A6 added a fixed-height grid (Array.from({length: VISIBLE})), but the
row <Text> itself had no wrap prop so Ink defaulted to wrap="wrap".
A sufficiently long model or provider name would wrap to a second
visual line and bounce the overall picker height right back — which
is exactly what reappeared during the TUI v2 blitz retest on /model.
Pin every picker row (and the empty-state / padding rows) to
wrap="truncate-end" so each slot is guaranteed one line. Applies
across modelPicker, sessionPicker, and skillsHub.