import { type MutationHint } from "../chat/types.js";
import { type DrizzleExecutor } from "../drizzle.js";
import { type DocumentChannelAttachment, type DocumentSummary } from "./types.js";
/**
 * Attaches an existing owner- or channel-accessible document to a channel the actor may
 * post to by inserting one `documentChannelAttachments` row and advancing `documents.updatedAt`.
 * The owner always has document access; members inherit access through any attachment,
 * while inaccessible document or channel checks both return `not_found`. The transaction
 * records `document.attached` so global and channel lists reconcile atomically.
 */
export declare function documentAttach(executor: DrizzleExecutor, input: {
    actorUserId: string;
    documentId: string;
    chatId: string;
}): Promise<{
    attachment: DocumentChannelAttachment;
    document: DocumentSummary;
    hint: MutationHint;
}>;
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