/**
 * Delivery record for agent replies mirrored to Slack.
 *
 * The mirrors (team channel, agent DM) run off the chat-v2 `chat_message`
 * event, so the reply call that created the message used to return before
 * Slack had answered: a failed post was logged and the agent was told
 * "delivered". Each mirror registers its attempt here under the message id;
 * the reply endpoint awaits it and answers the agent honestly, and the Slack
 * channel + ts are stored on the message so what reached Slack can be
 * proven from our own records (CREW-89).
 */
/** What became of one mirrored message. */
export interface SlackOutboundDelivery {
    /** True once the Slack post (or edit of the placeholder) succeeded. */
    delivered: boolean;
    /** Slack channel posted to. */
    slackChannelId?: string;
    /** Slack ts of the message that carries the reply. */
    ts?: string;
    /** Thread the reply was posted in. */
    threadTs?: string;
    /** Slack's error when the post failed. */
    error?: string;
}
/** Metadata key under which the delivery is stored on the chat message. */
export declare const SLACK_DELIVERY_METADATA_KEY = "slackDelivery";
/** How long a reply call waits for the mirror before answering without it. */
export declare const SLACK_DELIVERY_WAIT_MS = 15000;
/**
 * Register a mirror attempt for a message; several mirrors may register under
 * one id and are combined by {@link awaitSlackDelivery}. `null` from the promise means the
 * message was not meant for Slack (not mapped, skipped) — nothing to report.
 *
 * @param messageId - chat-v2 message id
 * @param attempt - The mirror's outcome
 */
export declare function trackSlackDelivery(messageId: string, attempt: Promise<SlackOutboundDelivery | null>): void;
/**
 * Wait for a message's Slack mirror.
 *
 * @param messageId - chat-v2 message id
 * @param timeoutMs - Longest wait; on timeout the result is null (unknown, not failed)
 * @returns The delivery, or null when the message has no Slack mirror (or it is still running)
 */
export declare function awaitSlackDelivery(messageId: string, timeoutMs?: number): Promise<SlackOutboundDelivery | null>;
/** Test helper: forget every tracked attempt. */
export declare function resetSlackDeliveryTracker(): void;
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