Function graphs_ready_after_fp8_kv_cal 

pub fn graphs_ready_after_fp8_kv_cal<I>(states: I) -> bool
where
    I: IntoIterator<Item = Option<bool>>,

Lift CUDA-graph suppression once every calibrating layer has frozen.

None = this layer does not calibrate (SSM, BF16 KV, static scales). Some(false) = still warming. Vacuously true when no layer calibrates. Must not use find_map: a BF16 boundary layer reporting Some(false) would shadow later FP8 layers that already froze.