consolidate logic

shell/Ui/BarWidget.qml

@@ -0,0 +1,17 @@
+import QtQuick
+
+// Base item every bar widget extends. Codifies the three properties the
+// bar host injects into each widget slot:
+//   bar         - the host Bar instance (foreground/background/run/etc).
+//   moduleName  - widget's canonical id, used by the host registry to look
+//                 up settings and to disambiguate inline IPC routes.
+//   settings    - per-widget overrides read from shell.json's layout entry.
+//
+// Widgets are free to add their own properties, signals, and child items.
+Item {
+  id: root
+
+  property QtObject bar: null
+  property string moduleName: ""
+  property var settings: ({})
+}