chore(frontend): add Vercel rewrites and deploy config

Author: kr1shnasomani

frontend/.env.production

@@ -0,0 +1,2 @@
+# If you prefer absolute calls instead of rewrites, set this
+# VITE_API_BASE=https://sportiq-j4hv.onrender.com

frontend/.vercelignore

@@ -0,0 +1,8 @@
+# Ignore everything by default, let Vercel use the build output
+# Node modules are not needed at deploy time for static builds
+node_modules
+*.log
+.vscode
+.git
+.gitignore
+.DS_Store

frontend/vercel.json

@@ -0,0 +1,12 @@
+{
+  "rewrites": [
+    {
+      "source": "/api/(.*)",
+      "destination": "https://sportiq-j4hv.onrender.com/api/$1"
+    },
+    {
+      "source": "/health",
+      "destination": "https://sportiq-j4hv.onrender.com/health"
+    }
+  ]
+}