feat: render particle clouds for selected tags

lib/features/floorplan/widgets/floor_plan_editor.dart

@@ -181,6 +181,7 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
       final payload = jsonEncode(
         particles.map((p) => {'x': p.x, 'y': p.y, 'weight': p.weight}).toList(),
       );
+
       await _controller.runJavaScript('window.companion.updateCloud($payload)');
     });
   }