docs: update README with database setup instructions #1

	name: CI

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	check:
	runs-on: ubuntu-latest
	services:
	postgres:
	image: postgres:17-alpine
	env:
	POSTGRES_USER: papyrus
	POSTGRES_PASSWORD: papyrus
	POSTGRES_DB: papyrus_test
	ports:
	- 5432:5432
	options: >-
	--health-cmd pg_isready
	--health-interval 5s
	--health-timeout 5s
	--health-retries 5
	steps:
	- uses: actions/checkout@v4

	- uses: astral-sh/setup-uv@v5
	with:
	version: latest

	- name: Install dependencies
	run: uv sync --extra dev

	- name: Lint
	run: uv run ruff check .

	- name: Format
	run: uv run ruff format --check .

	- name: Type check
	run: uv run mypy papyrus/

	- name: Test
	run: uv run pytest --cov=papyrus --cov-report=term-missing
	env:
	TEST_DATABASE_URL: postgresql+asyncpg://papyrus:papyrus@localhost:5432/papyrus_test

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