pnpm frozen lockfile errors should point to tool version and lockfile owner

A pnpm frozen lockfile error should point the team to two questions: which tool version wrote the lockfile, and who owns the lockfile change? pnpm documentation says installs in CI use frozen-lockfile behavior when a lockfile is present, and installation can fail if the lockfile needs an update. That is a useful guard because it stops CI from silently rewriting dependency resolution.

The confusing case is when a developer did not knowingly edit dependencies. The mismatch can still come from a workspace package change, a package manager upgrade, a lockfile generated by a newer pnpm major version, or a branch merge that moved package.json without the matching lockfile section. Treat it as a provenance problem before treating it as a package problem.

A compact investigation order works well: record CI pnpm version, local pnpm version, packageManager field, lockfileVersion, changed workspace package, install command, and whether the branch contains only lockfile movement or also dependency intent. Then decide whether to update the lockfile, pin the tool version, or split dependency changes into their own review.

Do not hide the issue by disabling frozen behavior unless the team is intentionally trading reproducibility for speed. Most teams want the error to be loud because a quiet dependency rewrite is harder to audit than a failing install.

pnpm frozen lockfile errors should point to tool version and lockfile owner

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