mlx-bun library API
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    interface RouteChunkOpts {
        leads?: Map<string, string>;
        noModel?: boolean;
        shortlistK?: number;
    }
    Index
    leads?: Map<string, string>

    One-line lead per canonical, for the disambiguation prompt.

    noModel?: boolean

    Disable the model fallback (deterministic-only routing) — misses become none. Used by the pure tests + dry runs.

    shortlistK?: number

    Shortlist width for the model disambiguation fallback.