- PeerDependencies now accept registry, npm alias, and file/git specs, with proper semver matching; bare name@version still rejected.
- Added `pnpm doctor` for installation/environment diagnostics and enhanced `pnpm run` to execute multiple scripts via RegExp, restoring the sequential `-s` option.
- Fixed multiple bugs: lockfile symlink handling, frozen install lockfile issues, owner CLI error reporting, metadata cache recovery, OOM regression, exact version pin preservation, and self‑update safety checks.