test(waas-engine): add vitest suite and node ssr container adapter setup

package.json

@@ -12,6 +12,7 @@
     "astro": "astro"
   },
   "dependencies": {
+    "@astrojs/node": "^8.3.4",
     "@astrojs/react": "^3.6.3",
     "@astrojs/tailwind": "^5.1.4",
     "@fontsource/inter": "^5.2.8",
@@ -19,9 +20,15 @@
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
     "astro": "^4.16.0",
+    "nodemailer": "^9.0.5",
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
     "react-icons": "^5.7.0",
     "tailwindcss": "^3.4.19"
+  },
+  "devDependencies": {
+    "@types/nodemailer": "^8.0.1",
+    "@vitest/coverage-v8": "^4.1.10",
+    "vitest": "^4.1.10"
   }
 }