Callers previously morphed the existing lines on a reload, so picking a new
range only glided in place. Now every range/fuel selection (the only reloads;
the sheet has no periodic refetch) replays the staggered per-series draw-in
via revealSeries(), so the lines visibly redraw left->right when the user
switches 7/30/90. Price<->vs-cheapest still morphs (pure view toggle, no
reload). Reduce Motion jump-cuts.
FuelBoard Contributor
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