feat: lit/divi-node-copy between pages and library entries

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

tests/Unit/Integrations/Divi/DiviIntegrationTest.php

@@ -29,6 +29,7 @@ final class DiviIntegrationTest extends TestCase
         'lit/divi-delete',
         'lit/divi-duplicate-node',
         'lit/divi-replace-text',
+        'lit/divi-node-copy',
     ];
 
     public function testProvidesTheDiviAbilitiesOnlyWithDivi5(): void
@@ -67,6 +68,25 @@ final class DiviIntegrationTest extends TestCase
         }
     }
 
+    /** Ruling P9 (E9): lit/divi-node-copy follows lit/divi-insert's Tools-tab state. */
+    public function testNodeCopyFollowsLitDiviInsert(): void
+    {
+        $integration = new DiviIntegration(
+            Mockery::mock(ContentSchema::class),
+            FakeChangeLog::forbidden(),
+            diviWritable: static fn (): bool => false
+        );
+        $copy = null;
+        foreach ($integration->abilities() as $ability) {
+            if ($ability->name() === 'lit/divi-node-copy') {
+                $copy = $ability;
+            }
+        }
+
+        self::assertNotNull($copy);
+        self::assertToolError($copy->permission(['post_id' => 7, 'source_post_id' => 8]), 'unsupported');
+    }
+
     public function testGivesContentCreateTheDiviShortForm(): void
     {
         $integration = new DiviIntegration(Mockery::mock(ContentSchema::class), FakeChangeLog::forbidden());