fix: a nested row gets its own auto label (ledger T3)

A row inside a column is labelled "<Abschnitt> – Zeile (innen)" instead of
repeating its outer row's "<Abschnitt> – Zeile". Guide updated.

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

@@ -263,7 +263,7 @@ final class Composer
 
         return match ($type) {
             'divi/section' => $this->section($spec, $path),
-            'divi/row' => $this->row($spec, $path, $context),
+            'divi/row' => $this->row($spec, $path, $context, $parent !== null && $parent->name() !== 'divi/section'),
             default => $this->module($type, $spec, $path, $context),
         };
     }
@@ -330,8 +330,11 @@ final class Composer
         return $section;
     }
 
-    /** @param array<array-key, mixed> $spec */
-    private function row(array $spec, string $path, string $context): Block
+    /**
+     * @param array<array-key, mixed> $spec
+     * @param bool                    $nested In a column (Divi 5 rows nest): own auto label (ledger T3).
+     */
+    private function row(array $spec, string $path, string $context, bool $nested): Block
     {
         $this->unknownKeys($spec, array_merge(self::COMMON, self::ROW), $path);
         $parsed = ColumnWidths::parse($spec['columns'] ?? '4_4');
@@ -339,7 +342,7 @@ final class Composer
             $this->errors[$path . '.columns'] = $parsed['error'];
         }
         $widths = $parsed['widths'];
-        $label = $context === '' ? null : $context . ' – Zeile';
+        $label = $context === '' ? null : $context . ($nested ? ' – Zeile (innen)' : ' – Zeile');
         $attrs = $this->common('divi/row', ['builderVersion' => $this->builderVersion], $spec, $path, $label);
         $row = Block::create('divi/row', $attrs);