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

pkgService/my_contract/my_contract.vue

@@ -1,15 +1,15 @@
 <template>
   <view class="my-contract-page tn-safe-area-inset-bottom">
     <tn-nav-bar :isBack="true" :bottomShadow="false" backgroundColor="transparent">
-      <view class="tn-text-bold tn-text-xl tn-color-black">{{ t('navTitle') }}</view>
+      <view class="tn-text-bold tn-text-xl tn-color-black">{{ $tr('我的合同') }}</view>
     </tn-nav-bar>
 
     <view class="page-main" :style="{ paddingTop: vuex_custom_bar_height + 'px' }">
       <view class="overview-panel">
         <view class="overview-header">
           <view>
-            <view class="overview-title">{{ t('overviewTitle') }}</view>
-            <view class="overview-subtitle">{{ t('overviewSubtitle') }}</view>
+            <view class="overview-title">{{ $tr('合同概览') }}</view>
+            <view class="overview-subtitle">{{ $tr('查看住宿合同、签约状态与有效期限') }}</view>
           </view>
           <view class="overview-badge">
             <text class="tn-icon-edit-form"></text>
@@ -18,11 +18,11 @@
         </view>
         <view class="overview-metrics">
           <view class="metric-item">
-            <view class="metric-label">{{ t('pendingMetricLabel') }}</view>
+            <view class="metric-label">{{ $tr('待签约/审批') }}</view>
             <view class="metric-value">{{ summaryStats.pending }}</view>
           </view>
           <view class="metric-item is-primary">
-            <view class="metric-label">{{ t('displayMetricLabel') }}</view>
+            <view class="metric-label">{{ $tr('当前展示') }}</view>
             <view class="metric-value">{{ displayList.length }}</view>
           </view>
         </view>
@@ -41,8 +41,8 @@
       </view>
 
       <view v-if="loading" class="empty-panel">
-        <view class="empty-title">{{ t('loadingTitle') }}</view>
-        <view class="empty-desc">{{ t('loadingDesc') }}</view>
+        <view class="empty-title">{{ $tr('合同记录加载中') }}</view>
+        <view class="empty-desc">{{ $tr('正在同步您的合同数据，请稍候。') }}</view>
       </view>
 
       <view v-else-if="displayList.length" class="list-wrapper">
@@ -58,7 +58,7 @@
                 <text class="tn-icon-edit-write-fill"></text>
               </view>
               <view class="card-title-group">
-                <view class="card-title">{{ t('contractTitle') }}</view>
+                <view class="card-title">{{ $tr('住宿合同') }}</view>
                 <view class="card-code">{{ item.no || item.contractNo || '--' }}</view>
               </view>
             </view>
@@ -70,26 +70,26 @@
 
           <view class="meta-strip">
             <view class="meta-chip">
-              <view class="meta-chip-label">{{ t('relatedOrderLabel') }}</view>
+              <view class="meta-chip-label">{{ $tr('关联订单') }}</view>
               <view class="meta-chip-value">{{ item.orderNo || '--' }}</view>
             </view>
             <view class="meta-chip">
-              <view class="meta-chip-label">{{ t('signStatusLabel') }}</view>
-              <view class="meta-chip-value">{{ item.signImageUrl ? t('signed') : t('unsigned') }}</view>
+              <view class="meta-chip-label">{{ $tr('签署状态') }}</view>
+              <view class="meta-chip-value">{{ item.signImageUrl ? $tr('已签名') : $tr('待签名') }}</view>
             </view>
           </view>
 
           <view class="detail-panel">
             <view class="info-row">
-              <text class="info-label">{{ t('contractPeriodLabel') }}</text>
+              <text class="info-label">{{ $tr('合同期限') }}</text>
               <text class="info-value">{{ formatDateRange(item.start, item.end) }}</text>
             </view>
             <view class="info-row">
-              <text class="info-label">{{ t('recordTipLabel') }}</text>
+              <text class="info-label">{{ $tr('记录说明') }}</text>
               <text class="info-value">{{ getStatusTip(item) }}</text>
             </view>
             <view v-if="item.signImageUrl" class="sign-row">
-              <text class="info-label">{{ t('mySignatureLabel') }}</text>
+              <text class="info-label">{{ $tr('我的签名') }}</text>
               <view class="sign-preview">
                 <image :src="item.signImageUrl" mode="aspectFit"></image>
               </view>
@@ -112,8 +112,8 @@
         <view class="empty-icon">
           <text class="tn-icon-folder"></text>
         </view>
-        <view class="empty-title">{{ t('emptyTitle') }}</view>
-        <view class="empty-desc">{{ t('emptyDesc') }}</view>
+        <view class="empty-title">{{ $tr('暂无对应的合同记录') }}</view>
+        <view class="empty-desc">{{ $tr('切换筛选条件，或等待系统生成新的合同数据。') }}</view>
       </view>
     </view>
   </view>
@@ -133,74 +133,6 @@ function normalizeContract(item = {}) {
 }
 
 export default {
-  i18n: {
-    zh: {
-      navTitle: '我的合同',
-      overviewTitle: '合同概览',
-      overviewSubtitle: '查看住宿合同、签约状态与有效期限',
-      pendingMetricLabel: '待签约/审批',
-      displayMetricLabel: '当前展示',
-      loadingTitle: '合同记录加载中',
-      loadingDesc: '正在同步您的合同数据，请稍候。',
-      contractTitle: '住宿合同',
-      relatedOrderLabel: '关联订单',
-      signStatusLabel: '签署状态',
-      signed: '已签名',
-      unsigned: '待签名',
-      contractPeriodLabel: '合同期限',
-      recordTipLabel: '记录说明',
-      mySignatureLabel: '我的签名',
-      emptyTitle: '暂无对应的合同记录',
-      emptyDesc: '切换筛选条件，或等待系统生成新的合同数据。',
-      tabAll: '全部',
-      tabPending: '待签约',
-      statusRejected: '已拒绝',
-      statusPending: '待审批',
-      statusApproved: '已通过',
-      statusProcessing: '处理中',
-      dateRangeJoiner: ' 至 ',
-      tipApproved: '合同已生效，可查看签约结果。',
-      tipNeedSign: '待您完成签名后进入审批流程。',
-      tipPending: '已提交签约信息，等待审批结果。',
-      tipRejected: '合同未通过审批，请联系管理员处理。',
-      tipDefault: '请关注合同最新状态。',
-      actionSign: '去签约',
-      actionViewDetail: '查看详情'
-    },
-    en: {
-      navTitle: 'My Contracts',
-      overviewTitle: 'Contract Overview',
-      overviewSubtitle: 'Check stay contracts, signing status, and effective period',
-      pendingMetricLabel: 'Pending Sign / Review',
-      displayMetricLabel: 'Displayed',
-      loadingTitle: 'Loading contracts',
-      loadingDesc: 'Syncing your contract data. Please wait.',
-      contractTitle: 'Stay Contract',
-      relatedOrderLabel: 'Related Order',
-      signStatusLabel: 'Signing Status',
-      signed: 'Signed',
-      unsigned: 'Unsigned',
-      contractPeriodLabel: 'Contract Period',
-      recordTipLabel: 'Notes',
-      mySignatureLabel: 'My Signature',
-      emptyTitle: 'No contract record found',
-      emptyDesc: 'Switch filters or wait for new contract data to be generated.',
-      tabAll: 'All',
-      tabPending: 'Pending Sign',
-      statusRejected: 'Rejected',
-      statusPending: 'Pending Review',
-      statusApproved: 'Approved',
-      statusProcessing: 'Processing',
-      dateRangeJoiner: ' to ',
-      tipApproved: 'The contract is effective now. You can view the signing result.',
-      tipNeedSign: 'Please complete your signature to enter the review process.',
-      tipPending: 'Signing information has been submitted and is waiting for review.',
-      tipRejected: 'The contract did not pass review. Please contact the administrator.',
-      tipDefault: 'Please pay attention to the latest contract status.',
-      actionSign: 'Sign Now',
-      actionViewDetail: 'View Detail'
-    }
-  },
   data() {
     return {
       currentTab: 'all',
@@ -241,13 +173,10 @@ export default {
     }
   },
   methods: {
-    t(key, params) {
-      return this.$tm('pkgService.my_contract.my_contract', key, params)
-    },
     syncTabs() {
       this.tabs = [
-        { label: this.t('tabAll'), value: 'all' },
-        { label: this.t('tabPending'), value: 'pending' }
+        { label: this.$tr('全部'), value: 'all' },
+        { label: this.$tr('待签约'), value: 'pending' }
       ]
     },
     getStoreUser() {
@@ -316,11 +245,11 @@ export default {
     },
     getStatusText(status) {
       const map = {
-        '-1': this.t('statusRejected'),
-        '0': this.t('statusPending'),
-        '1': this.t('statusApproved')
+        '-1': this.$tr('已拒绝'),
+        '0': this.$tr('待审批'),
+        '1': this.$tr('已通过')
       }
-      return map[String(status)] || this.t('statusProcessing')
+      return map[String(status)] || this.$tr('处理中')
     },
     getDisplayStatusText(item = {}) {
       if (this.language !== 'en' && item.approvalStatusDesc) {
@@ -340,28 +269,28 @@ export default {
       if (!start && !end) {
         return '--'
       }
-      return `${this.formatDate(start)}${this.t('dateRangeJoiner')}${this.formatDate(end)}`
+      return `${this.formatDate(start)}${this.$tr(' 至 ')}${this.formatDate(end)}`
     },
     getStatusTip(item = {}) {
       if (Number(item.approvalStatus) === 1) {
-        return this.t('tipApproved')
+        return this.$tr('合同已生效，可查看签约结果。')
       }
       if (Number(item.approvalStatus) === 0 && !item.signImageUrl) {
-        return this.t('tipNeedSign')
+        return this.$tr('待您完成签名后进入审批流程。')
       }
       if (Number(item.approvalStatus) === 0) {
-        return this.t('tipPending')
+        return this.$tr('已提交签约信息，等待审批结果。')
       }
       if (Number(item.approvalStatus) === -1) {
-        return this.t('tipRejected')
+        return this.$tr('合同未通过审批，请联系管理员处理。')
       }
-      return this.t('tipDefault')
+      return this.$tr('请关注合同最新状态。')
     },
     resolveActionText(item = {}) {
       if (this.shouldShowSignAction(item)) {
-        return this.t('actionSign')
+        return this.$tr('去签约')
       }
-      return this.t('actionViewDetail')
+      return this.$tr('查看详情')
     },
     shouldShowSignAction(item = {}) {
       return Number(item.approvalStatus) === 0 && !item.signImageUrl