Selection feedback and origin: hover and selected highlights (theme tokens), origin planes/axes/point at a fixed screen size with browser eye toggles, click-to-pick sketch planes and faces with camera animation (Finish Sketch returns), multi-select dialog inputs with pre-selection, tangent chains and face-to-edges, window/crossing box selection, shell/draft/mirror/hole dialogs

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

crates/engine/src/lib.rs

@@ -99,6 +99,19 @@ pub enum Sel {
         sketch: u64,
         index: usize,
     },
+    /// An origin plane (XY, XZ, YZ) or a construction plane (by feature name).
+    Plane {
+        name: String,
+    },
+    /// An origin axis (X, Y, Z).
+    Axis {
+        name: String,
+    },
+    /// A body vertex at a point.
+    Vertex {
+        body: String,
+        point: Vec3,
+    },
 }
 
 /// One undo step.