refactor: narrow over-exposed API (L2)

Composer::autoLabel is private (tested through compose()); the
DiviComposition getters used only by tests are marked @internal;
Limits::snapshotCount is documented as reserved; the ShortformWriter test
seam is named $modulesForTests.

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

src/Integrations/Divi/Compose/Composer.php

@@ -232,7 +232,7 @@ final class Composer
     }
 
     /** Admin label for a new module: "<Abschnitt> – <Modultitel>" or the title alone. */
-    public function autoLabel(string $name, string $context): string
+    private function autoLabel(string $name, string $context): string
     {
         $title = $this->catalog->title($name);
 

src/Integrations/Divi/Compose/ShortformWriter.php

@@ -27,14 +27,14 @@ final class ShortformWriter
     private const COLOR_ERROR = 'Farbe erwartet, z. B. {{color:primary}} oder #1a1a1a';
 
     /**
-     * @param array<string, array<string, array<string, mixed>>>|null $modules Short form per
-     *        type (tests only); null = ShortformMap.
+     * @param array<string, array<string, array<string, mixed>>>|null $modulesForTests Short form
+     *        per type, a test seam (trusted wiring only, ledger T2); null = ShortformMap.
      */
     public function __construct(
         private Placeholders $placeholders,
         private MediaResolver $media,
         private ValueCleaner $cleaner,
-        private ?array $modules = null
+        private ?array $modulesForTests = null
     ) {
     }
 
@@ -48,7 +48,7 @@ final class ShortformWriter
     {
         // Ruling S35: controls go before placeholder resolution and trim ("{\0{post:title}}").
         $values = ControlChars::stripDeep($values);
-        $fields = $this->modules === null ? ShortformMap::fields($type) : ($this->modules[$type] ?? []);
+        $fields = $this->modulesForTests === null ? ShortformMap::fields($type) : ($this->modulesForTests[$type] ?? []);
         $errors = [];
         foreach ($values as $name => $value) {
             $name = (string) $name;
@@ -78,7 +78,7 @@ final class ShortformWriter
      */
     public function paths(string $type, array $names): array
     {
-        $fields = $this->modules === null ? ShortformMap::fields($type) : ($this->modules[$type] ?? []);
+        $fields = $this->modulesForTests === null ? ShortformMap::fields($type) : ($this->modulesForTests[$type] ?? []);
         $paths = [];
         foreach ($names as $name) {
             if (isset($fields[$name]['path'])) {

src/Integrations/Divi/Pages/DiviComposition.php

@@ -61,7 +61,11 @@ class DiviComposition
         return $bound;
     }
 
-    /** The one checker of $variable(…)$ values of this composition, with the entry's live map (S22, S31). */
+    /**
+     * The one checker of $variable(…)$ values of this composition, with the entry's live map (S22, S31).
+     *
+     * @internal Public for tests; code uses cleaner() / composer().
+     */
     public function references(): VariableRef
     {
         return $this->references ??= new VariableRef(
@@ -70,7 +74,11 @@ class DiviComposition
         );
     }
 
-    /** The one Placeholders instance of this composition (ruling S31). */
+    /**
+     * The one Placeholders instance of this composition (ruling S31).
+     *
+     * @internal Public for tests; code uses attrWriter() / composer().
+     */
     public function placeholders(): Placeholders
     {
         return $this->placeholders ??= new Placeholders($this->design->read());
@@ -100,6 +108,7 @@ class DiviComposition
         );
     }
 
+    /** @internal Public for tests; code uses composer() / editor(). */
     public function rules(): StructureRules
     {
         return new StructureRules($this->modules->catalog());

src/Limits.php

@@ -46,6 +46,7 @@ final class Limits
         return $this->all()['log_retention_days'];
     }
 
+    /** Reserved for design-system snapshots (Etappe 3); LimitsTab keeps the field hidden until then. */
     public function snapshotCount(): int
     {
         return $this->all()['snapshot_count'];