Deploy application code to production

- Build frontend application (dist/ ready)
- Build Function App API (TypeScript compiled)
- Fix staticwebapp.config.json (node:20 instead of node:22)
- Add deployment documentation and instructions

Ready for automatic deployment via GitHub Actions

staticwebapp.config.json

@@ -84,9 +84,9 @@
     ".ttf": "font/ttf",
     ".eot": "application/vnd.ms-fontobject"
   },
-  "platform": {
-    "apiRuntime": "node:22"
-  },
+      "platform": {
+        "apiRuntime": "node:20"
+      },
   "forwardingGateway": {
     "allowedForwardedHosts": [
       "mim4u.org",