The publish step passed labels but not annotations, so
org.opencontainers.image.source landed only on per-platform configs, not
the multi-arch index. GHCR reads the source from the index annotation to
auto-link a package to its repo, so the package stayed orphaned.
- Set DOCKER_METADATA_ANNOTATIONS_LEVELS=index + pass annotations to the
build, putting source/url/revision on the index.
- provenance: false keeps the pushed artifact a clean multi-arch index.
- workflow_dispatch now takes a 'tag' input to (re)publish a specific
version; tags derived from the ref so dispatch and release both work.
Type ci → no version bump; republish v0.13.0 via dispatch.
526c45d9ce