pnpm@11 for Mac

pnpm is a command-line package manager for JavaScript developers, built around a smarter way to manage project dependencies. It stores downloaded packages in a central local repository, and different projects share the same files instead of each project keeping its own copy, which significantly saves disk space and makes installation faster. For developers maintaining multiple frontend or Node.js projects at the same time, this sharing mechanism is especially convenient. Its commands are similar to those of common package managers, so migration costs are low, making it suitable for individual developers and teams who want to reduce repeated downloads and keep dependency management cleaner and more streamlined.