Fix: correct language handling and remove zh-CN locale (#6041)

src/pages/index.jsx

@@ -41,6 +41,17 @@ const Version = dynamic(() => import("components/version"), {
 
 const rightAlignedWidgets = ["weatherapi", "openweathermap", "weather", "openmeteo", "search", "datetime"];
 
+// Normalize language codes so older config values like zh-CN still point to Crowdin-provided ones
+const LANGUAGE_ALIASES = {
+  "zh-cn": "zh-Hans",
+};
+
+const normalizeLanguage = (language) => {
+  if (!language) return "en";
+  const alias = LANGUAGE_ALIASES[language.toLowerCase()];
+  return alias || language;
+};
+
 export async function getStaticProps() {
   let logger;
   try {
@@ -50,6 +61,7 @@ export async function getStaticProps() {
     const services = await servicesResponse();
     const bookmarks = await bookmarksResponse();
     const widgets = await widgetsResponse();
+    const language = normalizeLanguage(settings.language);
 
     return {
       props: {
@@ -60,7 +72,7 @@ export async function getStaticProps() {
           "/api/widgets": widgets,
           "/api/hash": false,
         },
-        ...(await serverSideTranslations(settings.language ?? "en")),
+        ...(await serverSideTranslations(language)),
       },
     };
   } catch (e) {
@@ -218,8 +230,9 @@ function Home({ initialSettings }) {
   );
 
   useEffect(() => {
-    if (settings.language) {
-      i18n.changeLanguage(settings.language);
+    const language = normalizeLanguage(settings.language);
+    if (language) {
+      i18n.changeLanguage(language);
     }
 
     if (settings.theme && theme !== settings.theme) {