mlx-bun library API
    Preparing search index...
    interface SplitResult {
        child: string;
        childStem: string;
        childTitle: string;
        movedMarkers: number[];
        parent: string;
        summary: string;
    }
    Index
    child: string

    The new child article (post-NORMALIZE).

    childStem: string
    childTitle: string
    movedMarkers: number[]

    The [^N] numbers carried to the child (parent-side renumber may differ).

    parent: string

    The parent with the section replaced by a summary + Main pointer (post-NORMALIZE).

    summary: string

    The 2–3 sentence summary left in the parent.