Method TotalCost

pkg/session/session.go:966–981

TotalCost computes the total cost of a session by walking all messages, sub-sessions, and summary items. It does not use the session-level Cost field, which exists only for backward-compatible persistence.

()

// sub-sessions, and summary items. It does not use the session-level Cost
// field, which exists only for backward-compatible persistence.
func (s *Session) TotalCost() float64 {
	s.mu.RLock()
	defer s.mu.RUnlock()

	var cost float64
	for _, item := range s.Messages {
		switch {
		case item.IsMessage():
			cost += item.Message.Message.Cost
		case item.IsSubSession():
			cost += item.SubSession.TotalCost()
		}
		cost += item.Cost
	}
	return cost
}

// OwnCost returns only this session's direct cost: its own messages and
// item-level costs (e.g. compaction). It excludes sub-session costs.