Add a detailed comment to the `confirmModulesPurge: false` setting in
`pnpm-workspace.yaml`. This comment explains that this setting avoids
interactive prompts when `node_modules` needs to be purged and
recreated. This prevents package installation commands from hanging or
failing in non-interactive contexts (such as CI/CD pipelines, container
builds, or automated editor/agent environments) where stdin is
not a TTY.