feat(cost-center): 第三方卡券渠道归一与采购价配置

- 归一新增 tpv:<SKU> 直达，卡券单无需手工映射
- 成本配置/总览/异常支持 third_party_voucher 与 archived 维度
- 新增卡券采购价面板，写入 sys_third_party_voucher_cost
- 修正 man: 商品改价误用不存在的 sys_manual_cost

apps/frontend/src/pages/admin/cost-center/CostCenterShell.tsx

@@ -48,6 +48,11 @@ const SCOPES: Array<{ key: CostScope; label: string; hint: string }> = [
     label: '接单平台',
     hint: '需要打手接单履约的商品；成本以打手报酬为主，按接单模板配价。',
   },
+  {
+    key: 'third_party_voucher',
+    label: '第三方卡券',
+    hint: '只统计渠道：不建任务、不发领取页；成本按商品采购价版本核算。',
+  },
   {
     key: 'manual',
     label: '人工客服',
@@ -104,7 +109,9 @@ export default function CostCenterShell() {
   const scopeHint = SCOPES.find((item) => item.key === scope)?.hint ?? ''
   const productSourceFilter = scope === 'all' ? undefined : scope
   const fulfillmentModeFilter =
-    scope === 'all' ? undefined : (scope as 'affiliate_dash' | 'work_order' | 'manual')
+    scope === 'all'
+      ? undefined
+      : (scope as 'affiliate_dash' | 'work_order' | 'third_party_voucher' | 'manual')
   const mappingsApplicable = scope === 'all' || scope === 'work_order'
 
   return (