feat(content): implement Content Engine MVP (v1.0) with GTM integration

content-engine/Dockerfile

@@ -0,0 +1,42 @@
+FROM node:20-slim AS frontend-build
+WORKDIR /app/frontend
+# Correct path relative to build context (root)
+COPY content-engine/frontend/package*.json ./
+RUN npm install
+COPY content-engine/frontend/ ./
+RUN npm run build
+
+FROM python:3.11-slim
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    curl \
+    gnupg \
+    && curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
+    && apt-get install -y nodejs \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY content-engine/requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Install Backend Node dependencies
+COPY content-engine/package.json ./
+RUN npm install
+
+# Copy backend files
+COPY content-engine/*.py ./
+COPY content-engine/server.cjs ./
+# Helpers and Config from root
+COPY helpers.py ./
+COPY config.py ./
+
+# Copy built frontend
+COPY --from=frontend-build /app/frontend/dist ./dist
+
+# Keys and persistence placeholders
+RUN touch gemini_api_key.txt serpapikey.txt
+
+EXPOSE 3006
+CMD ["node", "server.cjs"]