Fix OAuth callback route in production builds

Add SPA routing configuration to serve-handler to ensure /oauth/callback
routes are correctly handled in production builds.

Author: jerome3o-anthropic

client/bin/cli.js

@@ -9,7 +9,12 @@ const __dirname = dirname(fileURLToPath(import.meta.url));
 const distPath = join(__dirname, "../dist");
 
 const server = http.createServer((request, response) => {
-  return handler(request, response, { public: distPath });
+  return handler(request, response, { 
+    public: distPath,
+    rewrites: [
+      { source: '/**', destination: '/index.html' }
+    ]
+  });
 });
 
 const port = process.env.PORT || 5173;