feat(api): upgrade zod to v4 and implement api docs and client generation

src/app/api-doc/page.tsx

@@ -0,0 +1,11 @@
+import { getApiDocs } from '@/lib/swagger';
+import ReactSwagger from './react-swagger';
+
+export default async function IndexPage() {
+  const spec = await getApiDocs();
+  return (
+    <section className='container'>
+      <ReactSwagger spec={spec} />
+    </section>
+  );
+}