feat: add Hermes WebUI provisioning and English Dragon HD Omni voices

control.Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3.12-slim-bookworm
 WORKDIR /app
-RUN pip install --no-cache-dir fastapi==0.142.2 httpx==0.28.1 uvicorn==0.54.0
+RUN pip install --no-cache-dir fastapi==0.142.2 httpx==0.28.1 uvicorn==0.54.0 PyYAML==6.0.3
 COPY control /app/control
 ENV PYTHONUNBUFFERED=1
 # Dedicated trusted management process: never share this socket with speech/Hermes.