Function selected_materialization_task_bytes 

pub fn selected_materialization_task_bytes(
    task: &ReplicatedTextMaterializationTask,
) -> Result<u64, ReplicatedTextContractError>

Computes the exact executable storage charged to one selected task.

Direct tasks retain their admitted physical or derived output bytes. Transform tasks replace those bytes with the packed weight and exactly the companion roles selected by the executable format.