优化计费逻辑

bms-back/bms-system/src/main/java/com/bms/price/mapper/PrcBillingTaskMapper.java

@@ -17,6 +17,9 @@ public interface PrcBillingTaskMapper
     /** CAS: WAITING -> processing claim not needed; writeback SUCCESS/FAILED */
     int updateBillingResult(PrcBillingTask task);
 
+    /** Delete the queue row once prc_order_bill is saved. transfer_no is the unique key. */
+    int deleteByTransferNo(@Param("transferNo") String transferNo);
+
     /** Count tasks for filter retry (customer + bill_time window). */
     int countTaskIdsByFilter(PrcBillingTask query);