public function get(): void {
$this->_validate_token();

$id = (int) segment(3); // URL: clients/get/{id} → segment 3

if ($id < 1) {
http_response_code(400);
echo json(['error' => 'Invalid ID']);
die();
}

$client = $this->model->get_user($id);


if (!$client) {
http_response_code(404);
echo json(['error' => 'Client not found']);
die();
}

http_response_code(200);
echo json($client);
}