export type TaskStateBucket = "done" | "blocked" | "active" | "todo";
export declare function classifyTaskState(status: unknown): TaskStateBucket;
export type TaskStatusCounts = {
    total: number;
    done: number;
    blocked: number;
    active: number;
    todo: number;
};
export declare function summarizeTaskStatuses(taskStatuses?: unknown[]): TaskStatusCounts;
export type MilestoneRollupStatus = "planned" | "in_progress" | "at_risk" | "completed";
export type WorkstreamRollupStatus = "not_started" | "active" | "blocked" | "done";
export declare function computeMilestoneRollup(taskStatuses?: unknown[]): TaskStatusCounts & {
    status: MilestoneRollupStatus;
    progressPct: number;
};
export declare function computeWorkstreamRollup(taskStatuses?: unknown[]): TaskStatusCounts & {
    status: WorkstreamRollupStatus;
    progressPct: number;
};
export type TaskCompletionReadiness = "ready" | "needs_proof" | "needs_review";
export interface TaskCompletionReadinessResult {
    ready: boolean;
    status: TaskCompletionReadiness;
    hasArtifact: boolean;
    hasSchemaValidatedArtifact: boolean;
    hasQualityScore: boolean;
    qualityScore: number | null;
    qualityThreshold: number;
    missingItems: string[];
    warnings: string[];
}
/**
 * Evaluate whether a task has sufficient proof chain evidence to be marked
 * complete. In phase 1 this is advisory (warn-only); callers decide whether
 * to hard-block or soft-warn based on workspace config.
 */
export declare function computeTaskCompletionReadiness(input: {
    artifacts?: Array<{
        schema_validated?: boolean;
        atomic_unit_type?: string;
    }>;
    qualityScore?: number | null;
    qualityThreshold?: number;
    hasOutcomeEvent?: boolean;
}): TaskCompletionReadinessResult;
export type EvalPassRateDriftResult = {
    alert: boolean;
    baselinePassRate: number;
    rollingPassRate7d: number;
    dropPct: number;
    thresholdDropPct: number;
    baselineSamples: number;
    rollingSamples: number;
};
export declare function detectEvalPassRateDrift(input: {
    passRates: unknown[];
    thresholdDropPct?: number;
    rollingWindowDays?: number;
    baselineWindowDays?: number;
}): EvalPassRateDriftResult | null;