fix(qa): kill telegram credential trees on windows

scripts/e2e/telegram-user-credential-io.ts

@@ -1,5 +1,5 @@
 // Telegram User Credential Io script supports OpenClaw repository automation.
-import { spawn } from "node:child_process";
+import { spawn, spawnSync } from "node:child_process";
 import { readBoundedResponseText } from "../lib/bounded-response.ts";
 
 export type JsonObject = Record<string, unknown>;
@@ -244,8 +244,22 @@ async function finishTimedOutChildProcessTree(
   }
 }
 
-function signalChildProcessTree(child: ReturnType<typeof spawn>, signal: NodeJS.Signals) {
-  if (process.platform !== "win32" && child.pid) {
+type ChildProcessTreeTarget = Pick<ReturnType<typeof spawn>, "kill" | "pid">;
+
+export function signalChildProcessTree(
+  child: ChildProcessTreeTarget,
+  signal: NodeJS.Signals,
+  {
+    platform = process.platform,
+    runTaskkill = spawnSync,
+    useProcessGroup = platform !== "win32",
+  }: {
+    platform?: NodeJS.Platform;
+    runTaskkill?: typeof spawnSync;
+    useProcessGroup?: boolean;
+  } = {},
+) {
+  if (useProcessGroup && child.pid) {
     try {
       process.kill(-child.pid, signal);
       return;
@@ -253,6 +267,16 @@ function signalChildProcessTree(child: ReturnType<typeof spawn>, signal: NodeJS.
       // The process group can disappear between timeout and cleanup.
     }
   }
+  if (platform === "win32" && typeof child.pid === "number") {
+    const args = ["/PID", String(child.pid), "/T"];
+    if (signal === "SIGKILL") {
+      args.push("/F");
+    }
+    const result = runTaskkill("taskkill", args, { stdio: "ignore" });
+    if (!result.error && result.status === 0) {
+      return;
+    }
+  }
   child.kill(signal);
 }
 

test/scripts/telegram-user-credential.test.ts

@@ -5,7 +5,11 @@ import { readFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import path, { win32 } from "node:path";
 import { afterEach, describe, expect, it, vi } from "vitest";
-import { fetchJsonWithTimeout, runCommand } from "../../scripts/e2e/telegram-user-credential-io.ts";
+import {
+  fetchJsonWithTimeout,
+  runCommand,
+  signalChildProcessTree,
+} from "../../scripts/e2e/telegram-user-credential-io.ts";
 import {
   expandHome,
   resolvePrivateJsonDirectory,
@@ -403,6 +407,31 @@ setInterval(() => {}, 1000);
     }
   });
 
+  it("signals Windows credential helper process trees with taskkill", () => {
+    const child = {
+      kill: vi.fn(),
+      pid: 12345,
+    };
+    const runTaskkill = vi.fn(() => ({ error: undefined, status: 0 }));
+
+    signalChildProcessTree(child, "SIGTERM", {
+      platform: "win32",
+      runTaskkill,
+    });
+    expect(runTaskkill).toHaveBeenNthCalledWith(1, "taskkill", ["/PID", "12345", "/T"], {
+      stdio: "ignore",
+    });
+
+    signalChildProcessTree(child, "SIGKILL", {
+      platform: "win32",
+      runTaskkill,
+    });
+    expect(runTaskkill).toHaveBeenNthCalledWith(2, "taskkill", ["/PID", "12345", "/T", "/F"], {
+      stdio: "ignore",
+    });
+    expect(child.kill).not.toHaveBeenCalled();
+  });
+
   it.runIf(process.platform !== "win32")(
     "exits promptly after forwarded SIGTERM children exit cleanly",
     async () => {