Refactor code structure for improved readability and maintainability

Dockerfile

@@ -0,0 +1,18 @@
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN pip install --no-cache-dir uv
+
+COPY pyproject.toml ./
+RUN uv sync --no-dev
+
+COPY app ./app
+COPY prisma ./prisma
+
+EXPOSE 8000
+
+CMD ["uv", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]