@type t() :: %MingaAgent.Autobiography.Entry{
  assistant_text: String.t() | nil,
  occurred_at: DateTime.t(),
  path: String.t(),
  session_id: String.t(),
  thinking: String.t() | nil,
  tool_call_id: String.t() | nil,
  tool_name: String.t() | nil,
  user_request: String.t() | nil
}