I think npm install and similar commands would already throw on unsupported Node versions when the package manager tries to install vite? If so, we don't need to add this to the template explicitly. It doesn't add any new information to the project, yet it may become a maintenance burden in the future.

I now use Node 18 to run pnpm create vue to create a project and execute pnpm i, and no errors or prompts appear. It is not until pnpm dev is executed that the error appears.

Therefore, if the required node version information is added to package.json, the user can be informed more clearly of the reason.

In fact, after Vite released 7, many people encountered this problem and raised issues.

Thanks. I took some further tests. It seems that pnpm create doesn't check the engines field of create-vue, and pnpm install ignores those in the dependencies, while npm warns in both cases.
Including an explicit engines field in the created project's package.json is indeed beneficial for users of pnpm.