/**
 * ACP carrier adapter for Evidence Carrier Contract.
 *
 * v0.11.1: header-only embed transport via PEAC-Receipt (compact JWS).
 * All size limits enforce the 8 KB header ceiling (acp_headers).
 * Reference mode is not supported; receipt_jws is required.
 */
import type { PeacEvidenceCarrier, CarrierMeta, CarrierValidationResult, CarrierAdapter } from '@peac/kernel';
/** ACP carrier size limits */
export declare const ACP_CARRIER_LIMITS: {
    readonly embed: 65536;
    readonly headers: 8192;
};
/** Simple header map */
export type HeaderMap = Record<string, string>;
/** ACP message with headers and optional body */
export interface AcpMessageLike {
    headers?: HeaderMap;
    body?: Record<string, unknown>;
    [key: string]: unknown;
}
/** Extraction result */
export interface AcpExtractResult {
    receipts: PeacEvidenceCarrier[];
    meta: CarrierMeta;
}
/** Async extraction result with consistency violations */
export interface AcpExtractAsyncResult extends AcpExtractResult {
    violations: string[];
}
/**
 * Attach carrier to ACP headers.
 *
 * Sets PEAC-Receipt header with compact JWS.
 * Requires receipt_jws; reference mode is not supported in v0.11.1.
 */
export declare function attachCarrierToACPHeaders(headers: HeaderMap, carrier: PeacEvidenceCarrier): HeaderMap;
/**
 * Attach carrier to ACP message via headers.
 *
 * Enforces header-sized limits (8 KB) since ACP v0.11.1 uses
 * PEAC-Receipt header as the sole transport surface.
 */
export declare function attachCarrierToACPMessage(msg: AcpMessageLike, carrier: PeacEvidenceCarrier): AcpMessageLike;
/**
 * Extract carrier from ACP headers (sync).
 *
 * Reads PEAC-Receipt header as compact JWS and computes receipt_ref.
 * Note: receipt_ref computation requires async; sync version returns a
 * placeholder. Use extractCarrierFromACPHeadersAsync for full validation.
 */
export declare function extractCarrierFromACPHeaders(headers: HeaderMap): AcpExtractResult | null;
/**
 * Extract carrier from ACP headers (async).
 *
 * Computes receipt_ref from the JWS and validates consistency.
 */
export declare function extractCarrierFromACPHeadersAsync(headers: HeaderMap): Promise<AcpExtractAsyncResult | null>;
/**
 * CarrierAdapter implementation for ACP messages.
 */
export declare class AcpCarrierAdapter implements CarrierAdapter<AcpMessageLike, AcpMessageLike> {
    extract(input: AcpMessageLike): {
        receipts: PeacEvidenceCarrier[];
        meta: CarrierMeta;
    } | null;
    attach(output: AcpMessageLike, carriers: PeacEvidenceCarrier[], meta?: CarrierMeta): AcpMessageLike;
    validateConstraints(carrier: PeacEvidenceCarrier, meta: CarrierMeta): CarrierValidationResult;
}
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