Angular dimension drawing: ray-based three-point frame, text beside the arc

Three-point angular dimensions take their sweep from the two rays and the
arc point (extension lines follow their own rays, straight and reflex
angles draw), dynamic angular dimensions store no text point so DIMTAD
places the text beside an unbroken arc, and dynamic dimensions carry a
DIMGAP override of a quarter text height.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

src/modules/annotate/angular_dim.rs

@@ -1205,7 +1205,8 @@ pub(crate) fn angular_two_line_entity(
     dim.definition_point = v3(second_end);
     dim.dimension_arc = v3(arc_point);
     dim.base.definition_point = dim.definition_point;
-    dim.base.text_middle_point = dim.dimension_arc;
+    // No stored text point: the style places the text (DIMTAD) beside the
+    // arc at render time, as the reference draws a dynamic dimension.
     dim.base.insertion_point = dim.dimension_arc;
     dim.base.actual_measurement = dim.measurement_degrees();
     crate::entities::dimension::set_dimension_text_override(&mut dim.base, text);
@@ -1224,7 +1225,7 @@ pub(crate) fn angular_three_point_entity(
     let mut dim = DimensionAngular3Pt::new(v3(vertex), v3(first), v3(second));
     dim.definition_point = v3(arc_point);
     dim.base.definition_point = dim.definition_point;
-    dim.base.text_middle_point = dim.definition_point;
+    dim.base.text_middle_point = Vector3::new(0.0, 0.0, 0.0);
     dim.base.insertion_point = dim.definition_point;
     dim.base.actual_measurement = dim.measurement_degrees();
     crate::entities::dimension::set_dimension_text_override(&mut dim.base, text);