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/i18n/index.ts

@@ -0,0 +1,106 @@
+import { createI18n, type I18n, type I18nOptions } from 'vue-i18n';
+import { SUPPORTED_LANGUAGE_CODES, SUPPORTED_LANGUAGES, NAMESPACES, type LanguageCode } from './constants';
+import { resolveSupportedLanguage, detectSystemLanguage } from './resolver';
+
+// 使用 import.meta.glob 动态加载所有语言文件
+// 文件路径模式：./locales/{语言}/{命名空间}.json
+const modules = import.meta.glob('./locales/*/*.json', { eager: true });
+
+// 构建 vue-i18n 格式的资源对象：{ [locale]: { [namespace]: messages } }
+function buildResources() {
+  const resources: Record<string, Record<string, any>> = {};
+
+  // 初始化每种语言的空对象
+  SUPPORTED_LANGUAGE_CODES.forEach(lang => {
+    resources[lang] = {};
+  });
+
+  // 遍历所有模块，按语言和命名空间组织
+  for (const [path, module] of Object.entries(modules)) {
+    // 路径示例：'./locales/en/common.json'
+    const match = path.match(/\.\/locales\/([a-z]{2})\/([a-z]+)\.json$/);
+    if (!match) continue;
+
+    const [, lang, namespace] = match;
+    if (!SUPPORTED_LANGUAGE_CODES.includes(lang as LanguageCode) || !NAMESPACES.includes(namespace as any)) {
+      continue;
+    }
+
+    // @ts-expect-error: module 可能是 Module 类型
+    const messages = (module as any).default || module;
+    resources[lang][namespace] = messages;
+  }
+
+  return resources;
+}
+
+// 获取持久化的语言设置（稍后由 Pinia store 提供）
+function getPersistedLanguage(): LanguageCode | null {
+  try {
+    const saved = localStorage.getItem('diona-language');
+    return saved && SUPPORTED_LANGUAGE_CODES.includes(saved as LanguageCode) ? saved as LanguageCode : null;
+  } catch {
+    return null;
+  }
+}
+
+// 确定初始语言：持久化设置 > 系统语言 > 默认中文
+function determineInitialLocale(): LanguageCode {
+  const persisted = getPersistedLanguage();
+  if (persisted) return persisted;
+
+  const systemLang = detectSystemLanguage();
+  return systemLang;
+}
+
+async function createI18nInstance() {
+  const resources = buildResources();
+  const initialLocale = determineInitialLocale();
+
+  const options: I18nOptions = {
+    legacy: false,
+    locale: initialLocale,
+    fallbackLocale: 'zh',
+    messages: resources, // 使用构建的资源对象
+    availableLocales: SUPPORTED_LANGUAGE_CODES,
+    fallbackFormat: true,
+    datetimeFormats: {},
+    numberFormats: {},
+  };
+
+  const i18n = createI18n(options);
+  return i18n;
+}
+
+// 创建 i18n 实例
+export const i18n = await createI18nInstance();
+
+// 兼容性 API
+export async function setLanguage(lang: LanguageCode, _i18n?: I18n) {
+  const __i18n = _i18n ?? i18n;
+
+  if (__i18n.mode === 'legacy') {
+    __i18n.global.locale = lang;
+    return;
+  }
+
+  (__i18n.global.locale as unknown as { value: LanguageCode }).value = lang;
+  
+  // 持久化到 localStorage（稍后由 Pinia store 处理）
+  try {
+    localStorage.setItem('diona-language', lang);
+  } catch {}
+}
+
+export function getLanguage() {
+  if (i18n.mode === 'legacy') {
+    return i18n.global.locale;
+  }
+  
+  return (i18n.global.locale as unknown as { value: LanguageCode }).value;
+}
+
+// 导出类型和常量
+export type { LanguageCode };
+export { SUPPORTED_LANGUAGE_CODES, SUPPORTED_LANGUAGES, NAMESPACES };
+export default i18n;