The restart helper and taskkill spawn calls were missing windowsHide: true,
causing visible command prompt windows to flash on screen during gateway
restart and process cleanup on Windows.
Process trees (pty sessions, tool exec) were being SIGKILL'd immediately
without any grace period for cleanup. This prevented child processes from:
- Flushing buffers and closing files cleanly
- Closing network connections
- Terminating their own child processes
- Removing temporary files
Changes:
- Send SIGTERM to process group first (Unix)
- Wait configurable grace period (default 3s)
- Then SIGKILL if process still alive
- Windows: taskkill without /F first, then with /F after grace period
- Use unref() on timeout to not block event loop exit
Fixes#18619
Co-authored-by: James <james@openclaw.ai>
MoerAI
Sebastian
Daniel Sauer
Onur