Hold Shift to momentarily enable the pipette (restores prior state on
release) and Shift+Scroll to resize the brush. The orbit zoom ignores the
wheel while Shift is held so it does not zoom and resize at once. The HUD
brush-size slider follows live via a BrushSizeChanged event, and the brush
preview now stays visible while Shift is held (drawn before the pipette
early-return) so the new size is visible while scrubbing.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>