Replace the self-referential <repo-url-from-release-notes> placeholder
in the root README, the release-notes template, and the Void packaging
README with the concrete per-tag download prefix the build-xbps job
attaches the signed repo to. Static docs default TAG to the current
version; release.yml renders github.ref_name at publish time.
Fixes#29
Add build-xbps tag job to release.yml: verifies the tag against
src/vocalinux/version.py, fails closed when XBPS_SIGNING_KEY is unset,
builds and signs via podman-only repo.sh, and attaches packages,
signatures, repodata, and client key files to the release. Fold the
xbps-repo artifact into publish-checksums (manifest + SHA256SUMS).
Document the Void install in the root README (glibc x86_64 scope,
fingerprint check, third-party repo caveat) and the post-tag template
version/checksum bump as a pull request in docs/RELEASE_PROCESS.md.
Proof: local podman run with a throwaway RSA4096 key built all four
templates, signed packages + repodata, and verified voculinux installs
from the signed repo in a clean rootdir (fingerprint
eb:29:5d:9e:5c:94:c1:63:ae:35:cd:35:db:7a:28:da).
Build every template in smoke-gate order, index the full repository and
sign packages plus metadata with the RSA4096 key, in the pinned Void
container via podman. Fail-closed without a key: no key file, no repo.
Ticket #29 (needs #27, #28).
soubarnak