`vp create --package-manager pnpm` is silently ignored (scaffolds and installs with npm)

[FallDownTheSystem]

Describe the bug

vp create --help documents this:

--package-manager NAME  Use specified package manager (pnpm, npm, yarn, bun)

But on the vite:application path the flag doesn't do anything. I run vp create with --package-manager pnpm and get an npm project: the scaffolder is delegated through npx create-vite, deps are installed with npm, and the result has a package-lock.json plus devEngines.packageManager.name: "npm". No warning that the flag was dropped, it just vanishes.

The annoying part is that it sticks. Every later vp command reads devEngines first, so the project stays npm forever unless you convert it by hand.

The pnpm path itself works fine. If workspace-root detection resolves to pnpm (run vp create from a directory whose package.json says "packageManager": "pnpm@..."), you get a fully pnpm-native project: pnpm dlx delegation, pnpm-lock.yaml, pnpm-workspace.yaml with catalog: aliases, pnpm in devEngines. So it looks like the flag just isn't wired into that decision.

Reproduced on v0.1.24 and v0.2.5. Feels related to #1914 (warn instead of silently ignoring pm flags), except this one is vp create's own documented option rather than a pass-through.

Reproduction

https://github.com/FallDownTheSystem/vp-create-package-manager-repro

Steps to reproduce

From an empty directory with no package manager markers in any parent:

vp create vite:application --directory app --no-interactive --no-git --no-hooks --no-editor --no-agent --package-manager pnpm --verbose -- --template vue-ts

Then look at app/: package-lock.json, and devEngines.packageManager.name is "npm".

System Info

vp v0.2.5

Local vite-plus:
  vite-plus  Not found

Tools:
  vite             Not found
  rolldown         Not found
  vitest           Not found
  oxfmt            Not found
  oxlint           Not found
  oxlint-tsgolint  Not found
  tsdown           Not found

Environment:
  Package manager  npm latest
  Node.js          v24.18.0

Environment:
  Version  24.18.0
  Source   lts

Tool Paths:
  node  C:\Users\Juugo\.vite-plus\js_runtime\node\24.18.0\node.exe
  npm   C:\Users\Juugo\.vite-plus\js_runtime\node\24.18.0\npm.cmd
  npx   C:\Users\Juugo\.vite-plus\js_runtime\node\24.18.0\npx.cmd

(run from an empty directory, hence the "Not found" rows)

Used Package Manager

pnpm

Logs

Running: npx create-vite@latest app --template vue-ts --no-interactive --no-immediate --no-rolldown
...
• Node 24.18.0  npm 12.0.1

Full verbose log is in the repro repo's output.txt.

Validations

• Read the Contributing Guidelines.
• Check that there isn't already an issue for the same bug.
• Confirm this is a Vite+ issue and not an upstream issue (Vite, Vitest, tsdown, Rolldown, or Oxc).
• The provided reproduction is a minimal reproducible example.

[jong-kyung]

Thanks for the report. I couldn't reproduce this using the provided steps. Could you provide a bit more information?
In particular, could you check whether another package manager is defined in any parent directory, for example through package.json or a lockfile? Running vp env current from the directory where you ran vp create may also help.