chore(devops): project skeleton — uv, docker compose, Makefile, CI

One Postgres with isolated identity/clinical databases and roles (ADR-003),
FastAPI /health, Streamlit placeholder, typed settings with offline defaults.

Refs #1

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Makefile

@@ -0,0 +1,32 @@
+.PHONY: install up down logs seed demo-reset lint fmt test
+
+install:
+	uv sync
+
+up:
+	@test -f .env || cp .env.example .env
+	docker compose up -d --build
+	@echo "API: http://localhost:8000/docs  Dashboard: http://localhost:8501"
+
+down:
+	docker compose down
+
+logs:
+	docker compose logs -f app dashboard
+
+seed:
+	docker compose exec app python -m scripts.seed_demo
+
+demo-reset:
+	docker compose exec app python -m scripts.seed_demo --reset
+
+lint:
+	uv run ruff check .
+	uv run ruff format --check .
+
+fmt:
+	uv run ruff check --fix .
+	uv run ruff format .
+
+test:
+	uv run pytest -q