refactor: AbilityRegistrar nimmt AbilityGuard-Liste und ToolRefusal statt DiviToolGate/DiviLocked; DiviToolGate implementiert AbilityGuard, DiviLocked ToolRefusal; Test mit Fake-Guard und Fake-Refusal ohne Divi

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

src/Integrations/Divi/Release/DiviLocked.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace LIT\MCP\Integrations\Divi\Release;
 
+use LIT\MCP\Abilities\ToolRefusal;
 use RuntimeException;
 use Throwable;
 use WP_Error;
@@ -11,7 +12,7 @@ use WP_Error;
 defined('ABSPATH') || exit;
 
 /** A write refused because the installed Divi is not released (spec §5.5); AbilityRegistrar returns toError(). */
-final class DiviLocked extends RuntimeException
+final class DiviLocked extends RuntimeException implements ToolRefusal
 {
     public function __construct(public readonly ReleaseStatus $status)
     {

src/Integrations/Divi/Release/DiviToolGate.php

@@ -6,6 +6,7 @@ namespace LIT\MCP\Integrations\Divi\Release;
 
 use Closure;
 use LIT\MCP\Abilities\Ability;
+use LIT\MCP\Abilities\AbilityGuard;
 use LIT\MCP\ChangeLog\ChangeLog;
 use LIT\MCP\Integrations\Divi\Library\LibraryAccess;
 use LIT\MCP\Integrations\Divi\ThemeBuilder\ThemeBuilderAccess;
@@ -17,9 +18,9 @@ defined('ABSPATH') || exit;
  * The central release lock of the Divi tools (spec §5.5): a writing tool of the groups Divi, Divi-Bibliothek or Divi
  * Theme Builder is refused before it runs while Divi is not released (logged with result "refused"); a reading tool
  * runs and gets the notice in warnings. Other tools that reach Divi (lit/content-create with divi) meet the adapter
- * lock (ReleaseGate::assertWritable()).
+ * lock (ReleaseGate::assertWritable()). The AbilityRegistrar receives it as an AbilityGuard from Plugin.
  */
-final class DiviToolGate
+final class DiviToolGate implements AbilityGuard
 {
     public const GROUPS = ['divi', LibraryAccess::GROUP, ThemeBuilderAccess::GROUP];
 
@@ -39,7 +40,7 @@ final class DiviToolGate
         return in_array(($this->groups)()[$ability->name()] ?? '', self::GROUPS, true);
     }
 
-    public function refusal(Ability $ability): ?WP_Error
+    public function refusal(Ability $ability, array $input): ?WP_Error
     {
         if (! $this->covers($ability) || self::readsOnly($ability)) {
             return null;