/**
 * The versioned managed-v1 SDK seam.
 *
 * This is intentionally separate from index.ts, whose newline-delimited IPC
 * protocol is the legacy Bun app contract. The host and this module both own
 * the managed-v1 length prefix and canonical JSON rules.
 */
export declare const MANAGED_V1_VERSION: "managed-v1";
export declare const MAX_FRAME_BYTES: number;
export type ManagedErrorFamily = "protocol" | "limit" | "epoch" | "app";
export interface ManagedCapabilityRequest {
    type: "capability_request";
    id: string;
    nonce: string;
    epoch: number;
    capability: string;
    payload: unknown;
    timeout_ms: number;
}
export interface ManagedCapabilityResponse {
    type: "capability_response";
    id: string;
    nonce: string;
    epoch: number;
    success: boolean;
    payload: unknown;
}
export declare class ManagedProtocolError extends Error {
    readonly family: ManagedErrorFamily;
    constructor(family: ManagedErrorFamily, message: string);
}
export declare function encodeManagedFrame(value: unknown): Buffer;
export declare function decodeManagedFrame(frame: Buffer): unknown;
export declare class SessionNonce {
    readonly value: string;
    readonly version: typeof MANAGED_V1_VERSION;
    private constructor();
    static generate(): SessionNonce;
}