingBrand: '绿居公寓',
-            shareTitle: '绿居公寓 - 国际化青年社区',
-            tabSelectRoom: '选 房',
-            tabStayService: '入 住',
-            tabMyApplication: '申请单',
-            tabMessageCenter: '消 息',
-            tabProfileCenter: '我 的',
-            privacyTitle: '隐私授权提示',
-            privacyContentPrefix: '进入小程序前，请先阅读并同意',
-            privacyContractName: '《用户隐私保护指引》',
-            privacyContentSuffix: '，同意后才能继续使用相关功能。',
-            privacyAgree: '同意并继续',
-            privacyDisagree: '暂不授权'
-          },
-          en: {
-            loadingBrand: 'Luju Apartments',
-            shareTitle: 'Luju Apartments - International Youth Community',
-            tabSelectRoom: 'Explore',
-            tabStayService: 'Stay',
-            tabMyApplication: 'Applications',
-            tabMessageCenter: 'Messages',
-            tabProfileCenter: 'Profile',
-            privacyTitle: 'Privacy Authorization',
-            privacyContentPrefix: 'Before entering the mini program, please read and agree to the ',
-            privacyContractName: 'Privacy Protection Guide',
-            privacyContentSuffix: ' to continue using related features.',
-            privacyAgree: 'Agree and Continue',
-            privacyDisagree: 'Not Now'
-          }
-        }
+        isCheckingPrivacyAuthorization: false
       }
     },
     computed: {
@@ -231,7 +199,7 @@
           .filter(item => this.visibleTabIds.includes(item.id))
           .map(item => ({
             ...item,
-            name: this.t(item.labelKey)
+            name: this.$tr(item.labelKey)
           }))
       },
       currentTabbarIndex() {
@@ -262,9 +230,6 @@
       })
     },
     methods: {
-      t(key) {
-      return this.$tm('pages.index.index', key)
-    },
       initPrivacyAuthorization() {
         // #ifdef MP-WEIXIN
         if (typeof wx === 'undefined' || !wx.onNeedPrivacyAuthorization) {
@@ -782,14 +747,14 @@
     // 分享到朋友
     onShareAppMessage() {
       return {
-        title: this.t('shareTitle'),
+        title: this.$tr('绿居公寓 - 国际化青年社区'),
         path: '/pages/index/index'
       }
     },
     // 分享到朋友圈
     onShareTimeline() {
       return {
-        title: this.t('shareTitle')
+        title: this.$tr('绿居公寓 - 国际化青年社区')
       }
     }
   }