fix: 更新发票金额分配逻辑，计算未开票金额和本次开票金额

src/views/financialManage/invoiceManage/components/addOrEditDialogNew.vue

@@ -1188,9 +1188,23 @@
 
       invoiceAmountChange(item, sum) {
         console.log('item~~~', item, sum);
-        const sameKeyItems = this.form.relatedList.filter((d) => d.sourceCode === item.key)
+        const sameKeyItems = this.form.relatedList.filter((d) => d.sourceCode === item.key);
         console.log('sameKeyItems~~~', sameKeyItems);
-        
+
+        // 从关联物品清单中取该订单的"未开票金额"和"本次开票金额"（per-detail 字段）
+        const tableInfoRef = this.$refs.tableInfoRef;
+        let unInvoiceAmount = 0;
+        let invoiceAmount = 0;
+        if (tableInfoRef && tableInfoRef.tableForm && tableInfoRef.tableForm.detailList) {
+          const matchedDetail = tableInfoRef.tableForm.detailList.find(
+            (d) => d.key === item.key
+          );
+          if (matchedDetail) {
+            unInvoiceAmount = parseFloat(matchedDetail.unInvoiceAmount) || 0;
+            invoiceAmount = parseFloat(matchedDetail.invoiceAmount) || 0;
+          }
+        }
+
         let remainingTotal = sum;
         const lastIndex = sameKeyItems.length - 1;
 
@@ -1208,6 +1222,13 @@
             remainingTotal -= allocateAmount;
           }
         });
+
+        // 来源清单的未开票金额 = 关联物品清单的未开票金额 - 本次开票金额
+        const remainingUnInvoice = (unInvoiceAmount - invoiceAmount).toFixed(2);
+        sameKeyItems.forEach((paymentItem) => {
+          this.$set(paymentItem, 'unInvoiceAmount', remainingUnInvoice);
+        });
+
         this.updateInvoiceAmount();
         console.log('分配完成后的 sameKeyItems:', sameKeyItems);
       },