chore(i18n): auto-update translations via LLM

frontend/translations/zh.json

@@ -607,10 +607,12 @@
   "language.lv": "拉脱维亚语",
   "language.nb": "挪威语",
   "language.nl": "荷兰语",
+  "language.no_results": "没有找到语言",
   "language.pl": "波兰语",
   "language.pt": "葡萄牙语",
   "language.ro": "罗马尼亚语",
   "language.ru": "俄语",
+  "language.search_placeholder": "搜索语言\u0013",
   "language.selector": "语言",
   "language.selector_label": "选择语言",
   "language.sk": "斯洛伐克语",