Summary

On Windows Git Bash / MSYS, hermes gateway run can crash during duplicate-instance detection when a stale gateway.pid exists and os.kill(pid, 0) raises a plain OSError / WinError 11 instead of ProcessLookupError.

Repro

1. On Windows, leave a stale ~/.hermes/gateway.pid behind (for example after an interrupted run).
2. Start Hermes from Git Bash / MSYS with hermes gateway run.
3. The startup path calls gateway.status.get_running_pid().

Observed

Startup aborts before the gateway can finish booting. In the reproduced case the traceback ended at gateway/status.py inside get_running_pid() with:

OSError: [WinError 11] 试图加载格式不正确的程序。

The current code only treats ProcessLookupError and PermissionError as stale/non-running. On this Windows path, a generic OSError also needs to be treated as a stale PID check failure.

Expected

If the PID liveness check fails with this Windows-specific OSError, Hermes should remove the stale pid file and continue startup normally.

Notes

This appears related to existing Windows stale-PID gateway reports, but this repro specifically came from Git Bash / MSYS with WinError 11 during os.kill(pid, 0) in gateway/status.py.