fix(website): fix vercel.json routing for multi-page site and static assets

Author: thegreatalxx

website/vercel.json

@@ -2,17 +2,65 @@
   "version": 2,
   "builds": [
     {
-      "src": "index.html",
+      "src": "**/*",
       "use": "@vercel/static"
     }
   ],
   "routes": [
+    {
+      "src": "/css/(.*)",
+      "dest": "/css/$1"
+    },
+    {
+      "src": "/js/(.*)",
+      "dest": "/js/$1"
+    },
+    {
+      "src": "/assets/(.*)",
+      "dest": "/assets/$1"
+    },
+    {
+      "src": "/features.html",
+      "dest": "/features.html"
+    },
+    {
+      "src": "/platforms.html",
+      "dest": "/platforms.html"
+    },
+    {
+      "src": "/agents.html",
+      "dest": "/agents.html"
+    },
+    {
+      "src": "/install.html",
+      "dest": "/install.html"
+    },
     {
       "src": "/(.*)",
       "dest": "/index.html"
     }
   ],
   "headers": [
+    {
+      "source": "/css/(.*)",
+      "headers": [
+        { "key": "Content-Type", "value": "text/css; charset=utf-8" },
+        { "key": "Cache-Control", "value": "public, max-age=31536000, immutable" }
+      ]
+    },
+    {
+      "source": "/js/(.*)",
+      "headers": [
+        { "key": "Content-Type", "value": "application/javascript; charset=utf-8" },
+        { "key": "Cache-Control", "value": "public, max-age=31536000, immutable" }
+      ]
+    },
+    {
+      "source": "/assets/(.*)",
+      "headers": [
+        { "key": "Cache-Control", "value": "public, max-age=31536000, immutable" }
+      ]
+    },
     {
       "source": "/(.*)",
       "headers": [