fix: run snapshot publish outside pnpm exec

[brendanjryan]

Motivation

Snapshot publishing rewrote the manifest through Zile, then pnpm revalidated the rewritten workspace manifest and rejected its intentionally stale lockfile.

Summary

• Added a dedicated main-snapshot publish script that runs Zile and Changesets directly after setup.
• Removed the unsupported Changesets publish snapshot flag.

Key design considerations

• Preserved frozen-lockfile enforcement for all normal pnpm operations.
• Kept Zile's manifest restoration in the publish sequence.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/mppx@656

commit: 587e910

[cursor]

Bugbot is not enabled for your account, so this pull request was not reviewed.

Enable Bugbot in the Cursor dashboard to get automatic reviews on future PRs.