优化

lastleg-service/src/main/java/com/baiyue/lastleg/returnreceipt/service/ReturnReceiptService.java

@@ -501,8 +501,6 @@ public class ReturnReceiptService {
     public PdaReturnReceiptResponses.Confirmed confirm(PdaWarehouseIdentity identity, PdaReturnReceiptRequests.Confirm request) {
         String key = text(request.idempotencyKey());
         String requestHash = hash(request);
-        ReturnReceipt replay = receipts.findKey(identity.operatorKey(), key);
-        if (replay != null) return replayReceipt(replay, requestHash);
         String startedBy = norm(request.startedBy());
         if (!Set.of("RETURN_NO", "SKU").contains(startedBy)) throw badRequest("startedBy 必须为 RETURN_NO 或 SKU");
         String trackingNo = text(request.trackingNo());
@@ -513,8 +511,8 @@ public class ReturnReceiptService {
         if (order == null || !String.valueOf(identity.overseasWarehouseId()).equals(order.getOverseasWarehouseId())) {
             throw notFound("当前绑定仓没有该退货单");
         }
-        // Waiting for the order lock may allow the same request to commit. Use a
-        // current read, not the repeatable-read snapshot established by findKey.
+        // Lock the order before any consistent read: a snapshot opened before
+        // waiting would hide the winner's cartons when rendering replay labels.
         ReturnReceipt concurrentReplay = receipts.lockKey(identity.operatorKey(), key);
         if (concurrentReplay != null) {
             if (!requestHash.equals(concurrentReplay.getRequestHash())) throw conflict("幂等键已用于不同的签收请求");