Do not update package.json when running vpr #2374

Description

Running a script with vpr can add package manager metadata to package.json.

This is unexpected when I only want to run a script, especially in someone else’s repository. Coding agents also freak out with this behaviour, Vite+ edits package.json, the agent reverts the unexpected change, and Vite+ adds it again on the next vpr command.

Vite+ should not automatically edit files as side effects.

Suggested solution

Do not add packageManager or devEngines.packageManager metadata as a side effect of running vpr/vp run.

Pinning a package manager should require an explicit user action, such as a dedicated vp pm pin command.

Alternative

No response

Additional context

I want to fix this if we go with this proposal 🫡

Validations

• Read the Contributing Guidelines.
• Confirm this request is for Vite+ itself and not for Vite, Vitest, tsdown, Rolldown, or Oxc.
• Check that there isn't already an issue requesting the same feature.