feat: improve attendance scheduling and API validation

apps/admin/src/pages/Schedules/schedule-form.ts

@@ -7,6 +7,7 @@ export interface ScheduleFormValues {
   subject: string;
   teacherId?: number;
   notes?: string;
+  attendanceAdvanceMinutes: number;
   timeRange: [Dayjs, Dayjs];
   dateRange: [Dayjs, Dayjs];
 }
@@ -19,6 +20,7 @@ export interface EditableSchedule {
   subject: string;
   teacherId: number | null;
   notes?: string | null;
+  attendanceAdvanceMinutes?: number | null;
   startTime: string;
   endTime: string;
   startDate: string;
@@ -32,6 +34,7 @@ export const scheduleToFormValues = (schedule: EditableSchedule): ScheduleFormVa
   subject: schedule.subject,
   teacherId: schedule.teacherId ?? undefined,
   notes: schedule.notes ?? undefined,
+  attendanceAdvanceMinutes: schedule.attendanceAdvanceMinutes ?? 30,
   timeRange: [dayjs(`2000-01-01 ${schedule.startTime}`), dayjs(`2000-01-01 ${schedule.endTime}`)],
   dateRange: [dayjs(schedule.startDate), dayjs(schedule.endDate)],
 });
@@ -43,6 +46,7 @@ export const buildSchedulePayload = (values: ScheduleFormValues) => ({
   subject: values.subject,
   teacherId: values.teacherId,
   notes: values.notes?.trim() || undefined,
+  attendanceAdvanceMinutes: values.attendanceAdvanceMinutes,
   startTime: values.timeRange[0].format('HH:mm'),
   endTime: values.timeRange[1].format('HH:mm'),
   startDate: values.dateRange[0].format('YYYY-MM-DD'),