feat: add git-consistent memory gateway architecture

gateway/Dockerfile

@@ -0,0 +1,38 @@
+FROM node:22-bookworm-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    QMD_VERSION=1.0.7 \
+    PATH=/opt/venv/bin:$PATH \
+    XDG_CACHE_HOME=/var/lib/qmd/cache \
+    XDG_CONFIG_HOME=/var/lib/qmd/config
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+      ca-certificates \
+      curl \
+      git \
+      cmake \
+      python3 \
+      python3-pip \
+      python3-venv \
+      make \
+      g++ \
+      tini \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN npm install -g "@tobilu/qmd@${QMD_VERSION}" \
+    && npm cache clean --force
+
+WORKDIR /app
+
+COPY gateway/requirements.txt /app/requirements.txt
+RUN python3 -m venv /opt/venv \
+    && pip install --no-cache-dir -r /app/requirements.txt
+
+COPY gateway/app /app/app
+
+EXPOSE 8787
+
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["python3", "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8787"]