fix(frontend): complete i18n coverage and responsive layouts

frontend/src/features/wallet/components/WalletOpsDrawer.vue

@@ -509,6 +509,7 @@
 </template>
 
 <script setup lang="ts">
+import { getI18nLocale } from '@/i18n'
 import { computed, ref, watch } from 'vue'
 import {
   Badge,
@@ -1027,7 +1028,7 @@ async function submitCompleteRefund() {
 
 function formatDateTime(value: string | null | undefined) {
   if (!value) return '-'
-  return new Date(value).toLocaleString('zh-CN', {
+  return new Date(value).toLocaleString(getI18nLocale(), {
     year: 'numeric',
     month: '2-digit',
     day: '2-digit',