test(proxy): skip case-distinct bypass cases on Windows

[lidge-jun]

Summary

The final Cross-platform CI run for release train 4 on dev (run 36346985953, head b383def) failed on windows 6/9. Five cases in tests/server/proxy-env-macos.test.ts, added with the macOS proxy: "auto" discovery work, assume NO_PROXY and no_proxy can hold different values. On Windows, environment variable names are case-insensitive, so writing no_proxy overwrites NO_PROXY and the assertions cannot hold.

This change skips those cases on win32, the same way the neighbouring WebSocket bypass case in the file already does. In the parameterized "inherited %s wins" test, only the upper/lower route assertion is guarded. The discovery path under test only runs on darwin, so no production behavior changes.

Verification

• bun test tests/server/proxy-env-macos.test.ts on macOS: 43 pass, 0 fail.
• bun run typecheck: passed.
• Windows coverage comes from the Cross-platform CI run that will be dispatched on dev after this merges. Per-PR CI was intentionally not run for release train 4 because of runner congestion.

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed. (none needed, test-only)
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults. (none, test-only)

Summary by CodeRabbit

• Tests
  • Adjusted macOS proxy test coverage to account for case-insensitive environment-variable names on Windows.

[github-actions]

✅ Deterministic PR hygiene checks passed.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-27T20:27:52.497442Z	c130aa0	PR opened

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ℹ️ Recent review info

⚙️ Run configuration

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Review profile: ASSERTIVE

Plan: Advanced

Run ID: 33c16b30-06c3-465a-8dae-2750b5d8095e

📥 Commits

Reviewing files that changed from the base of the PR and between b383def and c130aa0.

📒 Files selected for processing (1)

• tests/server/proxy-env-macos.test.ts

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📝 Walkthrough

Walkthrough

Proxy environment tests that rely on distinct uppercase and lowercase variable names now skip on Windows. The change covers separate bypass lists, an uppercase-only localhost route, and inherited SOCKS/HTTP bypass assertions.

Changes

Proxy environment test compatibility

Layer / File(s)	Summary
Gate case-sensitive proxy tests tests/server/proxy-env-macos.test.ts:27-30, tests/server/proxy-env-macos.test.ts:74, tests/server/proxy-env-macos.test.ts:221-228	Tests that require distinct NO_PROXY and no_proxy values, including inherited SOCKS/HTTP bypass cases, now skip on Windows. Windows treats environment variable names as case-insensitive.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~4 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to c130a

The Windows skips are limited to assertions that cannot apply when environment names are case-insensitive; no merge-blocking issue was identified.

Architecture Summary

Architecture risk: 🔵 Low · up to c130a

The change affects 1 system.

Changed systems: tests

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — tests (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in tests/server/proxy-env-macos.test.ts: The test for separate uppercase and lowercase bypass lists now runs only when environment names are case-sensitive; it is skipped on Windows.
• observed — Modified behavior in tests/server/proxy-env-macos.test.ts: The configured-localhost test that checks an uppercase-only bypass route is now skipped on Windows.
• observed — Modified behavior in tests/server/proxy-env-macos.test.ts: The inherited-SOCKS bypass assertions now run only on case-sensitive environments, and the mixed inherited SOCKS/HTTP bypass test is skipped on Windows.

🚥 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 and concisely describes the main change: proxy tests skip case-distinct bypass cases on Windows.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
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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[lidge-jun]

Maintainer dev integration (MAINTAINERS.md, dev-only, no second approval): release train 4 coordinator fix for the final dev CI run 36346985953 (head b383def), where windows 6/9 failed on five case-distinct NO_PROXY/no_proxy assertions. Exact head c130aa0. Test-only; macOS focused file 43/0 and typecheck pass locally. Windows proof comes from the post-merge Cross-platform CI run on dev.