added SPA 404 to build

package.json

@@ -5,7 +5,7 @@
 	"scripts": {
 		"dev": "vite",
 		"prebuild": "node scripts/prebuild.mjs",
-		"build": "node scripts/prebuild.mjs && vite build",
+		"build": "node scripts/prebuild.mjs && vite build && cp 404.html dist/404.html",
 		"preview": "vite preview"
 	},
 	"dependencies": {

src/index.tsx

@@ -27,13 +27,13 @@ export function App() {
   return (
     <MantineProvider withGlobalStyles withNormalizeCSS theme={theme}>
       <Box mb="xl">
-        <SubfolderRouter>
+        <Router>
           <Home path="/" />
           <Posts path="/posts" />
           <Post path="/posts/:title" />
           <Stream path="/stream" />
           <NotFound default />
-        </SubfolderRouter>
+        </Router>
       </Box>
     </MantineProvider>
   )