Function provider_runtime_options_for_alias 

pub fn provider_runtime_options_for_alias(
    config: &Config,
    family: &str,
    alias: &str,
) -> ModelProviderRuntimeOptions

Build runtime options for a specific dotted provider alias (<family>.<alias>). Mirrors provider_runtime_options_for_agent but keyed on the typed provider entry directly, so routed providers can resolve their alias-specific endpoint URI and other typed extras without going through an owning agent.