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/fulfillment/kuaishou-cloud/index.ts

@@ -1,6 +1,9 @@
 /**
- * kuaishou-lewan（cloud）履约入口。
- * 实现已按职责拆分到 prepare / rebind / probe / refresh-role 等模块。
+ * kuaishou-lewan（业务名）履约入口。
+ * 模块路径仍为 kuaishou-cloud；executor_key = kuaishou_ct_assisted；
+ * 外部平台 API 在 platforms/cloudtentacles。
+ *
+ * 实现按职责拆分：prepare / redeem / dispatch / return / role 等。
  */
 export {
   isKuaishouCloudBindUrlFresh,
@@ -27,7 +30,15 @@ export {
 export { rebindKuaishouCloudTaskRole } from './rebind-role.js'
 export { probeKuaishouCloudTaskBindUrl } from './probe-bind-url.js'
 export { refreshKuaishouCloudTaskRoleInfo } from './refresh-role-info.js'
+export { confirmKuaishouCloudTaskRole } from './confirm-role.js'
+export type { ConfirmKuaishouCloudRoleResult } from './confirm-role.js'
+export { dispatchKuaishouCloudFulfillmentTask } from './dispatch-fulfillment.js'
+export { returnKuaishouCloudFulfillmentTask } from './return-fulfillment.js'
+export { redeemKuaishouCloudTask } from './redeem-fulfillment.js'
+export type { RedeemKuaishouCloudTaskResult } from './redeem-fulfillment.js'
 export {
-  dispatchKuaishouCloudFulfillmentTask,
-  returnKuaishouCloudFulfillmentTask,
-} from './task-finalization.js'
+  isKuaishouCloudMockTask,
+  isKuaishouCloudMockContext,
+  buildMockVerifiedKuaishouCloudFlow,
+  completeMockKuaishouCloudTask,
+} from './mock-helpers.js'