fix(processes): fix multiple clawx processes running concurently (#589)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Haze <hazeone@users.noreply.github.com>
Co-authored-by: paisley <8197966+su8su@users.noreply.github.com>
Co-authored-by: Felix <24791380+vcfgv@users.noreply.github.com>

tests/unit/agents-routes.test.ts

@@ -0,0 +1,78 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+const originalPlatform = process.platform;
+
+const { mockExec } = vi.hoisted(() => ({
+  mockExec: vi.fn(),
+}));
+
+vi.mock('child_process', () => ({
+  exec: mockExec,
+  default: {
+    exec: mockExec,
+  },
+}));
+
+vi.mock('@electron/utils/agent-config', () => ({
+  assignChannelToAgent: vi.fn(),
+  clearChannelBinding: vi.fn(),
+  createAgent: vi.fn(),
+  deleteAgentConfig: vi.fn(),
+  listAgentsSnapshot: vi.fn(),
+  removeAgentWorkspaceDirectory: vi.fn(),
+  resolveAccountIdForAgent: vi.fn(),
+  updateAgentName: vi.fn(),
+}));
+
+vi.mock('@electron/utils/channel-config', () => ({
+  deleteChannelAccountConfig: vi.fn(),
+}));
+
+vi.mock('@electron/services/providers/provider-runtime-sync', () => ({
+  syncAllProviderAuthToRuntime: vi.fn(),
+}));
+
+vi.mock('@electron/api/route-utils', () => ({
+  parseJsonBody: vi.fn(),
+  sendJson: vi.fn(),
+}));
+
+function setPlatform(platform: string): void {
+  Object.defineProperty(process, 'platform', { value: platform, writable: true });
+}
+
+describe('restartGatewayForAgentDeletion', () => {
+  beforeEach(() => {
+    vi.resetAllMocks();
+    vi.resetModules();
+    mockExec.mockImplementation((_cmd: string, _opts: object, cb: (err: Error | null, stdout: string) => void) => {
+      cb(null, '');
+      return {} as never;
+    });
+  });
+
+  afterEach(() => {
+    Object.defineProperty(process, 'platform', { value: originalPlatform, writable: true });
+  });
+
+  it('uses taskkill tree strategy on Windows when gateway pid is known', async () => {
+    setPlatform('win32');
+    const { restartGatewayForAgentDeletion } = await import('@electron/api/routes/agents');
+
+    const restart = vi.fn().mockResolvedValue(undefined);
+    const getStatus = vi.fn(() => ({ pid: 4321, port: 18789 }));
+
+    await restartGatewayForAgentDeletion({
+      gatewayManager: {
+        getStatus,
+        restart,
+      },
+    } as never);
+
+    expect(mockExec).toHaveBeenCalledWith(
+      'taskkill /F /PID 4321 /T',
+      expect.any(Function),
+    );
+    expect(restart).toHaveBeenCalledTimes(1);
+  });
+});