//! Clock and delay test doubles.
//!
//! `FixedClock` always reports the same instant — used by every use-case unit
//! test so timestamps are deterministic. `NoOpDelay` collapses retry backoff to
//! zero so the suite never pays the real sleeps; timing is still verified
//! end-to-end against the real `TokioDelay` adapter.
use Duration;
use Timestamp;
use crate;
;
;