refactor: remove residual campus and department fields

apps/server/src/schedules/dto/schedule.dto.spec.ts

@@ -27,3 +27,21 @@ describe('schedule notes validation', () => {
     expect(errors.some((error) => error.property === 'notes')).toBe(true);
   });
 });
+
+it('removes the retired departmentId field from create requests', async () => {
+  const dto = Object.assign(new CreateScheduleDto(), {
+    classId: 1,
+    classroomId: 2,
+    weekDay: 1,
+    startTime: '09:00',
+    endTime: '10:00',
+    startDate: '2026-07-01',
+    endDate: '2026-07-31',
+    subject: '语文',
+    departmentId: 99,
+  });
+
+  await validate(dto, { whitelist: true });
+
+  expect(dto).not.toHaveProperty('departmentId');
+});

apps/server/src/schedules/dto/schedule.dto.ts

@@ -63,9 +63,6 @@ export class CreateScheduleDto {
   @MaxLength(500)
   notes?: string;
 
-  @IsOptional()
-  @IsInt()
-  departmentId?: number;
 }
 
 export class UpdateScheduleDto {