feat: add estimated duration field and exception status persistence

- Add estimatedDuration field to project form with validation
- Add estimatedDuration column to project table
- Add updateCheckInStatus API for exception status persistence
- Call backend API when marking/removing exception status

src/api/martial/schedulePlan.js

@@ -194,3 +194,16 @@ export const exportSchedulePlans = (params) => {
     responseType: 'blob'
   })
 }
+
+/**
+ * 更新参赛者签到状态
+ * @param {Number} participantId - 参赛者ID
+ * @param {String} status - 状态：未签到/已签到/异常
+ */
+export const updateCheckInStatus = (participantId, status) => {
+  return request({
+    url: '/api/blade-martial/schedule/update-check-in-status',
+    method: 'post',
+    data: { participantId, status }
+  })
+}