平台订单创建页：去订阅管理选择订阅的 back 保持 require_subscription=1 并新增测试

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

@@ -177,7 +177,16 @@
                     $jumpBase .= '?' . \Illuminate\Support\Arr::query($jumpQuery);
                 }
 
-                $jumpUrl = \App\Support\BackUrl::withBack($jumpBase, \App\Support\BackUrl::selfWithoutBack());
+                $createSelfForBack = \App\Support\BackUrl::selfWithoutBack();
+                // 若 require_subscription 来自 old input（校验失败回填），当前 URL 可能不带 query，
+                // 此时也需要把 require_subscription=1 写回到 back，避免“去订阅管理选择订阅”回来后治理口径丢失。
+                if (($requireSubscription ?? false) || ((string) old('require_subscription', '') === '1')) {
+                    $createSelfForBack = \App\Support\BackUrl::currentPathWithQuery([
+                        'require_subscription' => 1,
+                    ], '');
+                }
+
+                $jumpUrl = \App\Support\BackUrl::withBack($jumpBase, $createSelfForBack);
             @endphp
 
             @if(($requireSubscription ?? false) && $jumpUrl)

tests/Feature/AdminPlatformOrderCreateRequireSubscriptionFlagJumpBackShouldIncludeRequireSubscriptionTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderCreateRequireSubscriptionFlagJumpBackShouldIncludeRequireSubscriptionTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_jump_to_subscriptions_link_should_carry_back_with_require_subscription_flag_when_no_query(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        // 模拟“校验失败回填后”回到 create 页：URL 不带 require_subscription query，但 old input 仍有 require_subscription=1
+        // 通过 withSession 注入 old input
+        $res = $this->withSession([
+            '_old_input' => [
+                'require_subscription' => '1',
+            ],
+        ])->get('/admin/platform-orders/create');
+
+        $res->assertOk();
+
+        // 关键：跳转订阅管理的链接应带 back，且 back 中应包含 require_subscription=1
+        // 这样用户从订阅管理选中订阅再回来，治理口径不会丢。
+        $res->assertSee('去订阅管理选择订阅', false);
+        $res->assertSee('back=%2Fadmin%2Fplatform-orders%2Fcreate%3Frequire_subscription%3D1', false);
+    }
+}