* fix(release): isolate extended-stable Docker aliases * fix(release): harden Docker channel promotion * docs(release): pin Docker policy into tagged tree * refactor(release): isolate Docker channel promotion * fix(release): queue Docker publications * fix(release): harden docker channel promotion * docs(release): tighten extended-stable guidance * fix(release): promote Docker aliases after verification * chore(release): format maintainer instructions * refactor(release): separate release version policy * docs(release): clarify extended-stable gateway scope * fix(release): harden Docker channel promotion