feat(overlay-sync): wire OverlaySyncService into DI, IPC and renderer gating

tests/unit/application/services/OverlaySyncService.timeout.test.ts

@@ -0,0 +1,36 @@
+import { jest } from '@jest/globals'
+import { OverlayAction } from '../../../../packages/application/ports/IOverlaySyncPort'
+import { IAutomationLifecycleEmitter, LifecycleCallback } from '../../../../packages/infrastructure/adapters/IAutomationLifecycleEmitter'
+import { OverlaySyncService } from '../../../../packages/application/services/OverlaySyncService'
+
+class MockLifecycleEmitter implements IAutomationLifecycleEmitter {
+  private callbacks: Set<LifecycleCallback> = new Set()
+  onLifecycle(cb: LifecycleCallback): void {
+    this.callbacks.add(cb)
+  }
+  offLifecycle(cb: LifecycleCallback): void {
+    this.callbacks.delete(cb)
+  }
+  async emit(event: any) {
+    for (const cb of Array.from(this.callbacks)) {
+      cb(event)
+    }
+  }
+}
+
+describe('OverlaySyncService timeout (unit)', () => {
+  test('startAction with short timeout resolves as tentative when no events', async () => {
+    const emitter = new MockLifecycleEmitter()
+    const svc = new OverlaySyncService({ lifecycleEmitter: emitter as any, logger: console as any, publisher: { publish: async () => {} } as any })
+
+    const action: OverlayAction = { id: 'add-car', label: 'Adding...', timeoutMs: 50 }
+
+    const start = Date.now()
+    const ack = await svc.startAction(action)
+    const elapsed = Date.now() - start
+
+    expect(ack.status).toBe('tentative')
+    expect(ack.id).toBe('add-car')
+    expect(elapsed).toBeGreaterThanOrEqual(40)
+  })
+})