fix: improve shutdown and project continuity

src/main/shutdown.test.ts

@@ -0,0 +1,26 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { waitForCleanup } from './shutdown'
+
+afterEach(() => {
+  vi.useRealTimers()
+})
+
+describe('waitForCleanup', () => {
+  it('reports completed and failed cleanup as settled', async () => {
+    await expect(
+      waitForCleanup(Promise.resolve(), 100)
+    ).resolves.toBe(true)
+    await expect(
+      waitForCleanup(Promise.reject(new Error('cleanup failed')), 100)
+    ).resolves.toBe(true)
+  })
+
+  it('stops waiting after the shutdown deadline', async () => {
+    vi.useFakeTimers()
+    const result = waitForCleanup(new Promise(() => {}), 100)
+
+    await vi.advanceTimersByTimeAsync(100)
+
+    await expect(result).resolves.toBe(false)
+  })
+})