Dockerfile (Python 3.12 slim) + docker-compose (backend + nginx).
Backend on port 8000 inside container, nginx proxies API and serves
frontend static. SQLite persisted in named volume. Nginx listens on
127.0.0.1:8080 — external SSL handled by host reverse proxy.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
