fix: 修复 TypeScript 测试配置类型错误

修复内容:
- 修复 IntersectionObserver mock 缺少必需属性的类型错误
- 修复 localStorage mock 缺少 length 和 key 属性的类型错误
- 添加正确的类型断言确保测试环境兼容性

 构建准备:
- 解决构建过程中的 TypeScript 编译错误
- 确保生产构建能够正常完成
- 为 release 0.1.1 做好准备

apps/desktop/src/test/setup.ts

@@ -13,11 +13,16 @@ Object.defineProperty(window, '__TAURI__', {
 
 // Mock IntersectionObserver
 global.IntersectionObserver = class IntersectionObserver {
+  root = null;
+  rootMargin = '';
+  thresholds = [];
+
   constructor() {}
   disconnect() {}
   observe() {}
   unobserve() {}
-};
+  takeRecords() { return []; }
+} as any;
 
 // Mock ResizeObserver
 global.ResizeObserver = class ResizeObserver {
@@ -44,9 +49,11 @@ Object.defineProperty(window, 'matchMedia', {
 
 // Mock localStorage
 const localStorageMock = {
+  length: 0,
   getItem: vi.fn(),
   setItem: vi.fn(),
   removeItem: vi.fn(),
   clear: vi.fn(),
-};
+  key: vi.fn(),
+} as Storage;
 global.localStorage = localStorageMock;