Merge pull request #149 from dknauss/claude/whats-next-dc6xeq

test(e2e): use WP_BASE_URL in CHAL-04 return_url instead of hardcoded port

Author: dknauss

tests/e2e/specs/challenge.spec.ts

@@ -734,7 +734,7 @@ test.describe( 'Challenge flow', () => {
 
         await page.goto(
             '/wp-admin/admin.php?page=wp-sudo-challenge&stash_key=expired-key&return_url=' +
-            encodeURIComponent( 'http://localhost:8889/wp-admin/plugins.php' )
+            encodeURIComponent( `${ WP_BASE_URL }/wp-admin/plugins.php` )
         );
 
         await page.waitForURL( /plugins\.php/, { timeout: 15_000 } );