diff --git a/tests/cases/32-contacts.test.ts b/tests/cases/32-contacts.test.ts
index fd87921..6f8617b 100644
--- a/tests/cases/32-contacts.test.ts
+++ b/tests/cases/32-contacts.test.ts
@@ -272,6 +272,15 @@ describe('32-contacts — Contacts Vue 组件化', () => {
       expect(win.body.querySelector('.note-title')?.textContent).toBe('自定义')
     })
 
+    // ⚠️ 关键回归测试：mount 后 store 必须可读取默认数据
+    // 这是 FaceTime 等跨组件读取联系人的前提
+    it('mount 后 store.get 可读取默认联系人', () => {
+      mount()
+      const data = store.get('contacts', [])
+      expect(data.length).toBeGreaterThanOrEqual(1)
+      expect(data[0].name).toBeTruthy()
+    })
+
     it('新增联系人后 store 更新', async () => {
       mount()
       const addBtn = win.body.querySelector('.fb-btn') as HTMLElement
diff --git a/tests/cases/34-facetime.test.ts b/tests/cases/34-facetime.test.ts
index 36a95d7..95dff2a 100644
--- a/tests/cases/34-facetime.test.ts
+++ b/tests/cases/34-facetime.test.ts
@@ -73,6 +73,28 @@ describe('34-facetime', () => {
   it('暴露 startCall', () => { m(); expect(typeof w.appState.startCall).toBe('function') })
   it('startCall 呼叫', async () => { m(); w.appState.startCall(C[0]); await nextTick(); expect(document.querySelector('.ft-status')?.textContent).toContain('正在呼叫') })
 
+  // --- integration: store 空时不预设数据，模拟真实首次打开 ---
+  describe('store 集成', () => {
+    it('store 有数据时显示联系人', () => { m(); expect(document.querySelector('.ft-cell')).toBeTruthy() })
+    // ⚠️ 回归：真实流程 Contacts mount→persist→FaceTime mount 可读
+    it('Contacts mount 后 FaceTime 可读取', async () => {
+      // 模拟真实流程：先 mount Contacts 写 store，再 mount FaceTime 读
+      const ContactsComponent = (await import('../../src/apps/contacts/Contacts.vue')).default
+      const cEl = document.createElement('div'); cEl.className = 'window'; document.body.appendChild(cEl)
+      const cBody = document.createElement('div'); cBody.className = 'win-body'; cEl.appendChild(cBody)
+      const cWin = { id: 'ct', appId: 'contacts', el: cEl, body: cBody, timers: [], data: {} }
+      render(h(ContactsComponent, { win: cWin }), cBody)
+      await nextTick()
+      // 验证 Contacts 已 persist
+      const contacts = store.get('contacts', [])
+      expect(contacts.length).toBeGreaterThanOrEqual(1)
+      // FaceTime 应能读取
+      render(null, w.body); m()
+      expect(document.querySelector('.ft-cell')).toBeTruthy()
+      render(null, cBody); cEl.remove()
+    })
+  })
+
   // --- unmount ---
   it('卸载', () => { m(); render(null, w.body); expect(w.body.children.length).toBe(0) })
 })