Function query_crypto_orders_for_startup 

pub async fn query_crypto_orders_for_startup(
    backend: &BackendConn,
    acc_id: u64,
    trd_cache: &TrdCache,
) -> Result<Vec<CachedOrder>>

Startup-only recent-order read. C++ permits this read before trade unlock; an empty cipher is omitted from CryptoMsgHeader while strict/write paths continue to require the cached cipher.