Function usage

core/src/orchestration/workflow_budget.rs:152–157

(total: usize)

    use std::sync::atomic::AtomicUsize;

    fn usage(total: usize) -> TokenUsage {
        TokenUsage {
            total_tokens: total,
            ..Default::default()
        }
    }

    #[tokio::test]
    async fn accumulates_and_caps() {