实现租客成长等级并优化展示

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

@@ -266,7 +266,17 @@ const ownerLossPriceCent = computed(() => {
 const hasOwnerRentBreakdown = computed(() => ownerCoinBasePriceCent.value !== null)
 const fundSplitRows = computed(() => {
   if (!order.value) return []
-  const rows: FundSplitRow[] = [{ label: '租客租金', amountCent: order.value.rent_amount_cent }]
+  const rows: FundSplitRow[] = []
+  if (Number(order.value.rent_discount_amount_cent || 0) > 0) {
+    rows.push(
+      { label: '原始租金', amountCent: order.value.rent_original_amount_cent },
+      {
+        label: `${order.value.renter_growth_level_name || '成长等级'}优惠`,
+        amountCent: -Number(order.value.rent_discount_amount_cent || 0),
+      }
+    )
+  }
+  rows.push({ label: '租客租金', amountCent: order.value.rent_amount_cent })
   if (hasOwnerRentBreakdown.value) {
     rows.push(
       { label: '号主纯币价格', amountCent: ownerCoinBasePriceCent.value },
@@ -843,7 +853,12 @@ function paymentPaidAt(record: AdminPayment) {
         <el-button v-if="canResetHandoff" type="success" @click="openAction('reset')">
           {{ resetActionLabel }}
         </el-button>
-        <el-button v-if="canPlatformHandoff" type="primary" plain @click="openPlatformHandoff">
+        <el-button
+          v-if="canPlatformHandoff"
+          class="platform-handoff-button"
+          type="primary"
+          @click="openPlatformHandoff"
+        >
           {{ platformHandoffAction?.label || '客服代交接' }}
         </el-button>
         <el-button
@@ -1551,6 +1566,27 @@ function paymentPaidAt(record: AdminPayment) {
   word-break: break-word;
 }
 
+.platform-handoff-button {
+  min-width: 96px;
+  border-color: #2563eb;
+  background: #2563eb;
+  color: #ffffff;
+  font-weight: 700;
+  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.18);
+}
+
+.platform-handoff-button:hover,
+.platform-handoff-button:focus {
+  border-color: #1d4ed8;
+  background: #1d4ed8;
+  color: #ffffff;
+}
+
+.platform-handoff-button:active {
+  border-color: #1e40af;
+  background: #1e40af;
+}
+
 .order-detail-grid {
   display: grid;
   grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);