feat: add .nvmrc for Node.js version management and create vercel.json for deployment configuration; remove unused Rollup dependency

Author: techagbadev-create

client/.nvmrc

@@ -0,0 +1 @@
+18

client/package.json

@@ -72,7 +72,6 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.25.0",
-    "@rollup/rollup-win32-x64-msvc": "^4.50.0",
     "@tailwindcss/container-queries": "^0.1.1",
     "@tailwindcss/typography": "^0.5.16",
     "@types/jspdf": "^1.3.3",

client/vercel.json

@@ -0,0 +1,16 @@
+{
+  "version": 2,
+  "framework": "vite",
+  "buildCommand": "npm run build",
+  "outputDirectory": "dist",
+  "installCommand": "npm install",
+  "devCommand": "npm run dev",
+  "cleanUrls": true,
+  "trailingSlash": false,
+  "rewrites": [
+    {
+      "source": "/(.*)",
+      "destination": "/index.html"
+    }
+  ]
+}