Newer claude 2.1.x renders the input bar with a `shift+tab to cycle`
footer (part of "⏵⏵ bypass permissions on (shift+tab to cycle)") instead
of the classic `? for shortcuts` hint. tuiInputReady() matched only the
old string, so on those builds every pane read as never-ready: cold boots
timed out (tui_pane_not_ready) and, with the warm pool on, every pre-boot
failed (bootFailures climbed, warm hits stayed at zero) with no error
surfaced to the operator.
Widen the matcher to accept either footer. Keep the test replica verbatim
and add a positive case for the new footer.
Co-authored-by: sumlin <3495838+sumlin@users.noreply.github.com>
