fix(install): make psutil a hard win32 dependency

[dracic]

What

Make psutil a platform-scoped core dependency (psutil>=7.2.2; sys_platform == 'win32') instead of an opt-in non-linux extra.

Why

On win32 psutil is load-bearing: WindowsProcessHost probes engine liveness/identity through it (no /proc, and os.kill(pid, 0) there is a destructive CTRL_C_EVENT). When it's absent probe_liveness() degrades to "unknown", so bmad-loop tui paints every run as ? regardless of actual state.

The default install path never pulled it — the bmad-loop-setup skill installs bmad-loop[tui], not [non-linux]. This marker makes pip, uv tool, and the setup skill all get psutil automatically on Windows. Linux stays dep-free; the non-linux extra remains the macOS opt-in.

Closes #71

Summary by CodeRabbit

• Bug Fixes
  • Improved Windows setup by including an additional required dependency automatically on that platform.
  • Updated optional package notes to reflect platform-specific installation behavior more clearly.

[coderabbitai]

Warning

Review limit reached

@dracic, you've reached your PR review limit, so we couldn't start this review.

Next review available in: 54 minutes

Enable usage-based reviews in Billing to review now. Otherwise, wait until the next included review is available.
You're only billed for reviews past your plan's rate limits ($0.25/file).

How can I continue?

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 reviews.

How do review limits work?

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

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, additional reviews become available more gradually as earlier reviews age out of the rolling window.

Please refer docs for additional details.

Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b480bb47-d1ef-4d66-9179-6372293635ca

📥 Commits

Reviewing files that changed from the base of the PR and between 7ddd4f4 and 0dbd6a7.

⛔ Files ignored due to path filters (1)

• uv.lock is excluded by !**/*.lock

📒 Files selected for processing (3)

• pyproject.toml
• src/bmad_loop/data/plugins/unity/unity_teardown.py
• src/bmad_loop/process_host.py

Walkthrough

The psutil package is added as a Windows-conditional core dependency in pyproject.toml (sys_platform == 'win32'), alongside the existing pyyaml dependency. Comments in the tui optional-dependencies section are updated to reflect that Windows now gets psutil as a core dependency, while macOS remains an opt-in.

Changes

Dependency configuration update

Layer / File(s)	Summary
Core and optional dependency updates pyproject.toml	psutil is added to core dependencies conditionally for Windows (sys_platform == 'win32'), and the tui extra's comments are updated to describe the new dependency strategy, removing the older non-Linux/process-discovery comment.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Estimated code review effort: 1 (Trivial) | ~3 minutes

Poem

A rabbit hopped on Windows snow,
Found psutil finally ready to go,
No more ? marks in the TUI's face,
Just alive or dead, each run in place.
Hop, hop, hooray — dependencies flow! 🐇✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: making psutil a Windows hard dependency.
Linked Issues check	✅ Passed	The change matches #71 by moving psutil into a Windows-only core dependency while leaving Linux unchanged.
Out of Scope Changes check	✅ Passed	The PR only updates dependency metadata and related comments, with no obvious unrelated code changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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.}

[augmentcode]

🤖 Augment PR Summary

Summary: Makes psutil a Windows-only core dependency so win32 liveness/identity probing works reliably.
Changes: Adds a sys_platform == 'win32' dependency marker in pyproject.toml and clarifies the non-linux extra as macOS opt-in.

_{🤖 Was this summary useful? React with 👍 or 👎}

[augmentcode]

Review completed. 1 suggestion posted.

Comment augment review to trigger a new review at any time.