Stable releases previously required a byte-identical tree with the
promoted beta (only CHANGELOG.md could differ) and local releases had
to run exactly at the origin/main tip with an atomic main+tag push.
Together these froze main for the whole beta-to-stable window.
Relax both gates while keeping the beta soak mandatory:
- stable still requires an explicit delivered, non-withdrawn beta whose
commit is an ancestor of the sealed release commit; the tree-identity
drift check is removed
- local releases accept any clean sealed commit contained in
origin/main history (any branch or detached HEAD) and push only the
release tag; command-compatibility checks compare the sealed HEAD,
matching CI
chichuan