export interface TranscriptMessage {
    role: string;
    text: string;
}
export interface ReadTranscriptOptions {
    sessionStateDir?: string;
    maxBytes?: number;
    maxMessages?: number;
}
export declare const DEFAULT_MAX_BYTES: number;
export declare const DEFAULT_MAX_MESSAGES = 200;
export declare function isValidSessionId(uuid: string): boolean;
export declare function sessionEventsPath(uuid: string, base?: string): string;
/** Newest session-state dir by mtime — used when the wrapper triggers a review
 *  post-exit and doesn't know the just-finished session's UUID. */
export declare function latestSessionId(base?: string): string | null;
/** All session dir names under the session-state base (for before/after diff). */
export declare function listSessionIds(base?: string): string[];
/** The session that appeared since `before` — i.e. the one the just-finished
 *  headless `copilot -p` run created. Returns null if none is new, so the
 *  wrapper SKIPS rather than guessing the wrong session. */
export declare function newestSessionSince(before: string[], base?: string): string | null;
export declare function parseTranscript(raw: string): TranscriptMessage[];
export declare function readSessionTranscript(uuid: string, options?: ReadTranscriptOptions): TranscriptMessage[];