test: add temporary padding to verify bundle size delta reporting

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

Author: bkbooth

packages/audience/pixel/src/iife.ts

@@ -6,3 +6,13 @@
  * bundle as small as possible.
  */
 import './bootstrap';
+
+// TEST: temporary side-effectful padding to verify bundle size delta (not tree-shakeable)
+// eslint-disable-next-line no-underscore-dangle
+(window as Record<string, unknown>).__imtblBundleTest = [
+  'Temporary padding to verify bundle size delta reporting.',
+  'This array exists solely to inflate the bundle for CI testing.',
+  'It will be removed after verifying the delta calculation works.',
+  'Adding enough unique text to make a visible gzipped difference.',
+  'The previous attempt used an unused variable which tsup tree-shook away.',
+].join(' ');