The distribution-bar key de-collides labels by sweeping each one right to
clear its neighbour, which collapsed a row toward the right edge whenever an
early bucket was tiny — Cool/Comfortable slid far from their large segments
instead of sitting under them. Replace the sweep with standard 1-D label
placement: keep each label at its segment midpoint, merge only labels that
actually overlap into a block, and position each block at the least-squares
mean of its members' ideals. Isolated labels no longer move; clusters centre
on their segments instead of sliding to an edge. The run is clamped inside
the bar, and mobile keeps its plain wrapping row.
cd55b63e48
