/**
 * Pipeline Engine Operations — EngineResult wrapper layer.
 *
 * Contains all phase domain EngineResult wrappers migrated from
 * `packages/cleo/src/dispatch/engines/pipeline-engine.ts` (ENG-MIG-11 / T1578).
 *
 * Each exported function wraps a core phases primitive with EngineResult
 * (ADR-057 D1 uniform `(projectRoot, params)` signature where applicable).
 *
 * Importable from `@cleocode/core/internal` so the CLI dispatch layer can
 * call them without any intermediate engine file.
 *
 * @module pipeline/engine-ops
 * @task T1578 — ENG-MIG-11
 * @epic T1566
 */
import { type EngineResult } from '../engine-result.js';
/**
 * List all project phases with status summaries.
 *
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with phase list and summary
 * @task T1578
 */
export declare function phaseList(projectRoot?: string): Promise<EngineResult>;
/**
 * Show details of a specific phase by slug, or the current phase if omitted.
 *
 * @param phaseId - Phase slug (optional; defaults to current phase)
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with phase details
 * @task T1578
 */
export declare function phaseShow(phaseId?: string, projectRoot?: string): Promise<EngineResult>;
/**
 * Set the current phase, with optional rollback or dry-run support.
 *
 * @param params - Phase set parameters
 * @param params.phaseId - Target phase slug (required)
 * @param params.rollback - Allow rolling back to an earlier phase
 * @param params.force - Force the operation (required for rollback)
 * @param params.dryRun - Preview the operation without committing
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with set operation result
 * @task T1578
 */
export declare function phaseSet(params: {
    phaseId: string;
    rollback?: boolean;
    force?: boolean;
    dryRun?: boolean;
}, projectRoot?: string): Promise<EngineResult>;
/**
 * Start a pending phase (transitions it to active).
 *
 * @param phaseId - Phase slug to start (required)
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with start timestamp
 * @task T1578
 */
export declare function phaseStart(phaseId: string, projectRoot?: string): Promise<EngineResult>;
/**
 * Complete an active phase (transitions it to completed).
 *
 * @param phaseId - Phase slug to complete (required)
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with completion timestamp
 * @task T1578
 */
export declare function phaseComplete(phaseId: string, projectRoot?: string): Promise<EngineResult>;
/**
 * Advance the project to the next phase in sequence.
 *
 * @param force - Skip completion threshold check (default: false)
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with advance result including previous and next phase slugs
 * @task T1578
 */
export declare function phaseAdvance(force?: boolean, projectRoot?: string): Promise<EngineResult>;
/**
 * Rename a phase and update all task references.
 *
 * @param oldName - Current phase slug (required)
 * @param newName - New phase slug (required; must match `^[a-z][a-z0-9-]*$`)
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with rename result including tasks updated count
 * @task T1578
 */
export declare function phaseRename(oldName: string, newName: string, projectRoot?: string): Promise<EngineResult>;
/**
 * Delete a phase with optional task reassignment.
 *
 * @param phaseId - Phase slug to delete (required)
 * @param params - Delete options
 * @param params.reassignTo - Target phase slug for orphaned tasks
 * @param params.force - Required flag for safety
 * @param projectRoot - Absolute project root path
 * @returns EngineResult with delete result including tasks reassigned count
 * @task T1578
 */
export declare function phaseDelete(phaseId: string, params?: {
    reassignTo?: string;
    force?: boolean;
}, projectRoot?: string): Promise<EngineResult>;
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