Dialog parity with Fusion: header with fold glyph, label column, Select/N selected chips, info glyph and OK greyed until valid, Fusion colours; Extrude rows Start (profile plane/offset), Direction (one side, two sides, symmetric), Extent Type (distance/all), Taper Angle; Hole rows Placement (single/multiple sketch points), Extents, Hole Tap Type (tapped size), Drill Point, Tip Angle; pattern Type switch; Mirror operation; pre-selection routes every item to the input that takes it (planar-only inputs, fillet tangent chains), with tests

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/ui-egui/src/selection.rs

@@ -23,6 +23,8 @@ pub const AXES: Accept = 64;
 pub const VERTICES: Accept = 128;
 /// Any sketch curve (a sweep path).
 pub const CURVES: Accept = 256;
+/// Sketch points of any visible sketch (hole centres); picked as "<sketch id>:<point id>".
+pub const POINTS: Accept = 512;
 
 /// One selection input of a command dialog ("Profiles", "Edges", "Plane", ...).
 #[derive(Clone, Debug, PartialEq)]
@@ -53,6 +55,7 @@ impl SelInput {
             Hit::Axis { name } if a & AXES != 0 => Some(Sel::Axis { name: name.clone() }),
             Hit::SketchCurve { id, straight: true, .. } if a & AXES != 0 => Some(Sel::SketchCurve { id: id.clone() }),
             Hit::SketchCurve { id, .. } if a & CURVES != 0 => Some(Sel::SketchCurve { id: id.clone() }),
+            Hit::SketchPoint { sketch, id, .. } if a & POINTS != 0 => Some(Sel::SketchPoint { id: format!("{sketch}:{id}") }),
             Hit::Vertex { body, point } if a & VERTICES != 0 => Some(Sel::Vertex { body: body.clone(), point: *point }),
             _ => None,
         }