chore(api): add explicit type casting for request payloads

app/api/admin/users/[id]/route.ts

@@ -3,17 +3,17 @@ import { prisma } from "../../../../../lib/prisma";
 
 type Params = { params: Promise<{ id: string }> };
 
-// DELETE /api/admin/users/[id] — supprimer un utilisateur
+// DELETE /api/admin/users/[id] - supprimer un utilisateur
 export async function DELETE(_req: Request, { params }: Params) {
   const { id } = await params;
   await prisma.user.delete({ where: { id } });
   return NextResponse.json({ ok: true });
 }
 
-// PATCH /api/admin/users/[id] — ban/unban
+// PATCH /api/admin/users/[id] - ban/unban
 export async function PATCH(req: Request, { params }: Params) {
   const { id } = await params;
-  const { banned } = await req.json() as { banned: boolean };
+  const { banned } = (await req.json()) as { banned: boolean };
   const user = await prisma.user.update({ where: { id }, data: { banned } });
   return NextResponse.json({ id: user.id, banned: user.banned });
 }