Keep dependency execution in read-only release jobs and validate the original qualified archive with Node built-ins before publication. Refresh registry state on every publisher attempt; retain exact bytes/channel verification, v1 read-only recovery, and installed CLI/MCP checks before MCP publication.
Static/docs checks, artifact/registry/recovery tests and real package/rehearsal verification pass. All four hosted package platforms pass. Portable CI retains the independently reproduced main PTX failure in #6675 and fail-fast missing coverage; use the owner-authorized existing PR-only exception, with limitations documented in the PR. Refs #6480.