This PR simplifies how we build and publish docs:
- **Publish from `master` branch, retire `stable` branch.** The `stable`
branch was a manual step in the release process and often out of date.
Docs are now built and published directly from `master`.
Release-specific docs are available in the `zrepl-noarch.tar` asset on
each GitHub release.
- **build dependencies**: use `uv` for dependency management
- **zrepl.github.io: retire multi-version docs**: before this PR we used
`sphinx-multiversion` to publish multiple docs versions to
`zrepl.github.io`. This was never worth the pain, so, this PR removes it
in order to simplify stuff. Old docs are available in the GitHub
releases, and the docs now have a version dropdown that links there for
a hand-curated set of versions.
- **GitHub pages repo checkout**: use HTTPS because that's what I use
these days for all things GitHub. Switch CircleCI to a fine-grained PAT.
Refs
- docs bug https://github.com/zrepl/zrepl/issues/895
- links to config examples should work again after this PR
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Christian Schwarz