feat(ts): 实现 Polaris 可交互首页

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

ts/web/nextjs/polaris/vitest.config.ts

@@ -0,0 +1,15 @@
+import react from "@vitejs/plugin-react"
+import { defineConfig } from "vitest/config"
+
+export default defineConfig({
+  plugins: [react()],
+  resolve: {
+    tsconfigPaths: true,
+  },
+  test: {
+    environment: "jsdom",
+    setupFiles: ["./src/test/setup.ts"],
+    clearMocks: true,
+    css: true,
+  },
+})