@type runtime_state() :: %{
  optional(:tool_calls) => non_neg_integer(),
  optional(:total_tokens) => non_neg_integer(),
  optional(:elapsed_ms) => non_neg_integer(),
  optional(:accumulated_cost_usd) => float(),
  optional(:cost_supported?) => boolean()
}

@type violation() :: %{
  policy: String.t(),
  kind: atom(),
  action: AgentSessionManager.Policy.Policy.on_violation(),
  details: map()
}