A bare 'read -rsp' with no tty exits non-zero and set -e ends the script
with no output at all: the release drill watched 'rig runner remove' exit 1
in complete silence, and a guest bootstrap stop mid-log the same way. Every
prompt now checks for a tty first and dies naming the variable that
unblocks an unattended run; every read is || die-guarded so EOF at a real
prompt also gets a last word. The no-bare-read test swept up runner
repoint's two prompts, which the issue had not counted.
Fixes#42
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
