[codex] Fix Codex setup script for Windows PowerShell

[big-mon]

Summary

• Replaced the Codex environment setup command chain with a multi-line PowerShell-compatible script.
• Removed the stale autogenerated warning because the environment file is now intentionally maintained.

Root cause

The setup runner executes the configured script as a .ps1 file. The previous script used &&, which older Windows PowerShell versions do not parse, causing setup to fail before pnpm install could run.

Validation

• Parsed .codex/environments/environment.toml successfully with Python tomllib.
• Ran the setup sequence successfully: pnpm install --frozen-lockfile, pnpm run build:packages, and pnpm validate:workspace.

Note: validation used the existing mise-managed toolchain under the user profile; no global installs or machine-wide mise settings were changed.

[coderabbitai]

Warning

Review limit reached

@big-mon, we couldn't start this review because you've reached your PR review rate limit.

More reviews will be available in 13 minutes and 6 seconds. Learn how PR review limits work.

Your organization has used up its prepaid credits, and credit purchases are no longer available. Enable the review add-on in the billing tab to keep reviews running — you're only billed for reviews past your plan's rate limits ($0.25/file).

⌛ How to resolve this issue?

After more reviews become available, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

To avoid repeated limits, reduce automatic review volume by pausing incremental auto-reviews earlier, using label-based review opt-in, excluding WIP or generated PR titles, or requesting reviews manually when the PR is ready. If your team needs uninterrupted high-volume reviews, an organization admin can enable usage-based credits.

🚦 How do rate limits work?

CodeRabbit enforces per-developer PR review limits for each organization. Most developers receive the normal plan refill rate.

For paid Pro and Pro+ PR reviews, CodeRabbit uses adaptive limits for sustained high-volume activity. When a developer's recent PR review activity reaches the 95th percentile or higher among CodeRabbit users, the refill rate gradually slows as usage increases. The highest same-day bursts are limited more strictly.

Please see our Fair Usage Limits Policy for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 4893a19f-1a49-47c2-88a6-c619b9819085

📥 Commits

Reviewing files that changed from the base of the PR and between 06c93ee and 1199078.

📒 Files selected for processing (1)

• .codex/environments/environment.toml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/fix-windows-setup-script

---

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 and usage tips.}