feat: lit/divi-insert and lit/divi-update

All-or-nothing at ability level (S39), duplicate ids refused (S14),
set and attrs on the same path refused (S38), invalid_attr_path error.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7

src/Plugin.php

@@ -68,7 +68,7 @@ final class Plugin
             new CoreIntegration(self::pluginDir() . '/docs/guides'),
             new WordPressIntegration($schema, $changeLog),
             new MediaIntegration($schema, $changeLog, $limits),
-            new DiviIntegration($schema)
+            new DiviIntegration($schema, $changeLog)
         );
 
         $policy = ExposurePolicy::fromOption();