Use verified CLI preparations when web PHP cannot execute processes

tests/Feature/DemographicInstallationTest.php

@@ -64,6 +64,15 @@ final class DemographicInstallationTest extends TestCase
         $this->assertStringContainsString('interpretador', $plan['notice']);
     }
 
+    public function test_disabled_process_support_does_not_crash_the_installation_page(): void
+    {
+        if (function_exists('proc_open')) { $this->markTestSkipped('Run this regression with -d disable_functions=proc_open.'); }
+        config(['demography.prepared_directory' => null]);
+        $this->actingAs($this->manager)->withSession(['portal.mfa_actor' => $this->manager->id, 'portal.mfa_at' => time()]);
+        $this->get('/management/demography/install')->assertOk()->assertInertia(fn (\Inertia\Testing\AssertableInertia $page) => $page
+            ->component('management/demography-install')->where('plan.runtime_ready', false)->where('plan.ready', false));
+    }
+
     public function test_schema_flag_alone_does_not_authorise_the_operational_target(): void
     {
         $this->app['env'] = 'local';