ci: align ruff tooling and add CI workflow #1

	name: CI

	on:
	pull_request:
	branches: [main]
	push:
	branches: [main]

	# Cancel in-flight runs on the same ref when a new push lands.
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	# Conformance fixtures live in the openarmature-spec submodule.
	submodules: recursive

	- name: Install uv
	uses: astral-sh/setup-uv@v4
	with:
	enable-cache: true

	- name: Install Python
	run: uv python install 3.12

	- name: Sync deps
	run: uv sync --frozen

	- name: Lint (ruff check)
	run: uv run ruff check .

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

	- name: Type check (pyright)
	run: uv run pyright src/ tests/

	- name: Run tests (pytest)
	run: uv run pytest -q

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