Preserve diagram focus across edits, history and passive saves

crates/oa-desktop/src/behavior/canvas_workspace.rs

@@ -10,8 +10,12 @@ pub use control::Control;
 pub use viewport::Viewport;
 
 pub fn keyboard_enabled(app: &crate::app::App) -> bool {
-    !app.busy
-        && !app.hosted.visible
+    !app.busy && keyboard_owner_enabled(app)
+}
+
+/// Passive I/O suspends commands without changing the logical input owner.
+pub(crate) fn keyboard_owner_enabled(app: &crate::app::App) -> bool {
+    !app.hosted.visible
         && app.workflow.is_none()
         && app.file_prompt.is_none()
         && !app.delete_pending

crates/oa-desktop/src/behavior/state_view.rs

@@ -176,7 +176,8 @@ pub fn view<'a>(app: &'a App, machine: Id, mut out: Column<'a, Message>) -> Elem
     out = out.push(crate::diagram::focus::wrap(
         canvas.map(event),
         context,
-        crate::app::diagram_removal::enabled(app),
+        crate::app::diagram_removal::focus_enabled(app),
+        app.busy,
         Message::DiagramTraverse,
     ));
     let base: Element<'_, Message> = container(out.spacing(8))