chore: add docker configuration for containerized deployment

.dockerignore

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+build/
+data/
+results/
+.stamps/
+.venv/
+__pycache__/
+*.pyc
+*.egg-info/
+.git/
+.DS_Store
+screenshot.png

Dockerfile

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+FROM python:3.11-slim
+
+# ── System deps (cmake, g++, just) ────────────────────────────────────────────
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        cmake \
+        g++ \
+        make \
+        curl \
+    && curl -fsSL https://just.systems/install.sh | bash -s -- --to /usr/local/bin \
+    && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# ── Python deps ───────────────────────────────────────────────────────────────
+WORKDIR /app
+COPY pyproject.toml ./
+RUN pip install --no-cache-dir \
+        streamlit \
+        plotly \
+        yfinance \
+        pandas \
+        numpy
+
+# ── Copy source ───────────────────────────────────────────────────────────────
+COPY core/       ./core/
+COPY strategies/ ./strategies/
+COPY scripts/    ./scripts/
+COPY app.py      ./
+COPY CMakeLists.txt ./
+COPY Justfile    ./
+
+# ── Build C++ core ────────────────────────────────────────────────────────────
+RUN cmake -B build -DCMAKE_BUILD_TYPE=Release \
+    && cmake --build build -j$(nproc)
+
+# ── Runtime dirs ─────────────────────────────────────────────────────────────
+RUN mkdir -p data results
+
+EXPOSE 8501
+
+# ── Entrypoint ────────────────────────────────────────────────────────────────
+CMD ["streamlit", "run", "app.py", \
+     "--server.address=0.0.0.0", \
+     "--server.port=8501", \
+     "--server.headless=true"]

docker-compose.yml

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+services:
+  backtest:
+    build: .
+    ports:
+      - "8501:8501"
+    volumes:
+      - ./data:/app/data
+      - ./results:/app/results
+    environment:
+      - STREAMLIT_SERVER_HEADLESS=true
+      - STREAMLIT_SERVER_ADDRESS=0.0.0.0
+      - STREAMLIT_SERVER_PORT=8501
+    restart: unless-stopped