修复复盘保存失败：原地更新成绩并新增 review 专用接口。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/api/client.ts

@@ -120,6 +120,10 @@ export const examApi = {
     examId: string,
     data: Partial<{ exam_type: ExamType; exam_date: string; title: string; scores: ScoreInput[] }>,
   ) => api.patch<Exam>(`/exams/${examId}`, data),
+  updateReview: (
+    examId: string,
+    reviews: { subject_id: number; review_statuses: ScoreInput['review_statuses'] }[],
+  ) => api.patch<Exam>(`/exams/${examId}/review`, { reviews }),
   remove: (examId: string) => api.delete(`/exams/${examId}`),
   trend: (studentId: string, subjectId: number) =>
     api.get<TrendResponse>(`/students/${studentId}/scores/trend`, {

frontend/src/components/ExamReviewPanel.tsx

@@ -5,6 +5,17 @@ import type { Exam, ReviewStatus } from '../types'
 import { EXAM_TYPE_LABELS, REVIEW_STATUS_OPTIONS } from '../types'
 import ReviewTreeChart from './ReviewTreeChart'
 
+function apiErrorMessage(err: unknown, fallback: string): string {
+  if (err && typeof err === 'object' && 'response' in err) {
+    const detail = (err as { response?: { data?: { detail?: unknown } } }).response?.data?.detail
+    if (typeof detail === 'string') return detail
+    if (Array.isArray(detail)) {
+      return detail.map((item) => item?.msg || String(item)).join('；')
+    }
+  }
+  return fallback
+}
+
 interface Props {
   exams: Exam[]
   onRefresh: () => void
@@ -53,18 +64,17 @@ export default function ExamReviewPanel({ exams, onRefresh }: Props) {
     }
     setSaving(true)
     try {
-      await examApi.update(selectedExam.id, {
-        scores: selectedExam.scores.map((score) => ({
+      await examApi.updateReview(
+        selectedExam.id,
+        selectedExam.scores.map((score) => ({
           subject_id: score.subject_id,
-          total_score: score.total_score,
-          obtained_score: score.obtained_score,
           review_statuses: statusMap[score.subject_id] || [],
         })),
-      })
+      )
       message.success('复盘已保存')
       onRefresh()
-    } catch {
-      message.error('保存失败')
+    } catch (err) {
+      message.error(apiErrorMessage(err, '保存失败'))
     } finally {
       setSaving(false)
     }