feat: Preparar app para deploy na Vercel (mantendo Netlify)

vercel.json

@@ -1,4 +1,7 @@
 {
+  "buildCommand": "npm run build",
+  "outputDirectory": "dist",
+  "framework": "vite",
   "rewrites": [
     {
       "source": "/(.*)",
@@ -16,13 +19,30 @@
       ]
     },
     {
-      "source": "/(.*\\\\.(js|css|png|jpg|jpeg|gif|ico|svg))$",
+      "source": "/(.*\\.(js|css|png|jpg|jpeg|gif|ico|svg))$",
       "headers": [
         {
           "key": "Cache-Control",
           "value": "public, max-age=31536000, immutable"
         }
       ]
+    },
+    {
+      "source": "/(.*)",
+      "headers": [
+        {
+          "key": "X-Content-Type-Options",
+          "value": "nosniff"
+        },
+        {
+          "key": "X-Frame-Options",
+          "value": "DENY"
+        },
+        {
+          "key": "X-XSS-Protection",
+          "value": "1; mode=block"
+        }
+      ]
     }
   ]
 }