Function run_shared_capital_streaming_simulation 

pub fn run_shared_capital_streaming_simulation<G>(
    bars: &[PortfolioBar],
    generator: G,
    config: BacktestConfig,
) -> Result<BacktestResult, BacktestError>
where
    G: for<'a> Next<&'a PortfolioBar, Output = StrategySignal>,

Run shared-capital streaming simulation for batch↔streaming parity.