Function parse_instrument_closes 

pub fn parse_instrument_closes(
    market_id: &str,
    def: &MarketDefinition,
    ts_event: UnixNanos,
    ts_init: UnixNanos,
) -> Vec<InstrumentClose>

Produces [InstrumentClose] events from a market definition’s runner statuses.

Winners and placed runners get close price 1.0; losers and removed runners get close price 0.0. Active runners produce no close event.