feat: add Docker support and database migrations

- Created Dockerfile for building and running the application with Uvicorn.
- Added docker-compose.yml to manage application and PostgreSQL service.
- Introduced Alembic migrations with initial schema for CRM domain objects.
- Configured async SQLAlchemy engine for migrations.
- Updated dependencies in uv.lock to include asyncpg, passlib, and pyjwt.

app/Dockerfile

@@ -0,0 +1,24 @@
+# syntax=docker/dockerfile:1.7
+
+FROM ghcr.io/astral-sh/uv:python3.14-alpine AS builder
+WORKDIR /opt/app
+
+COPY pyproject.toml uv.lock ./
+RUN apk add --no-cache build-base libffi-dev \
+	&& uv sync --frozen --no-dev
+
+# Only application source is copied into the image layer.
+COPY app ./app
+
+FROM python:3.14-alpine AS runtime
+ENV PYTHONUNBUFFERED=1
+ENV PATH="/opt/app/.venv/bin:${PATH}"
+WORKDIR /opt/app
+
+RUN apk add --no-cache libstdc++
+
+COPY --from=builder /opt/app/.venv /opt/app/.venv
+COPY app ./app
+
+EXPOSE 8000
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]