CoreClient (httpx sync, 2 retries) cubre todos los endpoints del core y mapea 404/409/422 a {"error": ...}. app.py monta la página raíz con sidebar de branding y un health-check del core. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>