feat: lit/tb-list and the tool group "Divi Theme Builder"

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/Integrations/Divi/ThemeBuilder/ThemeBuilderIntegration.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LIT\MCP\Integrations\Divi\ThemeBuilder;
+
+use LIT\MCP\ChangeLog\ChangeLog;
+use LIT\MCP\Integrations\Divi\Pages\DiviComposition;
+use LIT\MCP\Integrations\Divi\Pages\DiviSaver;
+use LIT\MCP\Integrations\Divi\Schema\DiviModules;
+use LIT\MCP\Integrations\Integration;
+
+defined('ABSPATH') || exit;
+
+/**
+ * The group "Divi Theme Builder" (Etappe 3b): lit/tb-list, lit/tb-create-template, lit/tb-assign and
+ * lit/tb-activate, all indirect. Built by DiviIntegration::themeBuilder() so it shares the Theme Builder access
+ * (rights, Tools-tab gates – its id ThemeBuilderAccess::GROUP is what the gates of the Divi tools ask; once this
+ * group is registered, its mode and "nur lesen" switch in the Tools tab drive them). Available with the Divi 5
+ * builder, like the Divi group; missing Divi internals show in lit-site-status. Composition, saver and log are
+ * for the writing tools of the later tasks.
+ */
+final class ThemeBuilderIntegration implements Integration
+{
+    public function __construct(
+        private ThemeBuilderAccess $access,
+        private DiviComposition $composition,
+        private DiviSaver $saver,
+        private ChangeLog $log
+    ) {
+    }
+
+    public function id(): string
+    {
+        return ThemeBuilderAccess::GROUP;
+    }
+
+    public function label(): string
+    {
+        return __('Divi Theme Builder', 'wp-lit-mcp');
+    }
+
+    public function isAvailable(): bool
+    {
+        return DiviModules::isAvailable();
+    }
+
+    public function abilities(): array
+    {
+        $conditions = new TemplateConditions($this->access->store());
+
+        return [
+            new TbListAbility($this->access, $conditions),
+        ];
+    }
+}