fix: remove venv volume mount conflicting with entrypoint.sh

The volume mount at /mnt/HoardingCow_docker_data/Hermes/venv overrides the
container's built .venv with an empty or stale host directory, causing
entrypoint.sh line 62 to fail on 'source .venv/bin/activate' (set -e).

The Docker image already builds a complete venv — no need to persist it.

ai/compose.yml

@@ -63,8 +63,6 @@ services:
       - /mnt/HoardingCow_docker_data/Syncthing/telos-ro:/opt/data/telos-ro:ro
       # Syncthing-shared inbox — write tasks here, they sync to user's laptop
       - /mnt/HoardingCow_docker_data/Syncthing/telos-rw:/opt/data/telos-rw:rw
-      # Persist Python venv across container recreation (Matrix bridge deps, etc.)
-      - /mnt/HoardingCow_docker_data/Hermes/venv:/opt/hermes/.venv
     devices:
       - /dev/kfd:/dev/kfd
       - /dev/dri:/dev/dri