/** Full lowercase hex SHA-256 digest of `input`. */
export declare function sha256Hex(input: string): string;
/**
 * Truncated SHA-256 hex digest — the first `length` hex chars (default 16).
 * Used for stable short identifiers (workspace hashes, token ids, coordinator
 * home dirs) where collision risk at 16 hex chars (64 bits) is negligible.
 */
export declare function shortHash(input: string, length?: number): string;
