Azimuthal ROIs now show discrete grab handles on the selected ROI: the
inner/outer arc (resize Q/d) and, for a sector, the two phi edges
(rotate). Editing is by clicking a handle, with a generous tolerance,
which fixes the previously near-impossible phi-edge grab. Clicking the
(large) interior of an azimuthal ROI now only selects it and lets the
view pan, instead of capturing the gesture.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>