fix: harden gateway process shutdown lifecycle

Co-authored-by: Haze <hazeone@users.noreply.github.com>

tests/unit/main-quit-lifecycle.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from 'vitest';
+import {
+  createQuitLifecycleState,
+  markQuitCleanupCompleted,
+  requestQuitLifecycleAction,
+} from '@electron/main/quit-lifecycle';
+
+describe('main quit lifecycle coordination', () => {
+  it('starts cleanup only once', () => {
+    const state = createQuitLifecycleState();
+
+    expect(requestQuitLifecycleAction(state)).toBe('start-cleanup');
+    expect(requestQuitLifecycleAction(state)).toBe('cleanup-in-progress');
+  });
+
+  it('allows quit after cleanup is marked complete', () => {
+    const state = createQuitLifecycleState();
+
+    expect(requestQuitLifecycleAction(state)).toBe('start-cleanup');
+    markQuitCleanupCompleted(state);
+    expect(requestQuitLifecycleAction(state)).toBe('allow-quit');
+  });
+});