On Ubuntu 22.04+, useradd creates home directories with 750 permissions,
so the non-root user running the script cannot traverse /home/kiosk to
check file existence with [[ -s ]]. sudo tee (running as root) writes the
files successfully, but the bash test always returned false, falsely
reporting all extractions as failed.
Switch to `sudo test -s` to match the pattern already used elsewhere in
the script (line ~10320) when checking files under /home/kiosk.
https://claude.ai/code/session_01M3tiofbGfmTddeMcXr8nXr
Claude