Initial Claude implementation

Dockerfile

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+# syntax=docker/dockerfile:1
+FROM python:3.12-slim
+
+# Install uv (fast Python package manager).
+COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    UV_COMPILE_BYTECODE=1 \
+    UV_LINK_MODE=copy
+
+WORKDIR /app
+
+# Install dependencies first for better layer caching.
+COPY pyproject.toml ./
+COPY uv.lock* ./
+RUN uv sync --no-dev
+
+# Copy the application.
+COPY . .
+
+EXPOSE 8000
+
+# Default: run the API server. docker-compose overrides this to also seed.
+CMD ["uv", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]