Implement superadmin audit log for mutations

tests/Feature/SuperAdminAuditLogSettingsTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Filament\SuperAdmin\Pages\GuestPolicySettingsPage;
+use App\Models\SuperAdminActionLog;
+use App\Models\User;
+use Filament\Facades\Filament;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Tests\TestCase;
+
+class SuperAdminAuditLogSettingsTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_superadmin_settings_save_creates_audit_log(): void
+    {
+        $user = User::factory()->create(['role' => 'super_admin']);
+
+        $this->bootSuperAdminPanel($user);
+
+        Livewire::test(GuestPolicySettingsPage::class)
+            ->set('guest_downloads_enabled', false)
+            ->call('save');
+
+        $this->assertTrue(SuperAdminActionLog::query()
+            ->where('action', 'guest_policy.updated')
+            ->exists());
+    }
+
+    private function bootSuperAdminPanel(User $user): void
+    {
+        $panel = Filament::getPanel('superadmin');
+
+        $this->assertNotNull($panel);
+
+        Filament::setCurrentPanel($panel);
+        Filament::bootCurrentPanel();
+        Filament::auth()->login($user);
+    }
+}