Function black_box_execute 

pub fn black_box_execute(
    t: &FlashTimings,
    plan: &[TimedCmd],
    victim_die: u32,
    victim_read: usize,
) -> Vec<u64>

Tier C — the black-box SSD: a HIDDEN FTL fires an un-suspendable erase on victim_die just before the victim_read-th read (0-based, over reads only), so that read stalls behind the full tBERS. Returns each read’s completion cycle. This models what a commodity drive does; the point is that a read now BLOWS its latency bound — proving no static guarantee survives once reclamation timing is not host-owned.