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/constants.ts

@@ -0,0 +1,23 @@
+export const SUPPORTED_LANGUAGE_CODES = ['en', 'zh', 'ja'] as const;
+export type LanguageCode = (typeof SUPPORTED_LANGUAGE_CODES)[number];
+
+export const SUPPORTED_LANGUAGES = [
+  { code: 'en', label: 'English' },
+  { code: 'zh', label: '中文' },
+  { code: 'ja', label: '日本語' },
+] as const;
+
+// 命名空间定义
+export const NAMESPACES = [
+  'common',
+  'conversation',
+  'setting',
+  'menu',
+  'login',
+  'dashboard',
+  'task',
+  'rate',
+  'knowledge',
+  'component',
+] as const;
+export type Namespace = (typeof NAMESPACES)[number];