In CRAN or offline builds, network-dependent chunks are not evaluated.
This example uses BlueTopo tiles covering New York Harbor. The
workflow demonstrates tile discovery, checksum-verified asset retrieval,
and file-backed raster access with terra. Raster Attribute
Table (RAT) sidecars are retained with the source GeoTIFF assets.
The second call reports reused_verified for files that
already exist and still match NOAA SHA-256 checksums. RAT sidecars are
downloaded and verified with the GeoTIFF assets.
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