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/en/home.json

@@ -30,6 +30,26 @@
       "message": "Create an issue to track bugs or feature requests."
     }
   },
+  "help": {
+    "gettingStarted": {
+      "title": "Getting Started",
+      "description": "Learn the basics of CCW Dashboard and workflow management",
+      "heading": "Getting Started with CCW"
+    },
+    "orchestratorGuide": {
+      "title": "Orchestrator Guide",
+      "description": "Master the visual workflow editor with drag-drop flows"
+    },
+    "sessionsManagement": {
+      "title": "Sessions Management",
+      "description": "Understanding workflow sessions and task tracking"
+    },
+    "cliIntegration": {
+      "title": "CLI Integration",
+      "description": "Using CCW commands and CLI tool integration",
+      "heading": "CLI Integration"
+    }
+  },
   "errors": {
     "loadFailed": "Failed to load dashboard data",
     "retry": "Retry"