Function arbos_from_input_system 

pub fn arbos_from_input_system<S: SystemStateBackend, B: Burner>(
    backend: &mut S,
    burner: B,
) -> Result<ArbosState<'static, Detached, B>, ArbosStateError>

Open a detached ArbosState backed by any SystemStateBackend.

Behaviourally identical to arbos_from_input but reads the version slot via the non-journaled SystemStateBackend::sload_system path. Intended for callers that want to skip the EVM journal — typically precompile handlers caching the ArbosState across calls within a single block.