Preserve WooCommerce HTML in product descriptions with a rich text editor.

Stop stripping tags on sync so paragraphs and bold book titles round-trip to Woo.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/Unit/WooHtmlTest.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Support\WooHtml;
+use PHPUnit\Framework\TestCase;
+
+class WooHtmlTest extends TestCase
+{
+    public function test_sanitize_preserves_paragraphs_and_bold(): void
+    {
+        $html = '<p>Intro</p><p>In <strong>In Jail In My Own Society</strong>, author writes.</p>';
+
+        $this->assertSame(
+            '<p>Intro</p><p>In <strong>In Jail In My Own Society</strong>, author writes.</p>',
+            WooHtml::sanitize($html),
+        );
+    }
+
+    public function test_plain_to_html_wraps_legacy_paragraphs(): void
+    {
+        $plain = "First paragraph\r\nSecond paragraph\r\nThird paragraph";
+
+        $this->assertSame(
+            '<p>First paragraph</p><p>Second paragraph</p><p>Third paragraph</p>',
+            WooHtml::plainToHtml($plain),
+        );
+    }
+
+    public function test_normalize_for_editor_upgrades_plain_text(): void
+    {
+        $this->assertSame(
+            '<p>Line one</p><p>Line two</p>',
+            WooHtml::normalizeForEditor("Line one\nLine two"),
+        );
+    }
+}