Admin dashboard: add billing workbench entry and quick links

tests/Feature/AdminDashboardBillingWorkbenchQuickLinksTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminDashboardBillingWorkbenchQuickLinksTest 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_quick_links(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin');
+        $res->assertOk();
+
+        $res->assertSee('快捷筛选');
+
+        $res->assertSee('href="/admin/platform-orders?payment_status=unpaid&status=pending"', false);
+        $res->assertSee('待支付');
+
+        $res->assertSee('href="/admin/platform-orders?payment_status=paid&status=pending"', false);
+        $res->assertSee('待生效');
+
+        $res->assertSee('href="/admin/platform-orders?syncable_only=1"', false);
+        $res->assertSee('可同步');
+
+        $res->assertSee('href="/admin/platform-orders?sync_status=failed"', false);
+        $res->assertSee('同步失败');
+    }
+}