Add multi-language support for UI

- Add 30 new locale files (ar, bn, cs, da, de, el, es, fi, fr, he, hi, hu, id, it, ja, ko, nl, no, pl, pt-BR, pt-PT, ro, ru, sv, th, tl, tr, uk, ur, zh-TW)
- Update i18n config to register new languages
- Update LanguageSwitcher component to support expanded language list
- Update localDb and pricing constants for i18n compatibility

Made-with: Cursor

src/i18n/config.js

@@ -1,11 +1,41 @@
-export const LOCALES = ["en", "vi", "zh-CN"];
+export const LOCALES = ["en", "vi", "zh-CN", "zh-TW", "ja", "pt-BR", "pt-PT", "ko", "es", "de", "fr", "he", "ar", "ru", "pl", "cs", "nl", "tr", "uk", "tl", "id", "th", "hi", "bn", "ur", "ro", "sv", "it", "el", "hu", "fi", "da", "no"];
 export const DEFAULT_LOCALE = "en";
 export const LOCALE_COOKIE = "locale";
 
 export const LOCALE_NAMES = {
   "en": "English",
   "vi": "Tiếng Việt",
-  "zh-CN": "简体中文"
+  "zh-CN": "简体中文",
+  "zh-TW": "繁體中文",
+  "ja": "日本語",
+  "pt-BR": "Português (Brasil)",
+  "pt-PT": "Português (Portugal)",
+  "ko": "한국어",
+  "es": "Español",
+  "de": "Deutsch",
+  "fr": "Français",
+  "he": "עברית",
+  "ar": "العربية",
+  "ru": "Русский",
+  "pl": "Polski",
+  "cs": "Čeština",
+  "nl": "Nederlands",
+  "tr": "Türkçe",
+  "uk": "Українська",
+  "tl": "Tagalog",
+  "id": "Indonesia",
+  "th": "ไทย",
+  "hi": "हिन्दी",
+  "bn": "বাংলা",
+  "ur": "اردو",
+  "ro": "Română",
+  "sv": "Svenska",
+  "it": "Italiano",
+  "el": "Ελληνικά",
+  "hu": "Magyar",
+  "fi": "Suomi",
+  "da": "Dansk",
+  "no": "Norsk"
 };
 
 export function normalizeLocale(locale) {
@@ -18,6 +48,96 @@ export function normalizeLocale(locale) {
   if (locale === "vi") {
     return "vi";
   }
+  if (locale === "zh-TW") {
+    return "zh-TW";
+  }
+  if (locale === "ja") {
+    return "ja";
+  }
+  if (locale === "pt-BR") {
+    return "pt-BR";
+  }
+  if (locale === "pt-PT") {
+    return "pt-PT";
+  }
+  if (locale === "ko") {
+    return "ko";
+  }
+  if (locale === "es") {
+    return "es";
+  }
+  if (locale === "de") {
+    return "de";
+  }
+  if (locale === "fr") {
+    return "fr";
+  }
+  if (locale === "he") {
+    return "he";
+  }
+  if (locale === "ar") {
+    return "ar";
+  }
+  if (locale === "ru") {
+    return "ru";
+  }
+  if (locale === "pl") {
+    return "pl";
+  }
+  if (locale === "cs") {
+    return "cs";
+  }
+  if (locale === "nl") {
+    return "nl";
+  }
+  if (locale === "tr") {
+    return "tr";
+  }
+  if (locale === "uk") {
+    return "uk";
+  }
+  if (locale === "tl") {
+    return "tl";
+  }
+  if (locale === "id") {
+    return "id";
+  }
+  if (locale === "th") {
+    return "th";
+  }
+  if (locale === "hi") {
+    return "hi";
+  }
+  if (locale === "bn") {
+    return "bn";
+  }
+  if (locale === "ur") {
+    return "ur";
+  }
+  if (locale === "ro") {
+    return "ro";
+  }
+  if (locale === "sv") {
+    return "sv";
+  }
+  if (locale === "it") {
+    return "it";
+  }
+  if (locale === "el") {
+    return "el";
+  }
+  if (locale === "hu") {
+    return "hu";
+  }
+  if (locale === "fi") {
+    return "fi";
+  }
+  if (locale === "da") {
+    return "da";
+  }
+  if (locale === "no") {
+    return "no";
+  }
   return DEFAULT_LOCALE;
 }