feat(cost-center): 卡券规则批量生成与异常标签补齐

- 新增「批量生成渠道规则」，为 tpv: 商品一次性补 third_party_voucher 规则
- 异常原因补「缺少履约载体」，渠道标签补卡券/待分类/归档/未分类

apps/backend/src/routes/admin/cost-center-catalog.ts

@@ -6,6 +6,8 @@
  */
 import { Router } from 'express'
 
+import { ensureVoucherChannelRules } from '../../services/fulfillment/channel-assign-service.js'
+
 import {
   backfillAdminNormalizedQuantities,
   backfillAdminProductMappings,
@@ -364,4 +366,20 @@ router.post(
   ),
 )
 
+router.post(
+  '/cost-center/voucher-products/ensure-rules',
+  requireAdminPermission('finance.config'),
+  createJsonHandler(() => ensureVoucherChannelRules(), {
+    successMessage: '卡券渠道规则已补齐',
+    errorMessage: '补齐卡券渠道规则失败',
+    scope: '[admin/cost-center/voucher-products/ensure-rules]',
+    audit: (_req, data) => ({
+      action: 'voucher_channel_rules_ensured',
+      targetType: 'sku_channel_rules',
+      targetId: '',
+      data: data as Record<string, unknown>,
+    }),
+  }),
+)
+
 export default router