[Bug]: updater fails to locate npm-cli.js when npm is managed by pnpm

Product or interface

CLI - interactive TUI

Version

0.4.12

Platform

macOS

OS version and architecture

macOS 27 arm64

Issue area

Startup / install / update

Desktop log upload ID (optional)

No response

Steps to reproduce

MiniMax Code is installed successfully and runs normally:
curl -fsSL https://filecdn.minimax.chat/public/install.sh | bash

mcode --version
0.4.12

However, when the updater tries to update MiniMax Code, it fails with:

mcode update

Cannot locate npm-cli.js for the owned npm executable: /Volumes/KIOXIA/Applications/tools/.pnpm-home/npm
npm/pnpm layout

My npm executable is managed by pnpm and is located at:

/Volumes/KIOXIA/Applications/tools/.pnpm-home/npm

The npm executable is a shell shim generated by pnpm:

#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")

if [ -x "$basedir/node" ]; then
  exec "$basedir/node" "$basedir/nodejs/26.3.1/lib/node_modules/npm/bin/npm-cli.js" "$@"
else
  exec node "$basedir/nodejs/26.3.1/lib/node_modules/npm/bin/npm-cli.js" "$@"
fi

The real npm CLI exists at:

/Volumes/KIOXIA/Applications/tools/.pnpm-home/nodejs/26.3.1/lib/node_modules/npm/bin/npm-cli.js

node -v
v26.3.1

npm -v
11.16.0

pnpm -v
10.32.1

Expected and actual behavior

The updater should either:

correctly resolve pnpm's npm shim to the real npm-cli.js, or
invoke the existing npm executable directly instead of assuming a particular npm filesystem layout.

Redacted error summary

Screenshots

No response

Before submitting

• I have searched existing issues.
• I have included my version and removed sensitive information.

No source files or tests are named. Start with the updater path invoked by mcode update, reproduce the failure using the pnpm-generated npm shim, and trace how it locates npm-cli.js. Done means the updater can complete with this npm layout, with coverage for the reported macOS setup.