@type t() :: %ClaudeWrapper.History.SessionSummary{
  first_timestamp: String.t() | nil,
  first_user_preview: String.t() | nil,
  last_timestamp: String.t() | nil,
  message_count: non_neg_integer(),
  project_slug: String.t(),
  session_id: String.t(),
  size_bytes: non_neg_integer(),
  title: String.t() | nil,
  total_cost_usd: float() | nil,
  total_tokens: non_neg_integer() | nil
}