PlatformOrder create: disable renewal type when no subscription context

resources/views/admin/platform_orders/form.blade.php

@@ -104,11 +104,26 @@
 
     <label>
         <span>订单类型</span>
+        @php
+            $canRenew = ((int) ($defaults['site_subscription_id'] ?? 0) > 0) && (($siteSubscription ?? null) && ($siteSubscription->id ?? 0));
+            $selectedOrderType = (string) old('order_type', $defaults['order_type'] ?? 'new_purchase');
+            // 治理口径：续费必须绑定订阅。若当前页面未绑定订阅，则不允许选中 renewal（避免提交后才报错）。
+            if (! $canRenew && $selectedOrderType === 'renewal') {
+                $selectedOrderType = 'new_purchase';
+            }
+        @endphp
         <select name="order_type" required>
             @foreach(($orderTypeLabels ?? []) as $value => $label)
-                <option value="{{ $value }}" @selected(old('order_type', $defaults['order_type'] ?? 'new_purchase') === $value)>{{ $label }}</option>
+                @if($value === 'renewal' && ! $canRenew)
+                    <option value="{{ $value }}" disabled>{{ $label }}（需从订阅进入）</option>
+                @else
+                    <option value="{{ $value }}" @selected($selectedOrderType === $value)>{{ $label }}</option>
+                @endif
             @endforeach
         </select>
+        @if(! $canRenew)
+            <small class="muted">提示：续费单必须绑定订阅。请从「订阅管理」列表/详情进入“续费下单”，系统会自动带入订阅ID。</small>
+        @endif
     </label>
 
     <label>