Reordered to put a real browsable site first (React frontend served
by FastAPI, Tasks 1-2) ahead of backend-only plumbing (Ollama queue,
Piper TTS, WebSocket session channel, Tasks 3-5) that Plans 3-6 will
build spirit-mode logic on top of.
Task 1 now scaffolds a Python venv and a systemd unit template
instead of a Dockerfile/Compose stack. Task 3 installs Postgres
directly via apt and creates dev/test databases on the same
instance. All test-run commands switched from `docker compose run`
to plain `pytest` with exported env vars.
