fix: library IDs stay hidden without library access (ruling P13)

Outline, node-get, write outlines, the render summary and replace-text's
opaque-node match name no library ID unless the library group is visible
and the user has divi_library; read-only still names them.

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

src/Integrations/Divi/DiviIntegration.php

@@ -79,6 +79,12 @@ final class DiviIntegration implements Integration
         return 'divi';
     }
 
+    /** Ruling P13: whether this connection may see library IDs (library group visible, library right). */
+    public function libraryIdsVisible(): bool
+    {
+        return $this->access->revealsIds();
+    }
+
     public function label(): string
     {
         return __('Divi', 'wp-lit-mcp');