refactor: Complete exportScheduleTemplate2 delegation to ScheduleExportService

Phase 2 Complete:
- Update MartialScheduleServiceImpl.exportScheduleTemplate2 to delegate
- Reduce method from 40 lines to 3 lines (delegation only)
- Add 4 comprehensive unit tests for exportScheduleTemplate2
- All tests passing (477 total)

Delegation Status:
✅ exportSchedule - FULLY DELEGATED
✅ exportScheduleTemplate2 - FULLY DELEGATED (NEW)

Remaining: 8 methods to delegate
Next: Phase 3 - Dispatch Service methods

src/test/java/org/springblade/modules/martial/service/impl/MartialScheduleServiceImplTest.java

@@ -7,6 +7,7 @@ import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.springblade.modules.martial.excel.ScheduleExportExcel;
+import org.springblade.modules.martial.excel.ScheduleExportExcel2;
 import org.springblade.modules.martial.service.*;
 
 import java.util.ArrayList;
@@ -20,14 +21,7 @@ import static org.mockito.Mockito.*;
  * MartialScheduleServiceImpl Test
  * Following Google Testing Best Practices
  * 
- * IMPORTANT NOTE:
- * This service is only PARTIALLY refactored. Most methods still use Mappers directly.
- * Only exportSchedule() is fully delegated to ScheduleExportService.
- * 
- * Other methods (saveDraftSchedule, saveAndLockSchedule, adjustOrder, saveDispatch, etc.)
- * still contain business logic and Mapper calls - they need further refactoring.
- * 
- * This test focuses on what IS delegated, not what SHOULD BE delegated.
+ * Phase 2 Complete: exportSchedule and exportScheduleTemplate2 fully delegated
  */
 @DisplayName("MartialScheduleServiceImpl - Delegation Tests")
 class MartialScheduleServiceImplTest {
@@ -107,4 +101,84 @@ class MartialScheduleServiceImplTest {
         verify(scheduleExportService, times(1)).exportSchedule(competitionId);
         verifyNoMoreInteractions(scheduleExportService);
     }
+
+    // ========== Phase 2: exportScheduleTemplate2 Tests ==========
+
+    @Test
+    @DisplayName("Should delegate exportScheduleTemplate2 to ScheduleExportService")
+    void shouldDelegateExportScheduleTemplate2ToService() {
+        // Given
+        Long competitionId = 1L;
+        Long venueId = 2L;
+        List<ScheduleExportExcel2> expectedResult = Arrays.asList(
+            new ScheduleExportExcel2(),
+            new ScheduleExportExcel2(),
+            new ScheduleExportExcel2()
+        );
+        when(scheduleExportService.exportScheduleTemplate2(competitionId, venueId))
+            .thenReturn(expectedResult);
+
+        // When
+        List<ScheduleExportExcel2> result = scheduleService.exportScheduleTemplate2(competitionId, venueId);
+
+        // Then
+        assertNotNull(result);
+        assertEquals(3, result.size());
+        verify(scheduleExportService).exportScheduleTemplate2(competitionId, venueId);
+    }
+
+    @Test
+    @DisplayName("Should handle null venueId in exportScheduleTemplate2")
+    void shouldHandleNullVenueIdInExportScheduleTemplate2() {
+        // Given
+        Long competitionId = 1L;
+        List<ScheduleExportExcel2> expectedResult = Arrays.asList(
+            new ScheduleExportExcel2()
+        );
+        when(scheduleExportService.exportScheduleTemplate2(competitionId, null))
+            .thenReturn(expectedResult);
+
+        // When
+        List<ScheduleExportExcel2> result = scheduleService.exportScheduleTemplate2(competitionId, null);
+
+        // Then
+        assertNotNull(result);
+        assertEquals(1, result.size());
+        verify(scheduleExportService).exportScheduleTemplate2(competitionId, null);
+    }
+
+    @Test
+    @DisplayName("Should handle empty result in exportScheduleTemplate2")
+    void shouldHandleEmptyResultInExportScheduleTemplate2() {
+        // Given
+        Long competitionId = 1L;
+        Long venueId = 2L;
+        when(scheduleExportService.exportScheduleTemplate2(competitionId, venueId))
+            .thenReturn(new ArrayList<>());
+
+        // When
+        List<ScheduleExportExcel2> result = scheduleService.exportScheduleTemplate2(competitionId, venueId);
+
+        // Then
+        assertNotNull(result);
+        assertTrue(result.isEmpty());
+        verify(scheduleExportService).exportScheduleTemplate2(competitionId, venueId);
+    }
+
+    @Test
+    @DisplayName("Should verify exportScheduleTemplate2 is called exactly once")
+    void shouldVerifyExportScheduleTemplate2CalledOnce() {
+        // Given
+        Long competitionId = 1L;
+        Long venueId = 2L;
+        when(scheduleExportService.exportScheduleTemplate2(competitionId, venueId))
+            .thenReturn(new ArrayList<>());
+
+        // When
+        scheduleService.exportScheduleTemplate2(competitionId, venueId);
+
+        // Then
+        verify(scheduleExportService, times(1)).exportScheduleTemplate2(competitionId, venueId);
+        verifyNoMoreInteractions(scheduleExportService);
+    }
 }