chore: restructure project and add i18n support

- Reorganize project structure with new electron and shared directories
- Add comprehensive i18n support with Chinese, English, and Japanese locales
- Update build configurations and TypeScript paths for new structure
- Add various UI components including chat interface and task management
- Include Windows release binaries and localization files
- Update dependencies and fix import paths throughout the codebase

src/composables/useLocale.ts

@@ -0,0 +1,103 @@
+import { useI18n } from 'vue-i18n';
+import { useLocaleStore } from '@src/store/locale';
+import { SUPPORTED_LANGUAGES, type LanguageCode, type Namespace } from '@src/i18n/constants';
+
+/**
+ * 类型安全的国际化 composable
+ * 提供翻译函数、语言切换和状态管理
+ */
+export function useLocale() {
+  const { t, te, tm, rt, d, n, ...i18nApi } = useI18n();
+  const localeStore = useLocaleStore();
+
+  /**
+   * 类型安全的翻译函数
+   * @param key 翻译键，格式为 'namespace.key' 或 'key'（使用默认命名空间）
+   * @param params 插值参数
+   */
+  const translate = (key: string, params?: Record<string, any>): string => {
+    return t(key, params);
+  };
+
+  /**
+   * 检查翻译键是否存在
+   */
+  const hasTranslation = (key: string): boolean => {
+    return te(key);
+  };
+
+  /**
+   * 切换语言
+   */
+  const switchLanguage = async (language: LanguageCode) => {
+    await localeStore.setLanguage(language);
+  };
+
+  /**
+   * 切换语言（轮换）
+   */
+  const toggleLanguage = async () => {
+    await localeStore.toggleLanguage();
+  };
+
+  /**
+   * 重置为系统语言
+   */
+  const resetToSystemLanguage = async () => {
+    await localeStore.resetToSystemLanguage();
+  };
+
+  /**
+   * 获取当前语言代码
+   */
+  const currentLanguage = () => localeStore.currentLanguage;
+
+  /**
+   * 获取当前语言标签
+   */
+  const currentLanguageLabel = () => localeStore.languageLabel;
+
+  /**
+   * 获取支持的语言列表
+   */
+  const supportedLanguages = () => SUPPORTED_LANGUAGES;
+
+  /**
+   * 初始化语言设置（如果尚未初始化）
+   */
+  const initLocale = async () => {
+    await localeStore.init();
+  };
+
+  return {
+    // 翻译函数
+    t: translate,
+    te: hasTranslation,
+    tm: i18nApi.tm,
+    rt: i18nApi.rt,
+    d: i18nApi.d,
+    n: i18nApi.n,
+
+    // 语言切换
+    switchLanguage,
+    toggleLanguage,
+    resetToSystemLanguage,
+
+    // 状态获取
+    currentLanguage,
+    currentLanguageLabel,
+    supportedLanguages,
+
+    // 初始化
+    initLocale,
+
+    // 原始 i18n API
+    ...i18nApi,
+
+    // store 引用（谨慎使用）
+    localeStore,
+  };
+}
+
+// 导出类型
+export type { LanguageCode, Namespace };