feat(product-archive): 全量档案第二个成本价列改为结算价（模块化 ×0.9）

- 列与变更记录标签：成本价（新品）→ 结算价 / 结算价（新品），表头与导出同步生效
- 结算价在查询映射层实时计算：非模块化沿用成本价原样，模块化按 0.9 折
  （先取整到分再打折、四舍五入保留两位）；模块化以商品标签含「模块化」判断，不落库
- 修复列设置合并时 localStorage 旧 label 覆盖默认列名的问题：内置列名
  一律以当前默认定义为准，改名对已保存列设置的用户才能生效

furniture-3d-system/src/app/supply-chain/database/product-archive/columns.ts

@@ -93,7 +93,7 @@ export const ARCHIVE_COLUMNS: ArchiveColumnGroup[] = [
       { prop: 'priceType', label: '价格类型', width: 100 },
       { prop: 'purchasePrice', label: '采购价', width: 90 },
       { prop: 'costPrice', label: '成本价', width: 90 },
-      { prop: 'costPriceSecondary', label: '成本价', width: 90 },
+      { prop: 'costPriceSecondary', label: '结算价', width: 90 },
       { prop: 'shipAmount', label: '发货金额', width: 100 },
       { prop: 'returnAmount', label: '退货金额', width: 100 },
       { prop: 'salesAmount', label: '销售金额', width: 100 },

furniture-3d-system/src/app/supply-chain/database/product-archive/useColumnSettings.ts

@@ -195,7 +195,8 @@ function loadSettings(): ColumnSetting[] {
           return dc
             ? {
                 ...dc,
-                label: typeof sc.label === 'string' && sc.label.trim() ? sc.label.trim() : dc.label,
+                // 内置列的 label 以当前默认定义为准：列名是字典口径不是用户偏好，
+                // 否则改名（如「成本价」→「结算价」）会被 localStorage 里的旧值盖住。
                 width: Number.isFinite(sc.width) && sc.width > 0 ? sc.width : dc.width,
                 visible: sc.visible !== false,
               }

furniture-3d-system/src/lib/supply-chain-product-archive-change-log.ts

@@ -59,7 +59,7 @@ export const PRODUCT_ARCHIVE_CHANGE_FIELDS = [
   { key: 'stockFactory', label: '工厂库存' },
   { key: 'purchasePrice', label: '采购价' },
   { key: 'costPrice', label: '成本价（聚水潭）' },
-  { key: 'costPriceSecondary', label: '成本价（新品）' },
+  { key: 'costPriceSecondary', label: '结算价（新品）' },
 ] as const
 
 export type ProductArchiveChangeFieldKey =

furniture-3d-system/src/server/services/__tests__/supply-chain-product-archive.service.test.ts

@@ -2,6 +2,7 @@ import {
   resolveProductArchiveWarehouseFields,
   SupplyChainProductArchiveService,
 } from '../supply-chain-product-archive.service'
+import { settlementPriceText } from '../supply-chain-product-archive.mapper'
 import { calculateJstPublicAvailableStock } from '@/lib/supply-chain-product-archive-inventory'
 import {
   calculateProductArchiveVolume,
@@ -197,9 +198,21 @@ describe('supply-chain product archive field mapping', () => {
         stockJianshang: '60',
         purchasePrice: '88.50',
         costPrice: '76.20',
-        costPriceSecondary: '72.30',
+        costPriceSecondary: '76.20',
       }),
     )
   })
 
+  it('derives the settlement price from the cost price and modular product tag', () => {
+    expect(settlementPriceText('76.20', '模块化成品,预估尺寸')).toBe('68.58')
+    expect(settlementPriceText('76.20', '模块化部件,简尚-崔桥工厂半成品包装项目仓')).toBe('68.58')
+    expect(settlementPriceText('123.45', '模块化成品')).toBe('111.11')
+    expect(settlementPriceText('85', '模块化部件')).toBe('76.50')
+    expect(settlementPriceText('76.20', '1688一件代发,已匹配')).toBe('76.20')
+    expect(settlementPriceText('76.20', '')).toBe('76.20')
+    expect(settlementPriceText('', '模块化成品')).toBe('')
+    expect(settlementPriceText(null, '模块化成品')).toBe('')
+    expect(settlementPriceText('abc', '模块化成品')).toBe('')
+  })
+
 })

furniture-3d-system/src/server/services/supply-chain-product-archive.mapper.ts

@@ -37,6 +37,26 @@ function percentageText(
   return value ? `${value.mul(100).toFixed(2)}%` : ''
 }
 
+// 结算价展示口径（2026-10-14 用户确认）：结算价 = 成本价 × 系数，非模块化 ×1
+// 原样展示，模块化 ×0.9（四舍五入保留两位）。模块化以产品标签含「模块化」为
+// 准（聚水潭标签里的“模块化成品/模块化部件”）。查询映射层实时计算，不落库。
+const SETTLEMENT_MODULAR_TAG = '模块化'
+const SETTLEMENT_MODULAR_FACTOR = 0.9
+
+export function settlementPriceText(
+  costPrice: string | null | undefined,
+  productTag: string | null | undefined,
+) {
+  const cost = costPrice?.trim() ?? ''
+  if (!cost) return ''
+  if (!(productTag ?? '').includes(SETTLEMENT_MODULAR_TAG)) return cost
+  const value = Number(cost)
+  if (!Number.isFinite(value)) return ''
+  // 先取整到分再打折，避免浮点误差让 123.45×0.9 这类半厘值四舍五入方向漂移。
+  const settled = Math.round(Math.round(value * 100) * SETTLEMENT_MODULAR_FACTOR) / 100
+  return settled.toFixed(2)
+}
+
 export function normalizeSupplierName(value: string) {
   return value.trim().toLocaleLowerCase('zh-CN')
 }
@@ -120,7 +140,7 @@ export function mapProductArchiveRow({
     stockFactory: record.stockFactory,
     purchasePrice: record.purchasePrice,
     costPrice: record.costPrice,
-    costPriceSecondary: record.costPriceSecondary,
+    costPriceSecondary: settlementPriceText(record.costPrice, record.productTag),
     shipAmount: decimalText(record.salesPerformance?.shipAmount ?? null),
     returnAmount: decimalText(record.salesPerformance?.returnAmount ?? null),
     salesAmount: decimalText(record.salesPerformance?.salesAmount ?? null),