♻️ Re-designed bottom nav

lib/services/event_bus.dart

@@ -0,0 +1,13 @@
+import 'package:event_bus/event_bus.dart';
+
+/// Global event bus instance for the application
+final eventBus = EventBus();
+
+/// Event fired when a post is successfully created
+class PostCreatedEvent {
+  final String? postId;
+  final String? title;
+  final String? content;
+
+  const PostCreatedEvent({this.postId, this.title, this.content});
+}