CI: Windows test jobs intermittently hang for 7+ minutes

[dorlugasigal]

Windows CI jobs (Node 22 and Node 24 on windows-latest) intermittently hang for 7+ minutes during test runs that should complete in under a minute. This has been observed in multiple CI runs and requires manual cancellation and re-run to proceed.

Observed behavior:

• Test (windows-latest, Node 20) completes in ~80s
• Test (windows-latest, Node 22) and Test (windows-latest, Node 24) sometimes hang indefinitely
• Cancelling and re-running the failed jobs usually resolves the issue

Possible causes to investigate:

• PTY/node-pty process cleanup issues on Windows
• Test isolation problems specific to newer Node versions on Windows
• Potential deadlock in integration tests or WebSocket cleanup
• Windows-specific CI runner resource contention

Relevant files:

• test/integration.test.js — uses real PTY servers, longest-running test
• test/cli/service.test.js — heavy require.cache manipulation
• .github/workflows/ci.yml — CI matrix configuration