import type { FoldTechnicalResult } from '../../types/ssr-migration.js';
export type { FoldTechnicalResult };
/**
 * Fold technical.md content into spec.md under a `## Technical` section.
 * Idempotent: returns already_unified if spec.md already has `## Technical`.
 * On success: writes unified spec.md and deletes technical.md.
 *
 * @param specDir      Absolute path to the spec directory.
 * @param projectPath  Project root for git-aware unlink (optional).
 */
export declare function foldTechnicalIntoSpec(specDir: string, projectPath?: string): Promise<FoldTechnicalResult>;
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