feat: Presets als Stapel, Gruppen-Presets und clear_overrides im Composer

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/Integrations/Divi/Pages/DiviComposition.php

@@ -18,6 +18,9 @@ use LIT\MCP\Integrations\Divi\Compose\ValueSanitizer;
 use LIT\MCP\Integrations\Divi\Compose\VariableRef;
 use LIT\MCP\Integrations\Divi\Compose\Warnings;
 use LIT\MCP\Integrations\Divi\Design\DesignSystemReader;
+use LIT\MCP\Integrations\Divi\Design\DesignSystemWriter;
+use LIT\MCP\Integrations\Divi\Design\PresetAssignment;
+use LIT\MCP\Integrations\Divi\Design\PresetBook;
 use LIT\MCP\Integrations\Divi\Schema\DiviModules;
 
 defined('ABSPATH') || exit;
@@ -29,6 +32,11 @@ defined('ABSPATH') || exit;
  * and ONE ValueCleaner instance are shared by AttrWriter, ShortformWriter and Composer, and the
  * same AttrWriter serves Composer and the abilities.
  *
+ * Presets (D7) reach blocks through ONE PresetAssignment per composition: its book is Divi's stored preset
+ * inventory (DesignSystemWriter::presets()), read lazily and at most once – only when a write names a preset or a
+ * warning looks at a block that has one – and Divi's option groups come from DesignSystemWriter::groupsOf().
+ * Without a preset source (null, unit tests) there are no presets.
+ *
  * forPost() binds the composition to the entry being written (DiviWriter::composition() does it
  * for the abilities); unbound, VariableRef's default map applies. Not final so abilities can be
  * tested with a mock.
@@ -42,6 +50,7 @@ class DiviComposition
     private ?ValueCleaner $cleaner = null;
     private ?AttrWriter $attrWriter = null;
     private ?Composer $composer = null;
+    private ?PresetAssignment $assignment = null;
 
     public function __construct(
         private DiviModules $modules,
@@ -49,7 +58,8 @@ class DiviComposition
         private ValueSanitizer $sanitizer = new WpValueSanitizer(),
         private MediaResolver $media = new WpMediaResolver(),
         private DynamicContentMap $dynamicContent = new DynamicContentMap(),
-        private LinkTargets $links = new WpLinkTargets()
+        private LinkTargets $links = new WpLinkTargets(),
+        private ?DesignSystemWriter $presetSource = null
     ) {
     }
 
@@ -64,6 +74,7 @@ class DiviComposition
         $bound->cleaner = null;
         $bound->attrWriter = null;
         $bound->composer = null;
+        $bound->assignment = null;
 
         return $bound;
     }
@@ -102,6 +113,21 @@ class DiviComposition
         return $this->attrWriter ??= new AttrWriter($this->modules->catalog(), $this->placeholders(), $this->cleaner());
     }
 
+    /**
+     * The one PresetAssignment of this composition (D7, rulings R2, R3): the book comes lazily from Divi's stored
+     * presets, ids must pass the choke point unchanged.
+     *
+     * @internal Public for tests; code uses composer() / warnings().
+     */
+    public function presets(): PresetAssignment
+    {
+        return $this->assignment ??= new PresetAssignment(
+            fn (): PresetBook => PresetBook::fromDivi($this->presetSource?->presets() ?? []),
+            fn (string $module): array => $this->presetSource?->groupsOf($module) ?? [],
+            $this->cleaner()->keepsId(...)
+        );
+    }
+
     public function composer(): Composer
     {
         return $this->composer ??= new Composer(
@@ -110,7 +136,7 @@ class DiviComposition
             new ShortformWriter($this->placeholders(), $this->media, $this->cleaner()),
             $this->attrWriter(),
             $this->cleaner(),
-            $this->design->read(),
+            $this->presets(),
             $this->modules->builderVersion()
         );
     }