feat: Divi read tools accept library entries (library access, E1/E3)

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

src/Integrations/Divi/Pages/DiviPage.php

@@ -21,10 +21,17 @@ final class DiviPage
     public function __construct(
         public readonly WP_Post $post,
         public readonly Document $document,
-        public readonly NodeIndex $index
+        public readonly NodeIndex $index,
+        private bool $libraryItem = false
     ) {
     }
 
+    /** Whether the entry is a Divi Library entry (et_pb_layout), loaded through LibraryAccess. */
+    public function isLibraryItem(): bool
+    {
+        return $this->libraryItem;
+    }
+
     public function treeRev(): string
     {
         return Rev::of((string) $this->post->post_content);
@@ -40,7 +47,10 @@ final class DiviPage
 
     public function editUrl(): string
     {
-        return self::builderUrl($this->post);
+        // A library entry has no public permalink (public: false); Divi's library list opens it here.
+        return $this->libraryItem
+            ? (string) get_edit_post_link($this->post, 'raw')
+            : self::builderUrl($this->post);
     }
 
     /** The entry opened in the Divi Visual Builder – the edit_url of every Divi write (review I-1). */