/** Plan 步骤 */
interface PlanStep {
    description: string;
    status: 'pending' | 'done';
    keywords?: string[];
}
/** Plan 对象 */
interface Plan {
    steps: PlanStep[];
    createdAtIteration: number;
}
/** Trace 统计数据 */
interface TraceStats {
    totalRounds: number;
    thoughtCount: number;
    totalActions: number;
    totalObservations: number;
    reflectionCount: number;
}
/** 工具动作 */
interface ToolAction {
    tool: string;
    params?: Record<string, unknown>;
}
/** ActiveContext 追踪接口 */
export interface ActiveTrace {
    expectPlan?(): void;
    getPlan?(): Plan | null;
    getPlanStepsMutable?(): PlanStep[];
    getCurrentRoundActions?(): ToolAction[];
    getStats?(): TraceStats;
}
/** checkPlanning 的状态参数 */
interface PlanCheckState {
    metrics: {
        iteration: number;
    };
    budget: {
        maxIterations: number;
    };
    strategy: {
        replanInterval?: number;
    };
}
export declare class PlanTracker {
    #private;
    /** 获取计划进度 */
    get progress(): {
        coveredSteps: number;
        totalSteps: number;
        deviationScore: number;
        unplannedActions: number;
        lastReplanIteration: number | null;
        consecutiveOffPlan: number;
    };
    /**
     * 检查是否需要触发规划 + 生成规划 nudge
     *
     * @param state 从 ExplorationTracker 传入
     * @param trace ActiveContext 实例
     * @returns |null}
     */
    checkPlanning(state: PlanCheckState, trace: ActiveTrace | null): {
        type: string;
        text: string;
    } | null;
    /**
     * 更新计划进度（从 ReasoningLayer 迁入）
     * 将本轮工具调用与 plan 步骤进行模糊匹配
     *
     * @param trace ActiveContext 实例
     */
    updatePlanProgress(trace: ActiveTrace | null): void;
    /**
     * 推理质量评分
     * @returns }
     */
    getQualityMetrics(trace: ActiveTrace | null): {
        score: number;
        breakdown: Record<string, number>;
    };
}
export {};