Function prefetch

src/hooks/useAsyncImageCache.ts:306–321

* Prefetch items for a list of images. * Uses bulk mode for faster initial loading with bounded yielding batches. * Uses batched progress updates to avoid excessive re-renders.

(
      images: Array<{ file: File; name: string }>,
      onProgress?: (progress: number) => void
    )

     * Uses batched progress updates to avoid excessive re-renders.
     */
    async prefetch(
      images: Array<{ file: File; name: string }>,
      onProgress?: (progress: number) => void
    ): Promise<void> {
      await prefetchAsyncImages({
        images,
        onProgress,
        cache: state.cache,
        loadingPromises: state.loadingPromises,
        queueLoad,
        setBulkMode: (bulkMode) => {
          state.bulkMode = bulkMode;
        },
        maxConcurrentLoads: MAX_CONCURRENT_LOADS,
      });
    },

    /**
     * Get current cache generation (for tracking cache clears).