Harden public documentation set #50

	name: CI

	on:
	push:
	branches: [main]
	paths-ignore:
	- "**.md"
	- "site/**"
	- "apps/docs/**"
	- "skills/**"
	- "deploy/**"
	- "extensions/**"
	- "sdks/**"
	- "desktop/**"
	- ".gitignore"
	- "LICENSE"
	pull_request:
	branches: [main]
	paths-ignore:
	- "**.md"
	- "site/**"
	- "apps/docs/**"
	- "skills/**"
	- "deploy/**"
	- "extensions/**"
	- "sdks/**"
	- "desktop/**"

	# Cancel any in-progress CI run for the same branch when a new push lands.
	# Saves Actions minutes on rapid-fire commits.
	concurrency:
	group: ci-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	test:
	name: test (Elixir ${{ matrix.elixir }} / OTP ${{ matrix.otp }})
	runs-on: ubuntu-latest
	timeout-minutes: 15

	strategy:
	fail-fast: true
	matrix:
	include:
	# Single supported version pair — matches the project's documented
	# requirement (`mix.exs` → elixir: "~> 1.17"). Halves minute usage
	# vs the previous 2-version matrix. Add OTP 27 here later once the
	# project officially supports it.
	- otp: "26.2"
	elixir: "1.17.3"

	steps:
	- uses: actions/checkout@v4

	- name: Set up Erlang/OTP and Elixir
	uses: erlef/setup-beam@v1
	with:
	otp-version: ${{ matrix.otp }}
	elixir-version: ${{ matrix.elixir }}

	- name: Cache deps and _build
	uses: actions/cache@v4
	with:
	path: \|
	deps
	_build
	key: ${{ runner.os }}-mix-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('mix.lock') }}
	restore-keys: \|
	${{ runner.os }}-mix-${{ matrix.otp }}-${{ matrix.elixir }}-

	- name: Install deps
	run: mix deps.get

	- name: Compile
	run: mix compile

	- name: Check formatting
	run: mix format --check-formatted

	- name: Run tests
	run: mix test
	env:
	MIX_ENV: test

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