Removed

• The old spellings of the input and output flags - --file (on asset create and config import), --files, --csv-file, --local-path, --file on asset thumbnail, and the bare positional output path on asset download were kept as hidden aliases by 1.27. They are gone. Each is still recognised so a script that uses one stops with exit 64 and a message naming the replacement (--input, or -o/--output), rather than clap's "unexpected argument". The README has the full mapping under "Upgrading to 2.0". This is the only change since 1.29.0, and the reason for the major version.