/**
 * The three QoS lanes carried on the one agentic channel, in STRICT priority
 * order: control/facts > interactive > bulk.
 *
 * The ordering is the contract: a bulk-output storm (relay chunks) must never
 * head-of-line-block a heartbeat or a blackboard write. The scheduler that
 * enforces this lives in S5; this module owns the canonical lane set, their
 * wire codes, and the priority comparison every scheduler derives from.
 */
export declare const QOS_LANES: readonly ["control", "interactive", "bulk"];
export type QosLane = (typeof QOS_LANES)[number];
export declare function isQosLane(value: unknown): value is QosLane;
/**
 * On-wire lane codes. The numeric value is also the priority rank: a LOWER
 * code is HIGHER priority (control=0 outranks bulk=2). Do not renumber.
 */
export declare const LANE_CODES: {
    readonly control: 0;
    readonly interactive: 1;
    readonly bulk: 2;
};
export declare function laneForCode(code: number): QosLane | undefined;
/** Priority rank of a lane; lower is dispatched first. */
export declare function lanePriority(lane: QosLane): number;
/**
 * Canonical scheduler ordering derived from the lane priorities: control before
 * interactive before bulk, ties broken by ascending `seq` so a single lane
 * drains in emission order. Returns <0 when `a` should be dispatched before `b`.
 */
export declare function compareFrameOrder(a: {
    readonly lane: QosLane;
    readonly seq: number;
}, b: {
    readonly lane: QosLane;
    readonly seq: number;
}): number;