feat: improve attendance scheduling and API validation

apps/admin/src/pages/Schedules/index.tsx

@@ -6,6 +6,7 @@ import {
   Modal,
   Form,
   Input,
+  InputNumber,
   DatePicker,
   TimePicker,
   Popconfirm,
@@ -53,6 +54,7 @@ interface ClassScheduleItem {
   weekDay: number;
   startTime: string;
   endTime: string;
+  attendanceAdvanceMinutes: number;
   startDate: string;
   endDate: string;
   subject: string;
@@ -351,7 +353,7 @@ const SchedulesPage: React.FC = () => {
       setEditingSchedule(null);
       setModalMode('create');
       form.resetFields();
-      form.setFieldsValue({ classroomId, weekDay });
+      form.setFieldsValue({ classroomId, weekDay, attendanceAdvanceMinutes: 30 });
       setModalOpen(true);
     }
   };
@@ -960,9 +962,28 @@ const SchedulesPage: React.FC = () => {
               />
             </Form.Item>
 
+            <Form.Item
+              name="attendanceAdvanceMinutes"
+              label="课前签到时间"
+              tooltip="从上课前指定分钟开始，到下课时间结束；期间任意上班或下班打卡都计为出勤"
+              initialValue={30}
+              rules={[{ required: true, message: '请设置课前签到时间' }]}
+            >
+              <InputNumber
+                min={0}
+                max={1440}
+                step={5}
+                addonAfter="分钟"
+                style={{ width: '100%' }}
+                placeholder="例如 30"
+              />
+            </Form.Item>
+
             <Form.Item
               name="timeRange"
               label="上课时段"
+              tooltip="同一教室的前后两节排课必须至少间隔10分钟"
+              extra="系统按10分钟选择时间，并为相邻排课强制预留至少10分钟。"
               rules={[{ required: true, message: '请选择时段' }]}
             >
               <TimePicker.RangePicker
@@ -1008,6 +1029,7 @@ const SchedulesPage: React.FC = () => {
                     weekDay:
                       selectedCell?.weekDay ?? (selectedDate ? selectedDate.day() || 7 : undefined),
                     dateRange: selectedDate ? [selectedDate, selectedDate] : undefined,
+                    attendanceAdvanceMinutes: 30,
                   });
                 }}
               >
@@ -1054,6 +1076,12 @@ const SchedulesPage: React.FC = () => {
                         <strong>时段：</strong>
                         {s.startTime} ~ {s.endTime}
                       </div>
+                      {!isMaskedSchedule(s) && (
+                        <div>
+                          <strong>签到窗口：</strong>
+                          课前 {s.attendanceAdvanceMinutes ?? 30} 分钟至下课
+                        </div>
+                      )}
                       <div>
                         <strong>日期：</strong>
                         {s.startDate} ~ {s.endDate}