优化号主交接超时卡死问题

- 号主交接超时(owner_timeout)后允许补提交交接说明，避免临时延误导致订单卡死
- 后台新增"重置交接"动作，可将超时订单恢复为待号主交接并刷新计时
- 交接超时改以进入待交接时刻为基准计算，新增 handoff_started_at 字段

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/features/admin/views/AdminOrderDetailView.vue

@@ -9,6 +9,7 @@ import {
   adminMarkOrderAbnormal,
   adminRefundOrder,
   adminRefundStatus,
+  adminResetHandoff,
   fetchAdminHandoffRecords,
   fetchAdminOrder,
   type HandoffRecord,
@@ -28,7 +29,7 @@ const submitting = ref(false)
 const order = ref<Order | null>(null)
 const handoffRecords = ref<HandoffRecord[]>([])
 const paymentRecords = ref<AdminPayment[]>([])
-const actionType = ref<'close' | 'abnormal' | ''>('')
+const actionType = ref<'close' | 'abnormal' | 'reset' | ''>('')
 const reason = ref('')
 const refundStatus = ref<RefundStatus | null>(null)
 const listingCode = computed(() =>
@@ -37,10 +38,20 @@ const listingCode = computed(() =>
 const refunding = ref(false)
 
 const snapshotText = computed(() => JSON.stringify(order.value?.account_snapshot || {}, null, 2))
-const actionTitle = computed(() => (actionType.value === 'close' ? '客服关闭订单' : '标记订单异常'))
+const actionTitle = computed(() => {
+  if (actionType.value === 'close') return '客服关闭订单'
+  if (actionType.value === 'reset') return '重置交接（给号主再次机会）'
+  return '标记订单异常'
+})
 const canOperate = computed(
   () => !!order.value && !['completed', 'cancelled', 'closed'].includes(order.value.status)
 )
+const canResetHandoff = computed(
+  () =>
+    !!order.value &&
+    order.value.status === 'pending_handoff' &&
+    order.value.handoff_status === 'owner_timeout'
+)
 
 onMounted(loadOrder)
 
@@ -64,7 +75,7 @@ async function loadRefundStatus() {
   }
 }
 
-function openAction(type: 'close' | 'abnormal') {
+function openAction(type: 'close' | 'abnormal' | 'reset') {
   actionType.value = type
   reason.value = ''
 }
@@ -76,6 +87,9 @@ async function submitAction() {
     if (actionType.value === 'close') {
       await adminCloseOrder(order.value.id, reason.value)
       ElMessage.success('订单已关闭')
+    } else if (actionType.value === 'reset') {
+      await adminResetHandoff(order.value.id, reason.value)
+      ElMessage.success('交接已重置，等待号主重新提交')
     } else {
       await adminMarkOrderAbnormal(order.value.id, reason.value)
       ElMessage.success('订单已标记异常')
@@ -197,6 +211,9 @@ function formatHandoffRecordType(type: string) {
         <RouterLink :to="adminPath('orders')">
           <el-button>返回列表</el-button>
         </RouterLink>
+        <el-button v-if="canResetHandoff" type="success" @click="openAction('reset')"
+          >重置交接</el-button
+        >
         <el-button type="warning" :disabled="!canOperate" @click="openAction('abnormal')"
           >标记异常</el-button
         >