Fix prod build

Fixes "Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "text/html". Strict MIME type" issue when reloading on nested routes.

package.json

@@ -5,7 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "vite",
-    "build": "tsc && vite build",
+    "build": "tsc && vite build --base=/",
     "preview": "vite preview",
     "test": "vitest",
     "prepare": "husky",