fix: Windows-specific reliability gap in the new timeout cleanup path (#74703)

Co-authored-by: openclaw-clawsweeper[bot] <280122609+openclaw-clawsweeper[bot]@users.noreply.github.com>

scripts/docs-i18n/codex_command_windows.go

@@ -2,8 +2,35 @@
 
 package main
 
-import "os/exec"
+import (
+	"context"
+	"errors"
+	"os"
+	"os/exec"
+	"strconv"
+)
+
+var runWindowsTaskkill = func(pid int) error {
+	ctx, cancel := context.WithTimeout(context.Background(), docsI18nCommandWaitDelay())
+	defer cancel()
+	return exec.CommandContext(ctx, "taskkill.exe", "/T", "/F", "/PID", strconv.Itoa(pid)).Run()
+}
 
 func configureCodexPromptCommand(command *exec.Cmd) {
+	command.Cancel = func() error {
+		if command.Process == nil {
+			return os.ErrProcessDone
+		}
+		if err := runWindowsTaskkill(command.Process.Pid); err != nil {
+			killErr := command.Process.Kill()
+			if errors.Is(killErr, os.ErrProcessDone) {
+				return os.ErrProcessDone
+			}
+			if killErr != nil {
+				return errors.Join(err, killErr)
+			}
+		}
+		return nil
+	}
 	command.WaitDelay = docsI18nCommandWaitDelay()
 }

scripts/docs-i18n/codex_command_windows_test.go

@@ -0,0 +1,49 @@
+//go:build windows
+
+package main
+
+import (
+	"errors"
+	"os"
+	"os/exec"
+	"testing"
+	"time"
+)
+
+func TestConfigureCodexPromptCommandWindowsCancelsProcessTree(t *testing.T) {
+	t.Setenv(envDocsI18nCommandWaitDelay, "25ms")
+	previousRunTaskkill := runWindowsTaskkill
+	defer func() { runWindowsTaskkill = previousRunTaskkill }()
+
+	var gotPID int
+	runWindowsTaskkill = func(pid int) error {
+		gotPID = pid
+		return nil
+	}
+
+	command := exec.Command("codex")
+	configureCodexPromptCommand(command)
+	command.Process = &os.Process{Pid: 1234}
+
+	if command.WaitDelay != 25*time.Millisecond {
+		t.Fatalf("expected WaitDelay override, got %s", command.WaitDelay)
+	}
+	if command.Cancel == nil {
+		t.Fatal("expected Cancel to be configured")
+	}
+	if err := command.Cancel(); err != nil {
+		t.Fatalf("Cancel returned error: %v", err)
+	}
+	if gotPID != 1234 {
+		t.Fatalf("expected taskkill for pid 1234, got %d", gotPID)
+	}
+}
+
+func TestConfigureCodexPromptCommandWindowsCancelBeforeStart(t *testing.T) {
+	command := exec.Command("codex")
+	configureCodexPromptCommand(command)
+
+	if err := command.Cancel(); !errors.Is(err, os.ErrProcessDone) {
+		t.Fatalf("expected os.ErrProcessDone, got %v", err)
+	}
+}