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

pkgExplore/room_detail/components/RoomSummary.vue

@@ -6,10 +6,10 @@
         <template v-if="hasPrice">
           <text class="price-symbol">¥</text>
           <text class="price-value">{{ detailData.priceValue }}</text>
-          <text class="price-unit">{{ t('priceUnit') }}</text>
+          <text class="price-unit">{{ $tr('/月') }}</text>
         </template>
         <template v-else>
-          <text class="price-empty">{{ t('pricePending') }}</text>
+          <text class="price-empty">{{ $tr('待定') }}</text>
         </template>
       </view>
       
@@ -40,7 +40,7 @@
           <view class="address-info">
             <view class="address-text tn-text-ellipsis">{{ shortAddress }}</view>
             <view class="address-sub tn-flex tn-flex-col-center">
-              <text class="address-sub-text">{{ t('addressHint') }}</text>
+              <text class="address-sub-text">{{ $tr('查看地图位置') }}</text>
               <text class="tn-icon-right address-sub-icon"></text>
             </view>
           </view>
@@ -48,7 +48,7 @@
         <view class="address-right">
           <view class="nav-btn tn-flex tn-flex-row-center tn-flex-col-center">
             <text class="tn-icon-navigation-fill"></text>
-            <text class="nav-text">{{ t('navigate') }}</text>
+            <text class="nav-text">{{ $tr('导航') }}</text>
           </view>
         </view>
       </view>
@@ -91,19 +91,16 @@ export default {
     shortAddress() {
       const addr = this.displayAddress;
       if (!addr) {
-        return this.t('noAddress')
+        return this.$tr('暂无地址')
       }
       if (this.language === 'en') {
         return addr
       }
       const short = addr.replace(/^(?:.*?省|.*?自治区)?(?:.*?市|.*?自治州)?/, '');
-      return short.trim() ? short : (addr || this.t('noAddress'));
+      return short.trim() ? short : (addr || this.$tr('暂无地址'));
     }
   },
   methods: {
-    t(key) {
-      return this.$tm('pkgExplore.room_detail.room_detail', key)
-    },
     handleAddressClick() {
       this.$emit('open-map', this.detailData)
     }