name: CI

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

jobs:
  ci:
    name: Typecheck & Lint (Node ${{ matrix.node-version }})
    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [20, 22]

    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Type check
        run: npm run typecheck

      - name: Lint
        run: npm run lint

      - name: Format check
        run: npm run format:check

# Note: The test suite is intentionally excluded from CI.
# Tests spawn real tmux sessions and require a full system environment.
# Run tests locally with: npx vitest run test/<file>.test.ts