fix(stock): 修复库存盘点锁定检查的空指针异常

liyong

2026-05-11 efdcd7a9eb1e0365bccb1390ee9febe7d1918dc7

 src/main/java/com/ruoyi/device/pojo/DeviceMaintenance.java

@@ -37,7 +37,7 @@
    @Schema(description = "最后执行时间")
    private LocalDateTime lastExecutionTime;

    @Schema(description = "设备类目")
    @Schema(description = "设备项目")
    private String machineryCategory;