refactor: Divi-Boot-Schritte in DiviIntegration::boot() (Bootable) – Upgrader-Hook, Prüf-Route, CLI und Reiter „Divi“ über lit_mcp_admin_tabs; IntegrationRegistry::boot() bootet jede Integration genau einmal; Prüfseiten-Aufräumen im load-Hook statt beim Rendern

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/Unit/Integrations/IntegrationRegistryTest.php

@@ -6,6 +6,7 @@ namespace LIT\MCP\Tests\Unit\Integrations;
 
 use Brain\Monkey\Functions;
 use LIT\MCP\Abilities\Ability;
+use LIT\MCP\Integrations\Bootable;
 use LIT\MCP\Integrations\Core\CoreIntegration;
 use LIT\MCP\Integrations\Divi\DiviIntegration;
 use LIT\MCP\Integrations\Integration;
@@ -79,6 +80,33 @@ final class IntegrationRegistryTest extends TestCase
         self::assertSame('Divi', (new DiviIntegration($schema, FakeChangeLog::forbidden()))->label());
     }
 
+    /** Integration-owned boot steps run once each, in registry order, whether or not the integration is available. */
+    public function testBootsEveryBootableIntegrationOnce(): void
+    {
+        $booted = [];
+        $bootable = function (string $id, bool $available) use (&$booted): Integration {
+            $integration = Mockery::mock(Integration::class . ', ' . Bootable::class);
+            $integration->allows('id')->andReturn($id);
+            $integration->allows('isAvailable')->andReturn($available);
+            $integration->expects('abilities')->never();
+            $integration->expects('boot')->once()->andReturnUsing(static function () use (&$booted, $id): void {
+                $booted[] = $id;
+            });
+
+            return $integration;
+        };
+        $registry = new IntegrationRegistry(
+            $this->integration('core', true, []),
+            $bootable('divi', false),
+            $bootable('pods', true)
+        );
+
+        $registry->boot();
+        $registry->boot();
+
+        self::assertSame(['divi', 'pods'], $booted);
+    }
+
     private function ability(string $name, bool $direct): Ability
     {
         $ability = Mockery::mock(Ability::class);