python .\file-acl-grant.py
attempt 1 sandboxed: processId 78299, runtime pid 25900, durationMs 3159, exitCode 1. icacls result 5. Not the measured outcome.
approval/asked then allowed: 1. Yes, proceed (y).
attempt 2: processId 46792, runtime pid 524, durationMs 13191, exitCode 0.
icacls grant result 0. effectComplete grant. acl-sample.txt.