```

feat(shopro_huifu): 增加分账确认接口的确认基础金额参数支持

新增可选的确认基础金额参数，用于控制分账确认时的总金额计算，
同时添加了相应的日志记录功能，便于调试和监控分账流程。
```

addons/shopro_huifu/library/HuifuSplitService.php

@@ -97,7 +97,7 @@ class HuifuSplitService
                 ]);
             }
 
-            $confirmResult = $this->confirm($ext, $acctInfos, $outOrderNo);
+            $confirmResult = $this->confirm($ext, $acctInfos, $outOrderNo, $confirmBase);
             $splitOrder->status = 2;
             $splitOrder->confirm_hf_seq_id = $confirmResult['hf_seq_id'] ?? ($confirmResult['confirm_hf_seq_id'] ?? '');
             $splitOrder->hf_req_seq_id = $outOrderNo;
@@ -136,7 +136,7 @@ class HuifuSplitService
         return $this->executeByOrderId($orderId);
     }
 
-    protected function confirm($ext, array $acctInfos, $confirmReqSeqId)
+    protected function confirm($ext, array $acctInfos, $confirmReqSeqId, $confirmBase = null)
     {
         SdkLoader::requireRequest('V2TradePaymentDelaytransConfirmRequest.php');
         $request = new \BsPaySdk\request\V2TradePaymentDelaytransConfirmRequest();
@@ -144,7 +144,16 @@ class HuifuSplitService
         $request->setReqSeqId($confirmReqSeqId);
         $request->setHuifuId($this->config->get('huifu_id'));
 
-        $acctSplitBunch = json_encode(['acct_infos' => $acctInfos], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+        $confirmBase = $confirmBase !== null
+            ? number_format((float) $confirmBase, 2, '.', '')
+            : null;
+        $bunch = ['acct_infos' => $acctInfos];
+        if ($confirmBase !== null && bccomp($confirmBase, '0.00', 2) > 0) {
+            // 本次交易确认总额（待确认全额）；acct_infos 为向外分出的部分，其余留主商户
+            $bunch['total_div_amt'] = $confirmBase;
+        }
+        $acctSplitBunch = json_encode($bunch, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+        \think\Log::info('[shopro_huifu] delaytrans confirm acct_split_bunch=' . $acctSplitBunch);
         $request->setExtendInfo([
             'org_req_date'     => $ext['req_date'],
             'org_req_seq_id'   => $ext['req_seq_id'],