Explicitly set API docs and schema URLs.

- Set OpenAPI schema URL to `/openapi.json`
- Set docs URL to `/docs`
- Set redoc URL to `/redoc`
- Update Vite config for API docs routing
- Ensure proper path handling for docs endpoints

lightrag_webui/vite.config.ts

@@ -26,7 +26,9 @@ export default defineConfig({
             target: import.meta.env.VITE_BACKEND_URL || 'http://localhost:9621',
             changeOrigin: true,
             rewrite: endpoint === '/api' ?
-              (path) => path.replace(/^\/api/, '') : undefined
+              (path) => path.replace(/^\/api/, '') :
+              endpoint === '/docs' || endpoint === '/openapi.json' ?
+                (path) => path : undefined
           }
         ])
       ) : {}