/** Rerun-attempt supersession guard for the upserted PR comment.
 *
 *  `rerun_failed_jobs` re-executes the same workflow run with an incremented
 *  `run_attempt`. Each attempt publishes its own durable report (the receipt
 *  embeds head SHA + run id + run attempt) and then upserts the single
 *  marker comment. Deliveries can arrive out of order — a network retry from
 *  attempt 1 may land after attempt 2 already published its verdict — and an
 *  unguarded upsert would then overwrite the newer verdict with the stale one.
 *
 *  The comment therefore records which attempt wrote it, and the upsert
 *  refuses to overwrite a comment written by a LATER attempt of the SAME run.
 *  Attempts are only ordered within one run id; a different run id is a
 *  different workflow run whose delivery always supersedes. */
export type RunAttemptReceipt = {
    runId: string;
    runAttempt: string;
};
/** Hidden marker the comment body carries so a later delivery can tell which
 *  attempt published the comment it is about to overwrite. */
export declare function formatRunAttemptReceiptMarker(receipt: RunAttemptReceipt): string;
/** The attempt receipt recorded in an existing comment body, or null when the
 *  comment predates the receipt (or was not written by this action). */
export declare function parseRunAttemptReceiptMarker(commentBody: string): RunAttemptReceipt | null;
/** True when this delivery may overwrite the existing comment. False only for
 *  the stale case: the existing comment was written by a strictly greater
 *  attempt of the SAME run. Missing/legacy receipts, equal attempts
 *  (idempotent re-delivery), and other run ids all overwrite. */
export declare function shouldSupersedeExistingComment(options: {
    existingCommentBody: string | null | undefined;
    runId: string;
    runAttempt: string;
}): boolean;