name: CI

# Runs the type checker and test suite on every PR and on pushes to main,
# so broken code is caught before it merges. Mirrors the Node version and
# install step already used by release.yml.

on:
  pull_request:
  push:
    branches: [main]

# A newer commit on the same ref supersedes an in-flight run.
concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Node
        uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: npm

      - name: Install dependencies
        run: npm ci

      - name: Typecheck
        run: npm run typecheck

      - name: Test
        run: npm test

      # Lint is informational for now — the codebase has a large backlog of
      # prettier/line-ending warnings (no errors). Surfaced but not gating,
      # so a warning backlog doesn't block merges.
      - name: Lint
        run: npm run lint
        continue-on-error: true