/** `ztrack waiver sign|clear|status|migrate` — the eslint-`disable`-style escape: an authority
 *  acknowledges ONE specific check finding (by code, optionally an AC, optionally pinned to one
 *  occurrence with `ref:`). The core downgrades the matching finding to 'acknowledged'; a waiver
 *  matching nothing is `waiver_unused`; an unpinned waiver that could pin is `waiver_overbroad`.
 *  Returns true once it has handled the `waiver` command. */
export declare function handleWaiverCommand(args: string[]): Promise<boolean>;