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/services/claim/kuaishou-cloud-claim-service.ts

@@ -405,28 +405,70 @@ export async function redeemKuaishouCloudClaim(token: unknown) {
     })
   }
 
-  const currentStatus = normalizeTaskStatus(context.task.task_status)
+  let workingTask = context.task
+  const currentStatus = normalizeTaskStatus(workingTask.task_status)
   if (isKuaishouCloudRedeemSettledStatus(currentStatus)) {
     return getKuaishouCloudClaimDetail(token)
   }
 
   if (!canRedeemKuaishouCloudClaimStatus(currentStatus)) {
-    throw createHttpError('请先确认角色信息', {
+    throw createHttpError('当前状态不可兑换，请先完成绑定并匹配 UID', {
       statusCode: 409,
-      errorCode: 'claim_kuaishou_cloud_role_not_confirmed',
+      errorCode: 'claim_kuaishou_cloud_not_ready_for_redeem',
     })
   }
 
+  // WAITING_BINDING + UID 匹配：自动升为 ROLE_CONFIRMED，实现一键兑换
+  if (currentStatus === TASK_STATUS.WAITING_BINDING) {
+    const flow = normalizeKuaishouCloudFlow(
+      parseTaskContext(workingTask).kuaishouCloudFulfillment,
+    )
+    if (!isKuaishouCloudMockTask(workingTask)) {
+      assertBoundUidMatchesExpected(workingTask, flow, {
+        errorCodePrefix: 'claim_kuaishou_cloud_redeem',
+      })
+    } else {
+      assertClaimExpectedUidReady(workingTask)
+    }
+
+    const confirmed = await updateTask(workingTask.id, {
+      task_status: TASK_STATUS.ROLE_CONFIRMED,
+      role_id: flow.binding.roleId || workingTask.role_id || '',
+      role_name: flow.binding.roleName || workingTask.role_name || '',
+      user_action_status: TASK_STATUS.ROLE_CONFIRMED,
+      role_confirmed_at: now,
+      last_error: '',
+      updated_at: now,
+    })
+    if (confirmed) {
+      workingTask = confirmed
+    }
+    await createTaskEvent(
+      workingTask.id,
+      'kuaishou_cloud_role_confirmed',
+      {
+        expectedUid: getClaimIdentityFromTask(workingTask).expectedUid,
+        vnPhone: flow.binding.vnPhone,
+        roleName: flow.binding.roleName,
+        roleId: flow.binding.roleId,
+        source: 'claim_page_one_click_redeem',
+      },
+      now,
+    )
+  }
+
   const flowBeforeRedeem = normalizeKuaishouCloudFlow(
-    parseTaskContext(context.task).kuaishouCloudFulfillment,
+    parseTaskContext(workingTask).kuaishouCloudFulfillment,
   )
-  if (!isKuaishouCloudMockTask(context.task)) {
-    assertBoundUidMatchesExpected(context.task, flowBeforeRedeem, {
+  if (!isKuaishouCloudMockTask(workingTask)) {
+    assertBoundUidMatchesExpected(workingTask, flowBeforeRedeem, {
       errorCodePrefix: 'claim_kuaishou_cloud_redeem',
     })
+  } else {
+    assertClaimExpectedUidReady(workingTask)
   }
 
-  const lockedTask = await updateTaskStatusIfCurrent(context.task.id, TASK_STATUS.ROLE_CONFIRMED, {
+  const lockedTask = await updateTaskStatusIfCurrent(workingTask.id, TASK_STATUS.ROLE_CONFIRMED, {
     task_status: TASK_STATUS.REDEEMING,
     user_action_status: 'not_required',
     last_error: '',