Keep desktop rollback in staged publication instead of restoring backups
inside a candidate directory that will be discarded.
Use the npm tag endpoint, let the downloader own archive verification,
and ensure CI toolchain roots without repeating dependency verification.
Remove an unused resolver input and replace overlapping tests with
fault-proven lifecycle coverage.
Verified with the scoped Python gate and before-pack tests. Native
Windows/macOS update execution and the full suite were not run.
3d0b6f9a0c