Function get_boot_parameters 

pub async fn get_boot_parameters(
    infra: &InfraContext<'_>,
    token: &str,
    params: &GetBootParametersParams,
) -> Result<Vec<BootParameters>, Error>

Fetch BSS boot parameters for the resolved target nodes.

Targets are resolved from params in the node_ops::resolve_target_nodes priority order (host expression, then group_name, then the settings_group_name fallback from cli.toml). An empty resolution returns BadRequest rather than silently querying nothing; otherwise the caller’s access to every resolved xname is validated before hitting the backend.