Variable COMPOSITION_DEFAULTS`Const`

COMPOSITION_DEFAULTS: Readonly<
    {
        grammarJump: false;
        greedyDraft: false;
        mixedPrefill: false;
        mixedTokenBudget: number;
        pagedKv: null;
        prefillTailSplit: true;
        vectorGreedySampling: true;
    },
> = ...

The value of each composition fact a caller leaves unstated: what resolveComposition resolves, and what a graph built without a record runs.