feat: 添加 /api/review-stats 端点和仪表盘实时数据集成

server/handler/bills.go

@@ -198,3 +198,43 @@ func MonthlyStats(c *gin.Context) {
 		Data:   stats,
 	})
 }
+
+// ReviewStats 获取待复核数据统计
+func ReviewStats(c *gin.Context) {
+	repo := repository.GetRepository()
+	
+	// 从MongoDB查询所有需要复核的账单
+	bills, err := repo.GetBillsNeedReview()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, model.ReviewResponse{
+			Result:  false,
+			Message: "查询失败: " + err.Error(),
+		})
+		return
+	}
+
+	highCount := 0
+	lowCount := 0
+	totalCount := 0
+
+	// 统计各等级的复核记录
+	for _, bill := range bills {
+		totalCount++
+		if bill.ReviewLevel == "HIGH" {
+			highCount++
+		} else if bill.ReviewLevel == "LOW" {
+			lowCount++
+		}
+	}
+
+	c.JSON(http.StatusOK, model.ReviewResponse{
+		Result:  true,
+		Message: "获取成功",
+		Data: &model.ReviewData{
+			Total:   totalCount,
+			High:    highCount,
+			Low:     lowCount,
+			Records: nil, // 统计接口不返回具体记录
+		},
+	})
+}