feat(websocket): integrate A2UI message handling and answer callback registration

ccw/src/core/a2ui/A2UIWebSocketHandler.ts

@@ -58,6 +58,23 @@ export class A2UIWebSocketHandler {
     timestamp: number;
   }>();
 
+  private answerCallback?: (answer: QuestionAnswer) => boolean;
+
+  /**
+   * Register callback for handling question answers
+   * @param callback - Function to handle incoming answers
+   */
+  registerAnswerCallback(callback: (answer: QuestionAnswer) => boolean): void {
+    this.answerCallback = callback;
+  }
+
+  /**
+   * Get the registered answer callback
+   */
+  getAnswerCallback(): ((answer: QuestionAnswer) => boolean) | undefined {
+    return this.answerCallback;
+  }
+
   /**
    * Send A2UI surface to all connected clients
    * @param surfaceUpdate - A2UI surface update to send

ccw/src/core/websocket.ts

@@ -1,6 +1,8 @@
 import { createHash } from 'crypto';
 import type { IncomingMessage } from 'http';
 import type { Duplex } from 'stream';
+import { a2uiWebSocketHandler, handleA2UIMessage } from './a2ui/A2UIWebSocketHandler.js';
+import { handleAnswer } from '../tools/ask-question.js';
 
 // WebSocket clients for real-time notifications
 export const wsClients = new Set<Duplex>();
@@ -174,6 +176,11 @@ export function handleWebSocketUpgrade(req: IncomingMessage, socket: Duplex, _he
         case 0x1: // Text frame
           if (payload) {
             console.log('[WS] Received:', payload);
+            // Try to handle as A2UI message
+            const handledAsA2UI = handleA2UIMessage(payload, a2uiWebSocketHandler, handleAnswer);
+            if (handledAsA2UI) {
+              console.log('[WS] Handled as A2UI message');
+            }
           }
           break;
         case 0x8: // Close frame

ccw/src/tools/ask-question.ts

@@ -14,6 +14,7 @@ import type {
   AskQuestionResult,
   PendingQuestion,
 } from '../core/a2ui/A2UITypes.js';
+import { a2uiWebSocketHandler } from '../core/a2ui/A2UIWebSocketHandler.js';
 
 // ========== Constants ==========
 
@@ -332,8 +333,9 @@ export async function execute(params: AskQuestionParams): Promise<ToolResult<Ask
       }, params.timeout || DEFAULT_TIMEOUT_MS);
     });
 
-    // TODO: Send A2UI surface via WebSocket
+    // Send A2UI surface via WebSocket to frontend
-    // This will be handled by A2UIWebSocketHandler
+    const a2uiSurface = createA2UISurface(question, surfaceId);
+    a2uiWebSocketHandler.sendSurface(a2uiSurface.surfaceUpdate);
 
     // Wait for answer
     const result = await resultPromise;

ccw/src/tools/index.ts

@@ -26,6 +26,7 @@ import * as readFileMod from './read-file.js';
 import * as coreMemoryMod from './core-memory.js';
 import * as contextCacheMod from './context-cache.js';
 import * as skillContextLoaderMod from './skill-context-loader.js';
+import * as askQuestionMod from './ask-question.js';
 import type { ProgressInfo } from './codex-lens.js';
 
 // Import legacy JS tools
@@ -366,6 +367,7 @@ registerTool(toLegacyTool(readFileMod));
 registerTool(toLegacyTool(coreMemoryMod));
 registerTool(toLegacyTool(contextCacheMod));
 registerTool(toLegacyTool(skillContextLoaderMod));
+registerTool(toLegacyTool(askQuestionMod));
 
 // Register legacy JS tools
 registerTool(uiGeneratePreviewTool);