refactor(overview): rename DashboardBloc to OverviewBloc

- Renamed DashboardBloc to OverviewBloc for better alignment with the
  overall structure and naming conventions of the app.
- Updated related files and references to reflect the new name.
- Changed event and state classes to use the new Overview prefix.
- Updated the data loading status enum to reflect the new bloc name.

Author: fulleni

lib/app/view/app.dart

@@ -118,7 +118,7 @@ class App extends StatelessWidget {
             )..add(const SharedDataRequested()),
           ),
           BlocProvider(
-            create: (context) => DashboardBloc(
+            create: (context) => OverviewBloc(
               dashboardSummaryRepository: context
                   .read<DataRepository<DashboardSummary>>(),
               headlinesRepository: context.read<DataRepository<Headline>>(),

lib/overview/bloc/overview_bloc.dart

@@ -9,24 +9,24 @@ import 'package:stream_transform/stream_transform.dart';
 part 'overview_event.dart';
 part 'overview_state.dart';
 
-/// A BLoC to manage the state of the dashboard.
-class DashboardBloc extends Bloc<DashboardEvent, DashboardState> {
-  /// {@macro dashboard_bloc}
-  DashboardBloc({
+/// A BLoC to manage the state of the dashboard overview.
+class OverviewBloc extends Bloc<OverviewEvent, OverviewState> {
+  /// {@macro overview_bloc}
+  OverviewBloc({
     required DataRepository<DashboardSummary> dashboardSummaryRepository,
     required DataRepository<Headline> headlinesRepository,
     required DataRepository<Topic> topicsRepository,
     required DataRepository<Source> sourcesRepository,
   }) : _dashboardSummaryRepository = dashboardSummaryRepository,
        _headlinesRepository = headlinesRepository,
-       super(const DashboardState()) {
-    on<DashboardSummaryRequested>(_onDashboardSummaryRequested);
-    on<_DashboardEntityUpdated>(_onDashboardEntityUpdated);
+       super(const OverviewState()) {
+    on<OverviewSummaryRequested>(_onOverviewSummaryRequested);
+    on<_OverviewEntityUpdated>(__onOverviewEntityUpdated);
 
     _entityUpdatedSubscription = headlinesRepository.entityUpdated
         .merge(topicsRepository.entityUpdated)
         .merge(sourcesRepository.entityUpdated)
-        .listen((_) => add(const _DashboardEntityUpdated()));
+        .listen((_) => add(const _OverviewEntityUpdated()));
   }
 
   final DataRepository<DashboardSummary> _dashboardSummaryRepository;
@@ -39,18 +39,18 @@ class DashboardBloc extends Bloc<DashboardEvent, DashboardState> {
     return super.close();
   }
 
-  void _onDashboardEntityUpdated(
-    _DashboardEntityUpdated event,
-    Emitter<DashboardState> emit,
+  void __onOverviewEntityUpdated(
+    _OverviewEntityUpdated event,
+    Emitter<OverviewState> emit,
   ) {
-    add(DashboardSummaryRequested());
+    add(OverviewSummaryRequested());
   }
 
-  Future<void> _onDashboardSummaryRequested(
-    DashboardSummaryRequested event,
-    Emitter<DashboardState> emit,
+  Future<void> _onOverviewSummaryRequested(
+    OverviewSummaryRequested event,
+    Emitter<OverviewState> emit,
   ) async {
-    emit(state.copyWith(status: DashboardStatus.loading));
+    emit(state.copyWith(status: OverviewStatus.loading));
     try {
       // Fetch summary and recent headlines concurrently
       final [summaryResponse, recentHeadlinesResponse] = await Future.wait([
@@ -67,17 +67,17 @@ class DashboardBloc extends Bloc<DashboardEvent, DashboardState> {
           (recentHeadlinesResponse as PaginatedResponse<Headline>).items;
       emit(
         state.copyWith(
-          status: DashboardStatus.success,
+          status: OverviewStatus.success,
           summary: summary,
           recentHeadlines: recentHeadlines,
         ),
       );
     } on HttpException catch (e) {
-      emit(state.copyWith(status: DashboardStatus.failure, exception: e));
+      emit(state.copyWith(status: OverviewStatus.failure, exception: e));
     } catch (e) {
       emit(
         state.copyWith(
-          status: DashboardStatus.failure,
+          status: OverviewStatus.failure,
           exception: UnknownException('An unknown error occurred: $e'),
         ),
       );

lib/overview/bloc/overview_event.dart

@@ -1,17 +1,17 @@
 part of 'overview_bloc.dart';
 
-/// Base class for dashboard events.
-sealed class DashboardEvent extends Equatable {
-  const DashboardEvent();
+/// Base class for dashboard overviews events.
+sealed class OverviewEvent extends Equatable {
+  const OverviewEvent();
 
   @override
   List<Object> get props => [];
 }
 
-/// Event to load the dashboard summary data.
-final class DashboardSummaryRequested extends DashboardEvent {}
+/// Event to load the dashboard overview summary data.
+final class OverviewSummaryRequested extends OverviewEvent {}
 
 /// Internal event triggered when a listened-to entity is updated.
-final class _DashboardEntityUpdated extends DashboardEvent {
-  const _DashboardEntityUpdated();
+final class _OverviewEntityUpdated extends OverviewEvent {
+  const _OverviewEntityUpdated();
 }

lib/overview/bloc/overview_state.dart

@@ -1,7 +1,7 @@
 part of 'overview_bloc.dart';
 
-/// Represents the status of the dashboard data loading.
-enum DashboardStatus {
+/// Represents the status of the dashboard overview data loading.
+enum OverviewStatus {
   /// Initial state.
   initial,
 
@@ -15,27 +15,27 @@ enum DashboardStatus {
   failure,
 }
 
-/// The state for the [DashboardBloc].
-final class DashboardState extends Equatable {
-  const DashboardState({
-    this.status = DashboardStatus.initial,
+/// The state for the [OverviewBloc].
+final class OverviewState extends Equatable {
+  const OverviewState({
+    this.status = OverviewStatus.initial,
     this.summary,
     this.recentHeadlines = const [],
     this.exception,
   });
 
-  final DashboardStatus status;
+  final OverviewStatus status;
   final DashboardSummary? summary;
   final List<Headline> recentHeadlines;
   final HttpException? exception;
 
-  DashboardState copyWith({
-    DashboardStatus? status,
+  OverviewState copyWith({
+    OverviewStatus? status,
     DashboardSummary? summary,
     List<Headline>? recentHeadlines,
     HttpException? exception,
   }) {
-    return DashboardState(
+    return OverviewState(
       status: status ?? this.status,
       summary: summary ?? this.summary,
       recentHeadlines: recentHeadlines ?? this.recentHeadlines,

lib/overview/view/overview_page.dart

@@ -23,33 +23,32 @@ class _OverviewPageState extends State<OverviewPage> {
   void initState() {
     super.initState();
     // Dispatch the event to load dashboard data when the page is initialized.
-    context.read<DashboardBloc>().add(DashboardSummaryRequested());
+    context.read<OverviewBloc>().add(OverviewSummaryRequested());
   }
 
   @override
   Widget build(BuildContext context) {
     final l10n = AppLocalizationsX(context).l10n;
     return Scaffold(
-      body: BlocBuilder<DashboardBloc, DashboardState>(
+      body: BlocBuilder<OverviewBloc, OverviewState>(
         builder: (context, state) {
-          if (state.status == DashboardStatus.loading ||
-              state.status == DashboardStatus.initial) {
+          if (state.status == OverviewStatus.loading ||
+              state.status == OverviewStatus.initial) {
             return LoadingStateWidget(
               icon: Icons.dashboard_outlined,
               headline: l10n.loadingDashboard,
               subheadline: l10n.loadingDashboardSubheadline,
             );
           }
-          if (state.status == DashboardStatus.failure) {
+          if (state.status == OverviewStatus.failure) {
             return FailureStateWidget(
               exception: state.exception!,
               onRetry: () {
-                context.read<DashboardBloc>().add(DashboardSummaryRequested());
+                context.read<OverviewBloc>().add(OverviewSummaryRequested());
               },
             );
           }
-          if (state.status == DashboardStatus.success &&
-              state.summary != null) {
+          if (state.status == OverviewStatus.success && state.summary != null) {
             final summary = state.summary!;
             final recentHeadlines = state.recentHeadlines;
             return ListView(