✨ Large screen sidebar

lib/widgets/sidebar/sidebar_placeholder.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+
+class SidebarPlaceholder extends StatelessWidget {
+  const SidebarPlaceholder({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Container(
+        constraints: const BoxConstraints(maxWidth: 280),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(Icons.menu_open, size: 48),
+            const SizedBox(height: 8),
+            Text('sidebarPlaceholder'.tr, textAlign: TextAlign.center),
+          ],
+        ),
+      ),
+    );
+  }
+}