ColorPicker is a swatch button that opens a popup picker built from
anchored+deferred: an SV square (layered linear gradients over the hue) and
a 48-segment hue strip, both click- and drag-editable, plus RGBA spinboxes
reusing the SpinBox control. Pure HsvColor math (hue wrapping, saturation/
value extremes, u8 conversion) is unit-tested; an interaction test verifies
clicking the SV square emits ColorChanged. The eyedropper is a placeholder.
55 tests pass.
Mike-Solar
25b3167162