/**
 * Relay client transport for cross-machine presence (ADR 0016, phase 2c).
 *
 * The hooks are short-lived processes, so a live WebSocket needs a home: a
 * small per-repo-per-machine DAEMON that the hooks lazy-start
 * (`ensureRelayDaemon`) and that exits itself when the machine goes idle.
 * The daemon:
 *
 *   - derives the room credentials from the repo identity (root-commit SHA +
 *     origin URL + optional committed `.harnery/presence-salt`)
 *   - holds the socket open with auto-reconnect + jittered backoff
 *   - watches the active V3 ledger and publishes the encrypted presence blob on
 *     change (debounced), plus a 60s keepalive so peers' staleness math works
 *   - decrypts received peer frames and writes them to
 *     `.harnery/presence/remote/<machine>.json`, where `readRemoteMachines`
 *     merges them with the git-refs floor (freshest source per machine wins)
 *   - exits after ~5 minutes with no live local sessions (hooks restart it
 *     when sessions return), and exits if its pid file is superseded
 *
 * Everything fails silent; the git-refs transport is always the floor.
 * Requires a global WebSocket (Bun, Node >= 21, Workers) — on older Nodes the
 * daemon refuses to start and presence stays on git-refs.
 */
/**
 * Lazy-start the relay daemon for this repo if a relay is configured and no
 * live daemon already owns the pid file. Called from the hook path — must
 * return fast and never throw.
 */
export declare function ensureRelayDaemon(coordRoot: string): void;
/** Foreground daemon loop (spawned detached by ensureRelayDaemon). */
export declare function runRelayDaemon(coordRoot: string): Promise<number>;
export declare function appendPresenceRelayDiagnostic(coordRoot: string, event: string, fields?: Record<string, unknown>): "shared" | "legacy";
/** Daemon status for `presence peers`/doctor surfaces. */
export declare function relayDaemonStatus(coordRoot: string): {
    running: boolean;
    pid?: number;
    url?: string;
    started_at?: string;
};
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