Tag pushes ignore paths: filters, so a release tag spuriously rebuilt
the unchanged CI image and re-ran the gate on a commit the branch push
already gated. Add branches: ['**'] to both push triggers — tag pushes
no longer fire them (release.yaml owns tags). Pushing commits + a tag
together still gates the commits via the branch push.
On a v* tag, builds the x86_64-unknown-linux-musl binary in the CI image
and publishes it (+ .sha256) to a Gitea release via the API and the
auto GITEA_TOKEN. x86_64 Linux only for now; rest of the D1 matrix and
D3 packaging layer on later. Correctness comes from the branch gate.
Diagnostic to determine how the ci-public runner executes jobs and
where the nix toolchain is reachable (host vs default container vs a
custom container:), so the real gate is built on facts. Delete once
the gate lands.
claude@clouddev1