fix: respond to request_contact immediately, send confirmation as text

The deferred tool response approach caused Gemini to timeout waiting.
Now request_contact responds immediately (telling the agent to wait),
and the confirm button sends a text message through the live WebSocket
to trigger complete_brief.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/configurator/VoiceAgentProvider.tsx

@@ -149,7 +149,6 @@ export default function VoiceAgentProvider({ locale, children }: VoiceAgentProvi
   const turnCompleteRef = useRef(true);
   const briefSubmittedRef = useRef(false);
   const pendingContactRef = useRef<PendingContact | null>(null);
-  const pendingContactCallIdRef = useRef('');
   const reconnectTranscriptRef = useRef<TranscriptEntry[]>([]);
   const statusRef = useRef<ConnectionStatus>('idle');
   const wsRef = useRef<WebSocket | null>(null);
@@ -217,9 +216,9 @@ export default function VoiceAgentProvider({ locale, children }: VoiceAgentProvi
         const contact = { name: contactName, email: contactEmail };
         setPendingContact(contact);
         pendingContactRef.current = contact;
-        pendingContactCallIdRef.current = callId;
-        // Don't return a tool response yet — wait for user confirmation via confirmContact()
-        return '__DEFERRED__';
+        // Respond immediately so Gemini doesn't timeout waiting for a tool response.
+        // The agent is told to wait — user confirmation comes as a text message via confirmContact().
+        return JSON.stringify({ success: true, message: 'Contact card is now shown on screen. Wait for the user to review and confirm before calling complete_brief. Do not proceed until you hear confirmation.' });
       }
 
       if (name === 'complete_brief') {
@@ -293,7 +292,6 @@ export default function VoiceAgentProvider({ locale, children }: VoiceAgentProvi
       setSelections({});
       setPendingContact(null);
       pendingContactRef.current = null;
-      pendingContactCallIdRef.current = '';
     }
     setCompletedBrief(null);
     setCompletedFormData(null);
@@ -463,13 +461,9 @@ export default function VoiceAgentProvider({ locale, children }: VoiceAgentProvi
             const responses = [];
             for (const call of calls) {
               const result = await handleToolCall(call.name, call.args ?? {}, call.id);
-              if (result !== '__DEFERRED__') {
-                responses.push({ id: call.id, name: call.name, response: { result } });
-              }
-            }
-            if (responses.length > 0) {
-              ws.send(JSON.stringify({ toolResponse: { functionResponses: responses } }));
+              responses.push({ id: call.id, name: call.name, response: { result } });
             }
+            ws.send(JSON.stringify({ toolResponse: { functionResponses: responses } }));
           }
         }
       };
@@ -543,7 +537,6 @@ export default function VoiceAgentProvider({ locale, children }: VoiceAgentProvi
     setAgentAmplitude(0);
     setCanReconnect(false);
     reconnectTranscriptRef.current = [];
-    pendingContactCallIdRef.current = '';
     setStatus('idle');
   }, []);
 
@@ -558,19 +551,18 @@ export default function VoiceAgentProvider({ locale, children }: VoiceAgentProvi
 
   const confirmContact = useCallback(() => {
     if (!pendingContactRef.current) return;
-    // Send confirmation back through WebSocket so the agent knows
+    // Send a text message to let the agent know the user confirmed their details
     if (wsRef.current?.readyState === WebSocket.OPEN) {
+      const { name, email } = pendingContactRef.current;
       wsRef.current.send(JSON.stringify({
-        toolResponse: {
-          functionResponses: [{
-            id: pendingContactCallIdRef.current,
-            name: 'request_contact',
-            response: { result: JSON.stringify({ confirmed: true, name: pendingContactRef.current.name, email: pendingContactRef.current.email }) },
-          }],
+        realtimeInput: {
+          text: `The user has confirmed their contact details on screen. Name: ${name}, Email: ${email}. You may now call complete_brief.`,
         },
       }));
+      console.log('[VoiceAgent] Contact confirmed, notified agent');
+    } else {
+      console.warn('[VoiceAgent] Cannot confirm contact — WebSocket not open');
     }
-    pendingContactCallIdRef.current = '';
   }, []);
 
   const reconnect = useCallback(async () => {