Add app source and tests

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

lib/Peach/see/health/Health.dart

@@ -0,0 +1,14 @@
+import 'package:flutter/cupertino.dart';
+
+import '../../about/internal/application/ServerProfile.dart';
+import 'HealthState.dart';
+
+/// Live health dashboard across all servers and their services.
+class Health extends StatefulWidget {
+  final List<ServerProfile> servers;
+
+  const Health({super.key, required this.servers});
+
+  @override
+  State<Health> createState() => HealthState();
+}