fix: show frontmatter description as fallback when Lexical content has no description nodes

app/[locale]/products/[...slug]/page.tsx

@@ -402,7 +402,13 @@ export default async function ProductPage({ params }: ProductPageProps) {
             {/* Description Area Next to Sidebar */}
             <div className="lg:col-span-8">
               <div className="max-w-none prose prose-primary prose-lg md:prose-xl mb-16 pb-16 border-b border-neutral-dark/5">
-                <PayloadRichText data={descriptionContent} />
+                {descriptionChildren.length > 0 ? (
+                  <PayloadRichText data={descriptionContent} />
+                ) : product.frontmatter.description ? (
+                  <p className="text-lg md:text-xl text-text-secondary leading-relaxed">
+                    {product.frontmatter.description}
+                  </p>
+                ) : null}
               </div>
             </div>