The axis reserved a fixed worst-case budget per tick (chars // 8, sized
for "Jul 12"), so short labels like bare day numbers were dropped even
where they had ample room — the 7 d window lost a day it could plainly
fit. Replace the estimate with _fit_ticks: step the tick count down from
every bar until an even subset actually clears the collision rule for the
labels it would draw, rebuilding the labels each try so bare "7" is
measured as one cell, not six. Both ends stay annotated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 4.8
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