Admin dashboard: add billing workbench entry and quick links

tests/Feature/AdminDashboardBillingWorkbenchLinksTest.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminDashboardBillingWorkbenchLinksTest 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_dashboard_should_render_billing_workbench_links(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin');
+        $res->assertOk();
+
+        $res->assertSee('收费工作台');
+        $res->assertSee('href="/admin/platform-orders"', false);
+        $res->assertSee('进入平台订单');
+
+        $res->assertSee('href="/admin/site-subscriptions"', false);
+        $res->assertSee('进入订阅管理');
+
+        $res->assertSee('href="/admin/plans"', false);
+        $res->assertSee('进入套餐管理');
+    }
+}