fix(gateway): PID detection fails on Windows — two issues (#25421)#25488
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- _read_process_cmdline: /proc and 'ps' are unavailable on Windows, so process cmdline was always empty. Add psutil fallback (already a hard dependency used by _pid_exists in the same module). - _record_looks_like_gateway: argv paths use backslashes on Windows but patterns use forward slashes/dots, so the fallback record check always failed. Normalize backslashes to forward slashes before matching. Together these caused get_running_pid() to return None on Windows even when the gateway process is alive, making the dashboard report gateway as 'stopped' despite it functioning normally.
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Two Windows-specific bugs in gateway PID detection:
_read_process_cmdlinehad no psutil fallback path for Windows(only
/procand POSIXps) — always returned empty on Win._record_looks_like_gatewaydidn't normalize backslashes in pathmatching, so Windows-style
C:\Users\…\hermes_cli\main.pypathsnever matched.
Both fixes are minimal and Windows-gated.
Salvage of #25421 by @Tianyu199509.