Fix analyzer issues after merge (deprecated Matrix4 methods, avoid_print).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: aloisdeniel

packages/flutter_omarchy/example/lib/gallery.dart

@@ -724,7 +724,7 @@ class _WidgetsPageState extends State<WidgetsPage> {
                                       icon: Icon(OmarchyIcons.codFilePdf),
                                       title: Text('Subchild 2'),
                                       onTap: () {
-                                        print('Tapped subchild 2');
+                                        debugPrint('Tapped subchild 2');
                                       },
                                     ),
                                     OmarchyTreeNode(

packages/flutter_omarchy/lib/src/widgets/pop_over.dart

@@ -284,8 +284,13 @@ class _OmarchyPopOverAnimationState extends State<OmarchyPopOverAnimation> {
         duration: const Duration(milliseconds: 120),
         transformAlignment: Alignment.center,
         transform: Matrix4.identity()
-          ..translate(0.0, isShowing ? 0.0 : -10.0)
-          ..scale(isShowing ? 1.0 : 0.98),
+          ..translateByDouble(0.0, isShowing ? 0.0 : -10.0, 0.0, 1.0)
+          ..scaleByDouble(
+            isShowing ? 1.0 : 0.98,
+            isShowing ? 1.0 : 0.98,
+            isShowing ? 1.0 : 0.98,
+            1.0,
+          ),
         curve: Curves.easeInOut,
         onEnd: () {
           if (isShowing == false) {