fix: Added SquareAvatar.

packages/katana_ui/example/pubspec.lock

@@ -353,14 +353,14 @@ packages:
       path: "../../katana"
       relative: true
     source: path
-    version: "2.4.1"
+    version: "2.4.2"
   katana_ui:
     dependency: "direct main"
     description:
       path: ".."
       relative: true
     source: path
-    version: "2.4.5"
+    version: "2.5.2"
   lints:
     dependency: transitive
     description:

packages/katana_ui/lib/katana_ui.dart

@@ -31,3 +31,4 @@ part 'ui/periodic_scope.dart';
 part 'ui/chat_tile.dart';
 part 'ui/shimmer.dart';
 part 'ui/avatar_tile.dart';
+part 'ui/square_avatar.dart';

packages/katana_ui/lib/ui/square_avatar.dart

@@ -0,0 +1,53 @@
+part of katana_ui;
+
+/// Square version of [CircleAvatar].
+///
+/// Can be used in place of [CircleAvatar].
+///
+/// 四角版の[CircleAvatar]。
+///
+/// [CircleAvatar]の代わりに使用できます。
+class SquareAvatar extends StatelessWidget {
+  /// Square version of [CircleAvatar].
+  ///
+  /// Can be used in place of [CircleAvatar].
+  ///
+  /// 四角版の[CircleAvatar]。
+  ///
+  /// [CircleAvatar]の代わりに使用できます。
+  const SquareAvatar({
+    super.key,
+    this.radius,
+    this.backgroundColor,
+    this.backgroundImage,
+  });
+
+  /// Rounded corners.
+  ///
+  /// 角丸。
+  final double? radius;
+
+  /// Background color.
+  ///
+  /// 背景色。
+  final Color? backgroundColor;
+
+  /// Background image.
+  ///
+  /// 背景画像。
+  final ImageProvider<Object>? backgroundImage;
+
+  @override
+  Widget build(BuildContext context) {
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(radius ?? 0),
+      child: Stack(
+        fit: StackFit.expand,
+        children: [
+          if (backgroundImage != null) Image(image: backgroundImage!),
+          if (backgroundColor != null) ColoredBox(color: backgroundColor!),
+        ],
+      ),
+    );
+  }
+}

packages/katana_ui/pubspec.lock

@@ -204,7 +204,7 @@ packages:
       path: "../katana"
       relative: true
     source: path
-    version: "2.4.1"
+    version: "2.4.3"
   lints:
     dependency: transitive
     description: