/**
 * Canonical message-family set for the Nano agentic protocol.
 *
 * This is the single source of truth every family module keys off — S1's
 * `registerFamilyHandler(family, handler)` seam, the frame codec, and each
 * per-family module all derive their family key from {@link MESSAGE_FAMILIES}.
 * Do not fork this list; extend it here.
 *
 * Directions (informational — the codec is direction-agnostic):
 *  - `register` / `heartbeat` / `deregister` — worker → hub (presence)
 *  - `serve`                                 — hub → worker (assigned tokens)
 *  - `demand`                                — hub → observers (demand×supply)
 *  - `blackboard`                            — both directions (coordination)
 *  - `relay`                                 — both directions (terminal bytes)
 *  - `claim` / `release`                     — worker → hub (job ownership)
 */
export declare const MESSAGE_FAMILIES: readonly ["register", "heartbeat", "deregister", "serve", "demand", "blackboard", "relay", "claim", "release"];
export type MessageFamily = (typeof MESSAGE_FAMILIES)[number];
export declare function isMessageFamily(value: unknown): value is MessageFamily;
/**
 * Stable on-wire codes for each family. Codes are part of the wire contract and
 * MUST NOT be renumbered; only append new families with new, unused codes.
 */
export declare const FAMILY_CODES: {
    readonly register: 1;
    readonly heartbeat: 2;
    readonly deregister: 3;
    readonly serve: 4;
    readonly demand: 5;
    readonly blackboard: 6;
    readonly relay: 7;
    readonly claim: 8;
    readonly release: 9;
};
export declare function familyForCode(code: number): MessageFamily | undefined;