chore: окружение по умолчанию в ~/.py_envs/robotex, VENV переопределяется

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -155,9 +155,7 @@ Not done yet:
 ## Local development
 
 ```bash
-python -m venv .venv
-source .venv/bin/activate
-make sync-offline
+make sync-offline        # venv in ~/.py_envs/robotex; another path: make VENV=... <target>
 docker compose up -d rabbitmq redis                       # queue and storage
 cd src && RABBITMQ_URL=... REDIS_URL=... uvicorn main:app --reload
 cd src && dramatiq worker.actors --processes 1 --threads 4