Migrate to Vite for proper production builds with code splitting and optimization

Co-Authored-By: Claude Sonnet 4.5 (1M context) <noreply@anthropic.com>

server.ts

@@ -40,14 +40,14 @@ Bun.serve({
       })
     }
 
-    // Serve static files from public directory
-    const staticFile = Bun.file(`./public${url.pathname}`)
+    // Serve static files from dist directory (Vite build output)
+    const staticFile = Bun.file(`./dist${url.pathname}`)
     if (await staticFile.exists()) {
       return new Response(staticFile)
     }
 
     // For all other routes (SPA routing), serve index.html
-    const indexFile = Bun.file('./public/index.html')
+    const indexFile = Bun.file('./dist/index.html')
     return new Response(indexFile, {
       headers: {
         'Content-Type': 'text/html',