Verifier output:
object: backups/db-2026-06-02.tar
local_md5: 9f2a1d4e6a7b8c901122334455667788
remote_etag: "9f2a1d4e6a7b8c901122334455667788-17"
size: 9134 MiB
upload tool: aws s3 cp, multipart threshold default

The script marks the object as corrupted because remote_etag != local_md5.
