Add repo Playwright smoke setup

playwright.config.js

@@ -0,0 +1,13 @@
+const { defineConfig } = require("@playwright/test");
+
+module.exports = defineConfig({
+  testDir: "./tests/e2e",
+  timeout: 30_000,
+  fullyParallel: false,
+  reporter: "line",
+  use: {
+    baseURL: process.env.PLAYWRIGHT_BASE_URL || "http://127.0.0.1:5000",
+    headless: true,
+    trace: "retain-on-failure"
+  }
+});