refactor: rename section item to SectionPanel, list to SectionAccordion

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

@@ -1,8 +1,8 @@
 import { notFound } from 'next/navigation';
 import type { SectionRecord } from '$entities/Section';
 import { getCollection } from '$shared/api';
+import { SectionAccordion } from '$widgets/SectionAccordion';
 import { SectionFactory } from '$widgets/SectionFactory';
-import { SectionsAccordion } from '$widgets/SectionsAccordion';
 
 /**
  * Optional catchall: `/` → first section, `/:slug` → that section.
@@ -46,11 +46,11 @@ export default async function SectionPage({ params }: Props) {
 
   return (
     <main className="px-4 py-6 sm:px-8 sm:py-12 lg:py-16 lg:px-16">
-      <SectionsAccordion sections={sections} activeSlug={activeSlug}>
+      <SectionAccordion sections={sections} activeSlug={activeSlug}>
         {sections.map((s) => (
           <SectionFactory key={s.slug} slug={s.slug} />
         ))}
-      </SectionsAccordion>
+      </SectionAccordion>
     </main>
   );
 }