重构 lewan 履约：拆分发货模块并统一 registry 入口

将 task-finalization 拆为 dispatch/stock/return/redeem/confirm 等用例，
claim 与 admin 经 executor registry 调用；admin 退号仅清理虚拟号不核销。

apps/backend/src/services/claim/kuaishou-cloud-sync-service.ts

@@ -1,8 +1,8 @@
 import {
-  normalizeKuaishouCloudFlow,
-  prepareKuaishouCloudFulfillmentTask,
-  refreshKuaishouCloudTaskRoleInfo,
-} from '../fulfillment/kuaishou-cloud/index.js'
+  prepareFulfillmentBinding,
+  refreshFulfillmentRole,
+} from '../fulfillment/executors/registry.js'
+import { normalizeKuaishouCloudFlow } from '../fulfillment/kuaishou-cloud/index.js'
 import type { TaskRow } from '../../types/repository/rows.js'
 import { parseTaskContext as parseTaskContextValue } from '../../utils/task-json.js'
 
@@ -12,11 +12,11 @@ export async function syncKuaishouCloudRoleInfo(task: TaskRow) {
   if (!flow.binding.vnId || !flow.binding.vnKey || !flow.binding.vnPhone) {
     if (flow.ticket.status === 'verified' && flow.binding.prepareStatus !== 'ready') {
       try {
-        const prepared = await prepareKuaishouCloudFulfillmentTask(task, {
+        const prepared = await prepareFulfillmentBinding(task, {
           source: 'claim_page_retry_binding_prepare',
           actor: { source: 'system' },
         })
-        return prepared.task
+        return prepared?.task || task
       } catch {
         return task
       }
@@ -28,13 +28,13 @@ export async function syncKuaishouCloudRoleInfo(task: TaskRow) {
   try {
     // 只走 refresh：内部会按间隔 probe 绑链，必要时再查 bind_info
     // 不再 forceProbe + 前置 probe，避免同轮重复打上游
-    const result = await refreshKuaishouCloudTaskRoleInfo(task, {
+    const result = await refreshFulfillmentRole(task, {
       source: 'claim_page_polling',
       actor: { source: 'system' },
       recordEvent: false,
       forceProbe: false,
     })
-    return result.task || task
+    return result?.task || task
   } catch {
     return task
   }