fix(qa-lab): resolve Windows PowerShell path

extensions/qa-lab/src/process-tree-cpu.ts

@@ -1,6 +1,7 @@
 // Qa Lab plugin module implements process tree cpu behavior.
 import { spawnSync } from "node:child_process";
 import { parseStrictFiniteNumber, parseStrictInteger } from "openclaw/plugin-sdk/number-runtime";
+import { resolveQaWindowsPowerShellExePath } from "./windows-system-tools.js";
 
 type ProcessTreeSnapshot = {
   childrenByParent: Map<number, number[]>;
@@ -175,7 +176,7 @@ function collectProcessTreeMetric(
 
 function readWindowsProcessTreeSnapshot(): ProcessTreeSnapshot | null {
   const result = spawnSync(
-    "powershell.exe",
+    resolveQaWindowsPowerShellExePath(),
     [
       "-NoProfile",
       "-ExecutionPolicy",

extensions/qa-lab/src/process-tree-cpu.windows.test.ts

@@ -0,0 +1,52 @@
+// Qa Lab tests cover Windows process tree sampling command selection.
+import path from "node:path";
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+const spawnSyncMock = vi.hoisted(() => vi.fn());
+
+vi.mock("node:child_process", async () => {
+  const actual = await vi.importActual<typeof import("node:child_process")>("node:child_process");
+  return {
+    ...actual,
+    spawnSync: spawnSyncMock,
+  };
+});
+
+import { readProcessTreeCpuMs } from "./process-tree-cpu.js";
+
+afterEach(() => {
+  vi.restoreAllMocks();
+  vi.unstubAllEnvs();
+  spawnSyncMock.mockReset();
+});
+
+describe("readProcessTreeCpuMs on Windows", () => {
+  it("uses the trusted Windows PowerShell path", () => {
+    vi.spyOn(process, "platform", "get").mockReturnValue("win32");
+    vi.stubEnv("SystemRoot", "D:\\Windows");
+    spawnSyncMock.mockReturnValue({
+      status: 0,
+      stdout: JSON.stringify([
+        {
+          ProcessId: 100,
+          ParentProcessId: 50,
+          KernelModeTime: "10000",
+          UserModeTime: "20000",
+          WorkingSetSize: "1000",
+        },
+        {
+          ProcessId: 101,
+          ParentProcessId: 100,
+          KernelModeTime: "30000",
+          UserModeTime: "40000",
+          WorkingSetSize: "2000",
+        },
+      ]),
+    });
+
+    expect(readProcessTreeCpuMs(100)).toBe(10);
+    expect(spawnSyncMock.mock.calls[0]?.[0]).toBe(
+      path.win32.join("D:\\Windows", "System32", "WindowsPowerShell", "v1.0", "powershell.exe"),
+    );
+  });
+});

extensions/qa-lab/src/windows-system-tools.test.ts

@@ -1,6 +1,7 @@
 // Qa Lab tests cover Windows system tool path resolution.
 import { describe, expect, it } from "vitest";
 import {
+  resolveQaWindowsPowerShellExePath,
   resolveQaWindowsSystem32ExePath,
   resolveQaWindowsSystemRoot,
 } from "./windows-system-tools.js";
@@ -11,6 +12,9 @@ describe("qa-lab windows system tools", () => {
     expect(resolveQaWindowsSystem32ExePath("taskkill.exe", { SystemRoot: "D:\\Windows\\" })).toBe(
       "D:\\Windows\\System32\\taskkill.exe",
     );
+    expect(resolveQaWindowsPowerShellExePath({ SystemRoot: "D:\\Windows\\" })).toBe(
+      "D:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe",
+    );
   });
 
   it("falls back to the default Windows root when env roots are unsafe", () => {

extensions/qa-lab/src/windows-system-tools.ts

@@ -60,3 +60,15 @@ export function resolveQaWindowsSystem32ExePath(
   }
   return path.win32.join(resolveQaWindowsSystemRoot(env), "System32", executableName);
 }
+
+export function resolveQaWindowsPowerShellExePath(
+  env: Record<string, string | undefined> = process.env,
+): string {
+  return path.win32.join(
+    resolveQaWindowsSystemRoot(env),
+    "System32",
+    "WindowsPowerShell",
+    "v1.0",
+    "powershell.exe",
+  );
+}