verify_file returns FileVerifyError (no Release file, unlisted path,
checksum mismatch, size mismatch — the structured pieces carried, so
the by-hash retry in package_info can match on the failure instead of
parsing text) and the in-process armor/base64 decoders return
ArmorError; the gpgv staging and keyring-download paths keep their
diagnostic strings, rendered at the boundary. The existing
VerifyError(String) keeps its name and downcast role for suite
signature verification. Display texts are byte-identical to the old
format! strings.
vhaudiquet
82600b1d22