Color Grading gets 3-Way / Shadows / Midtones / Highlights tabs (3-Way by
default). 3-Way shows three equal wheels; a range tab shows one large wheel
with that range's Hue, Saturation and Luminance sliders. Blending and Balance
are in every tab.
Precision (#559):
- Shift-drag on a wheel locks the hue and changes saturation only; the whole
spoke is drawn as a guide. Shift can be pressed or released mid-drag.
- A white dot marks each wheel's neutral centre.
- The large wheel has dashed 25/50/75 % saturation rings.
- 3-Way shows the hovered wheel's hue and saturation above it.
Each wheel has an eye (bottom-left, on hover) that hides its effect for
viewing only: RenderJob::with_hidden_grading renders those wheels neutral
under their own key, never cached as the photo's preview. Not an edit, not
saved, reset on another photo; export is unaffected.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
