pname: CI

on:
  pull_request:
    branches: ['main']

jobs:
  build:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: src
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        run: |
          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
          echo "$HOME/.cargo/bin" >> $GITHUB_PATH

      - name: Cache cargo registry
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            src/target
          # v2: bump this salt to force a clean cache when a stuck/killed job
          # may have saved a corrupted incremental-compilation `src/target`
          # (observed 2026-08-11: a stale test binary deadlocked in NUMA
          # worker startup; a from-scratch rebuild of the same source fixed
          # it instantly, pointing at cache corruption rather than a source
          # bug).
          key: ${{ runner.os }}-cargo-v2-${{ hashFiles('src/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo-v2-

      - name: Build
        run: cargo build --release

      - name: Test
        run: cargo test --release