Fix: Auth 500 error, script tag warning, dynamic import, rate limit

src/lib/auth.ts

@@ -53,7 +53,7 @@ export async function getSession(): Promise<{
 
   if (!userId) return null;
 
-  const user = await db.user.findUnique({
+  const user = await db.user.findFirst({
     where: { id: userId, deletedAt: null },
     select: sessionUserSelect,
   });