export interface AuditRemoteFile {
    key: string;
    etag?: string;
    size: number;
    phase: "preflight" | "execution";
}
export interface AuditPassEvent {
    key: string;
    phase: "push" | "pull";
    bytes: number;
    deleted?: boolean;
    contentHash?: string;
    etag?: string;
}
/** A path-free, append-only audit projection for one scoped sync pass. */
export declare class SyncRunnerHashAudit {
    private readonly fd;
    private readonly etagsByKeyHash;
    constructor(filename: string);
    recordRemoteFile(file: AuditRemoteFile): void;
    recordPassEvent(event: AuditPassEvent): void;
    close(): void;
    private write;
}
export declare function hashNormalizedKey(key: string): string;
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