cleanup + unified worker

unified-worker/Dockerfile

@@ -0,0 +1,33 @@
+FROM python:3.11-slim
+
+LABEL maintainer="andreas@knuth.dev"
+LABEL description="Unified multi-domain email worker"
+
+# System packages
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Non-root user
+RUN useradd -m -u 1000 worker && \
+    mkdir -p /app /var/log/email-worker /etc/email-worker && \
+    chown -R worker:worker /app /var/log/email-worker /etc/email-worker
+
+# Python dependencies
+COPY requirements.txt /app/
+RUN pip install --no-cache-dir -r /app/requirements.txt
+
+# Worker code
+COPY --chown=worker:worker unified_worker.py /app/
+
+WORKDIR /app
+USER worker
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
+    CMD curl -f http://localhost:8080/health || exit 1
+
+# Unbuffered output
+ENV PYTHONUNBUFFERED=1
+
+CMD ["python", "unified_worker.py"]