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ReplayService

Struct ReplayService 

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pub struct ReplayService;
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Replay service — reconstructs flow state at any version.

Assumes each TRANSITION event stores a full snapshot of the state. Returns the latest matching state at or before the requested version.

If the event log is later changed to store diffs instead of full snapshots, use ProjectionReplayService with a fold/reducer instead.

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impl ReplayService

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pub fn state_at_version( events: &[VersionedTransitionEvent], flow_id: &str, target_version: u32, ) -> Option<String>

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