新增设备维修保养过程描述，上传对应附件

yaowanxin

2025-12-17 377900a395f0238c98c5fbc945c2bea302b964f1

 src/main/java/com/ruoyi/purchase/pojo/ProductRecord.java

@@ -35,6 +35,11 @@
    private Long purchaseLedgerId;

    /**
     * 产品id
     */
    private Long saleLedgerProjectId;

    /**
     * 产品大类
     */
    private String productCategory;