同步失败时展示错误信息并增加后端状态日志

backend/internal/services/stock_sync.go

@@ -123,6 +123,13 @@ func (s *StockSyncService) finishJob(ctx context.Context, jobID string, recordsC
 	}
 	if err := s.db.WithContext(ctx).Model(&models.StockSyncJob{}).Where("id = ?", jobID).Updates(updates).Error; err != nil {
 		log.Printf("[stock sync] update job %s failed: %v", jobID, err)
+		return
+	}
+
+	var job models.StockSyncJob
+	if err := s.db.WithContext(ctx).Where("id = ?", jobID).First(&job).Error; err == nil {
+		log.Printf("[stock sync] job %s final state: status=%s, started_at=%v, finished_at=%v",
+			jobID, job.Status, job.StartedAt, job.FinishedAt)
 	}
 }
 

frontend/src/components/StockOverview.tsx

@@ -275,5 +275,8 @@ function formatSyncStatus(job: SyncJob): string {
     }
   }
   const statusText = job.status === 'success' ? '成功' : '失败'
+  if (job.status === 'failed' && job.error_message) {
+    return `${statusText} · ${timeStr} · ${job.error_message}`
+  }
   return `${statusText} · ${timeStr}`
 }