feat: 添加日语和韩语国际化，并且优化语言相关代码

src/i18n/utils.ts

@@ -0,0 +1,60 @@
+// 自动导入所有语言的所有翻译文件
+const allLangModules = import.meta.glob('./lang/**/*.ts', { eager: true });
+
+// 构建语言消息对象
+export const buildLanguageMessages = () => {
+  const messages: Record<string, Record<string, any>> = {};
+
+  Object.entries(allLangModules).forEach(([path, module]) => {
+    // 解析路径，例如 './lang/zh-CN/common.ts' -> { lang: 'zh-CN', module: 'common' }
+    const match = path.match(/\.\/lang\/([^/]+)\/([^/]+)\.ts$/);
+    if (match) {
+      const [, langCode, moduleName] = match;
+      
+      // 跳过 index 文件
+      if (moduleName !== 'index') {
+        if (!messages[langCode]) {
+          messages[langCode] = {};
+        }
+        messages[langCode][moduleName] = (module as any).default;
+      }
+    }
+  });
+
+  return messages;
+};
+
+// 获取所有支持的语言
+export const getSupportedLanguages = (): string[] => {
+  const messages = buildLanguageMessages();
+  return Object.keys(messages);
+};
+
+export const isLanguageSupported = (lang: string): boolean => {
+  return getSupportedLanguages().includes(lang);
+};
+
+import { LANGUAGE_DISPLAY_NAMES, LANGUAGE_PRIORITY } from './languages';
+
+// 获取语言显示名称的映射
+export const getLanguageDisplayNames = (): Record<string, string> => {
+  return LANGUAGE_DISPLAY_NAMES;
+};
+
+// 生成语言选项数组，用于下拉选择等组件
+export const getLanguageOptions = () => {
+  const supportedLanguages = getSupportedLanguages();
+  const displayNames = getLanguageDisplayNames();
+  
+  // 按优先级排序
+  const sortedLanguages = supportedLanguages.sort((a, b) => {
+    const priorityA = LANGUAGE_PRIORITY[a] || 999;
+    const priorityB = LANGUAGE_PRIORITY[b] || 999;
+    return priorityA - priorityB;
+  });
+  
+  return sortedLanguages.map(lang => ({
+    label: displayNames[lang] || lang,
+    value: lang
+  }));
+};