defmodule PtcRunner.Lisp.ExecutionError do
  @moduledoc """
  Exception used to signal execution errors during Lisp evaluation.

  This exception is used internally by the `tool_executor` and `ToolNormalizer`
  to propagate structured errors (like unknown tools or tool failures)
  out of the evaluation loop and into the `Step` failure result.
  """
  defexception [:reason, :message, :data]
end