/**
 * Journal mutations: append-only timestamped transcript at
 * `.harnery/journal/<instance_id>.md`.
 *
 * Used by the agents-coord web UI route handlers for both operator-nudge
 * appends and inline edits.
 */
/**
 * Append a timestamped entry to the owner's journal.
 * Returns true on success, false if validation failed.
 */
export declare function appendJournal(coordRoot: string, instanceId: string, category: string, body: string): {
    ok: boolean;
    reason?: string;
    path?: string;
};
/**
 * Replace the journal with new body, archiving prior contents and
 * appending an "(edited via UI by the operator)" audit-marker note.
 */
export declare function editJournal(coordRoot: string, instanceId: string, newBody: string, summary: string): {
    ok: boolean;
    reason?: string;
    archivePath?: string;
    path?: string;
};
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