/// Read-only tools called before the query. Never add a tool that deploys, destroys,
/// scales, starts, or stops anything: those are billed or destructive.
fn status_tools(self) -> &'static [&'static str] {
    match self {
        Rig::Local => &["gpu_status", "model_server_status", "model_info"],
        Rig::Cloudrun => &[
            "cloudrun_status",
            "cloudrun_get_system_status",
            "cloudrun_get_model_details",
        ],
    }
}