test: add optimizer mvp samples and smoke test

playwright.config.ts

@@ -0,0 +1,21 @@
+import { defineConfig, devices } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./tests/e2e",
+  webServer: {
+    command: "npm run dev",
+    url: "http://localhost:3000",
+    reuseExistingServer: true,
+    timeout: 120_000,
+  },
+  use: {
+    baseURL: "http://localhost:3000",
+    trace: "on-first-retry",
+  },
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+  ],
+});