first implementation finished

app/lib/domain/entities/received_parameter.dart

@@ -0,0 +1,6 @@
+class ReceivedParameter {
+  final String? content;
+  final String? tool;
+
+  ReceivedParameter(this.content, this.tool);
+}

app/lib/domain/entities/web_page_info.dart

@@ -0,0 +1,32 @@
+import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+
+class WebPageInfo {
+  final Uri url;
+  final String? title;
+  final Favicon? favicon;
+
+  WebPageInfo({
+    required this.url,
+    required this.title,
+    required this.favicon,
+  });
+
+  factory WebPageInfo.fromJson(Map<String, dynamic> json) {
+    return WebPageInfo(
+      url: Uri.parse(json['url'] as String),
+      title: json['title'] as String?,
+      favicon: switch (json['favicon']) {
+        final Map<String, dynamic> favicon => Favicon.fromMap(favicon),
+        _ => null
+      },
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'url': url.toString(),
+      'title': title,
+      'favicon': favicon?.toJson(),
+    };
+  }
+}