fix: narrow REAPED_STATUSES cfg to non-Linux unix only

[jdx]

Summary

• REAPED_STATUSES was declared with #[cfg(unix)] but only written/read behind #[cfg(all(unix, not(target_os = "linux")))]
• On Linux CI, this caused a dead_code warning that fails clippy -D warnings
• Narrowed the declaration's cfg gate to match its actual usage

Test plan

• cargo clippy --all-targets --all-features -- -D warnings passes on Linux without warnings

🤖 Generated with Claude Code

---

Note

Low Risk
Low risk: this only tightens a cfg gate for a static used exclusively on non-Linux Unix, reducing Linux-only dead_code/clippy warnings without changing runtime behavior on supported paths.

Overview
Narrowed the REAPED_STATUSES static’s compile-time cfg from #[cfg(unix)] to #[cfg(all(unix, not(target_os = "linux")))] so it is only compiled on platforms where it’s actually used.

This avoids Linux dead_code warnings (and resulting clippy -D warnings failures) while leaving Linux zombie-reaping behavior unchanged.

^{Reviewed by Cursor Bugbot for commit 7d53370. Bugbot is set up for automated code reviews on this repo. Configure here.}

[greptile-apps]

Greptile Summary

This PR fixes a dead-code warning on Linux CI by narrowing the #[cfg] gate on REAPED_STATUSES from #[cfg(unix)] to #[cfg(all(unix, not(target_os = "linux")))], matching the gates already present on every write and read site. The fix is minimal and surgical with no behavioral change.

Confidence Score: 5/5

Safe to merge — one-line cfg gate correction with no behavioral change.

The change is a targeted, correct fix that aligns the declaration's cfg gate with every existing usage site. No logic is altered, and the fix resolves a real clippy -D warnings failure on Linux CI.

No files require special attention.

Important Files Changed

Filename	Overview
src/supervisor/mod.rs	Narrows REAPED_STATUSES declaration cfg gate to #[cfg(all(unix, not(target_os = "linux")))], exactly matching all read/write sites — eliminates Linux dead_code warning with no logic change.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[SIGCHLD received] --> B{Platform?}
    B -->|Linux| C["waitid(Id::All, WNOWAIT|WNOHANG|WEXITED)\nPeek at next zombie"]
    B -->|non-Linux Unix| D["waitpid(None, WNOHANG)\nBlind reap — may race"]

    C --> E{PID managed?}
    E -->|Yes| F[Skip — leave for Tokio child.wait]
    E -->|No| G["waitpid(Pid, WNOHANG)\nActually reap it"]

    D --> H{PID managed?}
    H -->|No| I[Reap as orphan]
    H -->|Yes – race lost| J["REAPED_STATUSES.insert(pid, code)\n#[cfg(all(unix, not(target_os = 'linux')))]"]

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[gemini-code-assist]

Code Review

This pull request updates the conditional compilation for the REAPED_STATUSES static variable in src/supervisor/mod.rs. The variable is now restricted to non-Linux Unix platforms, as Linux utilizes waitid with WNOWAIT to handle process reaping without needing this map. I have no feedback to provide.