fix(update): Do not hang if package manager is not present

[dmoerner]

I don't have yarn installed, and this produced a hang on clerk update. The cause of the hang was that it was sitting waiting for user confirmation to download yarn, but never surfaced this to the user. Instead, ignore stdin, explicitly do not use corepack download prompts, and add a timeout.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8ce4615

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
clerk	Patch

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[dmoerner]

!snapshot

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 39c71e9a-71c0-46c8-ba50-680ce8f6bd27

📥 Commits

Reviewing files that changed from the base of the PR and between 30d9724 and 8ce4615.

📒 Files selected for processing (2)

• .changeset/clerk-update-yarn-hang.md
• packages/cli-core/src/lib/installer.ts

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📝 Walkthrough

Walkthrough

A new Changesets metadata file documents a clerk patch update addressing package manager probe hangs. The installer.ts file is refactored to consolidate npm/pnpm/yarn global directory discovery into a shared probePmDir routine that detaches stdin, disables corepack download prompts via environment variable, enforces a 1500ms timeout, and provides unified error handling that returns null on spawn errors, nonzero exits, timeouts, or empty output. This replaces the prior implementation using Bun's $(...).quiet().nothrow() with individual exitCode checks per package manager.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 40.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: fixing an issue where clerk update would hang if a package manager is not present, which is directly addressed by the implementation.
Description check	✅ Passed	The description clearly explains the problem (hang when yarn not installed due to hidden corepack prompt) and the solution (ignore stdin, disable corepack prompts, add timeout), which aligns with the changeset and implementation.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[github-actions]

Snapshot published

npm install -g clerk@1.1.1-snapshot.8ce4615

Package	Version
clerk	1.1.1-snapshot.8ce4615

Published from 8ce4615