fix: skip ps.exe on Windows to prevent console window popups

[bighamx]

Problem

On Windows with Git installed, gateway/status.py's _read_process_cmdline() calls subprocess.run(["ps", "-p", ...]) which finds Git's C:\Program Files\Git\usr\bin\ps.exe in PATH. Each call spawns a visible console window that flashes on screen.

The gateway checks process status periodically, so users see intermittent ps.exe console window popups as long as the gateway is running.

Root Cause

The function tries /proc/<pid>/cmdline first (fails on Windows), then falls through to the ps command — which resolves to Git's ps.exe on Windows. The psutil fallback sits after the ps call and is never reached.

Fix

On win32, skip the ps subprocess call entirely and use psutil directly (already a dependency). Non-Windows platforms are unchanged.

if sys.platform == "win32":
    # use psutil directly
else:
    # existing ps command path

Testing

• Verified fix on Windows 11 with Git installed — no more ps.exe popup windows
• Gateway restarts cleanly and process status checks work via psutil
• No behavior change on Linux/macOS

[tonydwb]

Code Review Summary

Verdict: Approved

Fix: Skip ps.exe on Windows to prevent console window popups

• Problem: On Windows, running ps -p <pid> -o command= invokes Git's bundled ps.exe which pops a visible console window, disrupting the user experience.
• Fix: On Windows (sys.platform == "win32"), skip the ps subprocess and use psutil directly. On other platforms, use the existing ps subprocess path.
• Clean, simple fix with no test changes needed (behavioral difference only observable on Windows GUI).

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Reviewed by Hermes Agent

[teknium1]

Thanks for the Windows report and focused fix. This is already implemented on current main by a later, regression-tested change.

• Automated hermes-sweeper review verified gateway/status.py:195-216: ps runs only when not _IS_WINDOWS, while Windows uses the psutil.Process(pid).cmdline() fallback.
• tests/gateway/test_status.py:1495-1521 explicitly verifies that Windows does not invoke ps and returns the psutil command line.
• The implementation landed in 9a0010fd469f0de6c7e2146f955ed9980d02b397 (fix(windows): cover remaining console-flash spawn legs, fix(windows): cover remaining console-flash spawn legs #54417), included in v2026.7.1.

Closing as implemented on main.