Runner host environment (2026-11-08)
=====================================
python_version : 3.14.2
platform       : Windows-11-10.0.26300-SP0
sys.platform   : win32
stdlib only    : the runner imports hashlib, json, sys, pathlib (no third-party packages)
network        : none during verification (candidate files fetched from GitHub raw beforehand;
                  every run recorded in run-output.txt is offline)