Function load_catalog_replay_inputs 

pub fn load_catalog_replay_inputs<B, C>(
    reader: &EventStoreReader<B>,
    catalog: &mut C,
    plan: &ReplayInputPlan,
) -> Result<ReplayInputs, ReplayInputError>
where
    B: EventStore,
    C: ReplayCatalog,

Loads catalog replay inputs from an existing plan.

Event-store entries are returned in durable seq order. Catalog records are loaded through the caller-provided catalog source only; this function does not query live venues or run engine logic.

Errors

Returns an error if a required slice is missing, if catalog loading fails, or if the reader scan fails.