Implement Monlet MVP stack and UI updates

web/playwright.config.ts

@@ -0,0 +1,33 @@
+import { defineConfig } from "@playwright/test";
+
+const WEB_PORT = process.env.WEB_SMOKE_PORT ?? "3100";
+const MOCK_PORT = process.env.MOCK_PORT ?? "8765";
+
+export default defineConfig({
+  testDir: "./tests",
+  fullyParallel: false,
+  timeout: 30_000,
+  retries: 0,
+  use: {
+    baseURL: `http://127.0.0.1:${WEB_PORT}`,
+  },
+  webServer: [
+    {
+      command: `node tests/mock-server.mjs`,
+      url: `http://127.0.0.1:${MOCK_PORT}/api/v1/health`,
+      reuseExistingServer: true,
+      timeout: 10_000,
+      env: { MOCK_PORT },
+    },
+    {
+      command: `next dev -p ${WEB_PORT}`,
+      url: `http://127.0.0.1:${WEB_PORT}`,
+      reuseExistingServer: true,
+      timeout: 60_000,
+      env: {
+        MONLET_API_BASE_URL: `http://127.0.0.1:${MOCK_PORT}`,
+        MONLET_API_TOKEN: "smoke",
+      },
+    },
+  ],
+});