refactor: rename for intent (L3)

PostChangeResult is PostSaveFollowUp (the after-save pipeline, not a
result); DiviChange::changed() is record() (moved nodes are recorded but
not touched). cleanValue/withoutControls were renamed in wave 2.

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

tests/Unit/Integrations/Divi/Pages/DiviWriterTest.php

@@ -134,7 +134,7 @@ final class DiviWriterTest extends TestCase
         $button->setAttrs(AttrMap::set($button->attrs(), 'button.innerContent.desktop.value.text', 'Neu'));
         $page->document->children()[0]->removeChild($removed);
         $change = (new DiviChange('Button geändert'))
-            ->changed($button, 'updated')
+            ->record($button, 'updated')
             ->removed('s1', $removed)
             ->warning('eigene Warnung');