/**
 * The one wave topic (T12682).
 *
 * A Lead listens on `epic-<epicId>.wave-<n>`, where `n` is the wave number
 * `cleo orchestrate waves <epic>` prints (from 1). A spawned worker must
 * publish on exactly that topic. Workers used to be told
 * `epic-<epicId>.wave-<last 4 digits of their task id>`, so a Lead never heard
 * them. Both sides now derive the topic here, from the same wave plan
 * ({@link planEpicWaves}).
 *
 * @task T12682
 */
import type { DataAccessor } from '../store/data-accessor.js';
/**
 * The wave topic a Lead listens on and its workers publish to.
 *
 * @param epicId - Parent epic.
 * @param waveNumber - Wave number as `cleo orchestrate waves` prints it (from 1).
 * @returns `epic-<epicId>.wave-<waveNumber>`.
 * @task T12682
 */
export declare function waveTopic(epicId: string, waveNumber: number): string;
/**
 * The epic's coordination topic (orchestrator broadcasts).
 *
 * @param epicId - Parent epic.
 * @returns `epic-<epicId>.coordination`.
 * @task T12682
 */
export declare function coordinationTopic(epicId: string): string;
/**
 * The wave a task belongs to in its epic's plan, or null when the task is not
 * scheduled (done, cancelled, or not a child of the epic).
 *
 * @param epicId - Parent epic.
 * @param taskId - Task to locate.
 * @param accessor - Task accessor.
 * @param cwd - Project root, for the ranking context's focus phase (T12501).
 * @returns The wave number `cleo orchestrate waves` prints for it, or null.
 * @task T12682
 */
export declare function waveNumberOfTask(epicId: string, taskId: string, accessor: DataAccessor, cwd?: string): Promise<number | null>;
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