/**
 * Durable identity for the user-visible assistant reply of an explicit VC
 * `im_turn`. The first canonical output wins; exact crash replays reuse the
 * same provider UUID, while changed replays reuse the first durable output.
 */
import type { VcMeetingImTurnOrigin, VcMeetingListenerOutputPlacement } from '../types.js';
import { type VcMeetingActionRef } from './vc-meeting-action-store.js';
export declare const VC_MEETING_LISTENER_PROVIDER_DEDUP_SAFE_MS: number;
export interface VcMeetingImReplyCanonicalOutput {
    targetChatId: string;
    quoteTargetId?: string;
    placement?: VcMeetingListenerOutputPlacement;
    msgType: string;
    content: string;
}
export type VcMeetingImReplyPrepareResult = {
    kind: 'send';
    providerKey: string;
    ref: VcMeetingActionRef;
    replay: boolean;
    /** True only when the provider UUID may already have been accepted. The
     * caller must suppress a second outbound hook while reconciling it. */
    providerReplay: boolean;
    /** Always the first durable output, even when this replay proposed text
     * that differs. Callers must send this value, never their new proposal. */
    canonicalOutput: VcMeetingImReplyCanonicalOutput;
    outputMismatch: boolean;
} | {
    kind: 'succeeded';
    providerKey: string;
    ref: VcMeetingActionRef;
    messageId?: string;
    /** A missing legacy provider ref is reconciled with an already-used UUID;
     * do not emit the outbound hook again if a provider call is required. */
    providerReplay: true;
    canonicalOutput: VcMeetingImReplyCanonicalOutput;
    outputMismatch: boolean;
} | {
    kind: 'conflict';
    reason: 'invalid_origin' | 'output_mismatch' | 'invalid_state';
    detail: string;
};
export interface VcMeetingDeliveryReplyOrigin {
    receiverSessionId: string;
    stableTurnId: string;
    dispatchAttempt: number;
}
export declare function prepareVcMeetingImReply(dataDir: string, origin: VcMeetingImTurnOrigin, canonicalOutput: VcMeetingImReplyCanonicalOutput, now?: number): VcMeetingImReplyPrepareResult;
/**
 * Durable identity for the automatic listener-thread reply of one delivery.
 * The identity is the stable delivery key (not dispatchAttempt), so a crash
 * replay reuses the same provider UUID and first canonical output.
 */
export declare function prepareVcMeetingDeliveryReply(dataDir: string, origin: VcMeetingDeliveryReplyOrigin, canonicalOutput: VcMeetingImReplyCanonicalOutput, now?: number): VcMeetingImReplyPrepareResult;
export declare function finishVcMeetingImReply(dataDir: string, ref: VcMeetingActionRef, messageId: string, now?: number): void;
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