feat: Add Portuguese (pt-BR) Support and Refactored I18n Architecture

packages/cli/src/i18n/languages.ts

@@ -4,7 +4,14 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-export type SupportedLanguage = 'en' | 'zh' | 'ru' | 'de' | 'ja' | string;
+export type SupportedLanguage =
+  | 'en'
+  | 'zh'
+  | 'ru'
+  | 'de'
+  | 'ja'
+  | 'pt'
+  | string;
 
 export interface LanguageDefinition {
   /** The internal locale code used by the i18n system (e.g., 'en', 'zh'). */
@@ -13,6 +20,8 @@ export interface LanguageDefinition {
   id: string;
   /** The full English name of the language (e.g., 'English', 'Chinese'). */
   fullName: string;
+  /** The native name of the language (e.g., 'English', '中文'). */
+  nativeName?: string;
 }
 
 export const SUPPORTED_LANGUAGES: readonly LanguageDefinition[] = [
@@ -20,26 +29,37 @@ export const SUPPORTED_LANGUAGES: readonly LanguageDefinition[] = [
     code: 'en',
     id: 'en-US',
     fullName: 'English',
+    nativeName: 'English',
   },
   {
     code: 'zh',
     id: 'zh-CN',
     fullName: 'Chinese',
+    nativeName: '中文',
   },
   {
     code: 'ru',
     id: 'ru-RU',
     fullName: 'Russian',
+    nativeName: 'Русский',
   },
   {
     code: 'de',
     id: 'de-DE',
     fullName: 'German',
+    nativeName: 'Deutsch',
   },
   {
     code: 'ja',
     id: 'ja-JP',
     fullName: 'Japanese',
+    nativeName: '日本語',
+  },
+  {
+    code: 'pt',
+    id: 'pt-BR',
+    fullName: 'Portuguese',
+    nativeName: 'Português',
   },
 ];
 
@@ -51,3 +71,28 @@ export function getLanguageNameFromLocale(locale: SupportedLanguage): string {
   const lang = SUPPORTED_LANGUAGES.find((l) => l.code === locale);
   return lang?.fullName || 'English';
 }
+
+/**
+ * Gets the language options for the settings schema.
+ */
+export function getLanguageSettingsOptions(): Array<{
+  value: string;
+  label: string;
+}> {
+  return [
+    { value: 'auto', label: 'Auto (detect from system)' },
+    ...SUPPORTED_LANGUAGES.map((l) => ({
+      value: l.code,
+      label: l.nativeName
+        ? `${l.nativeName} (${l.fullName})`
+        : `${l.fullName} (${l.id})`,
+    })),
+  ];
+}
+
+/**
+ * Gets a string containing all supported language IDs (e.g., "en-US|zh-CN").
+ */
+export function getSupportedLanguageIds(separator = '|'): string {
+  return SUPPORTED_LANGUAGES.map((l) => l.id).join(separator);
+}