feat(ground-suite): add system glass themes

ground-suite/lib/features/overview/presentation/overview_page.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../../observability/presentation/observability_controller.dart';
+import '../../../shared/widgets/glass_panel.dart';
 
 class OverviewPage extends ConsumerWidget {
   const OverviewPage({super.key});
@@ -78,7 +79,7 @@ class OverviewPage extends ConsumerWidget {
               ],
             ),
             const SizedBox(height: 24),
-            Card(
+            GlassPanel(
               child: Padding(
                 padding: const EdgeInsets.all(20),
                 child: Column(
@@ -125,7 +126,7 @@ class _SummaryCard extends StatelessWidget {
   Widget build(BuildContext context) {
     return SizedBox(
       width: width,
-      child: Card(
+      child: GlassPanel(
         child: Padding(
           padding: const EdgeInsets.all(20),
           child: Column(