fix(bar): defer update to next cycle

Modules/Bar/Bar.qml

@@ -142,13 +142,18 @@ Item {
     }
   }
 
-  // Initialize models — deferred to next event-loop tick via Qt.callLater to avoid
-  // re-entrant incubation: Component.onCompleted fires during QQmlObjectCreator::finalize,
+  // Initialize models — deferred via Timer (Qt.callLater can fire in same event cycle)
+  // to avoid re-entrant incubation: Component.onCompleted fires during finalization,
   // and ListModel.append synchronously creates Repeater delegates whose own finalization
   // can corrupt the V4 heap (SIGSEGV in QV4::Object::insertMember).
+  Timer {
+    id: initModelsTimer
+    interval: 0
+    onTriggered: root._initModels()
+  }
   Component.onCompleted: {
     Logger.d("Bar", "Bar Component.onCompleted for screen:", screen?.name);
-    Qt.callLater(root._initModels);
+    initModelsTimer.restart();
   }
 
   function _initModels() {