/**
 * Save a sprint review markdown file to disk.
 * Uses mkdir -p semantics (idempotent). Overwrites any existing review for the same contract.
 */
export declare function saveReview(projectRoot: string, contractId: string, content: string): Promise<void>;
/**
 * Read a sprint review by contract ID.
 * Returns null if not found (reviews may not exist for all sprints).
 */
export declare function readReview(projectRoot: string, contractId: string): Promise<string | null>;
/**
 * List all saved review contract IDs, sorted by filename.
 */
export declare function listReviews(projectRoot: string): Promise<string[]>;
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