/**
 * saga.repair — detach an I5-violating parent edge from a Saga.
 *
 * A Saga (`type='saga'`) MUST be a root node. This verb repairs a saga that
 * carries an invalid `parentId` by clearing that parent edge:
 *
 * 1. Loads the saga and confirms `type='saga'`.
 * 2. If `parentId` is `null`, returns idempotently (no-op).
 * 3. Otherwise: clears `parentId` to `null`.
 *
 * The verb is **idempotent**: calling it twice on the same saga yields the
 * same final state and the second call reports `repaired: false`.
 *
 * @task T10117 — sagaList loud-filter + repair verb
 * @saga T10113
 * @epic T10209
 * @see ADR-073-above-epic-naming.md §1.2 — invariant I5
 */
import { type EngineResult } from '../engine-result.js';
/** Input parameters for {@link repairSaga}. */
export interface RepairSagaParams {
    /** The saga task ID to repair (must have `labels.includes('saga')`). */
    sagaId: string;
}
/** Result payload for {@link repairSaga}. */
export interface RepairSagaResult {
    /** The saga that was inspected. */
    sagaId: string;
    /**
     * `true` when the call performed a state change, `false` when the saga
     * already satisfied I5.
     */
    repaired: boolean;
    /**
     * The `parentId` value that was detached. `null` when no detach was needed.
     */
    detachedParentId: string | null;
    /**
     * Free-form notes the caller can surface in CLI output, e.g. when the
     * former parent could not be found and only the detach half completed.
     */
    note?: string;
}
/**
 * Repair an I5-violating saga by detaching its `parentId`.
 *
 * @param projectRoot - Absolute path to the project root.
 * @param params - Identifies the saga to repair.
 * @returns The repaired state, including whether any mutation occurred.
 */
export declare function repairSaga(projectRoot: string, params: RepairSagaParams): Promise<EngineResult<RepairSagaResult>>;
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