refactor: extend vitest setup with full chrome/browser mocks and i18n utility mock

vitest.setup.ts

@@ -1,18 +1,29 @@
 import '@testing-library/jest-dom';
-import { vi, beforeEach, afterEach } from 'vitest';
+import { afterEach, beforeEach, vi } from 'vitest';
+
+vi.mock('@/utils/useLazyTranslation', () => ({
+  useLazyTranslation: (ns?: string) => ({
+    // 自动承接命名空间前缀过滤，100% 模拟真实多语种直出
+    t: (key: string) => (ns ? `${ns}:${key}` : key),
+    i18n: {
+      changeLanguage: vi.fn().mockResolvedValue(undefined),
+      language: 'zh-CN',
+    },
+    isLoaded: true,
+  }),
+}));
 
-// Mock react-i18next
 vi.mock('react-i18next', () => ({
   useTranslation: () => ({
     t: (key: string) => key,
     i18n: {
-      changeLanguage: vi.fn(),
+      changeLanguage: vi.fn().mockResolvedValue(undefined),
       language: 'zh-CN',
     },
   }),
   initReactI18next: {
     type: '3rdParty',
-    init: vi.fn(),
+    init: vi.fn().mockResolvedValue(undefined),
   },
 }));
 
@@ -36,14 +47,14 @@ const storageMock = {
   },
 };
 
-Object.defineProperty(global, 'chrome', {
-  value: {
+const webExtensionMock = {
   storage: storageMock,
   tabs: {
     query: vi.fn().mockResolvedValue([]),
-      get: vi.fn(),
+    get: vi.fn().mockResolvedValue({}),
     sendMessage: vi.fn().mockResolvedValue(undefined),
     create: vi.fn().mockResolvedValue({}),
+    reload: vi.fn().mockResolvedValue(undefined), // ✅ 承接 MessageAction.RELOAD_TAB 刷新单元测试
   },
   runtime: {
     id: 'test-extension-id',
@@ -59,6 +70,7 @@ Object.defineProperty(global, 'chrome', {
       addListener: vi.fn(),
       removeListener: vi.fn(),
     },
+    openPopup: vi.fn().mockResolvedValue(undefined),
   },
   sidePanel: {
     open: vi.fn().mockResolvedValue(undefined),
@@ -70,6 +82,13 @@ Object.defineProperty(global, 'chrome', {
     getAll: vi.fn().mockResolvedValue([]),
     remove: vi.fn().mockResolvedValue(undefined),
   },
+  alarms: {
+    create: vi.fn().mockResolvedValue(undefined),
+    onAlarm: {
+      addListener: vi.fn(),
+      removeListener: vi.fn(),
+    },
+  },
   contextMenus: {
     create: vi.fn(),
     onClicked: {
@@ -92,13 +111,18 @@ Object.defineProperty(global, 'chrome', {
       ACTION: 'action',
     },
   },
-  },
-  writable: true,
-});
+};
+
+Object.defineProperty(globalThis, 'chrome', { value: webExtensionMock, writable: true });
+Object.defineProperty(globalThis, 'browser', { value: webExtensionMock, writable: true });
+
+if (typeof window !== 'undefined') {
+  Object.defineProperty(window, 'chrome', { value: webExtensionMock, writable: true });
+  Object.defineProperty(window, 'browser', { value: webExtensionMock, writable: true });
+}
 
 beforeEach(() => {
   vi.clearAllMocks();
-  // Ensure storage mocks return objects even after clearAllMocks
   storageMock.local.get.mockResolvedValue({});
   storageMock.session.get.mockResolvedValue({});
 });
@@ -107,8 +131,7 @@ afterEach(() => {
   vi.restoreAllMocks();
 });
 
-// 全局 matchMedia mock（ThemeModeProvider 依赖）
-// 必须在 beforeEach 中设置，因为 afterEach 的 restoreAllMocks 会清除它
+// 全局 matchMedia 极客级环境模拟（ThemeModeProvider 依赖）
 beforeEach(() => {
   Object.defineProperty(window, 'matchMedia', {
     writable: true,