From 011b2cf4d06d77cdfdf06ae3052c84aff48e52c6 Mon Sep 17 00:00:00 2001
From: kshitijk4poor <82637225+kshitijk4poor@users.noreply.github.com>
Date: Tue, 25 Aug 2026 03:30:11 +0530
Subject: [PATCH] =?UTF-8?q?fix(browser):=20psutil.pid=5Fexists=20liveness?=
 =?UTF-8?q?=20probe=20=E2=80=94=20Windows=20footgun=20(#85125=20CI)?=
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---
 tools/browser_tool.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/browser_tool.py b/tools/browser_tool.py
index 351ba1dc20..d64893d988 100644
--- a/tools/browser_tool.py
+++ b/tools/browser_tool.py
@@ -3392,6 +3392,8 @@ def _pid_exists(pid: int) -> bool:
             return psutil.pid_exists(pid)
         except Exception:
             return False
+    # windows-footgun: ok — psutil.pid_exists above handles Windows; this
+    # os.kill(pid, 0) probe only runs when psutil is unavailable.
     try:
         os.kill(pid, 0)
     except ProcessLookupError: