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/store/locale.ts

@@ -0,0 +1,129 @@
+import { defineStore } from 'pinia';
+import { i18n, setLanguage, getLanguage, type LanguageCode } from '@src/i18n';
+import { SUPPORTED_LANGUAGES, SUPPORTED_LANGUAGE_CODES } from '@src/i18n/constants';
+import { resolveSupportedLanguage, detectSystemLanguage } from '@src/i18n/resolver';
+
+// 持久化键
+const STORAGE_KEY = 'diona-language';
+
+interface LocaleState {
+  language: LanguageCode;
+  initialized: boolean;
+}
+
+export const useLocaleStore = defineStore('locale', {
+  state: (): LocaleState => ({
+    language: 'zh',
+    initialized: false,
+  }),
+
+  getters: {
+    currentLanguage: (state) => state.language,
+    isChinese: (state) => state.language === 'zh',
+    isEnglish: (state) => state.language === 'en',
+    isJapanese: (state) => state.language === 'ja',
+    languageLabel: (state) => {
+      const lang = SUPPORTED_LANGUAGES.find(l => l.code === state.language);
+      return lang?.label || '中文';
+    },
+  },
+
+  actions: {
+    /**
+     * 初始化语言设置
+     * 优先级：持久化设置 > 系统语言 > 默认中文
+     */
+    async init() {
+      if (this.initialized) return;
+
+      try {
+        // 1. 尝试从 localStorage 读取持久化设置
+        const saved = localStorage.getItem(STORAGE_KEY);
+        let lang: LanguageCode = 'zh';
+
+        if (saved && SUPPORTED_LANGUAGE_CODES.includes(saved as LanguageCode)) {
+          lang = saved as LanguageCode;
+        } else {
+          // 2. 检测系统语言
+          lang = detectSystemLanguage();
+        }
+
+        // 3. 应用语言设置
+        await this.setLanguage(lang, false); // 不持久化，因为已经是持久化的值
+
+        this.initialized = true;
+      } catch (error) {
+        console.error('Failed to initialize locale store:', error);
+        // 降级处理：使用默认中文
+        await this.setLanguage('zh', false);
+        this.initialized = true;
+      }
+    },
+
+    /**
+     * 设置语言
+     * @param language 目标语言代码
+     * @param persist 是否持久化到 localStorage（默认为 true）
+     */
+    async setLanguage(language: LanguageCode, persist: boolean = true) {
+      // 验证语言代码有效性
+      const resolvedLang = resolveSupportedLanguage(language);
+      
+      if (resolvedLang === this.language) {
+        return; // 语言未变化
+      }
+
+      try {
+        // 1. 更新 i18n 实例
+        await setLanguage(resolvedLang, i18n);
+
+        // 2. 更新 store 状态
+        this.language = resolvedLang;
+
+        // 3. 持久化到 localStorage
+        if (persist) {
+          localStorage.setItem(STORAGE_KEY, resolvedLang);
+        }
+
+        // 4. 触发语言变化事件（供其他组件监听）
+        window.dispatchEvent(new CustomEvent('language-changed', { 
+          detail: { language: resolvedLang } 
+        }));
+      } catch (error) {
+        console.error('Failed to set language:', error);
+        throw error;
+      }
+    },
+
+    /**
+     * 切换语言（轮换支持的语言）
+     */
+    async toggleLanguage() {
+      const currentIndex = SUPPORTED_LANGUAGE_CODES.indexOf(this.language);
+      const nextIndex = (currentIndex + 1) % SUPPORTED_LANGUAGE_CODES.length;
+      const nextLanguage = SUPPORTED_LANGUAGE_CODES[nextIndex];
+      await this.setLanguage(nextLanguage);
+    },
+
+    /**
+     * 重置为系统语言
+     */
+    async resetToSystemLanguage() {
+      const systemLang = detectSystemLanguage();
+      await this.setLanguage(systemLang);
+    },
+
+    /**
+     * 同步 i18n 实例与 store 状态（用于外部更改的情况）
+     */
+    syncWithI18n() {
+      const currentLang = getLanguage();
+      if (currentLang !== this.language) {
+        this.language = currentLang as LanguageCode;
+      }
+    },
+  },
+});
+
+// 导出类型
+export type { LanguageCode };