docs: updated

README.md

@@ -30,6 +30,7 @@ Client → Caddy (TLS) → FastAPI → API-key auth → semaphore acquire
   to evaluate the service and talk to clients about reliability.
 - **Proxies**: not managed by the service in v1 — the client supplies their own proxy per request if they need one.
 - **Deployment**: single Docker container behind a Caddy reverse proxy.
+- **Canvas fingerprint** по дизайну генерируется каждую сессию новый.
 
 ### Planned project layout
 
@@ -144,5 +145,3 @@ uvicorn app.main:app --reload
 ```
 
 ## TODO:
-
--[ ] хранение контекста между запросами (фиксация отпечатков браузера)