imporved app bar; added quick actions;

app/lib/features/search_browser/domain/entities/modes.dart

@@ -1,8 +1,15 @@
+import 'package:flutter/widgets.dart';
+import 'package:flutter_material_design_icons/flutter_material_design_icons.dart';
+
 enum KagiTool {
-  search,
-  summarizer,
+  search(MdiIcons.searchWeb),
+  summarizer(MdiIcons.text),
   //Sort early access features last
-  assistant,
+  assistant(MdiIcons.brain);
+
+  final IconData icon;
+
+  const KagiTool(this.icon);
 }
 
 enum AssistantMode {

app/lib/features/search_browser/domain/entities/sheet.dart

@@ -1,6 +1,8 @@
 import 'package:bang_navigator/features/search_browser/domain/entities/modes.dart';
+import 'package:fast_equatable/fast_equatable.dart';
 
-sealed class Sheet {}
+// ignore: missing_override_of_must_be_overridden
+sealed class Sheet with FastEquatable {}
 
 class CreateTab extends Sheet {
   final String? content;
@@ -9,6 +11,18 @@ class CreateTab extends Sheet {
   bool get hasParameters => content != null || preferredTool != null;
 
   CreateTab({this.content, this.preferredTool});
+
+  @override
+  bool get cacheHash => true;
+
+  @override
+  List<Object?> get hashParameters => [content, preferredTool];
 }
 
-class ViewTabs extends Sheet {}
+class ViewTabs extends Sheet {
+  @override
+  bool get cacheHash => true;
+
+  @override
+  List<Object?> get hashParameters => [];
+}