Backport of the keypress fix (PR #8082, merged to quattro as 5d3299fb) onto the
v4-0-1 release branch.
gum 2.0 runs a spun command without the terminal attached, so the gum spin --
read -n 1 that held the presentation terminal open returned at once. Every menu
command that ended in a failure took its window down with it before the error
could be read, which is how a failed update looked like a terminal that just
quit.
Read the key directly. gum's own terminal query replies are still sitting on the
tty when the spinner stops, so drain those first or they answer the prompt on
the user's behalf. The /dev/tty node is there whether or not a terminal is
behind it, so open it rather than test for it -- the existence check passed on a
headless run and left both reads failing with "No such device or address" -- and
prompt on the terminal rather than stdout, so a caller that redirects us does
not leave the user waiting on a prompt they were never shown.
The green dot reads better than the globe did, so the provisioning notice uses
it too and drops its spinner along the way.
Clean cherry-pick: both files are byte-identical to quattro, so merging v4-0-1
into quattro resolves without a conflict. Exercised against the installed gum
2.0.0: headless it exits 0 at once, and on a pty it prints the prompt and
returns on one keypress. test/shell (186 files) and test/cli pass.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018DEMYa9UWtroz93DhMTtcV
