Add initial project files

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

backend/Dockerfile

@@ -0,0 +1,10 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app/ ./app/
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]