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/RoomHero.vue

@@ -2,7 +2,7 @@
   <view class="room-hero">
     <view v-if="showVrPanel" class="hero-vr-panel" @click="openVR">
       <image v-if="vrPoster" :src="vrPoster" mode="aspectFill" class="hero-image"></image>
-      <view v-else class="hero-empty tn-flex tn-flex-col-center tn-flex-row-center">{{ t('noImage') }}</view>
+      <view v-else class="hero-empty tn-flex tn-flex-col-center tn-flex-row-center">{{ $tr('暂无图片') }}</view>
       <view class="hero-vr-glow"></view>
       <view class="vr-center-entry">
         <view class="vr-center-ring vr-center-ring--outer"></view>
@@ -11,8 +11,8 @@
           <text class="tn-icon-vr vr-center-core-icon"></text>
         </view>
         <view class="vr-center-text">
-          <view class="vr-center-title">{{ t('vrPreview') }}</view>
-          <view class="vr-center-desc">{{ t('vrPreviewDesc') }}</view>
+          <view class="vr-center-title">{{ $tr('VR预览') }}</view>
+          <view class="vr-center-desc">{{ $tr('切换到沉浸式看房模式。') }}</view>
         </view>
       </view>
     </view>
@@ -30,7 +30,7 @@
       </swiper-item>
     </swiper>
     <view v-else class="hero-empty tn-flex tn-flex-col-center tn-flex-row-center">
-      {{ t('noImage') }}
+      {{ $tr('暂无图片') }}
     </view>
 
     <view class="hero-mask"></view>
@@ -46,7 +46,7 @@
         @click="switchMedia('image')"
       >
         <text class="tn-icon-image media-tab-icon"></text>
-        <text>{{ t('imageTab') }}</text>
+        <text>{{ $tr('图片') }}</text>
       </view>
       <view
         class="media-tab"
@@ -54,7 +54,7 @@
         @click="switchMedia('vr')"
       >
         <text class="tn-icon-vr media-tab-icon"></text>
-      <text>{{ t('vrPreview') }}</text>
+      <text>{{ $tr('VR预览') }}</text>
       </view>
     </view>
 
@@ -65,7 +65,7 @@
 
     <!-- 引导下滑箭头 -->
     <view class="scroll-down-hint tn-flex tn-flex-direction-column tn-flex-col-center">
-      <text class="hint-text">{{ t('swipeUpHint') }}</text>
+      <text class="hint-text">{{ $tr('上滑查看详情') }}</text>
       <text class="tn-icon-up arrow-icon"></text>
     </view>
   </view>
@@ -113,9 +113,6 @@ export default {
     }
   },
   methods: {
-    t(key) {
-      return this.$tm('pkgExplore.room_detail.room_detail', key)
-    },
     onSwiperChange(e) {
       this.currentImageIndex = e.detail.current;
       this.$emit('swiper-change', e);