import { type CborValue } from "./canonical-cbor.js";
/** ABI v3 error codes [echo docs/spec/SPEC-0009-wasm-abi-v3.md@2048da5c]. */
export declare const ABI_ERROR_CODES: {
    readonly INVALID_INTENT: 2;
    readonly NOT_SUPPORTED: 5;
    readonly CODEC_ERROR: 6;
    readonly UNSUPPORTED_QUERY: 11;
    readonly FORBIDDEN_CONTROL_INTENT: 19;
};
export declare const ABI_ERROR_NAMES: Readonly<Record<number, string>>;
/** Envelope-level observe operation names (pre-observer-plan convention). */
export declare const STRUCTURAL_HISTORY_OBSERVE_OPERATIONS: {
    readonly intentOutcome: "intentOutcome";
    readonly structuralReadings: "structuralReadings";
    readonly retainedEvidencePosture: "retainedEvidencePosture";
};
/**
 * EINT v1 operation ids for Graft's internal fake Echo witness.
 * The real authority belongs in Echo's released contract-host generator.
 */
export declare const STRUCTURAL_HISTORY_WITNESS_INTENT_OPERATION_IDS: {
    readonly recordGitWarpImportBatch: 2574440766;
};
/** Default basis id used by the witness fixture space. */
export declare const DEFAULT_STRUCTURAL_HISTORY_BASIS_ID = "basis-live";
export declare class EchoEnvelopeCodecError extends Error {
    constructor(message: string);
}
export declare function packStructuralHistoryIntentV1(opId: number, vars: Uint8Array): Uint8Array;
export interface StructuralHistoryIntentEnvelope {
    readonly opId: number;
    readonly vars: Uint8Array;
}
export declare function unpackStructuralHistoryIntentV1(envelope: Uint8Array): StructuralHistoryIntentEnvelope;
export interface StructuralHistoryObserveRequest {
    readonly operationName: string;
    readonly vars: CborValue;
}
export declare function encodeStructuralHistoryObserveRequest(request: StructuralHistoryObserveRequest): Uint8Array;
export declare function decodeStructuralHistoryObserveRequest(bytes: Uint8Array): StructuralHistoryObserveRequest;
export type StructuralHistoryWireResponse = {
    readonly ok: true;
    readonly fields: Readonly<Record<string, CborValue>>;
} | {
    readonly ok: false;
    readonly code: number;
    readonly message: string;
};
export declare function encodeStructuralHistoryOkResponse(fields: Readonly<Record<string, CborValue>>): Uint8Array;
export declare function encodeStructuralHistoryErrorResponse(code: number, message: string): Uint8Array;
export declare function decodeStructuralHistoryIntentResponse(bytes: Uint8Array): StructuralHistoryWireResponse;
export declare function decodeStructuralHistoryObserveResponse(bytes: Uint8Array): StructuralHistoryWireResponse;
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