DnaBar's gradient stops were percentages of each bar's own total, so the
browser rasterized common strands differently per bar (sub-pixel bands
flipping visible/merged between steps) and inherited bands read thicker
and thinner across the chart. Stops now ride the shared per-token pixel
scale (CHART_H/maxTotal) and are byte-identical in every bar; the bar
height reuses the same scale. Live-measured on a 99-bar session with the
duration curve off: adjacent-bar common-row pixel diffs dropped 589 -> 11,
the remainder being genuinely new top-of-bar strands.
bowenliang123
a03e606f08