import type { WorkItemAttachment } from './attachments.js';
/**
 * What a comment carries. Its own module because it exists for one reason a
 * plain attachment listing does not: a parked workflow Wait resumes on an
 * operator's reply, and the files attached to that reply are half the answer.
 */
/** Just enough of an attachment row to reference it: no filename, no on-disk
 *  path. What a surface outside the store is given to point at the bytes. */
export type WorkItemAttachmentHandle = Pick<WorkItemAttachment, 'id' | 'mime'>;
/** The handles for one comment's own attachments, oldest first. Tombstoning a
 *  comment leaves its rows in place, so a run resumed by a reply still sees
 *  what was attached to it. */
export declare function listCommentAttachments(commentId: string): WorkItemAttachmentHandle[];
export type TodoAttachmentListener = (attachment: WorkItemAttachment) => void;
export declare function setTodoAttachmentListener(listener: TodoAttachmentListener | null): void;
/** Announce a committed attachment and hand it straight back, so the store can
 *  announce on its way out. A reply arrives as a comment and THEN its uploads,
 *  one request each, so this is the only signal that says more of it landed.
 *  Best-effort like the comment listener: a subscriber that throws must never
 *  break the write it observed. */
export declare function announceAttachment(attachment: WorkItemAttachment): WorkItemAttachment;
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