The first icacls grant did not take (bin files stayed Users:RX), so a stopped service
still could not be updated without admin. Grant BUILTIN\Users (SID *S-1-5-32-545,
locale-independent) Modify with (OI)(CI)(M) and /T over existing contents, and log
icacls stderr on failure instead of swallowing it. Matching fix in the dev bootstrap
script.
Gate: 40/40.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>