E2E: replace npm with pnpm

[phyllis-sy-wu]

WHY are these changes introduced?

E2E tests hardcoded packageManager: 'npm' in all createApp calls. npm is no longer supported in Shopify's internal dev environment (npm install fails with "npm is no longer supported in a global context. Please migrate to pnpm"). This blocks local test runs.

WHAT is this pull request doing?

• Switches all E2E test packageManager from 'npm' to 'pnpm' across app-scaffold, app-deploy, and app-dev-server specs
• Updates a comment in constants.ts to remove the npm reference

No test behavior changes — the tests exercise the same CLI commands (app init, app build, app dev, app deploy), just with pnpm handling dependency installation instead of npm.

How to test your changes?

DEBUG=1 pnpm --filter e2e exec playwright test

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've considered analytics changes to measure impact
• The change is user-facing, so I've added a changelog entry with pnpm changeset add

[phyllis-sy-wu]

• E2E: replace npm with pnpm #7333 👈 (View in Graphite)
• main

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[Copilot]

Pull request overview

Updates the E2E test suite to use pnpm instead of npm when scaffolding apps, aligning local E2E runs with Shopify’s internal dev environment where npm install is unsupported.

Changes:

• Switched createApp({ packageManager: 'npm' }) to createApp({ packageManager: 'pnpm' }) in key E2E specs.
• Updated the E2E CLI timeout comment to remove the specific npm install reference.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/e2e/tests/app-scaffold.spec.ts	Uses pnpm for app creation across scaffold scenarios.
packages/e2e/tests/app-dev-server.spec.ts	Uses pnpm for app creation before running app dev.
packages/e2e/tests/app-deploy.spec.ts	Uses pnpm for app creation before app deploy verification.
packages/e2e/setup/constants.ts	Updates timeout documentation to be package-manager agnostic.

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