fix(chart): mark short-span stub series with endpoint dots#74
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gcbm_moja_v6 (CBM) spans only 2022-2026 on Maine while every other engine runs to 2072+. On the full-horizon chart it rendered as a short floating dashed segment that read like a glitch. Short-span series (<=3 pts or spanning <25% of the x-range) now get endpoint dot markers so they read as the measured anchor points they are. No data dropped; the line still draws. Build verified.
This was referenced Jun 12, 2026
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Problem
On the growth-curve chart,
gcbm_moja_v6(CBM class) is a short anchor run spanning only 2022-2026 while every other engine projects to 2072 or 2125. On the full-horizon chart it rendered as a short floating dashed segment in the upper-left that reads like a rendering glitch (flagged in the 11 June live-site spot-check).Fix
Series whose plotted span covers less than 25% of the chart x-range (or that have <=3 points) now get small endpoint dot markers at each data point, so a short anchor stub reads as the measured points it is rather than a stray line. The line itself still draws and no data is dropped or filtered.
Scope / risk
src/GrowthChart.jsx), +12 lines, presentation-only.npm run buildpasses.Alternative considered
Filtering sub-horizon stubs out of the trajectory lines entirely (keeping them in hover/ensemble). Not chosen here because it hides a model; this presentation fix keeps everything visible. Happy to switch to filtering if preferred.
Opened for review — not auto-merged.