import type { CalibrationReport, SprintRecord, SprintVelocity, SprintVelocityReport } from "./types.js";
export declare const SPRINTS_FILE = "sprints.jsonl";
export declare function sprintsPath(root: string): string;
export declare function startSprint(root: string, sprintId: string, taskIds: string[]): Promise<SprintRecord>;
export declare function closeSprint(root: string, sprintId: string): Promise<SprintRecord>;
export declare function listSprints(root: string): Promise<SprintRecord[]>;
export declare function computeSprintVelocity(root: string, sprintId: string): Promise<SprintVelocity>;
export declare function velocityTrend(root: string, limit: number): Promise<SprintVelocityReport>;
export declare function calibrationReport(root: string): Promise<CalibrationReport>;