优化 UID 履约闸门、运营可见性与一键兑换

lewan 发货强制 expectedUid 并取消无 UID 旧路径回落；任务详情展示 UID 匹配态；领取页匹配后可一键兑换；补充 identity 单测并收口短链说明。

apps/backend/src/domain/task-status.test.ts

@@ -21,7 +21,8 @@ test('任务状态机声明 kuaishou-lewan 主流程跳转', () => {
 test('任务状态机收敛领取和 91 查询的业务判断', () => {
   assert.equal(shouldEnsureKuaishouCloudClaimLink(TASK_STATUS.PENDING_BINDING_PREPARE), true)
   assert.equal(canRedeemKuaishouCloudClaimStatus(TASK_STATUS.ROLE_CONFIRMED), true)
-  assert.equal(canRedeemKuaishouCloudClaimStatus(TASK_STATUS.WAITING_BINDING), false)
+  assert.equal(canRedeemKuaishouCloudClaimStatus(TASK_STATUS.WAITING_BINDING), true)
+  assert.equal(canRedeemKuaishouCloudClaimStatus(TASK_STATUS.LINK_GENERATED), false)
   assert.equal(isClaimInactiveTaskStatus(TASK_STATUS.MANUAL_REVIEW), true)
   assert.equal(isOpen91FailedTaskStatus(TASK_STATUS.CLOSED), true)
 })

apps/backend/src/domain/task-status.ts

@@ -257,7 +257,12 @@ export function isKuaishouCloudRedeemSettledStatus(status: unknown): boolean {
 }
 
 export function canRedeemKuaishouCloudClaimStatus(status: unknown): boolean {
-  return normalizeTaskStatus(status) === TASK_STATUS.ROLE_CONFIRMED
+  const normalized = normalizeTaskStatus(status)
+  // 允许 WAITING_BINDING：UID 匹配后可一键确认+兑换
+  return (
+    normalized === TASK_STATUS.ROLE_CONFIRMED ||
+    normalized === TASK_STATUS.WAITING_BINDING
+  )
 }
 
 export function canRegenerateClaimLinkStatus(status: unknown): boolean {