fix(ViewCube): WCS dropdown no longer appears to clip view cube

- enlarged render area for the viewcube container, and increased the gap between cube region and WCS dropdown

src/app/view/mod.rs

@@ -1162,7 +1162,7 @@ impl OpenCADStudio {
                 )))
                 .position(iced::Point::new(
                         cube_x + VIEWCUBE_HIT_SIZE * 0.5 - UCS_PICKER_W * 0.5,
-                        cube_y + VIEWCUBE_HIT_SIZE + 6.0,
+                        cube_y + VIEWCUBE_HIT_SIZE + 10.0,
                     ));
                 viewport_stack = viewport_stack.push(picker);
             }
@@ -1202,7 +1202,7 @@ impl OpenCADStudio {
             )))
             .position(iced::Point::new(
                     cube_x + VIEWCUBE_HIT_SIZE * 0.5 - UCS_PICKER_W * 0.5,
-                    cube_y + VIEWCUBE_HIT_SIZE + 6.0,
+                    cube_y + VIEWCUBE_HIT_SIZE + 10.0,
                 ));
             viewport_stack = viewport_stack.push(picker);
         }

src/scene/pipeline/viewcube.rs

@@ -38,7 +38,7 @@ pub const VIEWCUBE_PAD: f32 = 12.0;
 pub const NAV_INSET_F: f32 = 2.0;
 /// Side of the whole nav widget (cube + compass ring + controls) in pixels.
 pub const VIEWCUBE_REGION_PX: f32 = VIEWCUBE_DRAW_PX * NAV_INSET_F;
-pub const VIEWCUBE_RENDER_PX: f32 = VIEWCUBE_REGION_PX + 8.0;
+pub const VIEWCUBE_RENDER_PX: f32 = VIEWCUBE_REGION_PX + 20.0;
 /// Z height of the compass ring + cardinals in cube-local space. The cube
 /// spans ±1, so −1 parks the ring at the cube's base — it sits *under* the
 /// cube in 3D views and reads as a ground compass.