fix(pixel): support environment in snippet generator for non-prod endpoints (#2849)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: bkbooth

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

@@ -45,4 +45,28 @@ describe('generateSnippet', () => {
     expect(html).toContain('s.async=1');
     expect(html).toContain('document.head.appendChild(s)');
   });
+
+  it('includes environment in init args when not production', () => {
+    const html = generateSnippet({ key: 'pk_test_123', environment: 'dev' });
+
+    expect(html).toContain('"environment":"dev"');
+  });
+
+  it('includes sandbox environment in init args', () => {
+    const html = generateSnippet({ key: 'pk_test_123', environment: 'sandbox' });
+
+    expect(html).toContain('"environment":"sandbox"');
+  });
+
+  it('omits environment from init args when set to production', () => {
+    const html = generateSnippet({ key: 'pk_test_123', environment: 'production' });
+
+    expect(html).not.toContain('environment');
+  });
+
+  it('omits environment from init args when not provided', () => {
+    const html = generateSnippet({ key: 'pk_test_123' });
+
+    expect(html).not.toContain('environment');
+  });
 });

packages/audience/pixel/src/snippet.ts

@@ -1,15 +1,23 @@
+import type { Environment } from '@imtbl/audience-core';
+
 const DEFAULT_CDN_URL = 'https://cdn.immutable.com/pixel/v1/imtbl.js';
 
 export interface SnippetOptions {
   key: string;
   cdnUrl?: string;
   consent?: 'none' | 'anonymous' | 'full';
+  environment?: Environment;
 }
 
 export function generateSnippet(options: SnippetOptions): string {
-  const { key, cdnUrl = DEFAULT_CDN_URL, consent } = options;
+  const {
+    key, cdnUrl = DEFAULT_CDN_URL, consent, environment,
+  } = options;
 
   const initArgs: Record<string, string> = { key };
+  if (environment && environment !== 'production') {
+    initArgs.environment = environment;
+  }
   if (consent) {
     initArgs.consent = consent;
   }