feat: Divi tools write library entries; global ones with dry run, confirm and backup (E2, F2)

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

src/Plugin.php

@@ -78,7 +78,6 @@ final class Plugin
         $libraryVisible = static function () use (&$policy): bool {
             return $policy instanceof ExposurePolicy && $policy->groupEnabled(LibraryAccess::GROUP);
         };
-        $divi = new DiviIntegration($schema, $changeLog, libraryVisible: $libraryVisible);
         // Security M2: content-create's divi input follows lit/divi-insert (asked at execute time,
         // when registry and policy exist), so the Divi group's switches stop every Divi layout write.
         $diviWritable = static function () use (&$registry, &$policy): bool {
@@ -86,6 +85,11 @@ final class Plugin
                 && $policy instanceof ExposurePolicy
                 && $policy->allows('lit/divi-insert', $registry->abilities());
         };
+        // The Divi tools write to library entries only while the group "Divi-Bibliothek" may write (E9).
+        $libraryWritable = static function () use (&$policy): bool {
+            return $policy instanceof ExposurePolicy && $policy->groupWritable(LibraryAccess::GROUP);
+        };
+        $divi = new DiviIntegration($schema, $changeLog, $libraryWritable, libraryVisible: $libraryVisible);
         $registry = new IntegrationRegistry(
             new CoreIntegration(self::pluginDir() . '/docs/guides'),
             new WordPressIntegration($schema, $changeLog, $divi->contentComposer($diviWritable)),