//! Deterministic simulation testing for Fusee.
//!
//! The real shard runtime, journal machines and Rust SDK run inside one
//! thread under a seeded scheduler. The disk tears writes, loses unflushed
//! data at crashes and fails flushes; messages between shards are delayed
//! and lost with the process. A mock external service logs every call. A
//! seed reproduces a run exactly.
//!
//! The checkers, after every recovery and at the end:
//!
//! - every acknowledged start and signal exists;
//! - a result once reported never changes;
//! - no external call was made with inputs the recovered journal
//! contradicts (one idempotency key, two different inputs);
//! - once faults stop, every workflow finishes.
//!
//! [`scenario`] runs your own workflows the same way.
pub use Scenario;
pub use ;
/// Waits `d` of simulated time, inside a step body under the simulator.
pub async