modeSwipeGesture's onDragEnd had its comparison signs backwards relative
to this app's drag-follows-finger convention (already correct in
BranchDetailScreen's HorizontalPager): swiping right moved ALL ->
FAVORITES and swiping left moved FAVORITES -> ALL. Swapped the two
branch conditions so a leftward drag reveals FAVORITES (the right-hand
tab) and a rightward drag reveals ALL (the left-hand tab).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>