Patterns of features: Object Type (Bodies / Features) in the rectangular, circular and path pattern dialogs; features are picked in the timeline (or pre-selected there), so a hole can be patterned with a live preview; Edit Feature shows a pattern of holes as features

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

crates/ui-egui/src/selection.rs

@@ -25,6 +25,8 @@ pub const VERTICES: Accept = 128;
 pub const CURVES: Accept = 256;
 /// Sketch points of any visible sketch (hole centres); picked as "<sketch id>:<point id>".
 pub const POINTS: Accept = 512;
+/// Timeline features (pattern objects), picked in the timeline.
+pub const FEATURES: Accept = 1024;
 
 /// One selection input of a command dialog ("Profiles", "Edges", "Plane", ...).
 #[derive(Clone, Debug, PartialEq)]