Add app source and tests

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

lib/Peach/see/service/ServiceEditor.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/cupertino.dart';
+
+import '../../about/internal/application/ServiceConfig.dart';
+import 'ServiceEditorState.dart';
+
+/// Edits a single service belonging to a server (jar service, web app or a
+/// generic binary).
+class ServiceEditor extends StatefulWidget {
+  /// null = create new.
+  final ServiceConfig? service;
+
+  const ServiceEditor({super.key, this.service});
+
+  @override
+  State<ServiceEditor> createState() => ServiceEditorState();
+}