fix(finance): 收敛内部 SKU 履约路由与载体状态

统一内部 SKU 与渠道主/兜底解析，禁止并列主渠道。

运营指定渠道改为先创建真实载体，失败保持明确 pending。

历史缺载体、多载体冲突和自动发货兜底统一由管道修复。

迁移人工配置与旧 sku_code 规则，补充严格预检和集成测试。

apps/frontend/src/pages/admin/AdminFulfillmentChannelPage.tsx

@@ -100,7 +100,13 @@ function PendingPanel() {
         channel: selections[rowKey(row)] || '',
       }),
     onSuccess: (result) => {
-      message.success(`已指定 ${result.data.updated} 个订单项`)
+      if (result.data.carrierFailed > 0) {
+        message.warning(
+          `已指定 ${result.data.updated} 个订单项，${result.data.carrierFailed} 个因载体创建失败仍待处理`,
+        )
+      } else {
+        message.success(`已指定 ${result.data.updated} 个订单项`)
+      }
       void queryClient.invalidateQueries({ queryKey: ['fulfillment-pending'] })
     },
     onError: () => message.error('指定渠道失败'),
@@ -135,6 +141,7 @@ function PendingPanel() {
           no_internal_sku: '无内部SKU',
           no_channel_capability: '无渠道能力',
           no_carrier: '无履约载体',
+          routing_conflict: '渠道冲突',
         }
         return value?.length ? value.map((reason) => labels[reason] || reason).join(' / ') : '-'
       },

apps/frontend/src/services/admin/fulfillment-channel.ts

@@ -100,7 +100,10 @@ export function assignChannelBySku(payload: {
   channel: string
   note?: string
 }) {
-  return apiPost<{ updated: number }>('/api/v1/admin/fulfillment/assign', payload)
+  return apiPost<{ updated: number; carrierFailed: number; ruleCreated: boolean }>(
+    '/api/v1/admin/fulfillment/assign',
+    payload,
+  )
 }
 
 export function assignChannelToItems(payload: {
@@ -108,7 +111,10 @@ export function assignChannelToItems(payload: {
   channel: string
   note?: string
 }) {
-  return apiPost<{ updated: number }>('/api/v1/admin/fulfillment/assign', payload)
+  return apiPost<{ updated: number; carrierFailed: number }>(
+    '/api/v1/admin/fulfillment/assign',
+    payload,
+  )
 }
 
 export function fetchChannelRules(params: { channel?: string } = {}) {