[30388f42] Infrastructure Hardening: Repaired CE/Connector DB schema, fixed frontend styling build, implemented robust echo shield in worker v2.1.1, and integrated Lead Engine into gateway.

lead-engine/Dockerfile

@@ -1,10 +1,31 @@
-FROM python:3.9-slim
-
+# --- STAGE 1: Builder ---
+FROM python:3.11-slim AS builder
 WORKDIR /app
 
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install python dependencies
+COPY requirements.txt .
+RUN pip install --user --no-cache-dir -r requirements.txt
+
+# --- STAGE 2: Runtime ---
+FROM python:3.11-slim
+WORKDIR /app
+
+# Copy installed packages
+COPY --from=builder /root/.local /root/.local
+ENV PATH=/root/.local/bin:$PATH
+
+# Copy app code
 COPY . .
 
-RUN pip install streamlit pandas
-
 ENV PYTHONUNBUFFERED=1
-CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]
+EXPOSE 8501
+EXPOSE 8004
+
+# Start monitor in background and streamlit in foreground
+CMD ["sh", "-c", "python monitor.py & streamlit run app.py --server.port=8501 --server.address=0.0.0.0 --server.baseUrlPath=/lead"]
+