修复(#8): 分组管理核心缺陷与测试覆盖 (#11)

Co-authored-by: multica-agent <github@multica.ai>

internal/logic/admin/group/getGroupHistoryLogic.go

@@ -44,9 +44,9 @@ func (l *GetGroupHistoryLogic) GetGroupHistory(req *types.GetGroupHistoryRequest
 		return nil, err
 	}
 
-	// 分页查询
-	offset := (req.Page - 1) * req.Size
-	if err := query.Order("id DESC").Offset(offset).Limit(req.Size).Find(&histories).Error; err != nil {
+	page, size := normalizePagination(req.Page, req.Size)
+	offset := (page - 1) * size
+	if err := query.Order("id DESC").Offset(offset).Limit(size).Find(&histories).Error; err != nil {
 		logger.Errorf("failed to find group histories: %v", err)
 		return nil, err
 	}