fix: close_browser kills orphaned CDP processes after agent restart

When the agent restarts, _browser_process is lost but the CDP Edge
instance keeps running. Now close_browser also searches for processes
with 'easybot_cdp_profile' in their command line.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

easybot_windows_agent/main.py

@@ -623,11 +623,29 @@ async def tool_open_browser(args: dict[str, Any]) -> dict[str, Any]:
 async def tool_close_browser(args: dict[str, Any]) -> dict[str, Any]:
     """Close the CDP browser."""
     global _browser_process
+    killed = False
+    # Try tracked process first
     if _browser_process and _browser_process.poll() is None:
         _browser_process.terminate()
         _browser_process = None
-        return {"success": True}
-    return {"success": True, "message": "No browser was running"}
+        killed = True
+    # Also kill any orphaned CDP browser by profile dir (survives agent restarts)
+    import tempfile
+    cdp_profile = os.path.join(tempfile.gettempdir(), "easybot_cdp_profile")
+    try:
+        import subprocess as _sp
+        result = _sp.run(
+            ["powershell", "-Command",
+             f"Get-Process msedge,chrome -ErrorAction SilentlyContinue | "
+             f"Where-Object {{$_.CommandLine -like '*easybot_cdp_profile*'}} | "
+             f"Stop-Process -Force"],
+            capture_output=True, timeout=5,
+        )
+        if result.returncode == 0:
+            killed = True
+    except Exception:
+        pass
+    return {"success": True} if killed else {"success": True, "message": "No browser was running"}
 
 
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