/**
 * Routes all `fetch()` calls through an HTTP/HTTPS proxy when standard
 * proxy env vars are set (`HTTPS_PROXY`, `https_proxy`, `HTTP_PROXY`,
 * `http_proxy`). No-op when none are set. Invalid URLs are logged and
 * skipped so the CLI keeps running.
 *
 * Call once at CLI startup, before any network activity. `undici` is
 * imported lazily so invocations without a proxy skip loading it.
 */
export declare const bootstrapProxy: () => Promise<void>;