Function apply_hw_configuration 

pub async fn apply_hw_configuration(
    backend: &StaticBackendDispatcher,
    mode: HwClusterMode,
    shasta_token: &str,
    target_hsm_group_name: &str,
    parent_hsm_group_name: &str,
    pattern: &str,
    dryrun: bool,
    create_target_hsm_group: bool,
    delete_empty_parent_hsm_group: bool,
) -> Result<ApplyHwResult, Error>

Core logic for hardware cluster pin/unpin — no terminal interaction.