import type { Command } from 'commander';
/** Test-only: the capture slot and the once-per-invocation latch are module state. */
export declare function resetNoticeState(): void;
/** Records the first notice seen; printing is deferred so it lands at the end of a command. */
export declare function captureNotice(headers: Headers): void;
/** Advisory only, never changes stdout, the exit code, or control flow. */
export declare function emitNotice(): void;
/** For commands that are the fix themselves, such as `upgrade`, where the nudge is noise. */
export declare function suppressNotice(): void;
/** postAction covers clean completions, the exit hook covers the process.exit and rejection paths, the latch keeps it to one. */
export declare function installNoticeEmit(program: Command): () => void;