export interface InboxMigrationSummary {
    nodes: number;
    entries: number;
    cursors: number;
    failures: number;
}
/** Scan every node dir under the local canvas and migrate legacy inbox state.
 *  Idempotent; a node that fails migration is reported and skipped so one bad
 *  dir cannot block daemon boot (its broker stays crash-faulted, same as
 *  before the migration existed). */
export declare function migrateLegacyInboxIdentities(): InboxMigrationSummary;