confirm() and uninstall_confirm() read the operator's answer with a bare
'read -r reply'. Ctrl-D makes read return non-zero, set -euo pipefail ends
the run on that line, and the case below — the only thing that ever says
"aborted." — is never reached. box exits 1 having printed nothing after
the question it just asked.
The cure is one token in each, 'read -r reply || die "aborted."', the same
one heavy-duty/rig#43 applied to rig's credential prompts.
The three answers a human can give (y, n, Ctrl-D) are now driven on a real
pty via util-linux 'script'. They were structurally untested before —
'[ -t 0 ]' sends a terminal-less suite to the refusal branch, so every
existing check stopped there, which is how this survived four releases.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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