test(install): pin exit-2 fixture temp-parent mode to 0700

[namastex888]

Summary

• The install-exit2-propagation integration suite failed (exit 127 instead of the exit-2 contract) on any host with umask 0002: mkdirSync(work/tmp) inherited the umask and produced a group-writable (775) temp parent, which install.sh's validate_private_temp_root correctly rejects.
• Pin the fixture dir to 0o700 so the test exercises the real exit-2 lifecycle regardless of host umask.

Verification

• Before: both tests in the suite fail with status 127 on a umask-0002 host.
• After: bun test tests/integration/install-exit2-propagation.test.ts → 2 pass / 0 fail on the same host.

Note (not fixed here)

When validate_private_temp_root dies at source time, die calls release_lifecycle_lock before it is defined, so the installer exits 127 instead of the contractual 1. Worth a small follow-up in install.sh.

🤖 Generated with Claude Code

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 89d52872-3453-428a-853d-9caf1cc22d80

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch test/install-exit2-fixture-umask

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}