Delete for everything: selection.delete removes sketch entities, features and sketches (with their dependents), construction planes, bodies (Remove feature), occurrences and components, and canvases in one undo step, with a dry run; Delete/Backspace and every menu's Delete go through it and ask first, listing what goes with it and what would fail; faces say Delete Face is not available yet; ui.confirm control method

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

crates/ui-egui/src/control.rs

@@ -21,6 +21,7 @@
 //!   the open menu and its items. `ui.menuPick {item}` runs an item by id or label;
 //!   `ui.rename {text?, commit?}` finishes the rename box
 //! - `ui.window {action: minimize|maximize|restore|toggle|close}`: what the title bar's buttons do
+//! - `ui.confirm {accept?}`: the Delete confirmation (without `accept`: what it lists)
 //! - `ui.resize {width, height}`, `app.quit`
 
 use std::sync::mpsc::Sender;
@@ -267,6 +268,16 @@ pub fn handle(app: &mut SolveApp, ctx: &egui::Context, req: &ControlRequest) ->
             }
             ok(crate::context_menu::describe(app))
         }
+        "ui.confirm" => match p.get("accept").and_then(Value::as_bool) {
+            Some(a) => {
+                if crate::delete::confirm(app, a) {
+                    ok(json!({"accepted": a}))
+                } else {
+                    err("nothing is waiting for a confirmation")
+                }
+            }
+            None => ok(json!({"pending": app.menu.confirm.as_ref().map(|c| c.report.clone())})),
+        },
         "ui.menuPick" => {
             let Some(key) = s("item") else { return err("missing `item` (id or label)") };
             wrap(crate::context_menu::pick(app, key))