chore: enable shell emulator on windows and start preview with correct port

.npmrc

@@ -1,2 +1,3 @@
 shamefully-hoist=true
 strict-peer-dependencies=false
+shell-emulator=true

package.json

@@ -7,7 +7,7 @@
   "scripts": {
     "build": "nuxi build",
     "dev": "nuxi dev --port 5314",
-    "start": "node .output/server/index.mjs",
+    "start": "PORT=5314 node .output/server/index.mjs",
     "lint": "eslint .",
     "postinstall": "nuxi prepare",
     "prepare": "esno scripts/prepare.ts",