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

electron/utils/db.ts

@@ -0,0 +1,5 @@
+import Dexie from 'dexie'
+
+export const db = new Dexie('NianXX') as Dexie & {}
+
+db.version(1).stores({})