/** Default ack timeout for MessageChannel transport in milliseconds. */
export const DEFAULT_ACK_TIMEOUT_MS = 5000;

/** Default maximum retries for MessageChannel transport. */
export const DEFAULT_MAX_RETRIES = 3;

/** Default nonce dedup window size (number of nonces to track). */
export const DEFAULT_NONCE_WINDOW_SIZE = 1000;

/** Transport envelope version. */
export const ENVELOPE_VERSION = 1 as const;