PresetButtonGrid rendered every preset set into a fixed 4-column
.preset-grid, so 5-item sets (RADIUS_PRESETS, SPACING_PRESETS,
IMAGE_RADIUS_PRESETS, FONT_WEIGHTS, NavStylePanel's GAP_PRESETS)
wrapped a single lone button onto its own row, and the 6-item
TEXT_SIZES split unevenly (4+2).
PresetButtonGrid now derives a column count from presets.length via
defaultPresetGridColumns() -- 5-item sets get a single row of 5,
6-item sets split into two even rows of 3, and anything else keeps
the classic 4-column grid -- with an optional `columns` prop for
explicit overrides. This fixes every existing call site automatically
rather than threading an explicit count through each one.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
shadowdao
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