Release v1.0.21

fix: restore publish inputs that were nuked by upstream setup.sh

The dmzoneill/dmzoneill setup.sh script was blindly overwriting repo-specific
workflow configs with a generic template (basic: "true"), stripping all
publish inputs. This restores pypi, deb, rpm, snap, and docker publishing.

The upstream setup.sh has been fixed to only copy workflow files when they
are missing, not when they differ from the template.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>