feat: Refactor code structure and optimize performance across multiple modules

mobile-apps/client-app/lib/features/assigned_staff_screen/domain/assigned_staff_bloc.dart

@@ -0,0 +1,15 @@
+import 'package:bloc/bloc.dart';
+import 'package:krow/core/entity/staff_contact_entity.dart';
+import 'package:meta/meta.dart';
+
+part 'assigned_staff_event.dart';
+part 'assigned_staff_state.dart';
+
+class AssignedStaffBloc extends Bloc<AssignedStaffEvent, AssignedStaffState> {
+  AssignedStaffBloc(
+      {required List<StaffContact> staffContacts, required String department})
+      : super(AssignedStaffState(
+          staffContacts: staffContacts,
+          department: department,
+        )) {}
+}

mobile-apps/client-app/lib/features/assigned_staff_screen/domain/assigned_staff_event.dart

@@ -0,0 +1,4 @@
+part of 'assigned_staff_bloc.dart';
+
+@immutable
+sealed class AssignedStaffEvent {}

mobile-apps/client-app/lib/features/assigned_staff_screen/domain/assigned_staff_state.dart

@@ -0,0 +1,23 @@
+part of 'assigned_staff_bloc.dart';
+
+@immutable
+class AssignedStaffState {
+  final List<StaffContact> staffContacts;
+  final String department;
+  final bool inLoading;
+
+  const AssignedStaffState({required this.staffContacts, required this.department,  this.inLoading = false});
+
+  copyWith({
+    List<StaffContact>? staffContacts,
+    String? department,
+    bool? canManualAssign,
+    bool? inLoading,
+  }) {
+    return AssignedStaffState(
+      staffContacts: staffContacts ?? this.staffContacts,
+      department: department ?? this.department,
+      inLoading: inLoading ?? this.inLoading,
+    );
+  }
+}