- labels now sit on the week CONTAINING the 1st of the month (old
logic labelled the first column starting in that month, so a month
beginning mid-week was labelled a whole column late — hovering the
cells under 'Aug' showed Jul dates); skip labels that would crowd
the previous one
- label + grid rows are inline-flex so flexbox shrink can't drift
them apart at narrow widths
- cell scale back to the orange accent (color-mix of --acc)
jozamudi
36be7d0a02