fix: use trusted publishing for packages

[duncanleo]

Summary

• Remove NPM_TOKEN and NODE_AUTH_TOKEN from the Changesets publish step.
• Let npm publish use GitHub Actions OIDC/trusted publishing, matching the package publishing approach from the data-overhaul branch.
• Leave the branch without a changeset so changesets/action@v1 takes its no-changesets path and publishes the already-versioned, unpublished @mrtdown/core and @mrtdown/fs packages.

Root Cause

The merged package publish run reached changeset publish, but npm returned E404 Not Found ... or you do not have permission for both @mrtdown/core@2.0.0-alpha.23 and @mrtdown/fs@2.0.0-alpha.23. The workflow was passing secrets.NPM_TOKEN, so npm attempted token-based publish with a token that does not have publish rights for the @mrtdown scope. The repository already has id-token: write, so the workflow should use npm trusted publishing instead.

Validation

• npm run check
• npm run changeset -- status --since origin/main

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: cde068b6-5aa2-424b-8ef4-9ebfd27d87df

📥 Commits

Reviewing files that changed from the base of the PR and between 5938f92 and 67d8ab7.

📒 Files selected for processing (1)

• .github/workflows/package-publish.yml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/fix-package-publish-auth

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[chatgpt-codex-connector]

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