feat(a2ui): Implement A2UI backend with question handling and WebSocket support

- Added A2UITypes for defining question structures and answers.
- Created A2UIWebSocketHandler for managing WebSocket connections and message handling.
- Developed ask-question tool for interactive user questions via A2UI.
- Introduced platformUtils for platform detection and shell command handling.
- Centralized TypeScript types in index.ts for better organization.
- Implemented compatibility checks for hook templates based on platform requirements.

ccw/frontend/src/locales/zh/project-overview.json

@@ -30,7 +30,14 @@
   "devIndex": {
     "title": "开发历史",
     "categories": "分类",
-    "timeline": "时间线"
+    "timeline": "时间线",
+    "category": {
+      "features": "功能",
+      "enhancements": "增强",
+      "bugfixes": "错误修复",
+      "refactorings": "重构",
+      "documentation": "文档"
+    }
   },
   "guidelines": {
     "title": "项目规范",