fix(pixel): thread identityType and traits through bootstrap handler

The bootstrap command handler only forwarded two args to identify(),
silently dropping traits. Forward all three args to match the updated
Pixel.identify(userId, identityType, traits?) signature.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: bkbooth

packages/audience/pixel/src/bootstrap.test.ts

@@ -65,14 +65,14 @@ describe('bootstrap', () => {
     (window as Record<string, unknown>).__imtbl = [
       ['init', { key: 'pk_test' }],
       ['consent', 'full'],
-      ['identify', 'user-1', { email: 'a@b.com' }],
+      ['identify', 'user-1', 'passport', { email: 'a@b.com' }],
     ];
 
     require('./bootstrap');
 
     expect(mockInit).toHaveBeenCalledWith({ key: 'pk_test' });
     expect(mockSetConsent).toHaveBeenCalledWith('full');
-    expect(mockIdentify).toHaveBeenCalledWith('user-1', { email: 'a@b.com' });
+    expect(mockIdentify).toHaveBeenCalledWith('user-1', 'passport', { email: 'a@b.com' });
   });
 
   it('installs loader and handles new commands after load', () => {

packages/audience/pixel/src/bootstrap.ts

@@ -27,6 +27,7 @@ function handleCommand(command: Command): void {
       pixel.identify(
         args[0] as string,
         args[1] as Parameters<Pixel['identify']>[1],
+        args[2] as Parameters<Pixel['identify']>[2],
       );
       break;
     case 'consent':