fix: add Matrix bridge deps to compose entrypoint with persistent venv

Adds uv pip install openai mautrix[encryption] to the hermes container
entrypoint, with volume mount at /opt/hermes/.venv for persistence.

Key changes:
- Entrypoint now activates venv and installs Matrix bridge deps before
  running the official entrypoint.sh
- Handles empty-volume first-boot by recreating the venv from scratch
  (matching Dockerfile install steps)
- Persists venv at /mnt/HoardingCow_docker_data/Hermes/venv so pip
  packages survive container recreation

ai/compose.yml

@@ -31,8 +31,20 @@ services:
       ssh:
         - default
     container_name: hermes
+    # Install Matrix bridge deps (mautrix[encryption]) + openai into the venv at startup.
+    # Ensures the venv is usable even on first boot with empty persistent volume.
     entrypoint: ["/bin/bash", "-c",
-      "bash /opt/data/hermes-tools/install.sh && exec /usr/bin/tini -g -- /opt/hermes/docker/entrypoint.sh \"$@\"",
+      "bash /opt/data/hermes-tools/install.sh && \
+       if [ ! -f /opt/hermes/.venv/bin/python3 ]; then \
+         uv venv /opt/hermes/.venv --seed && \
+         . /opt/hermes/.venv/bin/activate && \
+         uv pip install --no-cache-dir --no-deps -e /opt/hermes && \
+         uv pip install --no-cache-dir piper-tts sounddevice numpy; \
+       else \
+         . /opt/hermes/.venv/bin/activate; \
+       fi && \
+       uv pip install openai 'mautrix[encryption]' -q && \
+       exec /usr/bin/tini -g -- /opt/hermes/docker/entrypoint.sh \"$@\"",
       "hermes-entrypoint"]
     restart: always
     # Gateway run enables the internal API server on port 8642
@@ -59,6 +71,8 @@ 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