feat: 初始化 SvelteKit 项目基础结构和示例组件

- 添加项目配置文件（.npmrc, pnpm-workspace.yaml, prettier 配置等）
- 设置基础路由和布局组件
- 实现示例组件展示 Svelte 5 新特性（$state, $derived 等）
- 配置测试环境（单元测试和 E2E 测试）
- 添加静态资源和 favicon

svelte.config.js

@@ -0,0 +1,18 @@
+import adapter from '@sveltejs/adapter-auto';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	// Consult https://svelte.dev/docs/kit/integrations
+	// for more information about preprocessors
+	preprocess: vitePreprocess(),
+
+	kit: {
+		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
+		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
+		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
+		adapter: adapter()
+	}
+};
+
+export default config;