fix: unify chinese language code as zh-CN

src/i18n.tsx

@@ -6,7 +6,7 @@ import React, {
   useState,
 } from "react";
 
-export type Lang = "zh" | "en" | "ja" | "ko" | "vi" | "id" | "ms";
+export type Lang = "zh-CN" | "en" | "ja" | "ko" | "vi" | "id" | "ms";
 
 type Dict = Record<string, string>;
 
@@ -82,7 +82,7 @@ const zhDict: Dict = {
   walletMissingProjectId:
     "请配置 VITE_WALLETCONNECT_PROJECT_ID（Reown Cloud），否则无法使用 WalletConnect/扫码。",
   walletSetupNeeded: "钱包扫码未启用（请在服务器配置环境变量）",
-  lang_zh: "中文",
+  lang_zh_CN: "中文",
   lang_en: "English",
   lang_ja: "日本語",
   lang_ko: "한국어",
@@ -208,7 +208,7 @@ const enDict: Dict = {
   walletMissingProjectId:
     "Set VITE_WALLETCONNECT_PROJECT_ID (free on Reown Cloud). Required for WalletConnect / QR login.",
   walletSetupNeeded: "Wallet QR login disabled (set env on server)",
-  lang_zh: "Chinese",
+  lang_zh_CN: "Chinese",
   lang_en: "English",
   lang_ja: "Japanese",
   lang_ko: "Korean",
@@ -262,8 +262,8 @@ const enDict: Dict = {
 };
 
 const languageNames: Record<Lang, Dict> = {
-  zh: {
-    lang_zh: "中文",
+  "zh-CN": {
+    lang_zh_CN: "中文",
     lang_en: "English",
     lang_ja: "日本語",
     lang_ko: "한국어",
@@ -272,7 +272,7 @@ const languageNames: Record<Lang, Dict> = {
     lang_ms: "Bahasa Melayu",
   },
   en: {
-    lang_zh: "Chinese",
+    lang_zh_CN: "Chinese",
     lang_en: "English",
     lang_ja: "Japanese",
     lang_ko: "Korean",
@@ -281,7 +281,7 @@ const languageNames: Record<Lang, Dict> = {
     lang_ms: "Malay",
   },
   ja: {
-    lang_zh: "中国語",
+    lang_zh_CN: "中国語",
     lang_en: "英語",
     lang_ja: "日本語",
     lang_ko: "韓国語",
@@ -290,7 +290,7 @@ const languageNames: Record<Lang, Dict> = {
     lang_ms: "マレー語",
   },
   ko: {
-    lang_zh: "중국어",
+    lang_zh_CN: "중국어",
     lang_en: "영어",
     lang_ja: "일본어",
     lang_ko: "한국어",
@@ -299,7 +299,7 @@ const languageNames: Record<Lang, Dict> = {
     lang_ms: "말레이어",
   },
   vi: {
-    lang_zh: "Tiếng Trung",
+    lang_zh_CN: "Tiếng Trung",
     lang_en: "Tiếng Anh",
     lang_ja: "Tiếng Nhật",
     lang_ko: "Tiếng Hàn",
@@ -308,7 +308,7 @@ const languageNames: Record<Lang, Dict> = {
     lang_ms: "Tiếng Mã Lai",
   },
   id: {
-    lang_zh: "Bahasa Tionghoa",
+    lang_zh_CN: "Bahasa Tionghoa",
     lang_en: "Bahasa Inggris",
     lang_ja: "Bahasa Jepang",
     lang_ko: "Bahasa Korea",
@@ -317,7 +317,7 @@ const languageNames: Record<Lang, Dict> = {
     lang_ms: "Bahasa Melayu",
   },
   ms: {
-    lang_zh: "Bahasa Cina",
+    lang_zh_CN: "Bahasa Cina",
     lang_en: "Bahasa Inggeris",
     lang_ja: "Bahasa Jepun",
     lang_ko: "Bahasa Korea",
@@ -328,7 +328,7 @@ const languageNames: Record<Lang, Dict> = {
 };
 
 const dict: Record<Lang, Dict> = {
-  zh: { ...zhDict, ...languageNames.zh },
+  "zh-CN": { ...zhDict, ...languageNames["zh-CN"] },
   en: { ...enDict, ...languageNames.en },
   ja: { ...enDict, ...languageNames.ja },
   ko: { ...enDict, ...languageNames.ko },
@@ -351,9 +351,9 @@ const LANG_KEY = "ark_lang";
 export function I18nProvider({ children }: { children: React.ReactNode }) {
   const [lang, setLangState] = useState<Lang>(() => {
     const s = localStorage.getItem(LANG_KEY);
-    if (s === "zh-CN" || s === "zh-TW") return "zh";
+    if (s === "zh" || s === "zh-TW") return "zh-CN";
     if (
-      s === "zh" ||
+      s === "zh-CN" ||
       s === "en" ||
       s === "ja" ||
       s === "ko" ||
@@ -383,5 +383,5 @@ export function useI18n() {
 }
 
 export function langQuery(lang: Lang) {
-  return lang === "zh" ? "zh-CN" : lang;
+  return lang;
 }