fix(finance): 重写履约路由迁移与统一渠道配置

重写 120/121 迁移，统一内部 SKU、渠道 id、config_json 和旧规则转换。

后台渠道配置改读统一渠道表，卡券与人工配置不再写旧规则。

增加安全渠道切换，并排除已关闭、失败或过期的历史任务载体。

按生产 119 基线重跑迁移、完整履约财务链路和严格预检。

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

@@ -374,8 +374,8 @@ router.post(
     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',
+      action: 'voucher_internal_channels_ensured',
+      targetType: 'internal_sku_channels',
       targetId: '',
       data: data as Record<string, unknown>,
     }),

apps/backend/src/routes/admin/fulfillment-channel.ts

@@ -14,6 +14,7 @@ import {
   deleteChannelRule,
   listChannelRules,
   listPendingChannelGroups,
+  switchChannelForOrderItems,
   unlockChannel,
   upsertChannelRule,
 } from '../../services/fulfillment/channel-assign-service.js'
@@ -143,6 +144,35 @@ router.post(
   ),
 )
 
+router.post(
+  '/fulfillment/switch',
+  requireAdminPermission('finance.config'),
+  createJsonHandler(
+    (req) => {
+      const body = bodyOf(req)
+      return switchChannelForOrderItems({
+        orderItemIds: Array.isArray(body.orderItemIds)
+          ? body.orderItemIds.map((value: unknown) => Number(value))
+          : [Number(body.orderItemId)],
+        channel: String(body.channel || ''),
+        adminUserId: req.adminSession?.userId ?? null,
+        note: String(body.note || ''),
+      })
+    },
+    {
+      successMessage: '履约渠道已切换',
+      errorMessage: '切换履约渠道失败',
+      scope: '[admin/fulfillment/switch]',
+      audit: (req, data) => ({
+        action: 'fulfillment.switch_channel',
+        targetType: 'order_item',
+        targetId: String(bodyOf(req).orderItemId || ''),
+        data: { payload: bodyOf(req), result: data as Record<string, unknown> },
+      }),
+    },
+  ),
+)
+
 router.get(
   '/fulfillment/rules',
   requireAdminPermission('finance.view'),
@@ -170,9 +200,7 @@ router.post(
       const body = bodyOf(req)
       return upsertChannelRule({
         ...(body.id ? { id: Number(body.id) } : {}),
-        provider: String(body.provider || ''),
-        shopId: String(body.shopId || ''),
-        matchKeyType: String(body.matchKeyType || 'sku_code'),
+        matchKeyType: String(body.matchKeyType || 'internal_sku'),
         matchKey: String(body.matchKey || ''),
         channel: String(body.channel || ''),
         priority: Number(body.priority),
@@ -188,7 +216,7 @@ router.post(
       scope: '[admin/fulfillment/rules]',
       audit: (req, data) => ({
         action: 'fulfillment.upsert_rule',
-        targetType: 'sku_channel_rule',
+        targetType: 'internal_sku_channel',
         targetId: String((data as { id?: number })?.id || ''),
         data: { payload: bodyOf(req) },
       }),