export declare const DURABLE_LEARNING_MEMORY_POLICY_VERSION = "1";
export declare const DURABLE_LEARNING_STATE_MAX_HISTORY = 32;
export declare const DURABLE_LEARNING_STATE_MAX_BYTES: number;
export declare const DURABLE_LEARNING_CLAIM_LEASE_MS: number;
export interface DurableLearningVersions {
    runtimeVersion: string;
    memoryPolicyVersion: string;
}
export type DurableLearningTransitionReason = "first-observation" | "runtime-change" | "memory-policy-change" | "runtime-and-policy-change" | "recovered-corrupt-state";
export interface DurableLearningReviewMetadata {
    reason: DurableLearningTransitionReason;
    previousRuntimeVersion: string | null;
    runtimeVersion: string;
    previousMemoryPolicyVersion: string | null;
    memoryPolicyVersion: string;
}
export interface DurableLearningClaimToken {
    transitionId: string;
    claimId: string;
    ownerId: string;
    runtimeVersion: string;
    memoryPolicyVersion: string;
}
export type DurableLearningCueAttachOutcome = "attached" | "coalesced" | "replaced-stale" | "disabled" | "failed";
export type DurableLearningStateWarningCode = "recovered-corrupt-state" | "unsupported-schema" | "unknown-keys" | "oversize-state" | "state-unavailable";
export type DurableLearningReconcileStatus = DurableLearningCueAttachOutcome | "busy" | "unchanged" | "unsupported" | "invalid-version" | "invalid-owner" | "unavailable";
export interface DurableLearningReconcileResult {
    status: DurableLearningReconcileStatus;
    warningCode?: DurableLearningStateWarningCode;
}
export interface DurableLearningStateSnapshot {
    schemaVersion: 1;
    revision: number;
    observedRuntimeVersion: string;
    observedMemoryPolicyVersion: string;
    currentTransitionId: string | null;
    currentClaimOwnerId: string | null;
    resolvedTransitions: number;
}
interface DurableLearningStateOptions {
    now?: () => Date;
    randomId?: () => string;
    leaseMs?: number;
    withLock?: <T>(filePath: string, fn: () => T) => T;
    writeState?: (filePath: string, contents: string) => void;
}
export declare function isDurableLearningClaimToken(value: unknown): value is DurableLearningClaimToken;
export declare function isDurableLearningReviewMetadata(value: unknown): value is DurableLearningReviewMetadata;
export declare class DurableLearningState {
    private readonly filePath;
    private readonly now;
    private readonly randomId;
    private readonly leaseMs;
    private readonly withLock;
    private readonly writeState;
    constructor(filePath: string, options?: DurableLearningStateOptions);
    static forAgentDir(agentDir: string, options?: DurableLearningStateOptions): DurableLearningState;
    private currentDate;
    private nextId;
    private load;
    private save;
    private newClaim;
    private newTransition;
    private resolveCurrent;
    private initialState;
    private changedReason;
    reconcileClaimAndAttach(versions: DurableLearningVersions, ownerId: string, attachCue: (token: DurableLearningClaimToken, metadata: DurableLearningReviewMetadata) => DurableLearningCueAttachOutcome): DurableLearningReconcileResult;
    private mutateExactClaim;
    renewClaim(token: DurableLearningClaimToken): boolean;
    releaseClaim(token: DurableLearningClaimToken): boolean;
    completeReview(token: DurableLearningClaimToken): boolean;
    readSnapshot(): DurableLearningStateSnapshot | undefined;
    private validToken;
}
export {};
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