chnages has been made and net salary is being displayed

lib/domain/usecases/get_salary_summary_usecase.dart

@@ -0,0 +1,20 @@
+import '../repositories/attendance_repository.dart';
+import '../models/salary_model.dart';
+
+class GetSalarySummaryUseCase {
+  final AttendanceRepository repository;
+
+  GetSalarySummaryUseCase(this.repository);
+
+  Future<SalaryModel> execute({
+    required String employeeId,
+    required int month,
+    required int year,
+  }) {
+    return repository.calculateSalary(
+      employeeId: employeeId,
+      month: month,
+      year: year,
+    );
+  }
+}