feat(i18n): 改造10个组件为i18n国际化，同步更新9种语言翻译文件

- 组件改造：EmptyState、ExportPanel、SearchConditionItem、SearchHistoryPanel、
  SearchResultCard、SearchResultList、Select、SortSwitcher、TemplatePanel、
  BottomNavigation、SearchConditionPanel
- 替换硬编码中文为 $t() 调用和 computed 响应式翻译
- 新增翻译键：search（搜索历史/模板/条件）、export（导出选项）、
  common.pleaseSelect 等
- 同步更新 zh-CN、en、zh-TW、ja、ko、es、fr、de、pt 共9种语言文件
- 重构 errorHandler：从 API 错误处理改为本地应用错误处理
- 移除 search.ts 中未使用的 SearchService 接口

everything-is-suitable-uniapp/src/components/SearchHistoryPanel/index.vue

@@ -1,17 +1,17 @@
 <template>
   <Card class="search-history-panel">
     <view class="panel-header">
-      <Typography variant="h4" weight="semibold">搜索历史</Typography>
+      <Typography variant="h4" weight="semibold">{{ $t('search.searchHistory') }}</Typography>
       <Button size="small" type="text" @click="handleClearHistory">
-        <Typography variant="caption" color="rgba(196, 30, 58, 255)">清除历史</Typography>
+        <Typography variant="caption" color="rgba(196, 30, 58, 255)">{{ $t('search.clearHistory') }}</Typography>
       </Button>
     </view>
 
     <view v-if="history.length === 0" class="empty-history">
       <EmptyState
         icon="empty"
-        title="暂无搜索历史"
-        description="执行搜索后，搜索条件将显示在这里"
+        :title="$t('search.noHistoryTitle')"
+        :description="$t('search.noHistoryDesc')"
         size="small"
       />
     </view>
@@ -39,6 +39,7 @@
 
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
+import { useI18n } from 'vue-i18n'
 import type { SearchRequest } from '../../types/search'
 import searchService from '../../services/searchService'
 import Card from '../Card/Card.vue'
@@ -53,6 +54,8 @@ interface HistoryItem {
   createdAt: string
 }
 
+const { t } = useI18n()
+
 const emit = defineEmits<{
   select: [condition: SearchRequest]
 }>()
@@ -73,8 +76,8 @@ function handleSelectHistory(item: HistoryItem) {
 
 function handleClearHistory() {
   uni.showModal({
-    title: '确认清除',
-    content: '确定要清除所有搜索历史吗？',
+    title: t('search.confirmClear'),
+    content: t('search.confirmClearContent'),
     success: (res) => {
       if (res.confirm) {
         searchService.clearSearchHistory()
@@ -88,11 +91,11 @@ function formatHistoryTitle(condition: SearchRequest): string {
   const conditionCount = condition.conditions.length
   const days = condition.days
   
-  let title = `${conditionCount}个条件，${days}天范围`
+  let title = t('search.historyConditionDays', { count: conditionCount, days })
   
   if (conditionCount > 0) {
     const firstCondition = condition.conditions[0]
-    const type = firstCondition.type === 'suitable' ? '宜' : '忌'
+    const type = firstCondition.type === 'suitable' ? t('search.suitable') : t('search.unsuitable')
     const items = firstCondition.items.slice(0, 2).join('、')
     
     title += `（${type}${items}${firstCondition.items.length > 2 ? '...' : ''}）`
@@ -108,13 +111,13 @@ function formatTime(timeStr: string): string {
   const diffHours = Math.floor(diffMs / (1000 * 60 * 60))
   
   if (diffHours < 1) {
-    return '刚刚'
+    return t('search.justNow')
   } else if (diffHours < 24) {
-    return `${diffHours}小时前`
+    return t('search.hoursAgo', { count: diffHours })
   } else {
     const diffDays = Math.floor(diffHours / 24)
     if (diffDays < 7) {
-      return `${diffDays}天前`
+      return t('search.daysAgo', { count: diffDays })
     } else {
       return date.toLocaleDateString()
     }