perf：优化代码

src/index.ts

@@ -3,7 +3,7 @@ import { app } from './app.ts';
 import './route.ts';
 const config = useConfig();
 // import { app as aiApp } from '@kevisual/ai-lang/src/index.ts';
-import { uploadMiddleware } from './lib/upload.ts';
+import { uploadMiddleware } from './routes-simple/upload.ts';
 import { loadApps } from './load-apps.ts';
 // export { aiApp };
 export { app };