The assistant message footer (model · duration · tokens · cost · cache% · time · actions)
could overflow its row on mobile/narrow panes, pushing the per-message action buttons off
the right edge where they were unreachable. #4724 proposed ellipsing every stat, which
shrank them into unreadable stubs (D…, 98…). This instead lets .msg-foot flex-wrap to a
second line: every stat stays full-size + readable, the actions/time are pinned flex:0 0
auto so they never shrink and stay on-screen, and on wider screens where it already fits
wrap never triggers. Pure CSS. + source-structure regression test.
Co-authored-by: starship-s <starship-s@users.noreply.github.com>
