@type status() :: :running | :ok | :error | atom() | String.t()

@type t() :: %Vibe.UI.ToolEvent{
  args: term(),
  id: String.t() | nil,
  name: atom() | String.t() | nil,
  output: term(),
  output_format: atom() | nil,
  output_parts: [map()] | nil,
  output_truncation: :head | :tail | nil,
  phase: atom() | nil,
  status: status() | nil
}