feat: introduces the EditHeadlineStatusChanged event, which is necessary for the UI to communicate status changes to the EditHeadlineBloc. I am also taking this opportunity to modernize the event file by converting the base class to sealed and making the event classes final for better type safety and consistency.

Author: fulleni

lib/content_management/bloc/edit_headline/edit_headline_event.dart

@@ -1,68 +1,77 @@
 part of 'edit_headline_bloc.dart';
 
 /// Base class for all events related to the [EditHeadlineBloc].
-abstract class EditHeadlineEvent extends Equatable {
+sealed class EditHeadlineEvent extends Equatable {
   const EditHeadlineEvent();
 
   @override
   List<Object?> get props => [];
 }
 
 /// Event to signal that the headline data should be loaded.
-class EditHeadlineLoaded extends EditHeadlineEvent {
+final class EditHeadlineLoaded extends EditHeadlineEvent {
   const EditHeadlineLoaded();
 }
 
 /// Event for when the headline's title is changed.
-class EditHeadlineTitleChanged extends EditHeadlineEvent {
+final class EditHeadlineTitleChanged extends EditHeadlineEvent {
   const EditHeadlineTitleChanged(this.title);
   final String title;
   @override
-  List<Object> get props => [title];
+  List<Object?> get props => [title];
 }
 
 /// Event for when the headline's description is changed.
-class EditHeadlineDescriptionChanged extends EditHeadlineEvent {
+final class EditHeadlineDescriptionChanged extends EditHeadlineEvent {
   const EditHeadlineDescriptionChanged(this.description);
   final String description;
   @override
-  List<Object> get props => [description];
+  List<Object?> get props => [description];
 }
 
 /// Event for when the headline's URL is changed.
-class EditHeadlineUrlChanged extends EditHeadlineEvent {
+final class EditHeadlineUrlChanged extends EditHeadlineEvent {
   const EditHeadlineUrlChanged(this.url);
   final String url;
   @override
-  List<Object> get props => [url];
+  List<Object?> get props => [url];
 }
 
 /// Event for when the headline's image URL is changed.
-class EditHeadlineImageUrlChanged extends EditHeadlineEvent {
+final class EditHeadlineImageUrlChanged extends EditHeadlineEvent {
   const EditHeadlineImageUrlChanged(this.imageUrl);
   final String imageUrl;
   @override
-  List<Object> get props => [imageUrl];
+  List<Object?> get props => [imageUrl];
 }
 
 /// Event for when the headline's source is changed.
-class EditHeadlineSourceChanged extends EditHeadlineEvent {
+final class EditHeadlineSourceChanged extends EditHeadlineEvent {
   const EditHeadlineSourceChanged(this.source);
   final Source? source;
   @override
   List<Object?> get props => [source];
 }
 
 /// Event for when the headline's category is changed.
-class EditHeadlineCategoryChanged extends EditHeadlineEvent {
+final class EditHeadlineCategoryChanged extends EditHeadlineEvent {
   const EditHeadlineCategoryChanged(this.category);
   final Category? category;
   @override
   List<Object?> get props => [category];
 }
 
+/// Event for when the headline's status is changed.
+final class EditHeadlineStatusChanged extends EditHeadlineEvent {
+  const EditHeadlineStatusChanged(this.status);
+
+  final ContentStatus status;
+
+  @override
+  List<Object?> get props => [status];
+}
+
 /// Event to signal that the form should be submitted.
-class EditHeadlineSubmitted extends EditHeadlineEvent {
+final class EditHeadlineSubmitted extends EditHeadlineEvent {
   const EditHeadlineSubmitted();
 }
-